/* ==========================================================================
   VM Formation - CSS principal
   Site vitrine HTML5 / CSS3 / JavaScript Vanilla
   ========================================================================== */

:root {
  --color-night: #0f172a;
  --color-night-soft: #17223a;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: #3b82f6;
  --color-white: #ffffff;
  --color-light: #f8fafc;
  --color-border: #e2e8f0;
  --color-text: #334155;
  --color-muted: #64748b;

  --font-main: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --container-width: 1180px;
  --radius: 8px;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.12);
  --shadow-card: 0 10px 30px rgba(15, 23, 42, 0.08);
  --transition: 180ms ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  /* Evite le blanc horizontal sur mobile quand un bloc depasse legerement. */
  width: 100%;
  overflow-x: hidden;
}

body {
  /* Meme securite que sur html : la page doit rester dans la largeur de l'ecran. */
  width: 100%;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

.public-learning-callout {
  padding: 18px 0;
  color: #fff;
  background: #0f766e;
}

.public-learning-callout-layout,
.public-discovery-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, .8fr);
  align-items: center;
  gap: 28px;
}

.public-learning-callout-layout > div {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
}

.public-learning-callout-layout > div:last-child {
  justify-content: flex-end;
}

.public-learning-callout span,
.public-discovery-card > span {
  padding: 4px 9px;
  color: #064e3b;
  background: #a7f3d0;
  border-radius: 999px;
  font-size: .76rem;
  font-weight: 900;
  text-transform: uppercase;
}

.public-learning-callout a {
  padding: 8px 12px;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .65);
  border-radius: 8px;
  font-weight: 800;
}

.public-learning-callout a:hover {
  background: rgba(255, 255, 255, .12);
}

.public-discovery {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 88% 18%, rgba(37, 99, 235, .13), transparent 30%),
    linear-gradient(135deg, #f8fbff 0%, #eef5ff 52%, #f0fdfa 100%);
}

.public-discovery::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(37, 99, 235, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, .035) 1px, transparent 1px);
  background-size: 32px 32px;
  content: "";
}

.public-discovery-layout {
  position: relative;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, .72fr);
  gap: clamp(38px, 6vw, 78px);
}

.public-discovery-copy {
  min-width: 0;
}

.public-discovery-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 28px 0 0;
}

.public-discovery-list li {
  display: grid;
  gap: 3px;
  min-height: 82px;
  padding: 15px 16px 15px 46px;
  position: relative;
  background: rgba(255, 255, 255, .76);
  border: 1px solid rgba(148, 163, 184, .28);
  border-radius: 12px;
}

.public-discovery-list li::before {
  position: absolute;
  top: 17px;
  left: 16px;
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
  color: #fff;
  background: #0f766e;
  border-radius: 50%;
  content: "✓";
  font-size: .78rem;
  font-weight: 900;
}

.public-discovery-list span {
  color: var(--color-primary);
  font-size: .72rem;
  font-weight: 850;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.public-discovery-list strong {
  color: var(--color-night);
  font-size: .94rem;
  line-height: 1.35;
}

.public-discovery .hero-buttons {
  margin-top: 24px;
}

.public-discovery-card {
  display: grid;
  gap: 15px;
  padding: clamp(26px, 4vw, 38px);
  color: #dbeafe;
  background: linear-gradient(145deg, #0b1831, #163b78);
  border: 1px solid rgba(147, 197, 253, .32);
  border-radius: 20px;
  box-shadow: 0 26px 60px rgba(15, 23, 42, .2);
}

.public-discovery-card > span {
  width: fit-content;
}

.public-discovery-card strong {
  color: #fff;
  font-size: clamp(1.45rem, 2.5vw, 2rem);
  line-height: 1.15;
}

.public-discovery-card p {
  color: #cbd5e1;
}

.public-discovery-card-icon {
  display: grid;
  width: 74px;
  height: 74px;
  margin: 12px 0 4px;
  place-items: center;
  color: #fff;
  background: rgba(59, 130, 246, .28);
  border: 1px solid rgba(147, 197, 253, .38);
  border-radius: 18px;
  font-size: .92rem;
  font-weight: 900;
  letter-spacing: .08em;
}

.public-discovery-card .public-discovery-signup {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 8px;
  padding-top: 18px;
  color: #fff;
  border-top: 1px solid rgba(255, 255, 255, .18);
  font-weight: 850;
}

.public-discovery-signup span {
  font-size: 1.35rem;
}

@media (max-width: 800px) {
  .public-learning-callout-layout,
  .public-discovery-layout {
    grid-template-columns: 1fr;
  }

  .public-learning-callout-layout > div:last-child {
    justify-content: flex-start;
  }

  .public-discovery-card {
    max-width: none;
  }
}

@media (max-width: 560px) {
  .public-discovery-list {
    grid-template-columns: 1fr;
  }

  .public-discovery .hero-buttons .btn {
    width: 100%;
  }
}

main {
  flex: 1;
}

img,
svg,
video {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

:focus-visible {
  outline: 3px solid rgba(59, 130, 246, 0.45);
  outline-offset: 3px;
}

.container {
  width: min(100% - 32px, var(--container-width));
  margin-inline: auto;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px);
}

.navbar,
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 32px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-white);
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: 0;
}

.logo::before {
  content: "VM";
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  color: var(--color-white);
  background: var(--color-primary);
  border-radius: 6px;
  font-size: 0.86rem;
  font-weight: 800;
}

.menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.menu a {
  position: relative;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.95rem;
  font-weight: 600;
  transition: color var(--transition);
}

[hidden] {
  display: none !important;
}

.session-logout-form {
  margin: 0;
}

.session-logout-button {
  appearance: none;
  border: 0;
  background: transparent;
  color: rgba(255, 255, 255, 0.82);
  cursor: pointer;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0;
}

.session-logout-button:hover,
.session-logout-button:focus-visible {
  color: var(--color-white);
}

.menu a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 100%;
  height: 2px;
  background: var(--color-primary-light);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition);
}

.menu a:hover,
.menu a:focus-visible,
.menu a[aria-current="page"] {
  color: var(--color-white);
}

.menu a:hover::after,
.menu a:focus-visible::after,
.menu a[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Hero */

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  color: var(--color-white);
  background:
    radial-gradient(circle at 82% 18%, rgba(37, 99, 235, 0.36), transparent 34%),
    radial-gradient(circle at 10% 86%, rgba(59, 130, 246, 0.16), transparent 32%),
    linear-gradient(135deg, #0f172a 0%, #101a31 58%, #13203a 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 88%);
}

.hero-layout,
.hero .container {
  min-height: calc(100vh - 76px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.75fr);
  align-items: center;
  gap: 56px;
  padding: 92px 0 104px;
}

.hero-content {
  max-width: 760px;
}

.hero-kicker,
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  color: var(--color-primary-light);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-kicker {
  padding: 8px 12px;
  color: #dbeafe;
  background: rgba(37, 99, 235, 0.18);
  border: 1px solid rgba(147, 197, 253, 0.25);
  border-radius: 999px;
  letter-spacing: 0;
  text-transform: none;
}

.hero h1 {
  max-width: 860px;
  color: var(--color-white);
  font-size: clamp(2.55rem, 6vw, 4.85rem);
  line-height: 1.04;
  letter-spacing: 0;
}

.hero p {
  max-width: 760px;
  margin-top: 26px;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(1rem, 2vw, 1.15rem);
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.hero-card {
  padding: 30px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.hero-card-label {
  display: inline-flex;
  margin-bottom: 18px;
  padding: 6px 10px;
  color: #dbeafe;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
}

.hero-card h2 {
  color: var(--color-white);
  font-size: 1.45rem;
  line-height: 1.25;
}

.hero-card ul {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.hero-card li {
  position: relative;
  padding-left: 26px;
  color: rgba(255, 255, 255, 0.78);
}

.hero-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 10px;
  height: 10px;
  background: var(--color-primary-light);
  border-radius: 50%;
}

/* Accueil : clarifie l'entrée entre découverte, orientation et reprise du parcours. */
.hero-login-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  color: #bfdbfe;
  font-size: .92rem;
  font-weight: 750;
}

.hero-login-link:hover {
  color: #fff;
}

.home-free-card p {
  margin-top: 14px;
  color: rgba(255, 255, 255, .72);
  font-size: .98rem;
  line-height: 1.65;
}

.home-free-card-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 24px;
  padding-top: 20px;
  color: #fff;
  border-top: 1px solid rgba(255, 255, 255, .16);
  font-weight: 850;
}

.home-free-card-link span {
  font-size: 1.3rem;
}

.home-start {
  position: relative;
  z-index: 3;
  padding: 34px 0;
  background: #fff;
  border-bottom: 1px solid var(--color-border);
}

.home-start-heading {
  display: grid;
  gap: 8px;
  margin-bottom: 22px;
}

.home-start-heading .section-kicker {
  margin-bottom: 0;
}

.home-start-heading h2 {
  max-width: 680px;
  color: var(--color-night);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
}

.home-start-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.home-start-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 15px;
  min-height: 150px;
  padding: 22px;
  color: var(--color-night);
  background: #f8fafc;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.home-start-card:hover {
  border-color: #93c5fd;
  box-shadow: 0 16px 32px rgba(15, 23, 42, .09);
  transform: translateY(-3px);
}

.home-start-card-featured {
  color: #fff;
  background: linear-gradient(145deg, #1d4ed8, #2563eb);
  border-color: #2563eb;
}

.home-start-number {
  color: var(--color-primary);
  font-size: .75rem;
  font-weight: 900;
  letter-spacing: .08em;
}

.home-start-card-featured .home-start-number {
  color: #bfdbfe;
}

.home-start-card strong {
  display: block;
  margin-bottom: 7px;
  font-size: 1.02rem;
}

.home-start-card p {
  color: var(--color-muted);
  font-size: .9rem;
  line-height: 1.55;
}

.home-start-card-featured p {
  color: #dbeafe;
}

.home-start-arrow {
  color: var(--color-primary);
  font-size: 1.25rem;
}

.home-start-card-featured .home-start-arrow {
  color: #fff;
}

.home-access-label {
  position: absolute;
  top: 24px;
  right: 24px;
  padding: 5px 9px;
  color: #1d4ed8;
  background: #dbeafe;
  border-radius: 999px;
  font-size: .7rem;
  font-weight: 850;
  text-transform: uppercase;
}

.cta-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
}

.cta-actions > a:not(.btn) {
  color: #dbeafe;
  font-weight: 800;
}

/* Page Offres : compare clairement le socle gratuit et le futur Premium. */
.offers-hero .page-hero-layout {
  min-height: 560px;
}

.offers-hero h1 {
  max-width: 760px;
}

.offers-hero-layout {
  grid-template-columns: minmax(0, 1.2fr) minmax(310px, .65fr);
  gap: clamp(38px, 7vw, 96px);
}

.offers-hero-copy {
  padding-block: 72px;
}

.offers-hero-panel {
  position: relative;
  display: grid;
  gap: 22px;
  padding: clamp(28px, 4vw, 42px);
  overflow: hidden;
  background: linear-gradient(145deg, rgba(30, 64, 175, .54), rgba(15, 23, 42, .88));
  border: 1px solid rgba(147, 197, 253, .35);
  border-radius: 24px;
  box-shadow: 0 30px 80px rgba(2, 6, 23, .35);
}

.offers-hero-panel::after {
  position: absolute;
  right: -55px;
  bottom: -75px;
  width: 210px;
  height: 210px;
  background: rgba(59, 130, 246, .2);
  border-radius: 50%;
  content: "";
}

.offers-hero-panel-label {
  width: fit-content;
  padding: 7px 11px;
  color: #dbeafe;
  background: rgba(37, 99, 235, .35);
  border: 1px solid rgba(147, 197, 253, .35);
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.offers-hero-panel strong {
  color: #fff;
  font-size: clamp(2.2rem, 5vw, 3.7rem);
  line-height: 1;
}

.offers-hero-panel > p {
  margin: 0 !important;
  color: #bfdbfe !important;
  font-size: .98rem !important;
}

.offers-hero-panel ul {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 12px;
}

.offers-hero-panel li {
  position: relative;
  padding-left: 27px;
  color: #f8fafc;
  line-height: 1.45;
}

.offers-hero-panel li::before {
  position: absolute;
  left: 0;
  color: #60a5fa;
  content: "✓";
  font-weight: 900;
}

.founder-offer {
  padding: 58px 0;
  color: #422006;
  background:
    radial-gradient(circle at 85% 20%, rgba(245, 158, 11, .22), transparent 27%),
    linear-gradient(135deg, #fffbeb, #fef3c7);
  border-block: 1px solid #fcd34d;
}

.founder-offer-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(260px, .55fr);
  align-items: center;
  gap: clamp(34px, 6vw, 80px);
}

.founder-offer h2 {
  max-width: 780px;
  color: #451a03;
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1.1;
}

.founder-offer-layout p {
  max-width: 780px;
  margin-top: 18px;
  color: #78350f;
  font-size: 1.04rem;
  line-height: 1.7;
}

.founder-offer-badge {
  display: grid;
  gap: 6px;
  padding: 28px;
  color: #fff;
  background: linear-gradient(145deg, #78350f, #b45309);
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: 20px;
  box-shadow: 0 22px 50px rgba(120, 53, 15, .23);
}

.founder-offer-badge span {
  color: #fde68a;
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.founder-offer-badge strong {
  font-size: clamp(1.65rem, 3vw, 2.45rem);
  line-height: 1.1;
}

.founder-offer-badge small {
  color: #fef3c7;
}

.founder-offer-note {
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid rgba(146, 64, 14, .2);
}

.founder-offer-note p {
  max-width: 1050px;
  color: #78350f;
  font-size: .88rem;
  line-height: 1.65;
}

.offers-section-header {
  margin-inline: auto;
  text-align: center;
}

.offers-comparison {
  background: linear-gradient(180deg, #f8fafc, #fff);
}

.offers-section-header .section-title,
.offers-section-header .section-text {
  margin-inline: auto;
}

.offers-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  max-width: 1040px;
  margin-inline: auto;
}

.offer-card {
  display: flex;
  flex-direction: column;
  gap: 26px;
  padding: clamp(26px, 4vw, 42px);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  box-shadow: var(--shadow-card);
}

.offer-card > header {
  position: static;
  top: auto;
  z-index: auto;
  padding: 0;
  background: transparent;
  border: 0;
  backdrop-filter: none;
}

.offer-card-premium {
  border: 2px solid #7c3aed;
  box-shadow: 0 25px 65px rgba(76, 29, 149, .16);
}

.offer-card header {
  display: grid;
  gap: 13px;
}

.offer-label {
  width: fit-content;
  padding: 5px 9px;
  color: #1d4ed8;
  background: #dbeafe;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 900;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.offer-card-premium .offer-label {
  color: #5b21b6;
  background: #ede9fe;
}

.offer-card h3 {
  color: var(--color-night);
  font-size: clamp(1.9rem, 3vw, 2.7rem);
}

.offer-card header > p:not(.offer-price) {
  color: var(--color-muted);
  line-height: 1.65;
}

.offer-price {
  display: grid;
  gap: 2px;
}

.offer-price strong {
  color: var(--color-night);
  font-size: clamp(1.45rem, 3vw, 2.1rem);
}

.offer-price span {
  color: var(--color-muted);
  font-size: .84rem;
}

.offer-feature-list {
  display: grid;
  gap: 12px;
}

.offer-feature-list li {
  position: relative;
  padding-left: 28px;
  color: #334155;
  line-height: 1.5;
}

.offer-feature-list li::before {
  position: absolute;
  top: .05em;
  left: 0;
  display: grid;
  width: 20px;
  height: 20px;
  place-items: center;
  color: #fff;
  background: #16a34a;
  border-radius: 50%;
  content: "✓";
  font-size: .7rem;
  font-weight: 900;
}

.offer-card .btn {
  width: 100%;
  margin-top: auto;
}

.offers-principle {
  align-items: start;
}

.premium-value-path {
  display: grid;
  gap: 12px;
}

.premium-value-path li {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 15px;
  padding: 18px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 12px;
}

.premium-value-path > li > span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: #fff;
  background: #2563eb;
  border-radius: 11px;
  font-size: .75rem;
  font-weight: 900;
}

.premium-value-path strong {
  color: var(--color-night);
}

.premium-value-path p {
  margin-top: 4px;
  color: var(--color-muted);
  font-size: .9rem;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.faq-grid article {
  padding: 24px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 14px;
}

.faq-grid h3 {
  color: var(--color-night);
  font-size: 1.05rem;
}

.faq-grid p {
  margin-top: 9px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 0.96rem;
  font-weight: 700;
  line-height: 1;
  transition:
    transform var(--transition),
    background var(--transition),
    border-color var(--transition),
    color var(--transition),
    box-shadow var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: var(--color-white);
  background: var(--color-primary);
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.28);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
}

.btn-secondary {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.22);
}

.btn-secondary:hover {
  color: var(--color-night);
  background: var(--color-white);
}

/* Garde le titre visible quand un lien de sommaire descend vers une ancre. */
[id] {
  scroll-margin-top: 96px;
}

/* Sections */

.section {
  padding: 88px 0;
}

.section-light {
  background: var(--color-light);
}

.section-header {
  max-width: 820px;
  margin-bottom: 42px;
}

.section-title {
  max-width: 820px;
  color: var(--color-night);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.14;
}

.section-text {
  max-width: 760px;
  margin-top: 16px;
  color: var(--color-muted);
  font-size: 1.05rem;
}

.grid {
  display: grid;
  gap: 24px;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  height: 100%;
  padding: 28px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition:
    transform var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(37, 99, 235, 0.32);
  box-shadow: 0 16px 38px rgba(15, 23, 42, 0.12);
}

.card-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 20px;
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.1);
  border-radius: 6px;
  font-size: 0.86rem;
  font-weight: 800;
}

.card h2,
.card h3 {
  margin-bottom: 10px;
  color: var(--color-night);
  line-height: 1.3;
}

.card p {
  color: var(--color-muted);
}

.compact-card {
  padding: 24px;
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.75fr);
  align-items: center;
  gap: 48px;
}

.highlight-panel {
  padding: 30px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.check-list {
  display: grid;
  gap: 16px;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  color: var(--color-text);
  font-weight: 500;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 16px;
  height: 16px;
  background: var(--color-primary);
  border-radius: 50%;
  box-shadow: inset 0 0 0 4px var(--color-white);
}

.cta-section {
  padding: 64px 0;
  color: var(--color-white);
  background: var(--color-night);
}

.cta-layout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.cta-layout h2 {
  max-width: 720px;
  color: var(--color-white);
  font-size: clamp(1.85rem, 4vw, 2.7rem);
  line-height: 1.15;
}

.cta-layout p {
  max-width: 720px;
  margin-top: 14px;
  color: rgba(255, 255, 255, 0.76);
}

/* Formulaires */

form {
  display: grid;
  gap: 18px;
}

label {
  color: var(--color-night);
  font-size: 0.92rem;
  font-weight: 700;
}

input,
textarea,
select {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  color: var(--color-night);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}

textarea {
  min-height: 150px;
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--color-primary-light);
  outline: none;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.12);
}

.contact-layout {
  align-items: start;
}

.contact-form {
  position: relative;
  padding: 28px;
}

.contact-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.contact-field {
  display: grid;
  gap: 7px;
}

.contact-field small {
  color: var(--color-muted);
}

.contact-consent {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 10px;
  font-weight: 500;
  line-height: 1.5;
}

.contact-consent input {
  width: 18px;
  min-height: 18px;
  margin-top: 3px;
}

.contact-honeypot {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.contact-turnstile {
  min-height: 65px;
  max-width: 100%;
}

.contact-form-status {
  margin: 0;
  padding: 12px 14px;
  border-radius: 6px;
}

.contact-form-status.is-pending {
  color: #1e3a8a;
  background: #dbeafe;
}

.contact-form-status.is-success {
  color: #166534;
  background: #dcfce7;
}

.contact-form-status.is-error {
  color: #991b1b;
  background: #fee2e2;
}

@media (max-width: 640px) {
  .contact-form-grid {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: 22px;
  }
}

#diagnostic-physical .course-method-steps {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

#communication .objective-showcase,
#trajet .objective-showcase {
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}

#diagnostic .course-method-steps {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

@media (max-width: 900px) {
  #diagnostic-physical .course-method-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  #diagnostic .course-method-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  #diagnostic-physical .course-method-steps {
    grid-template-columns: 1fr;
  }

  #diagnostic .course-method-steps {
    grid-template-columns: 1fr;
  }
}

/* Footer */

footer {
  margin-top: auto;
  padding: 26px 0;
  color: rgba(255, 255, 255, 0.72);
  background: var(--color-night);
}

.footer-layout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

footer p,
.footer-links a {
  font-size: 0.94rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-links a:hover {
  color: var(--color-white);
}

/* Responsive */

@media (max-width: 980px) {
  .hero-layout,
  .hero .container,
  .split-layout {
    grid-template-columns: 1fr;
  }

  .hero-card {
    max-width: 620px;
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .home-start-grid {
    grid-template-columns: 1fr;
  }

  .home-start-card {
    min-height: auto;
  }

  .founder-offer-layout,
  .offers-grid,
  .offers-hero-layout {
    grid-template-columns: 1fr;
  }

  .offers-hero-panel {
    max-width: 620px;
    margin-bottom: 64px;
  }
}

@media (max-width: 1100px) and (min-width: 761px) {
  .navbar {
    gap: 18px;
  }

  .menu {
    gap: 14px;
  }

  .menu a,
  .session-logout-button {
    font-size: 0.86rem;
  }
}

/* Feuille de route commune aux cours */

.course-learning-contract {
  padding: 46px 0;
  background: linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
  border-bottom: 1px solid var(--color-border);
}

.course-contract-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 24px;
}

.course-contract-heading h2 {
  margin: 4px 0 0;
  color: var(--color-night);
  font-size: clamp(1.55rem, 3vw, 2.15rem);
}

.course-contract-heading > p {
  max-width: 570px;
  margin: 0;
  color: var(--color-muted);
}

.course-contract-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.course-contract-grid article {
  min-width: 0;
  padding: 17px 18px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.05);
}

.course-contract-grid span,
.course-contract-grid strong {
  display: block;
}

.course-contract-grid span {
  margin-bottom: 6px;
  color: var(--color-muted);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.course-contract-grid strong {
  color: var(--color-night);
  line-height: 1.35;
}

.course-method-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.course-method-steps li {
  display: grid;
  grid-template-columns: 30px 1fr;
  align-items: center;
  column-gap: 10px;
  min-width: 0;
}

.course-method-steps li > span {
  grid-row: 1 / 3;
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  color: var(--color-white);
  background: var(--color-primary);
  border-radius: 50%;
  font-size: 0.82rem;
  font-weight: 800;
}

.course-method-steps strong {
  color: var(--color-night);
  line-height: 1.2;
}

.course-method-steps small {
  overflow: hidden;
  color: var(--color-muted);
  line-height: 1.3;
  text-overflow: ellipsis;
}

/* Navigation pédagogique identique sur chaque module */

.course-stage-nav {
  position: relative;
  z-index: 2;
  padding: 0 0 32px;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.course-stage-nav-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.course-stage-nav a {
  display: grid;
  min-height: 108px;
  padding: 17px;
  color: var(--color-text);
  background: #f8fafc;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.course-stage-nav a:hover,
.course-stage-nav a:focus-visible {
  border-color: #60a5fa;
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.12);
  transform: translateY(-2px);
}

.course-stage-nav span {
  color: var(--color-primary);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.course-stage-nav strong {
  margin: 4px 0;
  color: var(--color-night);
  line-height: 1.25;
}

.course-stage-nav small {
  color: var(--color-muted);
  line-height: 1.35;
}

@media (max-width: 900px) {
  .course-contract-heading {
    display: block;
  }

  .course-contract-heading > p {
    margin-top: 12px;
  }

  .course-contract-grid,
  .course-method-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .course-stage-nav-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .course-learning-contract {
    padding: 34px 0;
  }

  .course-contract-grid,
  .course-method-steps {
    grid-template-columns: 1fr;
  }

  .course-stage-nav {
    padding-bottom: 24px;
  }

  .course-stage-nav-grid {
    grid-template-columns: 1fr;
  }

  .course-stage-nav a {
    min-height: auto;
  }
}

@media (max-width: 760px) {
  .navbar,
  nav {
    align-items: flex-start;
    flex-direction: column;
    min-height: auto;
    padding: 18px 0;
  }

  .menu {
    width: 100%;
    flex-wrap: wrap;
    gap: 8px;
  }

  .menu a,
  .session-logout-button {
    display: block;
    padding: 8px 10px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 6px;
    font-size: 0.9rem;
  }

  .menu a::after {
    display: none;
  }

  .hero-layout,
  .hero .container {
    min-height: auto;
    padding: 68px 0 78px;
  }

  .hero h1 {
    font-size: clamp(2.25rem, 12vw, 3.5rem);
  }

  .hero-buttons,
  .btn,
  .cta-layout {
    width: 100%;
  }

  .btn {
    text-align: center;
  }

  .section {
    padding: 64px 0;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .cta-layout,
  .footer-layout {
    align-items: flex-start;
    flex-direction: column;
  }
}

/* Navigation en parties pour les cours longs */
.course-part-selector {
  padding-top: 42px;
  padding-bottom: 36px;
  background: #f8fafc;
  border-top: 1px solid #e2e8f0;
  border-bottom: 1px solid #e2e8f0;
}

.course-part-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 26px;
}

.course-part-tabs button {
  display: grid;
  gap: 5px;
  min-height: 128px;
  padding: 22px;
  color: #0f172a;
  text-align: left;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 14px;
  cursor: pointer;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.course-part-tabs button:hover {
  border-color: #2563eb;
  transform: translateY(-2px);
}

.course-part-tabs button:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.3);
  outline-offset: 3px;
}

.course-part-tabs button[aria-selected="true"] {
  color: #ffffff;
  background: linear-gradient(135deg, #1d4ed8, #2563eb);
  border-color: #2563eb;
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.2);
}

.course-part-tabs span {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.course-part-tabs strong {
  font-size: 1.2rem;
}

.course-part-tabs small {
  color: #64748b;
  font-size: 0.9rem;
}

.course-part-tabs button[aria-selected="true"] small {
  color: #dbeafe;
}

.course-tabs-ready .course-part-panel[hidden] {
  display: none;
}

.course-part-transition {
  padding-top: 28px;
  padding-bottom: 52px;
}

.course-part-transition .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 24px;
  border-top: 1px solid #dbe3ef;
}

.course-part-transition .container > div {
  display: grid;
  gap: 5px;
}

.course-part-transition span {
  color: #2563eb;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.course-part-transition strong {
  color: #0f172a;
  font-size: 1.05rem;
}

@media (max-width: 760px) {
  .course-part-tabs {
    grid-template-columns: 1fr;
  }

  .course-part-tabs button {
    min-height: 0;
  }

  .course-part-transition .container {
    align-items: stretch;
    flex-direction: column;
  }

  .course-part-transition .btn {
    justify-content: center;
    width: 100%;
  }
}

/* Pilote pédagogique Couche Réseau : guider un novice du symptôme au diagnostic. */

.novice-pilot {
  color: #e2e8f0;
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.2), transparent 55%),
    #0f172a;
}

.novice-pilot .section-title,
.novice-pilot .section-text {
  color: #fff;
}

.novice-pilot .section-text {
  color: #cbd5e1;
}

.novice-pilot-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.novice-pilot-meta span {
  padding: 8px 11px;
  color: #dbeafe;
  background: rgba(37, 99, 235, 0.18);
  border: 1px solid rgba(96, 165, 250, 0.3);
  border-radius: 999px;
  font-size: 0.84rem;
}

.novice-pilot-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.65fr);
  gap: 42px;
  align-items: start;
}

.novice-ticket {
  padding: 26px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 16px;
  box-shadow: 0 20px 50px rgba(2, 6, 23, 0.28);
}

.novice-ticket > span {
  display: inline-flex;
  margin-bottom: 10px;
  padding: 6px 10px;
  color: #bfdbfe;
  background: rgba(37, 99, 235, 0.22);
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.novice-ticket > strong {
  display: block;
  margin-bottom: 18px;
  color: #fff;
  font-size: 1.25rem;
}

.novice-ticket dl,
.novice-ticket dl div {
  margin: 0;
}

.novice-ticket dl div {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  padding: 11px 0;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
}

.novice-ticket dt {
  color: #94a3b8;
}

.novice-ticket dd {
  margin: 0;
  color: #f8fafc;
  font-weight: 800;
  text-align: right;
}

.novice-mission-path {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  margin-top: 34px;
}

.novice-mission-path article {
  min-width: 0;
  padding: 17px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(148, 163, 184, 0.24);
  border-radius: 12px;
}

.novice-mission-path span,
.novice-mission-path strong,
.novice-mission-path small {
  display: block;
}

.novice-mission-path span {
  color: #60a5fa;
  font-size: 0.76rem;
  font-weight: 900;
}

.novice-mission-path strong {
  margin: 5px 0;
  color: #fff;
}

.novice-mission-path small {
  color: #94a3b8;
  line-height: 1.35;
}

.novice-diagnostic-method {
  display: grid;
  grid-template-columns: minmax(240px, 0.7fr) minmax(0, 1.3fr);
  gap: 28px;
  margin-top: 22px;
  padding: 26px;
  color: #0f172a;
  background: #fff;
  border-radius: 14px;
}

.novice-diagnostic-method > div > span,
.novice-explain-back span {
  color: #2563eb;
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.novice-diagnostic-method h3,
.novice-explain-back h3 {
  margin: 7px 0 10px;
  color: #0f172a;
  font-size: 1.35rem;
}

.novice-diagnostic-method p,
.novice-explain-back p {
  color: #64748b;
}

.novice-diagnostic-method ol {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.novice-diagnostic-method li {
  padding: 14px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 10px;
}

.novice-diagnostic-method li strong,
.novice-diagnostic-method li small {
  display: block;
}

.novice-diagnostic-method li small {
  margin-top: 5px;
  color: #475569;
  line-height: 1.4;
}

.novice-guide-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 0 0 34px;
}

.novice-guide-grid article {
  padding: 22px;
  background: #fff;
  border: 1px solid #cbd5e1;
  border-top: 4px solid #2563eb;
  border-radius: 12px;
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.07);
}

.novice-guide-grid span,
.novice-guide-grid strong {
  display: block;
}

.novice-guide-grid span {
  margin-bottom: 8px;
  color: #2563eb;
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.novice-guide-grid strong {
  color: #0f172a;
  line-height: 1.45;
}

.novice-check {
  margin-top: 26px;
  padding: 20px 22px;
  background: #eff6ff;
  border: 1px solid #93c5fd;
  border-radius: 12px;
}

.novice-check summary {
  color: #0f172a;
  cursor: pointer;
  font-weight: 800;
}

.novice-check p {
  margin-top: 14px;
  color: #334155;
}

.novice-glossary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
}

.novice-glossary-grid div {
  padding: 22px;
  background: #fff;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
}

.novice-glossary-grid dt {
  color: #0f172a;
  font-size: 1.05rem;
  font-weight: 900;
}

.novice-glossary-grid dd {
  margin: 8px 0 0;
  color: #64748b;
  line-height: 1.55;
}

.novice-explain-back {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.8fr);
  gap: 28px;
  margin-bottom: 28px;
  padding: 26px;
  background: #fff;
  border: 1px solid #93c5fd;
  border-left: 5px solid #2563eb;
  border-radius: 14px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.07);
}

.novice-explain-back ol {
  margin: 0;
  padding-left: 22px;
  color: #334155;
}

.novice-explain-back li + li {
  margin-top: 7px;
}

.workshop-deliverable {
  padding: 11px 12px;
  color: #334155;
  background: #eff6ff;
  border-radius: 8px;
  font-size: 0.9rem;
}

.autonomous-mission-brief {
  padding: 30px;
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-left: 5px solid #f59e0b;
  border-radius: 14px;
}

.autonomous-report-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.autonomous-report-grid label,
.autonomous-report-grid span {
  display: block;
}

.autonomous-report-grid span {
  margin-bottom: 8px;
  color: #0f172a;
  font-weight: 800;
}

.autonomous-report-grid textarea {
  width: 100%;
  min-height: 120px;
  padding: 13px;
  color: #0f172a;
  background: #fff;
  border: 1px solid #94a3b8;
  border-radius: 9px;
  font: inherit;
  resize: vertical;
}

.autonomous-report-grid textarea:focus {
  border-color: #2563eb;
  outline: 3px solid rgba(37, 99, 235, 0.16);
}

.autonomous-note {
  margin-top: 14px;
  color: #64748b;
  font-size: 0.88rem;
}

.autonomous-validation {
  margin-top: 20px;
}

.autonomous-validation > summary {
  padding: 17px 20px;
  color: #fff;
  background: #0f172a;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 800;
}

.autonomous-validation[open] > summary {
  margin-bottom: 20px;
}

.novice-workshop-levels {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 28px;
}

.novice-workshop-levels article {
  padding: 20px;
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
}

.novice-workshop-levels span {
  display: grid;
  width: 32px;
  height: 32px;
  margin-bottom: 12px;
  place-items: center;
  color: #fff;
  background: #2563eb;
  border-radius: 50%;
  font-size: 0.8rem;
  font-weight: 900;
}

.novice-workshop-levels strong {
  display: block;
  color: #0f172a;
  font-size: 1.05rem;
}

.novice-workshop-levels p {
  margin-top: 6px;
  color: #64748b;
}

@media (max-width: 900px) {
  .novice-pilot-layout,
  .novice-guide-grid,
  .novice-workshop-levels,
  .novice-diagnostic-method,
  .novice-glossary-grid,
  .novice-explain-back,
  .autonomous-report-grid {
    grid-template-columns: 1fr;
  }

  .novice-mission-path {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .novice-diagnostic-method ol {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .novice-pilot-layout {
    gap: 28px;
  }

  .novice-ticket {
    padding: 20px;
  }

  .novice-ticket dl div,
  .novice-mission-path {
    grid-template-columns: 1fr;
  }

  .novice-ticket dd {
    text-align: left;
  }
}

@media (max-width: 420px) {
  .container {
    width: min(100% - 24px, var(--container-width));
  }

  .logo {
    font-size: 1.18rem;
  }

  .hero-card,
  .highlight-panel,
  .card {
    padding: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* Pages catalogue et cours */

.page-hero,
.course-hero {
  position: relative;
  overflow: hidden;
  color: var(--color-white);
  background:
    radial-gradient(circle at 82% 20%, rgba(37, 99, 235, 0.34), transparent 34%),
    linear-gradient(135deg, #0f172a 0%, #111c34 100%);
}

.page-hero::before,
.course-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 44px 44px;
}

.page-hero-layout,
.course-hero-layout {
  position: relative;
  z-index: 1;
  min-height: 430px;
  display: grid;
  align-items: center;
  padding: 78px 0;
}

.course-hero-layout {
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
  gap: 48px;
}

.page-hero h1,
.course-hero h1 {
  max-width: 920px;
  color: var(--color-white);
  font-size: clamp(2.35rem, 6vw, 4.4rem);
  line-height: 1.06;
}

.page-hero p:not(.hero-kicker),
.course-hero p:not(.hero-kicker) {
  max-width: 780px;
  margin-top: 22px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.08rem;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.9rem;
}

.breadcrumb a:hover {
  color: var(--color-white);
}

.course-summary {
  padding: 30px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.course-summary h2 {
  color: var(--color-white);
  font-size: 1.35rem;
}

.course-summary ul {
  display: grid;
  gap: 14px;
  margin-top: 20px;
}

.course-summary li {
  position: relative;
  padding-left: 26px;
  color: rgba(255, 255, 255, 0.78);
}

.course-summary li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 10px;
  height: 10px;
  background: var(--color-primary-light);
  border-radius: 50%;
}

.course-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.course-card .btn {
  margin-top: auto;
}

.course-level {
  color: var(--color-primary);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.course-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 4px 0 8px;
}

.course-tags li {
  padding: 6px 9px;
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.1);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
}

.timeline {
  display: grid;
  gap: 18px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  column-gap: 18px;
  row-gap: 6px;
  align-items: start;
  padding: 24px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.timeline-item span {
  grid-row: 1 / span 2;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  color: var(--color-white);
  background: var(--color-primary);
  border-radius: 6px;
  font-weight: 800;
}

.timeline-item h3,
.timeline-item p {
  grid-column: 2;
}

.timeline-item h3 {
  color: var(--color-night);
  line-height: 1.25;
}

.timeline-item p {
  max-width: 760px;
  color: var(--color-muted);
}

/* Journal des mises a jour : suit les versions alpha/beta et les changements visibles du site. */
.version-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  width: fit-content;
  margin-top: 28px;
  padding: 12px 14px;
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
}

.version-strip span,
.version-strip small {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.9rem;
}

.version-strip strong {
  padding: 6px 10px;
  color: var(--color-white);
  background: var(--color-primary);
  border-radius: 6px;
  font-size: 0.95rem;
}

.update-log {
  display: grid;
  gap: 18px;
}

.updates-pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 28px;
}

.updates-pagination button {
  min-width: 42px;
  min-height: 42px;
  padding: 8px 12px;
  color: var(--color-primary);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.updates-pagination button:hover:not(:disabled),
.updates-pagination button:focus-visible {
  background: #eff6ff;
  border-color: var(--color-primary);
}

.updates-pagination button.is-current {
  color: var(--color-white);
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.updates-pagination button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

.updates-page-status {
  margin: 12px 0 0;
  color: var(--color-muted);
  font-size: 0.86rem;
  text-align: center;
}

.update-entry {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 18px;
  padding: 24px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.update-date {
  display: grid;
  place-items: center;
  align-content: center;
  min-height: 92px;
  color: var(--color-white);
  background: var(--color-night);
  border-radius: 6px;
}

.update-date span {
  font-size: 1.7rem;
  font-weight: 800;
  line-height: 1;
}

.update-date small {
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
}

.update-content {
  min-width: 0;
}

.update-tag {
  display: inline-flex;
  margin-bottom: 10px;
  padding: 6px 10px;
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.1);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.update-content h3 {
  color: var(--color-night);
  font-size: 1.25rem;
  line-height: 1.3;
}

.update-content ul {
  display: grid;
  gap: 8px;
  margin-top: 14px;
  padding-left: 20px;
  list-style: disc;
}

.update-content li {
  color: var(--color-muted);
}

.version-rules {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.version-rule {
  display: grid;
  gap: 8px;
  padding: 20px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.06);
}

.version-rule span {
  width: fit-content;
  padding: 6px 10px;
  color: var(--color-white);
  background: var(--color-night);
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 800;
}

.version-rule strong {
  color: var(--color-night);
  font-size: 1.05rem;
}

.version-rule p {
  color: var(--color-muted);
}

/* Tableau de bord de la page d'accueil */
.training-status-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.training-status-card {
  min-height: 190px;
  padding: 24px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.training-status-card h3 {
  margin-top: 16px;
  color: var(--color-night);
  line-height: 1.3;
}

.training-status-card p {
  margin-top: 10px;
  color: var(--color-muted);
}

/* Page A venir : cartes de feuille de route pour rendre les prochains chantiers lisibles. */
.roadmap-board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.roadmap-card {
  --roadmap-color: var(--color-primary);
  --roadmap-soft: rgba(37, 99, 235, 0.1);
  display: grid;
  gap: 14px;
  min-height: 320px;
  padding: 26px;
  background:
    linear-gradient(145deg, var(--roadmap-soft), rgba(255, 255, 255, 0) 60%),
    var(--color-white);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--roadmap-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.roadmap-card.is-current {
  --roadmap-color: #2563eb;
  --roadmap-soft: rgba(37, 99, 235, 0.12);
}

.roadmap-card.is-next {
  --roadmap-color: #059669;
  --roadmap-soft: rgba(5, 150, 105, 0.12);
}

.roadmap-card.is-later {
  --roadmap-color: #d97706;
  --roadmap-soft: rgba(217, 119, 6, 0.14);
}

.roadmap-card span,
.roadmap-list span {
  width: fit-content;
  padding: 7px 10px;
  color: var(--roadmap-color, var(--color-primary));
  background: var(--roadmap-soft, rgba(37, 99, 235, 0.1));
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.roadmap-card h3,
.roadmap-list h3 {
  color: var(--color-night);
}

.roadmap-card p,
.roadmap-card li,
.roadmap-list p {
  color: var(--color-muted);
}

.roadmap-card ul {
  display: grid;
  gap: 8px;
  margin-top: auto;
  padding-left: 18px;
}

.roadmap-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.roadmap-list article {
  --roadmap-color: var(--color-primary);
  --roadmap-soft: rgba(37, 99, 235, 0.1);
  display: grid;
  gap: 12px;
  min-height: 190px;
  padding: 24px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--roadmap-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.roadmap-list article:nth-child(2) {
  --roadmap-color: #059669;
  --roadmap-soft: rgba(5, 150, 105, 0.12);
}

.roadmap-list article:nth-child(3) {
  --roadmap-color: #7c3aed;
  --roadmap-soft: rgba(124, 58, 237, 0.12);
}

.roadmap-list article:nth-child(4) {
  --roadmap-color: #e11d48;
  --roadmap-soft: rgba(225, 29, 72, 0.1);
}

.status-label {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 30px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
}

.status-ready {
  color: #166534;
  background: #dcfce7;
}

.status-progress {
  color: #92400e;
  background: #fef3c7;
}

.home-path {
  display: grid;
  gap: 12px;
  counter-reset: home-path;
}

.home-path li {
  position: relative;
  min-height: 44px;
  padding: 10px 0 10px 54px;
  counter-increment: home-path;
}

.home-path li::before {
  content: counter(home-path);
  position: absolute;
  left: 0;
  top: 4px;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  color: var(--color-white);
  background: var(--color-primary);
  border-radius: 6px;
  font-weight: 800;
}

.home-path a {
  color: var(--color-night);
  font-weight: 800;
}

.home-path a:hover {
  color: var(--color-primary);
}

/* Frise du parcours Réseau : rend l'ordre conseillé visible avant les cartes de cours. */
.network-roadmap {
  margin-top: 30px;
}

.network-roadmap ol {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.network-roadmap li {
  position: relative;
  min-width: 0;
}

.network-roadmap li:not(:last-child)::after {
  content: "\2192";
  position: absolute;
  z-index: 2;
  top: 50%;
  right: -16px;
  display: grid;
  place-items: center;
  width: 14px;
  height: 28px;
  color: #2563eb;
  font-size: 1.35rem;
  font-weight: 900;
  transform: translateY(-50%);
}

.network-roadmap a {
  display: grid;
  grid-template-rows: auto auto auto 1fr;
  gap: 8px;
  min-height: 190px;
  padding: 18px;
  color: var(--color-night);
  text-decoration: none;
  background: #fff;
  border: 1px solid #cbd5e1;
  border-top: 4px solid #2563eb;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.network-roadmap a:hover,
.network-roadmap a:focus-visible {
  border-color: #2563eb;
  box-shadow: 0 18px 36px rgba(37, 99, 235, 0.16);
  transform: translateY(-4px);
}

.network-roadmap a > span {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  color: #fff;
  background: #2563eb;
  border-radius: 9px;
  font-weight: 900;
}

.network-roadmap small {
  color: #2563eb;
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.network-roadmap strong {
  font-size: 1rem;
}

.network-roadmap p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.88rem;
}

.network-roadmap li:nth-child(3) a,
.network-roadmap li:nth-child(4) a {
  border-top-color: #0f9d8b;
}

.network-roadmap li:nth-child(3) a > span,
.network-roadmap li:nth-child(4) a > span {
  background: #0f9d8b;
}

.network-roadmap li:nth-child(5) a,
.network-roadmap li:nth-child(6) a {
  border-top-color: #7c3aed;
}

.network-roadmap li:nth-child(5) a > span,
.network-roadmap li:nth-child(6) a > span {
  background: #7c3aed;
}

.network-roadmap li:nth-child(7) a,
.network-roadmap li:nth-child(8) a {
  border-top-color: #d97706;
}

.network-roadmap li:nth-child(7) a > span,
.network-roadmap li:nth-child(8) a > span {
  background: #d97706;
}

.network-roadmap li:nth-child(4)::after {
  display: none;
}

@media (max-width: 1050px) {
  .network-roadmap ol {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .network-roadmap a {
    min-height: 0;
  }

  .network-roadmap li:not(:last-child)::after {
    display: none;
  }
}

@media (max-width: 640px) {
  .network-roadmap ol {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .network-roadmap li:not(:last-child)::after,
  .network-roadmap li:nth-child(4)::after {
    content: "\2193";
    top: auto;
    right: 50%;
    bottom: -29px;
    display: grid;
    width: 28px;
    height: 28px;
    transform: translateX(50%);
  }
}

/* Fiches mémo et glossaire */
.memo-grid,
.glossary-grid {
  display: grid;
  gap: 20px;
}

.memo-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.glossary-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.memo-card,
.glossary-entry {
  height: 100%;
  padding: 24px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.memo-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 300px;
}

.memo-card span {
  width: fit-content;
  padding: 6px 10px;
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.1);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 800;
}

.memo-card h3,
.glossary-entry h3 {
  color: var(--color-night);
  line-height: 1.3;
}

.memo-card p,
.memo-card li,
.glossary-entry p {
  color: var(--color-muted);
}

.memo-card ol,
.memo-card ul {
  display: grid;
  gap: 8px;
  padding-left: 20px;
}

.memo-card ol {
  list-style: decimal;
}

.memo-card ul {
  list-style: disc;
}

.memo-card a {
  width: fit-content;
  margin-top: auto;
  color: var(--color-primary);
  font-weight: 800;
}

.memo-card a:hover {
  color: var(--color-primary-hover);
}

.memo-table {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.memo-table p {
  padding: 10px;
  background: var(--color-light);
  border: 1px solid var(--color-border);
  border-radius: 6px;
}

.memo-table strong {
  display: block;
  color: var(--color-night);
}

.glossary-entry {
  min-height: 160px;
}

.glossary-entry p {
  margin-top: 8px;
  font-size: 0.95rem;
}

/* Index des notions */
.notion-search {
  display: grid;
  gap: 10px;
  max-width: 760px;
  margin-bottom: 24px;
}

.notion-search input {
  min-height: 58px;
  padding-inline: 18px;
  font-size: 1rem;
}

.notion-count {
  color: var(--color-muted);
  font-weight: 700;
}

.notion-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.notion-filter {
  min-height: 40px;
  padding: 9px 13px;
  color: var(--color-night);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 800;
  cursor: pointer;
  transition: color var(--transition), background var(--transition), border-color var(--transition);
}

.notion-filter:hover,
.notion-filter.is-active {
  color: var(--color-white);
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.notion-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.notion-card {
  display: flex;
  flex-direction: column;
  min-height: 210px;
  padding: 24px;
  color: var(--color-text);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.notion-card:hover {
  transform: translateY(-3px);
  border-color: rgba(37, 99, 235, 0.34);
  box-shadow: 0 16px 38px rgba(15, 23, 42, 0.12);
}

.notion-card[hidden] {
  display: none;
}

.notion-card span {
  width: fit-content;
  margin-bottom: 16px;
  padding: 6px 10px;
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.1);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 800;
}

.notion-card h3 {
  color: var(--color-night);
  line-height: 1.3;
}

.notion-card p {
  margin-top: 10px;
  color: var(--color-muted);
}

.session-demo,
.encapsulation-map {
  display: grid;
  gap: 16px;
  margin: 30px 0;
}

.session-demo {
  grid-template-columns: minmax(160px, 0.7fr) minmax(0, 1.4fr) minmax(160px, 0.7fr);
  align-items: stretch;
}

.session-host,
.session-flow,
.encapsulation-map div {
  padding: 20px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.session-host {
  display: grid;
  align-content: center;
  gap: 8px;
  background: var(--color-night);
}

.session-host span,
.session-host strong {
  color: var(--color-white);
}

.session-host span,
.session-flow span {
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
}

.session-host span {
  color: rgba(255, 255, 255, 0.68);
}

.session-host-alt {
  background: var(--color-primary);
}

.session-flows {
  display: grid;
  gap: 12px;
}

.session-flow {
  position: relative;
  border-left: 4px solid var(--color-primary);
}

.session-flow span {
  color: var(--color-primary);
}

.session-flow strong,
.encapsulation-map strong {
  display: block;
  margin-top: 6px;
  color: var(--color-night);
}

.session-flow p,
.encapsulation-map p {
  margin-top: 4px;
  color: var(--color-muted);
}

.encapsulation-map {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.encapsulation-map div {
  min-height: 158px;
}

.encapsulation-map span {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  color: var(--color-white);
  background: var(--color-primary);
  border-radius: 6px;
  font-weight: 800;
}

.lesson-blocks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.lesson-block {
  padding: 24px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.lesson-block h3 {
  color: var(--color-night);
}

.lesson-block p {
  margin-top: 8px;
  color: var(--color-muted);
}

.lesson-note {
  padding-top: 10px;
  color: var(--color-primary) !important;
  font-weight: 700;
}

@media (max-width: 980px) {
  .course-hero-layout,
  .lesson-blocks,
  .session-demo,
  .encapsulation-map {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .page-hero-layout,
  .course-hero-layout {
    min-height: auto;
    padding: 58px 0 66px;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }

  .training-status-grid {
    grid-template-columns: 1fr;
  }

  .home-start-card {
    padding: 18px;
  }

  .cta-actions,
  .cta-actions .btn {
    width: 100%;
  }

  .faq-grid {
    grid-template-columns: 1fr;
  }

  .founder-offer {
    padding: 44px 0;
  }

  .offers-hero-copy {
    padding: 0;
  }

  .offers-hero-panel {
    margin-bottom: 0;
    border-radius: 18px;
  }

  .roadmap-board,
  .roadmap-list {
    grid-template-columns: 1fr;
  }

  .version-rules {
    grid-template-columns: 1fr;
  }

  .update-entry {
    grid-template-columns: 1fr;
    padding: 18px;
  }

  .update-date {
    width: fit-content;
    min-width: 92px;
  }

  .version-strip {
    width: 100%;
  }

  .updates-page-nav {
    flex-basis: calc(50% - 4px);
  }

  .memo-grid,
  .glossary-grid,
  .notion-grid {
    grid-template-columns: 1fr;
  }
}


/* Contenu pedagogique des cours */

.course-toc {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.course-toc a {
  padding: 16px 18px;
  color: var(--color-night);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-weight: 700;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  transition: transform var(--transition), border-color var(--transition), color var(--transition);
}

.course-toc a:hover {
  color: var(--color-primary);
  border-color: rgba(37, 99, 235, 0.35);
  transform: translateY(-2px);
}

.course-content {
  background: var(--color-white);
}

.lesson-section {
  padding: 88px 0;
}

.lesson-layout {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 34px;
  align-items: start;
}

.lesson-marker {
  position: sticky;
  top: 100px;
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  color: var(--color-white);
  background: var(--color-primary);
  border-radius: 8px;
  font-weight: 800;
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.24);
}

.lesson-body {
  max-width: 980px;
}

.lesson-body h2 {
  max-width: 860px;
  color: var(--color-night);
  font-size: clamp(1.9rem, 4vw, 3rem);
  line-height: 1.14;
}

.lesson-body > p {
  max-width: 860px;
  margin-top: 18px;
  color: var(--color-text);
  font-size: 1.04rem;
}

.info-box,
.exercise-box {
  margin-top: 28px;
  padding: 24px;
  background: var(--color-light);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius);
}

.info-box h3,
.exercise-box h3 {
  color: var(--color-night);
}

.info-box p,
.exercise-box p {
  margin-top: 8px;
  color: var(--color-muted);
}

.exercise-box ul {
  display: grid;
  gap: 10px;
  margin-top: 14px;
  padding-left: 20px;
  list-style: disc;
}

/* Parcours pilote : progression courte et résultat concret pour les modules débutants. */
.course-meta {
  display: grid;
  gap: 10px;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.course-meta div {
  display: flex;
  justify-content: space-between;
  gap: 18px;
}

.course-meta dt {
  color: rgba(255, 255, 255, 0.7);
}

.course-meta dd {
  margin: 0;
  color: var(--color-white);
  font-weight: 800;
  text-align: right;
}

.learning-method {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
  padding: 0;
  list-style: none;
}

.learning-method li {
  display: grid;
  gap: 8px;
  min-height: 158px;
  padding: 20px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-primary);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.learning-method span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  color: var(--color-white);
  background: var(--color-primary);
  border-radius: 999px;
  font-weight: 800;
}

.learning-method strong {
  color: var(--color-night);
}

.learning-method small {
  color: var(--color-muted);
  font-size: 0.86rem;
  line-height: 1.5;
}

.practice-case {
  margin-top: 30px;
  padding: 26px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.practice-case-heading h3 {
  margin-top: 6px;
  color: var(--color-night);
  font-size: 1.35rem;
}

.practice-case-heading > p:last-child {
  margin-top: 8px;
  color: var(--color-muted);
}

.prompt-comparison,
.course-result-grid {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

.prompt-comparison {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.prompt-card {
  display: grid;
  gap: 12px;
  padding: 20px;
  border: 1px solid;
  border-radius: 12px;
}

.prompt-card span {
  width: fit-content;
  padding: 5px 9px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

.prompt-card p,
.prompt-card strong {
  line-height: 1.6;
}

.prompt-card.is-risky {
  background: #fff1f2;
  border-color: #fecdd3;
}

.prompt-card.is-risky span {
  color: #9f1239;
  background: #ffe4e6;
}

.prompt-card.is-safe {
  background: #ecfdf5;
  border-color: #a7f3d0;
}

.prompt-card.is-safe span {
  color: #166534;
  background: #dcfce7;
}

.practice-answer {
  padding: 16px;
  background: var(--color-white);
  border-radius: 10px;
}

.course-result-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.course-result-grid article {
  padding: 22px;
  background: var(--color-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.course-result-grid span {
  color: var(--color-primary);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.course-result-grid h3 {
  margin-top: 8px;
  color: var(--color-night);
}

.course-result-grid p {
  margin-top: 8px;
  color: var(--color-muted);
}

.action-checklist {
  margin-top: 24px;
  padding: 24px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-left: 5px solid var(--color-primary);
  border-radius: var(--radius);
}

.action-checklist h3 {
  color: var(--color-night);
}

.action-checklist ul {
  display: grid;
  gap: 11px;
  margin-top: 14px;
  padding: 0;
  list-style: none;
}

.action-checklist li {
  position: relative;
  padding-left: 28px;
}

.action-checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #15803d;
  font-weight: 900;
}

.course-action-button {
  margin-top: 24px;
}

@media (max-width: 900px) {
  .learning-method {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .learning-method li:last-child {
    grid-column: 1 / -1;
    min-height: auto;
  }

  .course-result-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .learning-method,
  .prompt-comparison {
    grid-template-columns: 1fr;
  }

  .learning-method li,
  .learning-method li:last-child {
    grid-column: auto;
    min-height: auto;
  }

  .practice-case,
  .action-checklist {
    padding: 20px;
  }

  .course-meta div {
    display: grid;
    gap: 2px;
  }

  .course-meta dd {
    text-align: left;
  }
}

/* Schemas pedagogiques : blocs visuels reutilisables pour expliquer les notions reseau sans image externe. */
.learning-diagram {
  display: grid;
  gap: 20px;
  margin: 30px 0;
  padding: 26px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.diagram-heading {
  display: grid;
  gap: 6px;
}

.diagram-heading span {
  width: fit-content;
  padding: 6px 10px;
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.1);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.diagram-heading h3 {
  color: var(--color-night);
  font-size: 1.25rem;
  line-height: 1.3;
}

.diagram-note {
  padding: 14px 16px;
  color: var(--color-text);
  background: var(--color-light);
  border-left: 4px solid var(--color-primary);
  border-radius: 6px;
}

/* Comparaison IPv4 / IPv6 : rend les deux formats plus lisibles qu'une simple liste de texte. */
.ip-version-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin: 30px 0;
}

.ip-version-card {
  display: grid;
  gap: 18px;
  padding: 24px;
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(255, 255, 255, 0) 42%),
    var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.ip-version-heading {
  display: grid;
  gap: 8px;
}

.ip-version-heading span {
  width: fit-content;
  padding: 6px 10px;
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.1);
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.ip-version-heading h3 {
  color: var(--color-night);
  font-size: 1.18rem;
  line-height: 1.3;
}

.ip-version-card p {
  color: var(--color-muted);
}

.ip-example-card {
  display: grid;
  gap: 6px;
  padding: 18px;
  color: var(--color-white);
  background: var(--color-night);
  border-radius: var(--radius);
  box-shadow: 0 14px 26px rgba(15, 23, 42, 0.2);
}

.ip-example-card.is-ipv6 {
  background: linear-gradient(135deg, #1e3a8a, #0f172a);
}

.ip-example-card small,
.ip-example-card span {
  color: rgba(255, 255, 255, 0.72);
  font-weight: 700;
}

.ip-example-card strong {
  color: var(--color-white);
  font-family: Consolas, "Courier New", monospace;
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  line-height: 1.15;
  overflow-wrap: anywhere;
}

.ip-metric-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.ip-metric-row div {
  display: grid;
  gap: 3px;
  min-height: 74px;
  place-items: center;
  padding: 12px;
  text-align: center;
  background: var(--color-light);
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.ip-metric-row strong {
  color: var(--color-night);
  font-size: 1.25rem;
  line-height: 1;
}

.ip-metric-row span {
  color: var(--color-muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.ip-card-note {
  padding-left: 14px;
  border-left: 3px solid var(--color-primary);
}

/* Galerie des protocoles : cartes colorees reutilisables pour comparer des notions techniques. */
.protocol-showcase {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 30px 0 18px;
}

.protocol-card {
  --protocol-color: var(--color-primary);
  --protocol-soft: rgba(37, 99, 235, 0.1);
  display: grid;
  gap: 18px;
  padding: 24px;
  background:
    linear-gradient(135deg, var(--protocol-soft), rgba(255, 255, 255, 0) 54%),
    var(--color-white);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--protocol-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.protocol-card.is-blue {
  --protocol-color: #2563eb;
  --protocol-soft: rgba(37, 99, 235, 0.12);
}

.protocol-card.is-green {
  --protocol-color: #059669;
  --protocol-soft: rgba(5, 150, 105, 0.12);
}

.protocol-card.is-amber {
  --protocol-color: #d97706;
  --protocol-soft: rgba(217, 119, 6, 0.14);
}

.protocol-card.is-rose {
  --protocol-color: #e11d48;
  --protocol-soft: rgba(225, 29, 72, 0.11);
}

.protocol-card-header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: center;
}

.protocol-mark {
  display: grid;
  place-items: center;
  min-width: 68px;
  min-height: 54px;
  padding: 10px;
  color: var(--color-white);
  background: var(--protocol-color);
  border-radius: 10px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 1.05rem;
  font-weight: 800;
  box-shadow: 0 12px 24px color-mix(in srgb, var(--protocol-color) 30%, transparent);
}

.protocol-card h3 {
  color: var(--color-night);
  font-size: 1.1rem;
  line-height: 1.25;
}

.protocol-card p {
  color: var(--color-muted);
}

.protocol-card-header p {
  margin-top: 3px;
  color: var(--protocol-color);
  font-size: 0.9rem;
  font-weight: 800;
}

.protocol-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.protocol-tags span {
  padding: 7px 10px;
  color: var(--protocol-color);
  background: var(--protocol-soft);
  border: 1px solid color-mix(in srgb, var(--protocol-color) 22%, transparent);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
}

.protocol-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding: 18px 20px;
  color: var(--color-text);
  background: #f8fafc;
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius);
}

.protocol-summary strong {
  color: var(--color-night);
}

/* Cartes de concepts : version coloree pour remplacer les cartes generiques dans les chapitres. */
.objective-showcase,
.concept-showcase,
.route-step-grid,
.device-showcase,
.journey-timeline,
.recap-showcase {
  display: grid;
  gap: 18px;
  margin: 30px 0 18px;
}

.objective-showcase {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.objective-card {
  display: grid;
  gap: 12px;
  padding: 22px;
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(255, 255, 255, 0) 55%),
    var(--color-white);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-primary);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.objective-card span {
  display: grid;
  place-items: center;
  width: 46px;
  height: 40px;
  color: var(--color-white);
  background: var(--color-primary);
  border-radius: 10px;
  font-weight: 800;
}

.objective-card h3 {
  color: var(--color-night);
  font-size: 1.05rem;
}

.objective-card p {
  color: var(--color-muted);
}

.objective-card:nth-child(2) {
  border-top-color: #059669;
  background: linear-gradient(135deg, rgba(5, 150, 105, 0.1), rgba(255, 255, 255, 0) 55%), var(--color-white);
}

.objective-card:nth-child(2) span {
  background: #059669;
}

.objective-card:nth-child(3) {
  border-top-color: #d97706;
  background: linear-gradient(135deg, rgba(217, 119, 6, 0.12), rgba(255, 255, 255, 0) 55%), var(--color-white);
}

.objective-card:nth-child(3) span {
  background: #d97706;
}

.objective-card:nth-child(4) {
  border-top-color: #7c3aed;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(255, 255, 255, 0) 55%), var(--color-white);
}

.objective-card:nth-child(4) span {
  background: #7c3aed;
}

.concept-showcase {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.concept-card {
  --concept-color: #2563eb;
  --concept-soft: rgba(37, 99, 235, 0.12);
  display: grid;
  gap: 14px;
  min-height: 220px;
  padding: 24px;
  background:
    linear-gradient(135deg, var(--concept-soft), rgba(255, 255, 255, 0) 58%),
    var(--color-white);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--concept-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.concept-card.is-blue {
  --concept-color: #2563eb;
  --concept-soft: rgba(37, 99, 235, 0.12);
}

.concept-card.is-amber {
  --concept-color: #d97706;
  --concept-soft: rgba(217, 119, 6, 0.14);
}

.concept-card.is-green {
  --concept-color: #059669;
  --concept-soft: rgba(5, 150, 105, 0.12);
}

.concept-number {
  display: grid;
  place-items: center;
  width: 52px;
  height: 44px;
  color: var(--color-white);
  background: var(--concept-color);
  border-radius: 10px;
  font-weight: 800;
}

.concept-card h3,
.route-step-card h3,
.device-card h3,
.journey-step h3,
.recap-showcase h3 {
  color: var(--color-night);
}

.concept-card p,
.route-step-card p,
.device-card p,
.journey-step p,
.recap-showcase p {
  color: var(--color-muted);
}

.concept-card strong {
  color: var(--concept-color);
}

/* Encadres de synthese : garde les idees cles visibles sans revenir a une carte blanche. */
.course-callout {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding: 18px 20px;
  background: #f8fafc;
  border: 1px solid var(--color-border);
  border-left: 4px solid #2563eb;
  border-radius: var(--radius);
}

.course-callout.is-amber {
  border-left-color: #d97706;
  background: #fffbeb;
}

.course-callout.is-green {
  border-left-color: #059669;
  background: #ecfdf5;
}

.course-callout.is-rose {
  border-left-color: #e11d48;
  background: #fff1f2;
}

.course-callout strong {
  color: var(--color-night);
}

/* Focus pedagogiques : met en avant les notions qui reviennent dans les exercices. */
.cidr-focus-card,
.reasoning-card,
.ttl-focus-card {
  display: grid;
  gap: 10px;
  margin: 28px 0;
  padding: 22px;
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(255, 255, 255, 0) 58%),
    var(--color-white);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.reasoning-card {
  border-left-color: #059669;
  background: linear-gradient(135deg, rgba(5, 150, 105, 0.1), rgba(255, 255, 255, 0) 58%), var(--color-white);
}

.ttl-focus-card {
  border-left-color: #d97706;
  background: linear-gradient(135deg, rgba(217, 119, 6, 0.13), rgba(255, 255, 255, 0) 58%), var(--color-white);
}

.cidr-focus-card span,
.reasoning-card span,
.ttl-focus-card span {
  width: fit-content;
  padding: 6px 10px;
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.1);
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

.reasoning-card span {
  color: #047857;
  background: rgba(5, 150, 105, 0.12);
}

.ttl-focus-card span {
  color: #b45309;
  background: #ffedd5;
}

.cidr-focus-card h3,
.reasoning-card h3,
.ttl-focus-card h3 {
  color: var(--color-night);
}

.cidr-focus-card p,
.reasoning-card p,
.ttl-focus-card p {
  color: var(--color-muted);
}

/* Etapes de routage : cartes numerotees pour comprendre la sequence analyse / decision / transmission. */
.route-step-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.route-step-card {
  display: grid;
  gap: 12px;
  padding: 24px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.route-step-card span {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: var(--color-white);
  background: #2563eb;
  border-radius: 999px;
  font-weight: 800;
}

.route-step-card:nth-child(2) span {
  background: #d97706;
}

.route-step-card:nth-child(3) span {
  background: #059669;
}

.route-default-card {
  display: grid;
  gap: 10px;
  margin: 26px 0;
  padding: 22px;
  background:
    linear-gradient(135deg, rgba(217, 119, 6, 0.16), rgba(255, 255, 255, 0) 55%),
    var(--color-white);
  border: 1px solid #fed7aa;
  border-left: 4px solid #d97706;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.route-default-card span {
  width: fit-content;
  padding: 6px 10px;
  color: #b45309;
  background: #ffedd5;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

.route-default-card h3 {
  color: var(--color-night);
}

.route-default-card p {
  color: var(--color-muted);
}

/* Cartes equipements : compare routeur et switch Layer 3 avec un vocabulaire visuel stable. */
.device-showcase {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.device-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  padding: 24px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.device-card.is-router {
  border-top: 4px solid #2563eb;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(255, 255, 255, 0) 55%), var(--color-white);
}

.device-card.is-switch {
  border-top: 4px solid #7c3aed;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(255, 255, 255, 0) 55%), var(--color-white);
}

.device-icon {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  color: var(--color-white);
  background: #2563eb;
  border-radius: 12px;
  font-family: Consolas, "Courier New", monospace;
  font-weight: 800;
}

.device-card.is-switch .device-icon {
  background: #7c3aed;
}

.device-card ul {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  list-style: none;
}

.device-card li {
  padding: 7px 10px;
  color: var(--color-night);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 800;
}

.compare-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 26px 0;
}

.compare-strip div {
  display: grid;
  gap: 8px;
  padding: 20px;
  background: #f8fafc;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.compare-strip span {
  width: fit-content;
  padding: 6px 10px;
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.1);
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

.compare-strip strong {
  color: var(--color-night);
}

.compare-strip p {
  color: var(--color-muted);
}

/* Timeline concrete : transforme l'exemple web en parcours lisible et rythme. */
.journey-timeline {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.journey-step {
  display: grid;
  gap: 12px;
  padding: 22px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-top: 4px solid #2563eb;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.journey-step span {
  display: grid;
  place-items: center;
  width: 54px;
  height: 44px;
  color: var(--color-white);
  background: #2563eb;
  border-radius: 10px;
  font-family: Consolas, "Courier New", monospace;
  font-weight: 800;
}

.journey-step:nth-child(2) {
  border-top-color: #059669;
}

.journey-step:nth-child(2) span {
  background: #059669;
}

.journey-step:nth-child(3) {
  border-top-color: #d97706;
}

.journey-step:nth-child(3) span {
  background: #d97706;
}

.journey-step:nth-child(4) {
  border-top-color: #e11d48;
}

.journey-step:nth-child(4) span {
  background: #e11d48;
}

/* Bande de flux : schema compact pour visualiser le trajet PC > serveur. */
.network-flow-strip {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin: 30px 0;
}

.network-flow-strip article {
  position: relative;
  display: grid;
  gap: 10px;
  min-height: 150px;
  padding: 20px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.network-flow-strip article::after {
  content: "→";
  position: absolute;
  top: 50%;
  right: -15px;
  z-index: 1;
  color: var(--color-primary);
  font-weight: 800;
  transform: translateY(-50%);
}

.network-flow-strip article:last-child::after {
  content: "";
}

.network-flow-strip span {
  width: fit-content;
  padding: 6px 9px;
  color: var(--color-white);
  background: var(--color-primary);
  border-radius: 8px;
  font-weight: 800;
}

.network-flow-strip strong {
  color: var(--color-night);
  font-size: 1.05rem;
}

.network-flow-strip p {
  color: var(--color-muted);
}

/* Recapitulatif final : cartes courtes et colorees pour aider la revision. */
.recap-showcase {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.recap-showcase article {
  display: grid;
  gap: 12px;
  padding: 22px;
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(255, 255, 255, 0) 55%),
    var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.recap-showcase span {
  width: fit-content;
  padding: 7px 10px;
  color: var(--color-white);
  background: var(--color-primary);
  border-radius: 8px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.86rem;
  font-weight: 800;
}

.recap-showcase article:nth-child(2) span,
.recap-showcase article:nth-child(5) span {
  background: #059669;
}

.recap-showcase article:nth-child(3) span,
.recap-showcase article:nth-child(6) span {
  background: #d97706;
}

.recap-showcase article:nth-child(4) span {
  background: #e11d48;
}

/* Conclusion actionnable : prepare le passage des explications vers la pratique. */
.next-step-panel {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.next-step-panel article {
  display: grid;
  gap: 12px;
  padding: 22px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-primary);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.next-step-panel span {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: var(--color-white);
  background: var(--color-primary);
  border-radius: 999px;
  font-weight: 800;
}

.next-step-panel article:nth-child(2) {
  border-top-color: #059669;
}

.next-step-panel article:nth-child(2) span {
  background: #059669;
}

.next-step-panel article:nth-child(3) {
  border-top-color: #d97706;
}

.next-step-panel article:nth-child(3) span {
  background: #d97706;
}

.next-step-panel strong {
  color: var(--color-night);
}

.next-step-panel p {
  color: var(--color-muted);
}

/* Details d'adressage : distingue visuellement adresse reseau, adresse machine et diffusion IPv4. */
.address-detail-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 28px 0;
}

.address-detail {
  display: grid;
  gap: 8px;
  min-height: 150px;
  padding: 20px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.06);
}

.address-detail span {
  width: fit-content;
  padding: 6px 10px;
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.1);
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

.address-detail strong {
  color: var(--color-night);
  font-size: 1.15rem;
}

.address-detail p {
  color: var(--color-muted);
}

.ip-octets {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.ip-octet {
  display: grid;
  gap: 8px;
  min-height: 96px;
  place-items: center;
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
}

.ip-octet span {
  color: var(--color-night);
  font-size: 1.55rem;
  font-weight: 800;
}

.ip-octet small {
  color: var(--color-muted);
  font-weight: 700;
  text-transform: uppercase;
}

.ip-octet.is-network {
  background: #eff6ff;
  border-color: #bfdbfe;
}

.ip-octet.is-host {
  background: #f0fdf4;
  border-color: #bbf7d0;
}

.packet-bar {
  display: grid;
  grid-template-columns: minmax(220px, 0.8fr) minmax(280px, 1.2fr);
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.packet-segment {
  display: grid;
  gap: 8px;
  min-height: 118px;
  align-content: center;
  padding: 22px;
}

.packet-segment strong {
  color: var(--color-night);
  font-size: 1.15rem;
}

.packet-segment span {
  color: var(--color-text);
}

.packet-header {
  background: #dbeafe;
  border-right: 1px solid #bfdbfe;
}

.packet-payload {
  background: #f8fafc;
}

/* Trame Ethernet : cinq champs lisibles sur une ligne, contrairement au paquet IP en deux blocs. */
.ethernet-frame-bar {
  grid-template-columns:
    minmax(145px, 1.05fr)
    minmax(145px, 1.05fr)
    minmax(105px, 0.72fr)
    minmax(230px, 2fr)
    minmax(80px, 0.5fr);
}

.ethernet-frame-bar .packet-segment {
  min-height: 132px;
  padding: 18px;
}

.ethernet-frame-bar .packet-header {
  border-right: 1px solid #bfdbfe;
}

/* Detail du paquet IP : remplace les cartes texte par une lecture visuelle en-tete / donnees. */
.packet-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin: 30px 0 18px;
}

.packet-detail-card {
  display: grid;
  gap: 20px;
  padding: 24px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.packet-detail-card.is-header {
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(255, 255, 255, 0) 54%),
    var(--color-white);
  border-top: 4px solid #2563eb;
}

.packet-detail-card.is-payload {
  background:
    linear-gradient(135deg, rgba(5, 150, 105, 0.12), rgba(255, 255, 255, 0) 54%),
    var(--color-white);
  border-top: 4px solid #059669;
}

.packet-detail-heading {
  display: grid;
  gap: 8px;
}

.packet-detail-heading span {
  width: fit-content;
  padding: 6px 10px;
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.1);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
}

.packet-detail-card.is-payload .packet-detail-heading span {
  color: #047857;
  background: rgba(5, 150, 105, 0.12);
}

.packet-detail-heading h3 {
  color: var(--color-night);
  font-size: 1.25rem;
}

.packet-detail-heading p {
  color: var(--color-muted);
}

.packet-field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.packet-field-grid span {
  padding: 12px 14px;
  color: #1e3a8a;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 8px;
  font-weight: 800;
}

.payload-stack {
  display: grid;
  gap: 12px;
}

.payload-stack div {
  display: grid;
  gap: 4px;
  padding: 16px;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  border-radius: 8px;
}

.payload-stack strong {
  color: #065f46;
  font-family: Consolas, "Courier New", monospace;
  font-size: 1.15rem;
}

.payload-stack span {
  color: var(--color-text);
}

.packet-reading-note {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 18px 20px;
  background: #f8fafc;
  border: 1px solid var(--color-border);
  border-left: 4px solid #2563eb;
  border-radius: var(--radius);
}

.packet-reading-note strong {
  color: var(--color-night);
}

.route-path {
  display: grid;
  grid-template-columns: minmax(150px, 1fr) 34px minmax(150px, 1fr) 34px minmax(150px, 1fr) 34px minmax(150px, 1fr);
  align-items: stretch;
  gap: 10px;
}

.topology-lanes {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) 34px minmax(180px, 1fr) 34px minmax(180px, 1fr);
  align-items: stretch;
  gap: 10px;
}

.route-node,
.topology-zone {
  display: grid;
  gap: 8px;
  align-content: center;
  min-height: 118px;
  padding: 18px;
  background: var(--color-light);
  border: 1px solid var(--color-border);
  border-radius: 6px;
}

.route-node strong,
.topology-zone strong {
  color: var(--color-night);
  font-size: 1.05rem;
}

.route-node span,
.topology-zone span {
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
}

.topology-zone p {
  color: var(--color-muted);
  font-size: 0.95rem;
}

.topology-zone.is-router {
  background: #eff6ff;
  border-color: #bfdbfe;
}

.route-arrow,
.topology-connector {
  display: grid;
  place-items: center;
  color: var(--color-primary);
  font-size: 1.65rem;
  font-weight: 800;
}

/* Mini-lab reseau : outil court pour manipuler IP, masque CIDR et adresse reseau dans le cours. */
.course-lab-stack {
  display: grid;
  gap: 22px;
}

/* Mission diagnostic : atelier principal avec topologie, console et prise de decision. */
.diagnostic-mission {
  display: grid;
  gap: 24px;
  padding: 30px;
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-top: 4px solid #2563eb;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.diagnostic-mission-header {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: start;
}

.diagnostic-mission-header > div:first-child {
  display: grid;
  gap: 8px;
}

.diagnostic-mission-label {
  width: fit-content;
  padding: 6px 10px;
  color: #1d4ed8;
  background: #dbeafe;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.diagnostic-mission-header h3 {
  color: var(--color-night);
  font-size: 1.55rem;
}

.diagnostic-mission-header p {
  max-width: 760px;
  color: var(--color-muted);
}

.diagnostic-mission-score {
  display: grid;
  min-width: 118px;
  padding: 14px 18px;
  text-align: center;
  background: #0f172a;
  border-radius: 6px;
}

.diagnostic-mission-score strong {
  color: #38bdf8;
  font-size: 1.45rem;
}

.diagnostic-mission-score span {
  color: #cbd5e1;
  font-size: 0.75rem;
}

.diagnostic-topology {
  display: grid;
  grid-template-columns: minmax(110px, 1fr) minmax(70px, 0.65fr) minmax(110px, 1fr) minmax(70px, 0.65fr) minmax(110px, 1fr) minmax(70px, 0.65fr) minmax(110px, 1fr);
  gap: 10px;
  align-items: center;
  padding: 22px;
  background: #e2e8f0;
  border-radius: 6px;
}

.diagnostic-device {
  display: grid;
  gap: 5px;
  justify-items: center;
  min-width: 0;
  padding: 16px 10px;
  text-align: center;
  background: #fff;
  border: 2px solid #94a3b8;
  border-radius: 6px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.diagnostic-device.is-problem {
  border-color: #f59e0b;
}

.diagnostic-device.is-tested {
  border-color: #16a34a;
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.14);
}

.diagnostic-device-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 38px;
  color: #fff;
  background: #2563eb;
  border-radius: 5px;
  font-size: 0.75rem;
  font-weight: 900;
}

.diagnostic-device strong {
  color: var(--color-night);
  font-size: 0.88rem;
}

.diagnostic-device small {
  color: var(--color-muted);
  overflow-wrap: anywhere;
}

.diagnostic-link {
  display: grid;
  gap: 6px;
  text-align: center;
}

.diagnostic-link span {
  height: 4px;
  background: #64748b;
  border-radius: 999px;
}

.diagnostic-link small {
  color: #475569;
  font-size: 0.7rem;
  font-weight: 800;
}

.diagnostic-link.is-tested span {
  background: #16a34a;
}

.diagnostic-link.is-failed span {
  background: #dc2626;
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.14);
}

.diagnostic-workbench {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(360px, 1.2fr);
  gap: 18px;
}

.diagnostic-panel,
.diagnostic-decision {
  display: grid;
  gap: 18px;
  padding: 20px;
  background: #fff;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
}

.diagnostic-panel-title {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: start;
}

.diagnostic-panel-title > span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  color: #fff;
  background: #2563eb;
  border-radius: 5px;
  font-weight: 900;
}

.diagnostic-panel-title div {
  display: grid;
  gap: 2px;
}

.diagnostic-panel-title strong {
  color: var(--color-night);
}

.diagnostic-panel-title small {
  color: var(--color-muted);
}

.diagnostic-causes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.diagnostic-causes button {
  min-height: 48px;
  padding: 11px 13px;
  color: var(--color-night);
  text-align: left;
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-radius: 5px;
  cursor: pointer;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 800;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.diagnostic-causes button:hover,
.diagnostic-causes button.is-selected {
  color: #fff;
  background: #2563eb;
  border-color: #2563eb;
}

.diagnostic-console {
  min-width: 0;
  overflow: hidden;
  color: #d1fae5;
  background: #07120e;
  border: 1px solid #14532d;
  border-radius: 6px;
}

.diagnostic-console-bar {
  display: flex;
  gap: 7px;
  align-items: center;
  padding: 10px 14px;
  background: #10251c;
  border-bottom: 1px solid #14532d;
}

.diagnostic-console-bar span {
  width: 9px;
  height: 9px;
  background: #22c55e;
  border-radius: 50%;
}

.diagnostic-console-bar span:nth-child(2) { background: #f59e0b; }
.diagnostic-console-bar span:nth-child(3) { background: #ef4444; }

.diagnostic-console-bar strong {
  margin-left: 4px;
  color: #bbf7d0;
  font-size: 0.78rem;
}

.diagnostic-console pre {
  min-height: 170px;
  max-height: 310px;
  margin: 0;
  padding: 18px;
  overflow-x: auto;
  white-space: pre-wrap;
  color: #d1fae5;
  font-family: Consolas, monospace;
  font-size: 0.86rem;
  line-height: 1.65;
}

/* Méthode de diagnostic : cadre la mission sans révéler les commandes attendues. */
.diagnostic-method {
  display: grid;
  gap: 9px;
  padding: 14px;
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-left: 4px solid #2563eb;
  border-radius: 5px;
}

.diagnostic-method strong {
  color: var(--color-night);
}

.diagnostic-method p,
.diagnostic-method small {
  color: var(--color-muted);
  font-size: 0.86rem;
}

/* Ligne de saisie : reproduit l'invite d'un terminal tout en restant utilisable sur mobile. */
.diagnostic-command-line {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  padding: 12px 14px;
  background: #10251c;
  border-top: 1px solid #14532d;
}

.diagnostic-command-line label {
  color: #4ade80;
  font-family: Consolas, monospace;
  font-weight: 800;
}

.diagnostic-command-line input {
  min-width: 0;
  padding: 9px 10px;
  color: #dcfce7;
  background: #07120e;
  border: 1px solid #166534;
  border-radius: 4px;
  outline: none;
  font-family: Consolas, monospace;
}

.diagnostic-command-line input:focus {
  border-color: #4ade80;
  box-shadow: 0 0 0 2px rgba(74, 222, 128, 0.16);
}

.diagnostic-command-line input::placeholder {
  color: #6b8f7c;
}

.diagnostic-command-line button {
  min-height: 38px;
  padding: 8px 12px;
  color: #052e16;
  background: #4ade80;
  border: 0;
  border-radius: 4px;
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 900;
}

.diagnostic-submit {
  justify-self: start;
}

.diagnostic-submit:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.diagnostic-report {
  display: grid;
  gap: 10px;
  padding: 22px;
  background: #fff;
  border: 1px solid #cbd5e1;
  border-left: 5px solid #64748b;
  border-radius: 6px;
}

.diagnostic-report[hidden] {
  display: none;
}

.diagnostic-report.is-success {
  background: #ecfdf5;
  border-color: #86efac;
  border-left-color: #16a34a;
}

.diagnostic-report.is-error {
  background: #fff7ed;
  border-color: #fdba74;
  border-left-color: #ea580c;
}

.diagnostic-report-status {
  color: #166534;
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.diagnostic-report.is-error .diagnostic-report-status {
  color: #c2410c;
}

.diagnostic-report h4 {
  color: var(--color-night);
  font-size: 1.15rem;
}

.diagnostic-report p {
  color: var(--color-text);
}

.diagnostic-fix {
  display: grid;
  gap: 4px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid #86efac;
  border-radius: 5px;
}

.diagnostic-fix span {
  color: #166534;
  font-size: 0.75rem;
  font-weight: 900;
  text-transform: uppercase;
}

/* Mission de configuration : variante orange dédiée au TP de mise en service. */
.configuration-mission {
  border-top-color: #ea580c;
}

.configuration-mission .diagnostic-mission-label {
  color: #9a3412;
  background: #ffedd5;
}

.configuration-mission .diagnostic-panel-title > span {
  background: #ea580c;
}

.configuration-mission .diagnostic-method {
  border-left-color: #ea580c;
}

.configuration-topology {
  grid-template-columns: minmax(130px, 1fr) minmax(80px, 0.7fr) minmax(130px, 1fr) minmax(80px, 0.7fr) minmax(130px, 1fr);
}

.configuration-fix-panel[hidden] {
  display: none;
}

.configuration-fix-panel .network-lab-grid .btn {
  align-self: end;
}

/* TP IPv4/CIDR : progression en trois étapes et feuille de calcul interactive. */
.subnet-mission {
  border-top-color: #0f9d8b;
}

.subnet-mission .diagnostic-mission-label {
  color: #0f766e;
  background: #ccfbf1;
}

.subnet-method-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.subnet-method-grid article {
  display: grid;
  gap: 10px;
  padding: 20px;
  background: #fff;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.subnet-method-grid article > span,
.subnet-step-head > span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  color: #fff;
  background: #0f9d8b;
  border-radius: 5px;
  font-weight: 900;
}

.subnet-method-grid h3,
.subnet-step h3 {
  color: var(--color-night);
}

.subnet-method-grid p,
.subnet-step p {
  color: var(--color-muted);
}

.subnet-step {
  display: grid;
  gap: 18px;
  padding: 24px;
  background: #fff;
  border: 1px solid #cbd5e1;
  border-left: 5px solid #94a3b8;
  border-radius: 6px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.subnet-step.is-complete {
  border-left-color: #16a34a;
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.1);
}

.subnet-step-head {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.subnet-step-head div {
  display: grid;
  gap: 4px;
}

.subnet-brief {
  display: grid;
  gap: 7px;
  padding: 16px;
  background: #f0fdfa;
  border: 1px solid #99f6e4;
  border-left: 4px solid #0f9d8b;
  border-radius: 5px;
}

.subnet-brief strong {
  color: #115e59;
}

.subnet-answer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  align-items: end;
}

.subnet-answer-grid .btn {
  justify-self: start;
}

.subnet-answer-grid input.is-invalid {
  border-color: #dc2626;
  box-shadow: 0 0 0 2px rgba(220, 38, 38, 0.12);
}

.subnet-final-report .btn {
  justify-self: start;
  margin-top: 6px;
}

.workshop-card.is-teal {
  border-top-color: #0f9d8b;
}

/* Accès pratique : remplace les longs TP dans la page de cours par un point d'entrée compact. */
.course-practice-access {
  padding-bottom: 32px;
}

.course-practice-access + .practice-studio {
  padding-top: 40px;
}

.practice-access-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 24px;
  align-items: center;
  padding: 30px;
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-left: 5px solid #2563eb;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.practice-access-panel > div:first-child {
  display: grid;
  gap: 8px;
}

.practice-access-panel h2 {
  color: var(--color-night);
  font-size: 1.55rem;
}

.practice-access-panel p {
  color: var(--color-muted);
}

.practice-access-panel + .section-header {
  margin-top: 42px;
}

#contenu-ateliers {
  scroll-margin-top: 110px;
}

.practice-access-meta {
  display: flex;
  gap: 10px;
}

.practice-access-meta span {
  display: grid;
  min-width: 92px;
  padding: 12px;
  color: var(--color-muted);
  text-align: center;
  background: #fff;
  border: 1px solid #cbd5e1;
  border-radius: 5px;
  font-size: 0.78rem;
}

.practice-access-meta strong {
  color: #2563eb;
  font-size: 1.25rem;
}

/* Contrôles courts communs à tous les modules, distincts du quiz final noté. */
.course-check-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.course-check-card {
  padding: 0;
  overflow: hidden;
  background: #fff;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.course-check-card summary {
  padding: 20px;
  color: var(--color-night);
  font-weight: 800;
  cursor: pointer;
}

.course-check-card[open] summary {
  color: #1d4ed8;
  border-bottom: 1px solid #dbeafe;
}

.course-check-card p {
  margin: 0;
  padding: 18px 20px 20px;
  color: var(--color-muted);
}

/* Catalogue des ateliers : présente les missions comme un parcours pratique autonome. */
.workshop-catalog {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.workshop-card {
  display: grid;
  gap: 14px;
  padding: 24px;
  color: inherit;
  text-decoration: none;
  background: #fff;
  border: 1px solid #cbd5e1;
  border-top: 4px solid #2563eb;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), border-color var(--transition);
}

.workshop-card:hover {
  border-color: #60a5fa;
  transform: translateY(-2px);
}

.workshop-card.is-orange {
  border-top-color: #ea580c;
}

.workshop-card-head {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: space-between;
}

.workshop-card-head span {
  padding: 5px 8px;
  color: #1d4ed8;
  background: #dbeafe;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 900;
  text-transform: uppercase;
}

.workshop-card h2,
.workshop-card h3 {
  color: var(--color-night);
}

.workshop-card p {
  color: var(--color-muted);
}

.workshop-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.workshop-card-tags span {
  padding: 5px 8px;
  color: #334155;
  background: #f1f5f9;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 800;
}

.network-lab {
  display: grid;
  gap: 22px;
  padding: 28px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.lab-heading {
  display: grid;
  gap: 6px;
}

.lab-heading span,
.lab-scenario span {
  width: fit-content;
  padding: 6px 10px;
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.1);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.lab-heading h3 {
  color: var(--color-night);
  font-size: 1.3rem;
  line-height: 1.25;
}

.lab-heading p {
  color: var(--color-muted);
}

.network-lab-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.network-lab-field {
  display: grid;
  gap: 8px;
}

.network-lab-field span {
  color: var(--color-night);
  font-size: 0.9rem;
  font-weight: 800;
}

.lab-scenario {
  display: grid;
  align-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 14px;
  background: var(--color-light);
  border: 1px solid var(--color-border);
  border-radius: 6px;
}

.lab-scenario p {
  color: var(--color-muted);
  font-size: 0.95rem;
}

.network-lab-options {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.network-lab-option {
  min-height: 46px;
  padding: 12px 18px;
  color: var(--color-night);
  background: var(--color-light);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  transition:
    background var(--transition),
    border-color var(--transition),
    color var(--transition),
    transform var(--transition);
}

.network-lab-option:hover,
.network-lab-option.is-selected {
  color: var(--color-white);
  background: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

.network-lab-result {
  display: grid;
  gap: 6px;
  min-height: 62px;
  padding: 18px;
  color: var(--color-muted);
  background: var(--color-light);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius);
}

.network-lab-result strong {
  color: var(--color-night);
}

.network-lab-result span {
  color: var(--color-text);
}

.network-lab-result.is-success {
  background: #ecfdf5;
  border-color: #bbf7d0;
  border-left-color: #16a34a;
}

.network-lab-result.is-error {
  background: #fef2f2;
  border-color: #fecaca;
  border-left-color: #dc2626;
}

/* Simulateur IP : affiche les resultats de sous-reseau sous forme de cartes lisibles. */
.ip-calculator-result {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.ip-calculator-result article {
  display: grid;
  gap: 8px;
  min-height: 104px;
  padding: 16px;
  background: var(--color-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.ip-calculator-result span {
  color: var(--color-muted);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.ip-calculator-result strong {
  color: var(--color-night);
  font-size: 1rem;
  overflow-wrap: anywhere;
}

.ip-calculator-result p {
  color: var(--color-muted);
}

.ip-calculator-result.is-error {
  grid-template-columns: 1fr;
}

.ip-calculator-result.is-error article {
  background: #fef2f2;
  border-color: #fecaca;
}

/* Modele OSI : pile visuelle des 7 couches et composants propres a la page OSI. */
.model-compare-grid,
.osi-vocab-grid,
.encapsulation-grid {
  display: grid;
  gap: 18px;
  margin: 30px 0;
}

.model-compare-grid,
.encapsulation-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.osi-vocab-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.model-compare-card,
.osi-vocab-card,
.encapsulation-card {
  --osi-color: var(--color-primary);
  --osi-soft: rgba(37, 99, 235, 0.1);
  display: grid;
  gap: 12px;
  padding: 24px;
  background:
    linear-gradient(135deg, var(--osi-soft), rgba(255, 255, 255, 0) 58%),
    var(--color-white);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--osi-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.model-compare-card.is-blue,
.osi-vocab-card.is-blue,
.encapsulation-card.is-send {
  --osi-color: #2563eb;
  --osi-soft: rgba(37, 99, 235, 0.12);
}

.model-compare-card.is-green,
.osi-vocab-card.is-green,
.encapsulation-card.is-receive {
  --osi-color: #059669;
  --osi-soft: rgba(5, 150, 105, 0.12);
}

.osi-vocab-card.is-amber {
  --osi-color: #d97706;
  --osi-soft: rgba(217, 119, 6, 0.14);
}

.model-compare-card span,
.osi-vocab-card span,
.encapsulation-card span {
  width: fit-content;
  padding: 7px 10px;
  color: var(--osi-color);
  background: var(--osi-soft);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.model-compare-card h3,
.osi-vocab-card h3,
.encapsulation-card h3 {
  color: var(--color-night);
}

.model-compare-card p,
.osi-vocab-card p,
.encapsulation-card p {
  color: var(--color-muted);
}

.osi-lab {
  border-top: 4px solid #7c3aed;
  background:
    linear-gradient(135deg, rgba(124, 58, 237, 0.08), rgba(255, 255, 255, 0) 55%),
    var(--color-white);
}

.osi-stack {
  display: grid;
  gap: 10px;
  margin-top: 30px;
}

.layer-row {
  --layer-color: var(--color-primary);
  --layer-soft: rgba(37, 99, 235, 0.08);
  display: grid;
  grid-template-columns: 48px 180px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  padding: 18px;
  background:
    linear-gradient(135deg, var(--layer-soft), rgba(255, 255, 255, 0) 56%),
    var(--color-white);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--layer-color);
  border-radius: var(--radius);
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.06);
}

.layer-row:nth-child(1) { --layer-color: #7c3aed; --layer-soft: rgba(124, 58, 237, 0.1); }
.layer-row:nth-child(2) { --layer-color: #2563eb; --layer-soft: rgba(37, 99, 235, 0.1); }
.layer-row:nth-child(3) { --layer-color: #0891b2; --layer-soft: rgba(8, 145, 178, 0.1); }
.layer-row:nth-child(4) { --layer-color: #059669; --layer-soft: rgba(5, 150, 105, 0.1); }
.layer-row:nth-child(5) { --layer-color: #d97706; --layer-soft: rgba(217, 119, 6, 0.12); }
.layer-row:nth-child(6) { --layer-color: #e11d48; --layer-soft: rgba(225, 29, 72, 0.1); }
.layer-row:nth-child(7) { --layer-color: #0f172a; --layer-soft: rgba(15, 23, 42, 0.08); }

.layer-row span {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  color: var(--color-white);
  background: var(--layer-color);
  border-radius: 6px;
  font-weight: 800;
}

.layer-row strong {
  color: var(--color-night);
}

.layer-row p {
  color: var(--color-muted);
}

/* Lecture OSI : regroupe les 7 couches par familles pour faciliter le diagnostic. */
.osi-layer-map {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin: 30px 0;
}

.osi-layer-map article {
  --map-color: var(--color-primary);
  --map-soft: rgba(37, 99, 235, 0.1);
  display: grid;
  gap: 14px;
  min-height: 260px;
  padding: 24px;
  background:
    linear-gradient(145deg, var(--map-soft), rgba(255, 255, 255, 0) 62%),
    var(--color-white);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--map-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.osi-layer-map article.is-high {
  --map-color: #7c3aed;
  --map-soft: rgba(124, 58, 237, 0.12);
}

.osi-layer-map article.is-transport {
  --map-color: #059669;
  --map-soft: rgba(5, 150, 105, 0.12);
}

.osi-layer-map article.is-network {
  --map-color: #d97706;
  --map-soft: rgba(217, 119, 6, 0.14);
}

.osi-layer-map span {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  color: var(--color-white);
  background: var(--map-color);
  border-radius: 8px;
  font-weight: 900;
}

.osi-layer-map h3 {
  color: var(--color-night);
}

.osi-layer-map p,
.osi-layer-map li {
  color: var(--color-muted);
}

.osi-layer-map ul {
  display: grid;
  gap: 8px;
  margin-top: auto;
  padding-left: 18px;
}

/* Encapsulation OSI : rend visible la transformation progressive des donnees. */
.osi-encapsulation-path {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin: 32px 0;
}

.osi-encapsulation-path article {
  position: relative;
  display: grid;
  align-content: start;
  gap: 10px;
  min-height: 210px;
  padding: 20px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.osi-encapsulation-path article::after {
  content: "→";
  position: absolute;
  top: 50%;
  right: -14px;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  color: var(--color-white);
  background: var(--color-primary);
  border-radius: 999px;
  font-weight: 900;
  transform: translateY(-50%);
}

.osi-encapsulation-path article:last-child::after {
  content: none;
}

.osi-encapsulation-path span {
  width: fit-content;
  padding: 6px 10px;
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.1);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 900;
}

.osi-encapsulation-path strong {
  color: var(--color-night);
  font-size: 1.18rem;
}

.osi-encapsulation-path p {
  color: var(--color-muted);
}

/* Diagnostic OSI : relie les symptomes aux couches a verifier en premier. */
.osi-troubleshoot-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
}

.osi-troubleshoot-grid article {
  --diag-color: var(--color-primary);
  --diag-soft: rgba(37, 99, 235, 0.1);
  display: grid;
  gap: 10px;
  min-height: 190px;
  padding: 20px;
  background:
    linear-gradient(145deg, var(--diag-soft), rgba(255, 255, 255, 0) 58%),
    var(--color-white);
  border: 1px solid var(--color-border);
  border-bottom: 4px solid var(--diag-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.osi-troubleshoot-grid article:nth-child(2) {
  --diag-color: #059669;
  --diag-soft: rgba(5, 150, 105, 0.12);
}

.osi-troubleshoot-grid article:nth-child(3) {
  --diag-color: #d97706;
  --diag-soft: rgba(217, 119, 6, 0.14);
}

.osi-troubleshoot-grid article:nth-child(4) {
  --diag-color: #e11d48;
  --diag-soft: rgba(225, 29, 72, 0.1);
}

.osi-troubleshoot-grid span {
  width: fit-content;
  padding: 6px 10px;
  color: var(--diag-color);
  background: var(--diag-soft);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 900;
}

.osi-troubleshoot-grid h3 {
  color: var(--color-night);
}

.osi-troubleshoot-grid p {
  color: var(--color-muted);
}

.flow-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 30px 0;
}

.flow-card {
  padding: 24px;
  background: var(--color-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.flow-card span {
  display: inline-flex;
  margin-bottom: 10px;
  color: var(--color-primary);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.flow-card h3 {
  color: var(--color-night);
}

.flow-card p {
  margin-top: 8px;
  color: var(--color-muted);
}

.table-wrap {
  /* Encadre les tableaux longs et garde un defilement horizontal local si besoin. */
  max-width: 100%;
  margin-top: 28px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.protocol-table {
  /* Largeur confortable sur ordinateur pour les tableaux pedagogiques. */
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  background: var(--color-white);
}

.protocol-table th,
.protocol-table td {
  padding: 15px 16px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.protocol-table th {
  color: var(--color-night);
  background: var(--color-light);
  font-weight: 800;
}

.protocol-table td {
  color: var(--color-text);
}

.protocol-table tr:last-child td {
  border-bottom: 0;
}

.step-list {
  display: grid;
  gap: 14px;
  margin-top: 26px;
  padding-left: 22px;
}

.step-list li {
  padding-left: 4px;
  color: var(--color-text);
}

@media (max-width: 760px) {
  /* Adaptation mobile des pages de cours :
     une seule colonne, moins d'espace vertical et tableaux qui ne cassent pas l'ecran. */
  .course-toc,
  .objective-showcase,
  .concept-showcase,
  .route-step-grid,
  .device-showcase,
  .compare-strip,
  .journey-timeline,
  .network-flow-strip,
  .recap-showcase,
  .next-step-panel,
  .model-compare-grid,
  .osi-vocab-grid,
  .osi-layer-map,
  .osi-encapsulation-path,
  .osi-troubleshoot-grid,
  .encapsulation-grid,
  .ip-version-grid,
  .protocol-showcase,
  .packet-detail-grid,
  .address-detail-grid,
  .ip-octets,
  .subnet-method-grid,
  .subnet-answer-grid,
  .network-lab-grid,
  .ip-calculator-result,
  .diagnostic-mission-header,
  .diagnostic-workbench,
  .diagnostic-causes,
  .flow-grid {
    grid-template-columns: 1fr;
  }

  .diagnostic-mission {
    padding: 20px;
  }

  .diagnostic-mission-score {
    width: fit-content;
  }

  .diagnostic-topology {
    grid-template-columns: 1fr;
  }

  .diagnostic-link {
    justify-items: center;
  }

  .diagnostic-link span {
    width: 4px;
    height: 28px;
  }

  .diagnostic-command-line {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .diagnostic-command-line button {
    grid-column: 1 / -1;
  }

  .practice-access-panel,
  .course-check-grid,
  .workshop-catalog {
    grid-template-columns: 1fr;
  }

  .practice-access-meta {
    width: 100%;
  }

  .practice-access-meta span {
    flex: 1;
  }

  .ip-version-card {
    padding: 20px;
  }

  .ip-metric-row {
    grid-template-columns: 1fr;
  }

  .protocol-card {
    padding: 20px;
  }

  .protocol-card-header {
    grid-template-columns: 1fr;
  }

  .protocol-mark {
    width: fit-content;
  }

  .packet-detail-card {
    padding: 20px;
  }

  .packet-field-grid {
    grid-template-columns: 1fr;
  }

  .concept-card,
  .objective-card,
  .route-step-card,
  .device-card,
  .journey-step,
  .recap-showcase article,
  .next-step-panel article {
    min-height: auto;
    padding: 20px;
  }

  .model-compare-card,
  .osi-vocab-card,
  .encapsulation-card,
  .osi-layer-map article,
  .osi-encapsulation-path article,
  .osi-troubleshoot-grid article {
    min-height: auto;
    padding: 20px;
  }

  .osi-encapsulation-path article::after {
    top: auto;
    right: auto;
    bottom: -21px;
    left: 22px;
    transform: rotate(90deg);
  }

  .device-card {
    grid-template-columns: 1fr;
  }

  .network-flow-strip article::after {
    top: auto;
    right: auto;
    bottom: -18px;
    left: 22px;
    transform: rotate(90deg);
  }

  .learning-diagram {
    padding: 18px;
  }

  .packet-bar,
  .route-path,
  .topology-lanes {
    grid-template-columns: 1fr;
  }

  .packet-header {
    border-right: 0;
    border-bottom: 1px solid #bfdbfe;
  }

  .route-arrow,
  .topology-connector {
    min-height: 24px;
    transform: rotate(90deg);
  }

  .lesson-section {
    padding: 56px 0;
  }

  .lesson-layout {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .lesson-marker {
    position: static;
    width: 48px;
    height: 48px;
  }

  .lesson-body {
    min-width: 0;
  }

  .lesson-body h2 {
    font-size: clamp(1.55rem, 8vw, 2.1rem);
  }

  .lesson-body > p {
    font-size: 0.98rem;
  }

  .info-box,
  .exercise-box,
  .network-lab,
  .flow-card {
    padding: 18px;
  }

  .network-lab-options {
    display: grid;
    grid-template-columns: 1fr;
  }

  .network-lab-option {
    width: 100%;
  }

  .layer-row {
    grid-template-columns: 42px minmax(0, 1fr);
  }

  .layer-row p {
    grid-column: 2;
  }

  .table-wrap {
    box-shadow: 0 8px 22px rgba(15, 23, 42, 0.06);
  }

  .protocol-table {
    /* Sur telephone, le tableau se compacte au lieu d'imposer la largeur desktop. */
    min-width: 0;
    table-layout: fixed;
    font-size: 0.82rem;
  }

  .protocol-table th,
  .protocol-table td {
    padding: 11px 10px;
    overflow-wrap: anywhere;
  }
}

@media (max-width: 420px) {
  /* Ajustements tres petits ecrans pour conserver une lecture confortable. */
  .lesson-section {
    padding: 48px 0;
  }

  .lesson-marker {
    width: 42px;
    height: 42px;
    font-size: 0.86rem;
  }

  .lesson-body h2 {
    font-size: 1.55rem;
  }

  .lesson-body > p {
    font-size: 0.94rem;
  }

  .protocol-table {
    font-size: 0.76rem;
  }

  .protocol-table th,
  .protocol-table td {
    padding: 9px 8px;
  }
}

/* Quiz */

.quiz {
  display: grid;
  gap: 30px;
}

.quiz-progress {
  display: grid;
  gap: 15px;
}

.quiz-progress-track {
  height: 12px;
  overflow: hidden;
  background: #e2e8f0;
  border-radius: 999px;
}

.quiz-progress-value {
  height: 100%;
  background: linear-gradient(90deg, #2563eb, #3b82f6);
  transition: 0.35s;
}

.quiz-progress-info {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: #64748b;
  font-size: 0.9rem;
  font-weight: 700;
}

.answers {
  display: grid;
  gap: 15px;
  margin-top: 30px;
}

.quiz-pool-info {
  margin: 0;
  color: #64748b;
  font-size: 14px;
}

.answer {
  width: 100%;
  padding: 18px 22px;
  color: #0f172a;
  background: #fff;
  border: 2px solid #dbeafe;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: 0.2s;
}

.answer:hover {
  background: #eff6ff;
  border-color: #2563eb;
  transform: translateY(-2px);
}

.answer.selected {
  color: #fff;
  background: #2563eb;
  border-color: #2563eb;
}

.answer.correct {
  color: #fff;
  background: #22c55e;
  border-color: #22c55e;
}

.answer.wrong {
  color: #fff;
  background: #ef4444;
  border-color: #ef4444;
}

.answer:disabled {
  cursor: default;
}

#validateBtn {
  margin-top: 30px;
}

.quiz-success,
.quiz-error {
  padding: 20px;
  border-left: 5px solid;
  border-radius: 8px;
}

.quiz-success {
  background: #ecfdf5;
  border-left-color: #22c55e;
}

.quiz-error {
  background: #fef2f2;
  border-left-color: #ef4444;
}

.quiz-success h3,
.quiz-error h3 {
  margin-bottom: 10px;
}

.quiz-success h3 {
  color: #15803d;
}

.quiz-error h3 {
  color: #dc2626;
}

.quiz-end {
  text-align: center;
}

.quiz-end h2 {
  margin-bottom: 10px;
}

.quiz-end h3 {
  margin: 25px 0;
  color: #2563eb;
  font-size: 42px;
}

.quiz-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  margin-top: 40px;
}

.quiz-correction {
  margin-top: 40px;
  text-align: left;
}

.quiz-correction h3 {
  margin-bottom: 20px;
}

.quiz-error-card {
  margin-bottom: 20px;
  padding: 20px;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
}

.quiz-error-card h4 {
  margin-bottom: 15px;
  color: #0f172a;
}

.quiz-error-card p {
  margin-bottom: 8px;
}

.quiz-perfect {
  margin: 35px 0;
  padding: 20px;
  color: #166534;
  background: #dcfce7;
  border-radius: 10px;
  font-size: 18px;
  font-weight: 700;
}

@media (max-width: 768px) {
  .quiz-progress-info {
    flex-direction: column;
    align-items: flex-start;
  }

  .quiz-actions {
    flex-direction: column;
  }

  .quiz-actions .btn {
    width: 100%;
  }

  .quiz-end h3 {
    font-size: 32px;
  }
}

.btn-outline {
  color: var(--color-primary);
  background: transparent;
  border-color: rgba(37, 99, 235, 0.35);
}

.btn-outline:hover {
  color: var(--color-white);
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

/* Liens de fin de formation */

.related-learning {
  padding: 88px 0;
}

.related-learning .section-header {
  margin-bottom: 34px;
}

.course-inline-links {
  margin-top: 32px;
}

.learning-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.learning-card {
  display: flex;
  flex-direction: column;
  min-height: 210px;
  padding: 24px;
  color: var(--color-text);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.learning-card:hover {
  transform: translateY(-3px);
  border-color: rgba(37, 99, 235, 0.34);
  box-shadow: 0 16px 38px rgba(15, 23, 42, 0.12);
}

.learning-card span {
  width: fit-content;
  margin-bottom: 16px;
  padding: 6px 10px;
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.1);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 800;
}

.learning-card strong {
  color: var(--color-night);
  font-size: 1.18rem;
  line-height: 1.3;
}

.learning-card p {
  margin-top: 10px;
  color: var(--color-muted);
}

.learning-card-muted {
  background: var(--color-light);
}

/* Supports PDF accessibles uniquement apres le controle PHP du cours. */

.course-downloads .section-header {
  margin-bottom: 28px;
}

.course-download-list {
  display: grid;
  gap: 14px;
}

.course-download-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 22px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.course-download-copy {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 14px;
}

.course-download-badge {
  padding: 5px 8px;
  color: var(--color-white);
  background: var(--color-night);
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.course-download-card h3 {
  margin: 0 0 5px;
  color: var(--color-night);
  font-size: 1.05rem;
}

.course-download-card p {
  margin: 0;
  color: var(--color-muted);
}

.course-download-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 10px;
}

.course-download-actions .btn {
  min-height: 42px;
  padding: 10px 14px;
}

.course-download-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 14px;
  color: var(--color-muted);
  background: var(--color-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  font-size: 0.9rem;
  font-weight: 800;
  cursor: not-allowed;
}

/* Ateliers intégrés : même structure pédagogique dans tous les cours. */
.practice-studio .section-header {
  margin-bottom: 28px;
}

.practice-studio-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.practice-studio-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-primary);
  border-radius: 14px;
  box-shadow: var(--shadow-card);
}

.practice-studio-card:nth-child(2) {
  border-top-color: #0f766e;
}

.practice-studio-card:nth-child(3) {
  border-top-color: #d97706;
}

.practice-studio-badge {
  width: fit-content;
  padding: 5px 9px;
  color: #1d4ed8;
  background: #dbeafe;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.practice-studio-card:nth-child(2) .practice-studio-badge {
  color: #0f766e;
  background: #ccfbf1;
}

.practice-studio-card:nth-child(3) .practice-studio-badge {
  color: #9a3412;
  background: #ffedd5;
}

.practice-studio-card h3 {
  color: var(--color-night);
  font-size: 1.16rem;
  line-height: 1.3;
}

.practice-studio-card p,
.practice-studio-card li {
  color: var(--color-text);
}

.practice-studio-card ol,
.practice-studio-card ul {
  display: grid;
  gap: 8px;
  padding-left: 20px;
}

.practice-studio-card ol {
  list-style: decimal;
}

.practice-studio-card ul {
  list-style: disc;
}

.practice-studio-card details {
  margin-top: auto;
  padding: 12px 14px;
  background: var(--color-light);
  border: 1px solid var(--color-border);
  border-radius: 9px;
}

.practice-studio-card summary {
  color: var(--color-primary-hover);
  font-weight: 800;
  cursor: pointer;
}

.practice-studio-card details p {
  margin-top: 9px;
}

.practice-deliverable {
  margin-top: auto;
  padding: 12px;
  background: #ecfdf5;
  border-left: 3px solid #0f766e;
  border-radius: 7px;
}

.practice-action {
  display: inline-flex;
  width: fit-content;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  margin-top: auto;
  padding: 9px 14px;
  color: #fff;
  background: var(--color-primary);
  border-radius: 8px;
  font-weight: 850;
}

.practice-action:hover {
  background: var(--color-primary-hover);
}

.practice-options {
  display: grid;
  gap: 9px;
}

.practice-options button {
  min-height: 44px;
  padding: 10px 12px;
  color: var(--color-night);
  background: #fff;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  font: inherit;
  font-weight: 750;
  text-align: left;
  cursor: pointer;
}

.practice-options button:hover:not(:disabled) {
  border-color: var(--color-primary);
  background: #eff6ff;
}

.practice-options button.is-correct {
  color: #065f46;
  background: #d1fae5;
  border-color: #10b981;
}

.practice-options button.is-wrong {
  color: #991b1b;
  background: #fee2e2;
  border-color: #ef4444;
}

.practice-options button:disabled {
  cursor: default;
}

.practice-feedback {
  padding: 11px 12px;
  background: #fff7ed;
  border-radius: 8px;
  font-weight: 750;
}

.practice-mini-lab.is-complete .practice-feedback {
  color: #065f46;
  background: #ecfdf5;
}

@media (max-width: 980px) {
  .practice-studio-grid {
    grid-template-columns: 1fr;
  }

  .learning-links {
    grid-template-columns: 1fr;
  }

  .learning-card {
    min-height: auto;
  }

  .course-download-card {
    align-items: stretch;
    flex-direction: column;
  }

  .course-download-actions {
    flex-wrap: wrap;
  }
}

@media (max-width: 560px) {
  .course-download-copy {
    grid-template-columns: 1fr;
  }

  .course-download-actions .btn {
    flex: 1 1 100%;
  }
}
.layer3-reinforcement-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 30px;
}

.layer3-reinforcement-card {
  overflow: hidden;
  background: #fff;
  border: 1px solid #d7e0ec;
  border-radius: 14px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.06);
}

.layer3-reinforcement-card summary {
  display: grid;
  gap: 8px;
  min-height: 150px;
  padding: 22px;
  cursor: pointer;
  list-style: none;
}

.layer3-reinforcement-card summary::-webkit-details-marker {
  display: none;
}

.layer3-reinforcement-card summary > span {
  width: fit-content;
  padding: 5px 8px;
  color: #1d4ed8;
  background: #dbeafe;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 900;
}

.layer3-reinforcement-card summary strong {
  color: #0f172a;
  font-size: 1.08rem;
}

.layer3-reinforcement-card summary small,
.layer3-reinforcement-card > div p {
  color: #64748b;
}

.layer3-reinforcement-card[open] summary {
  min-height: 0;
  background: #f8fafc;
  border-bottom: 1px solid #d7e0ec;
}

.layer3-reinforcement-card > div {
  padding: 20px 22px 24px;
}

.layer3-reinforcement-card > div p {
  line-height: 1.65;
}

.layer3-reinforcement-card > div a,
.quiz-review-link {
  color: #1d4ed8;
  font-weight: 800;
}

.layer3-memory-tip {
  padding: 12px;
  background: #eff6ff;
  border-left: 3px solid #2563eb;
  border-radius: 6px;
}

.layer3-reinforcement-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
  padding: 18px;
  color: #e2e8f0;
  background: #0f172a;
  border-radius: 12px;
}

.layer3-reinforcement-summary span {
  padding-left: 10px;
  border-left: 1px solid #475569;
}

.quiz-review-link {
  display: inline-flex;
  margin-top: 8px;
}

@media (max-width: 760px) {
  .layer3-reinforcement-grid {
    grid-template-columns: 1fr;
  }

  .layer3-reinforcement-card summary {
    min-height: 0;
  }

  .layer3-reinforcement-summary {
    display: grid;
  }

  .layer3-reinforcement-summary span {
    padding: 0;
    border: 0;
  }
}