/* ==========================================================================
   EcAuTAL — Feuille de style principale
   --------------------------------------------------------------------------
   Structure :
     1. Variables & reset
     2. Typographie & base
     3. Layout (conteneur, grille)
     4. En-tête & navigation
     5. Héro (hero)
     6. Sections génériques
     7. Cartes (objectifs, thématiques)
     8. Planning / emploi du temps
     9. Pied de page
     10. Utilitaires & responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Variables & reset
   -------------------------------------------------------------------------- */
:root {
  /* Palette LISN (bleu marine, orange, turquoise, jaune) */
  --color-bg: #f5f7fa;
  --color-surface: #ffffff;
  --color-surface-alt: #eef1f6;
  --color-ink: #1f2532;
  --color-ink-soft: #4a5568;
  --color-muted: #8a94a6;

  --color-primary: #232f52;      /* bleu marine LISN */
  --color-primary-dark: #1a2340;
  --color-accent: #e87722;       /* orange LISN */
  --color-leaf: #1a9db5;         /* turquoise LISN */
  --color-leaf-dark: #127a8c;
  --color-yellow: #f5b800;       /* jaune LISN */
  --color-rust: #c2410c;         /* accent chaud (langue / alerte) */

  --color-border: #e2e8f0;
  --color-shadow: rgba(35, 47, 82, 0.12);

  /* Typographie */
  --font-sans: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Georgia", "Times New Roman", serif;

  /* Mesures */
  --radius: 14px;
  --radius-sm: 8px;
  --max-width: 1120px;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;

  --header-height: 72px;
}

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

* {
  margin: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--color-ink);
  background-color: var(--color-bg);
  line-height: 1.65;
  font-size: 1.0625rem;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-primary-dark);
}

/* --------------------------------------------------------------------------
   2. Typographie & base
   -------------------------------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  line-height: 1.2;
  color: var(--color-ink);
  font-weight: 700;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.4rem); }
h3 { font-size: 1.35rem; }

p {
  margin-bottom: var(--space-2);
}

.lead {
  font-size: 1.2rem;
  color: var(--color-ink-soft);
}

/* --------------------------------------------------------------------------
   3. Layout (conteneur, grille)
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

.section {
  padding-block: var(--space-5);
}

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

.section__header {
  max-width: 720px;
  margin-bottom: var(--space-4);
}

.section__header p {
  color: var(--color-ink-soft);
}

/* Petit sur-titre au-dessus des titres de section */
.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}

/* --------------------------------------------------------------------------
   4. En-tête & navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(245, 247, 250, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--color-ink);
}

.brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
  color: #fff;
  font-size: 1.2rem;
}

.brand__name small {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav__link {
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  color: var(--color-ink-soft);
}

.nav__link:hover {
  background-color: var(--color-surface-alt);
  color: var(--color-ink);
}

.nav__link.is-active {
  color: var(--color-primary);
  background-color: rgba(35, 47, 82, 0.08);
}

/* Bouton hamburger (mobile) */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  font-size: 1.2rem;
  color: var(--color-ink);
}

/* --------------------------------------------------------------------------
   5. Héro (hero)
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  padding-block: var(--space-5);
  background:
    radial-gradient(1200px 400px at 80% -10%, rgba(232, 119, 34, 0.14), transparent 60%),
    radial-gradient(900px 400px at 10% 110%, rgba(26, 157, 181, 0.12), transparent 60%),
    url("../images/hero-bg.svg") right center / cover no-repeat,
    var(--color-bg);
  overflow: hidden;
}

.hero__inner {
  max-width: 760px;
}

.hero h1 {
  margin-bottom: var(--space-2);
}

.hero .tagline {
  font-size: 1.25rem;
  color: var(--color-ink-soft);
  margin-bottom: var(--space-3);
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-ink-soft);
  box-shadow: 0 2px 6px var(--color-shadow);
}

.meta-pill svg {
  width: 18px;
  height: 18px;
  color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   6. Sections génériques
   -------------------------------------------------------------------------- */
.prose {
  max-width: 760px;
}

.prose p {
  color: var(--color-ink-soft);
}

/* Bloc d'appel à l'action (inscription) */
.cta {
  max-width: 760px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius);
  box-shadow: 0 2px 8px var(--color-shadow);
}

.cta p {
  flex: 1;
  min-width: 240px;
  margin: 0;
  color: var(--color-ink-soft);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
  background-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(35, 47, 82, 0.25);
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.btn:hover {
  background-color: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   7. Cartes (objectifs, thématiques)
   -------------------------------------------------------------------------- */
.grid {
  display: grid;
  gap: var(--space-3);
}

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

/* Carte objectif */
.objective-card {
  display: flex;
  gap: var(--space-2);
  align-items: flex-start;
  padding: var(--space-3);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: 0 2px 8px var(--color-shadow);
}

.objective-card__icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(232, 119, 34, 0.16), rgba(35, 47, 82, 0.16));
  color: var(--color-primary);
  font-size: 1.3rem;
}

.objective-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.6rem;
}

.objective-card p {
  color: var(--color-ink-soft);
  font-size: 0.98rem;
  margin: 0;
}

.objective-card__list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--color-ink-soft);
  font-size: 0.95rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.objective-card__list li {
  padding-left: 0.15rem;
}

.objective-card__list li::marker {
  color: var(--color-accent);
}

/* Objectif principal (affiché en tête de la section objectifs) */
.objective-note {
  margin-bottom: var(--space-3);
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  background-color: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: 0 2px 8px var(--color-shadow);
}

.objective-note__label {
  display: inline-block;
  margin-bottom: 0.5rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.objective-note p {
  margin: 0;
  color: var(--color-ink-soft);
  font-size: 1.05rem;
}

/* Carte thématique */
.topic-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 2px 8px var(--color-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.topic-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 24px var(--color-shadow);
}

.topic-card__media {
  position: relative;
  aspect-ratio: 16 / 9;
  background-color: var(--color-surface-alt);
  overflow: hidden;
}

.topic-card__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Placeholder affiché tant que l'image n'est pas fournie */
.topic-card__media .placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(120% 120% at 20% 10%, rgba(232, 119, 34, 0.22), transparent 55%),
    radial-gradient(120% 120% at 90% 90%, rgba(26, 157, 181, 0.22), transparent 55%),
    var(--color-surface-alt);
  color: var(--color-muted);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}

.topic-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: var(--space-3);
}

.topic-card__body h3 {
  margin-bottom: 0.5rem;
}

.topic-card__body p {
  color: var(--color-ink-soft);
  font-size: 0.98rem;
  flex: 1;
}

.topic-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: var(--space-2);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  background-color: var(--color-surface-alt);
  color: var(--color-ink-soft);
  border: 1px solid var(--color-border);
}

.badge--teacher {
  background-color: rgba(26, 157, 181, 0.12);
  color: var(--color-leaf-dark);
  border-color: rgba(26, 157, 181, 0.28);
}

.badge--lang {
  background-color: rgba(232, 119, 34, 0.12);
  color: #b45309;
  border-color: rgba(232, 119, 34, 0.3);
}

/* Aperçu (accueil) : liste des cours dans une carte thématique */
.topic-card__sessions {
  list-style: none;
  margin: var(--space-2) 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.topic-card__session {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* Liste des sections thématiques (page thématiques) */
.topics-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* Section thématique (page thématiques) */
.topic-section {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 2px 8px var(--color-shadow);
}

.topic-section__media {
  position: relative;
  min-height: 220px;
  background-color: var(--color-surface-alt);
  overflow: hidden;
}

.topic-section__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.topic-section__media .placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(120% 120% at 20% 10%, rgba(232, 119, 34, 0.22), transparent 55%),
    radial-gradient(120% 120% at 90% 90%, rgba(26, 157, 181, 0.22), transparent 55%),
    var(--color-surface-alt);
  color: var(--color-muted);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}

.topic-section__body {
  padding: var(--space-3);
}

.topic-section__body h2 {
  margin-bottom: 0.5rem;
}

.topic-section__body > p {
  color: var(--color-ink-soft);
  font-size: 0.98rem;
  margin-bottom: var(--space-3);
}

.topic-sessions {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.topic-session {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 1rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius) - 4px);
  background-color: var(--color-surface-alt);
}

.topic-session__time {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 150px;
}

.topic-session__date {
  font-weight: 600;
  font-size: 0.9rem;
}

.topic-session__hours {
  font-size: 0.85rem;
  color: var(--color-ink-soft);
}

.topic-session__info {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
}

.topic-session__title {
  font-weight: 600;
}

.topic-session__teacher {
  font-size: 0.85rem;
  color: var(--color-ink-soft);
}

@media (max-width: 720px) {
  .topic-section {
    grid-template-columns: 1fr;
  }

  .topic-section__media {
    min-height: 160px;
  }
}

/* --------------------------------------------------------------------------
   8. Planning / emploi du temps
   -------------------------------------------------------------------------- */
.schedule {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.day {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 2px 8px var(--color-shadow);
}

.day__header {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: linear-gradient(135deg, rgba(232, 119, 34, 0.12), rgba(35, 47, 82, 0.1));
  border-bottom: 1px solid var(--color-border);
}

.day__weekday {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.day__date {
  color: var(--color-muted);
  font-size: 0.95rem;
}

.day__sessions {
  display: flex;
  flex-direction: column;
}

.session {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.session:last-child {
  border-bottom: none;
}

.session__time {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--color-ink);
  white-space: nowrap;
}

.session__time small {
  display: block;
  font-weight: 500;
  color: var(--color-muted);
  font-size: 0.8rem;
}

.session__title {
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.session__teacher {
  color: var(--color-ink-soft);
  font-size: 0.95rem;
}

.session__teacher .lang-flag {
  color: var(--color-rust);
  font-weight: 600;
  font-size: 0.85rem;
}

/* --------------------------------------------------------------------------
   9. Pied de page
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-ink);
  color: #e6eaf2;
  padding-block: var(--space-4);
  margin-top: var(--space-5);
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.site-footer__main {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  justify-content: space-between;
}

.site-footer .brand {
  color: #fff;
}

.site-footer .brand__name small {
  color: #a9b2c4;
}

.site-footer p {
  color: #a9b2c4;
  font-size: 0.9rem;
  margin: 0;
}

/* Logos des partenaires (pied de page) */
.site-footer__logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.site-footer__logos img {
  height: 44px;
  width: auto;
  background-color: #fff;
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.6rem;
}

.site-footer__logos a {
  display: inline-flex;
}

/* Mention en bas du pied de page */
.site-footer__credit {
  padding-top: var(--space-2);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.82rem;
  color: #8b95a8;
}

/* --------------------------------------------------------------------------
   10. Utilitaires & responsive
   -------------------------------------------------------------------------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.hidden { display: none !important; }

/* Bandeau d'alerte (chargement / erreur) */
.notice {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  background-color: rgba(194, 65, 12, 0.1);
  border: 1px solid rgba(194, 65, 12, 0.3);
  color: var(--color-rust);
  margin-bottom: var(--space-3);
}

@media (max-width: 860px) {
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
  :root {
    --space-5: 3rem;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 8px 16px var(--color-shadow);
    padding: var(--space-1);
  }

  .nav.is-open {
    display: flex;
  }

  .nav:not(.is-open) {
    display: none;
  }

  .nav__link {
    padding: 0.8rem 1rem;
  }

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

  .session {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }
  
}
.planning__info{
  display: flex;
  flex-direction: column;
}