/* ============================================
   SES Institute — Ressources de Formations
   Charte graphique officielle
   ============================================ */

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

/* Variables — Charte SES Institute */
:root {
  /* Violets */
  --color-violet: #7B4FD6;
  --color-violet-dark: #5A32B8;
  --color-violet-light: #9D80EC;
  --color-violet-soft: #f4f0fc;

  /* Gris */
  --color-carbon: #3D3D3B;
  --color-carbon-soft: #6a6a68;
  --color-carbon-muted: #a8a8a6;

  /* Surfaces */
  --color-white: #ffffff;
  --color-bg: #fafaf9;
  --color-surface: #ffffff;
  --color-border: #e8e6e3;
  --color-border-strong: #d0cdc9;

  /* Tags / accents */
  --color-tag-bg: #f0ebfa;
  --color-tag-text: #5A32B8;

  /* Effets */
  --shadow-sm: 0 1px 2px rgba(61, 61, 59, 0.04);
  --shadow-md: 0 4px 12px rgba(61, 61, 59, 0.06);
  --shadow-lg: 0 8px 24px rgba(123, 79, 214, 0.10);

  /* Géométrie */
  --radius: 6px;
  --radius-lg: 10px;
  --max-width: 1200px;
}

/* Typo de base */
body {
  font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-weight: 300;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-carbon);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

/* En-tête */
.site-header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: 28px 0;
}

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

.site-logo {
  height: 56px;
  width: auto;
  flex-shrink: 0;
}

.header-text {
  flex: 1;
  border-left: 1px solid var(--color-border);
  padding-left: 28px;
}

.site-title {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--color-carbon);
  margin-bottom: 2px;
}

.site-subtitle {
  font-weight: 300;
  font-size: 14px;
  color: var(--color-carbon-soft);
  letter-spacing: 0.02em;
}

/* Contenu principal */
.main-content {
  padding: 56px 32px 80px;
}

/* Bandeau d'introduction */
.hub-intro {
  margin-bottom: 56px;
  max-width: 760px;
}

.hub-intro h2 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 30px;
  line-height: 1.25;
  color: var(--color-carbon);
  margin-bottom: 12px;
  letter-spacing: -0.015em;
}

.hub-intro p {
  font-size: 15px;
  color: var(--color-carbon-soft);
  font-weight: 300;
}

/* Catégorie */
.category {
  margin-bottom: 56px;
}

.category-header {
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--color-violet);
}

.category-label {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-violet);
  margin-bottom: 8px;
}

.category-title {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 22px;
  color: var(--color-carbon);
  margin-bottom: 4px;
}

.category-description {
  font-size: 14px;
  color: var(--color-carbon-soft);
  font-weight: 300;
  max-width: 700px;
}

/* Grille de supports */
.supports-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

/* Carte support */
.support-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
  position: relative;
  overflow: hidden;
}

.support-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-violet), var(--color-violet-light));
  opacity: 0;
  transition: opacity 0.2s ease;
}

.support-card:hover {
  border-color: var(--color-violet-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.support-card:hover::before {
  opacity: 1;
}

.support-meta {
  display: flex;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-carbon-muted);
}

.support-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.support-meta-separator {
  color: var(--color-border-strong);
}

.support-title {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 18px;
  line-height: 1.35;
  color: var(--color-carbon);
  margin-bottom: 12px;
  letter-spacing: -0.005em;
}

.support-description {
  font-size: 14px;
  color: var(--color-carbon-soft);
  font-weight: 300;
  margin-bottom: 20px;
  flex-grow: 1;
}

.support-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 24px;
}

.support-tags li {
  font-size: 11px;
  font-weight: 600;
  background-color: var(--color-tag-bg);
  color: var(--color-tag-text);
  padding: 4px 10px;
  border-radius: 12px;
  letter-spacing: 0.02em;
}

.support-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  background-color: var(--color-violet);
  color: var(--color-white);
  text-decoration: none;
  font-weight: 600;
  font-size: 13px;
  padding: 10px 18px;
  border-radius: var(--radius);
  transition: background-color 0.15s ease, transform 0.15s ease;
  align-self: flex-start;
  letter-spacing: 0.02em;
}

.support-link:hover {
  background-color: var(--color-violet-dark);
}

.support-link::after {
  content: '→';
  font-weight: 400;
  transition: transform 0.15s ease;
}

.support-link:hover::after {
  transform: translateX(3px);
}

/* État vide / chargement */
.empty-state {
  background-color: var(--color-surface);
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  color: var(--color-carbon-muted);
  font-style: italic;
}

.loading-state {
  text-align: center;
  padding: 80px 32px;
  color: var(--color-carbon-muted);
  font-size: 14px;
}

/* Pied de page */
.site-footer {
  border-top: 1px solid var(--color-border);
  background-color: var(--color-white);
  padding: 24px 0;
  margin-top: 80px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 12px;
  color: var(--color-carbon-muted);
}

.footer-inner strong {
  color: var(--color-carbon-soft);
  font-weight: 600;
}

/* Responsive */
@media (max-width: 700px) {
  .container {
    padding: 0 20px;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .header-text {
    border-left: none;
    border-top: 1px solid var(--color-border);
    padding-left: 0;
    padding-top: 16px;
  }

  .site-logo {
    height: 44px;
  }

  .main-content {
    padding: 40px 20px 60px;
  }

  .hub-intro h2 {
    font-size: 24px;
  }

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