:root {
  --bg-dark: #06070c;
  --card-bg: rgba(255,255,255,0.04);
  --card-border: rgba(255,255,255,0.09);
  --accent: #6c8cff;
  --accent-2: #9b6cff;
  --accent-teal: #2dd4bf;
  --text-main: #f2f4fa;
  --text-muted: #8890a6;
  --radius-lg: 20px;
  --radius-md: 14px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Segoe UI', system-ui, sans-serif;
  background:
    radial-gradient(circle at 8% 0%, rgba(76,102,255,0.20) 0%, transparent 40%),
    radial-gradient(circle at 100% 100%, rgba(155,108,255,0.16) 0%, transparent 45%),
    var(--bg-dark);
  background-attachment: fixed;
  color: var(--text-main);
  min-height: 100vh;
}
.container { max-width: 1040px; margin: 0 auto; padding: 24px 16px 80px; }

/* Barre du haut (façon carte) */
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius-lg); padding: 22px 30px;
  backdrop-filter: blur(16px); margin-bottom: 28px;
  flex-wrap: wrap; gap: 16px;
}
.topbar-title h1 { margin: 0; font-size: 1.7rem; }
.topbar-title p { margin: 4px 0 0; color: var(--text-muted); font-size: .85rem; }
.topbar-right { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.pill-stat {
  background: rgba(255,255,255,0.04); border: 1px solid var(--card-border);
  border-radius: 999px; padding: 8px 18px; font-size: .78rem; color: var(--text-muted); text-align: right;
}
.pill-stat strong { color: var(--text-main); display: block; font-size: 1.05rem; line-height: 1.3; }

.btn-light, .btn-outline {
  border-radius: 12px; padding: 12px 18px; font-weight: 600; font-size: .9rem;
  text-decoration: none; display: inline-flex; align-items: center; gap: 8px;
  cursor: pointer; border: none; white-space: nowrap;
}
.btn-light { background: #f2f4fa; color: #0b0e14; }
.btn-light:hover { background: #ffffff; }
.btn-outline { background: rgba(255,255,255,0.05); border: 1px solid var(--card-border); color: var(--text-main); }
.btn-outline:hover { border-color: var(--accent); }

/* Grille de cartes (matières / dossiers) */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px,1fr)); gap: 16px; }
.item-card {
  display: flex; flex-direction: column; gap: 14px; padding: 22px;
  background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius-lg);
  backdrop-filter: blur(14px); text-decoration: none; color: var(--text-main);
  transition: transform .2s, border-color .2s;
}
.item-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.item-icon {
  width: 46px; height: 46px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; background: linear-gradient(135deg, rgba(255,193,71,.22), rgba(255,193,71,.08));
}
.item-card h2, .item-card h3 { margin: 0; font-size: 1.05rem; }
.badge-dot {
  display: inline-flex; align-items: center; gap: 6px; width: fit-content;
  background: rgba(255,255,255,0.05); border: 1px solid var(--card-border);
  padding: 4px 10px; border-radius: 999px; font-size: .75rem; color: var(--text-muted);
}
.badge-dot .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }

/* Recherche */
.search-bar {
  display: flex; max-width: 480px; margin: 0 0 24px;
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: 999px; backdrop-filter: blur(12px); overflow: hidden;
}
.search-bar input { flex: 1; background: transparent; border: none; padding: 14px 18px; color: var(--text-main); font-size: 1rem; outline: none; }
.search-bar button { background: none; border: none; color: var(--text-main); padding: 0 18px; cursor: pointer; font-size: 1.1rem; }
.resultats-count { color: var(--text-muted); margin: 0 0 16px; }
.liste-resultats { display: flex; flex-direction: column; gap: 12px; }
.card-resultat { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius-lg); padding: 16px 20px; text-decoration: none; color: var(--text-main); }
.card-resultat h3 { margin: 4px 0 0; }

.retour { color: var(--text-muted); text-decoration: none; display: inline-block; margin-bottom: 16px; }
.retour:hover { color: var(--accent); }

/* Liste des chapitres d'une matière */
.liste-chapitres { display: flex; flex-direction: column; gap: 18px; }
.chapitre-bloc { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius-lg); padding: 20px; backdrop-filter: blur(14px); }
.chapitre-bloc h3 { margin-top: 0; }
.chapitre-bloc ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.chapitre-bloc a { color: var(--text-main); text-decoration: none; padding: 10px 14px; border-radius: 10px; display: block; background: rgba(255,255,255,0.03); transition: background .2s; }
.chapitre-bloc a:hover { background: rgba(108,140,255,0.15); }

/* Fiche */
.fiche-container { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius-lg); padding: 32px; backdrop-filter: blur(14px); }
.fiche-tag { display: inline-block; background: rgba(108,140,255,0.15); color: var(--accent); padding: 4px 12px; border-radius: 999px; font-size: .8rem; margin-bottom: 12px; }
.fiche-image { max-width: 220px; border-radius: var(--radius-md); border: 1px solid var(--card-border); display: block; margin-bottom: 16px; }
.fiche-contenu h2 { color: var(--accent); border-bottom: 1px solid var(--card-border); padding-bottom: 6px; }
.fiche-contenu table { width: 100%; border-collapse: collapse; margin: 16px 0; }
.fiche-contenu th, .fiche-contenu td { border: 1px solid var(--card-border); padding: 8px 12px; text-align: left; }

/* Formulaires */
.form-container { max-width: 520px; margin: 0 auto; background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius-lg); padding: 32px; backdrop-filter: blur(14px); }
.form-container label { display: block; margin: 16px 0 6px; color: var(--text-muted); font-size: .9rem; }
.form-container input, .form-container select, .form-container textarea {
  width: 100%; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--card-border);
  background: rgba(255,255,255,0.03); color: var(--text-main); font-size: 1rem;
}
.btn-principal { margin-top: 24px; width: 100%; padding: 14px; background: linear-gradient(90deg, var(--accent), var(--accent-2)); border: none; border-radius: 10px; color: #fff; font-weight: 600; font-size: 1rem; cursor: pointer; }
.success-msg { color: #7CFC9C; }
.empty-state { color: var(--text-muted); text-align: center; padding: 40px 0; }
.site-footer { text-align: center; color: var(--text-muted); padding: 24px 0; font-size: .85rem; }

/* Admin */
.admin-nav { display: flex; gap: 8px; margin-bottom: 24px; flex-wrap: wrap; }
.admin-nav a { color: var(--text-muted); text-decoration: none; padding: 9px 16px; border-radius: 10px; font-size: .9rem; }
.admin-nav a.active, .admin-nav a:hover { color: #fff; background: rgba(108,140,255,0.15); }
.admin-table { width: 100%; border-collapse: collapse; background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius-lg); overflow: hidden; }
.admin-table th, .admin-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--card-border); }
.badge-brouillon { background: rgba(255,180,80,.2); color: #ffb450; padding: 2px 10px; border-radius: 999px; font-size: .75rem; }
.badge-publie { background: rgba(124,252,156,.2); color: #7cfc9c; padding: 2px 10px; border-radius: 999px; font-size: .75rem; }

/* Zone de dépôt (upload) — glow façon "déposez vos PDF ici" */
.upload-zone {
  border: 2px dashed rgba(45,212,191,0.45);
  border-radius: var(--radius-lg);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  background: radial-gradient(circle at 50% 30%, rgba(45,212,191,0.14), transparent 70%);
  transition: border-color .2s, background .2s;
}
.upload-zone:hover { border-color: rgba(45,212,191,0.75); }
.upload-zone strong { display: block; font-size: 1.15rem; margin-bottom: 6px; }
.upload-zone span { color: var(--text-muted); font-size: .85rem; }

.editable-fiche { background: rgba(255,255,255,0.03); border: 1px solid var(--card-border); border-radius: var(--radius-lg); padding: 20px; min-height: 300px; color: var(--text-main); }
.btn-secondaire { background: rgba(255,255,255,0.05); border: 1px solid var(--card-border); color: var(--text-main); padding: 10px 18px; border-radius: 10px; cursor: pointer; }