/* ==========================================================================
   hub.css — Style Apple Liquid Glass & Dynamic Island (Îlot Liquide)
   Inspiré du design system iOS 18 / macOS Sequoia avec verre translucide,
   flou gaussien, reflets spéculaires et animations à ressort.
   ========================================================================== */

:root {
  --font-apple: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, Helvetica, sans-serif;
  --font-mono: "SF Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;

  /* Couleurs de fond et verre sombre */
  --hub-bg: #0b0e14;
  --hub-bg-gradient: radial-gradient(at 15% 15%, rgba(47, 134, 255, 0.12) 0px, transparent 55%),
                     radial-gradient(at 85% 85%, rgba(168, 85, 247, 0.10) 0px, transparent 55%),
                     radial-gradient(at 50% 50%, rgba(20, 26, 38, 0.6) 0px, transparent 100%),
                     #0b0e14;

  --glass-surface: rgba(18, 24, 38, 0.68);
  --glass-surface-hover: rgba(28, 36, 54, 0.78);
  --glass-surface-active: rgba(45, 60, 90, 0.82);
  --glass-border: rgba(255, 255, 255, 0.14);
  --glass-border-specular: rgba(255, 255, 255, 0.32);
  --glass-border-glow: rgba(77, 163, 255, 0.45);

  --hub-ink: #f1f5f9;
  --hub-ink-muted: #94a3b8;
  --hub-ink-dim: #64748b;

  --accent-cyan: #38bdf8;
  --accent-purple: #c084fc;
  --accent-amber: #fbbf24;
  --accent-green: #4ade80;
  --accent-rose: #fb7185;

  --island-radius: 9999px;
  --spring: cubic-bezier(0.16, 1, 0.3, 1);
  --spring-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

:root[data-theme="light"] {
  --hub-bg: #f8fafc;
  --hub-bg-gradient: radial-gradient(at 15% 15%, rgba(59, 130, 246, 0.08) 0px, transparent 55%),
                     radial-gradient(at 85% 85%, rgba(168, 85, 247, 0.06) 0px, transparent 55%),
                     #f8fafc;
  --glass-surface: rgba(255, 255, 255, 0.72);
  --glass-surface-hover: rgba(255, 255, 255, 0.88);
  --glass-surface-active: rgba(240, 246, 255, 0.95);
  --glass-border: rgba(0, 0, 0, 0.08);
  --glass-border-specular: rgba(255, 255, 255, 0.9);
  --hub-ink: #0f172a;
  --hub-ink-muted: #475569;
  --hub-ink-dim: #94a3b8;
}

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

html { min-height: -webkit-fill-available; }
html, body {
  height: 100%;
  overflow: hidden;            /* l'appli occupe exactement l'écran : seuls les contenus (iframes, QCM) défilent */
  overscroll-behavior: none;
}

body {
  font-family: var(--font-apple);
  background: var(--hub-bg-gradient);
  background-attachment: fixed;
  color: var(--hub-ink);
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}

/* ==========================================================================
   ÎLOT DYNAMIQUE APPLE (DYNAMIC ISLAND GLASS DOCK)
   ========================================================================== */
.island-wrapper {
  position: fixed;
  top: 14px;
  left: 0;
  right: 0;
  z-index: 9999;
  display: flex;
  justify-content: center;
  pointer-events: none;
  padding: 0 16px;
}

.dynamic-island {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--glass-surface);
  backdrop-filter: blur(32px) saturate(200%);
  -webkit-backdrop-filter: blur(32px) saturate(200%);
  border: 1px solid var(--glass-border);
  box-shadow: 0 18px 45px -8px rgba(0, 0, 0, 0.45),
              inset 0 1px 0 0 var(--glass-border-specular),
              0 0 0 1px rgba(0, 0, 0, 0.25);
  border-radius: var(--island-radius);
  padding: 6px 10px;
  transition: all 0.38s var(--spring);
  max-width: 96vw;
}

.dynamic-island:hover {
  border-color: rgba(255, 255, 255, 0.24);
  box-shadow: 0 24px 50px -6px rgba(0, 0, 0, 0.55),
              inset 0 1px 0 0 var(--glass-border-specular);
}

/* Logo Badge de l'îlot */
.island-brand {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 6px 14px 6px 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--island-radius);
  cursor: pointer;
  transition: all 0.25s var(--spring);
}

.island-brand:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: scale(1.02);
}

.island-brand-logo {
  width: 24px;
  height: 24px;
  border-radius: 7px;
  display: block;
  box-shadow: 0 2px 8px rgba(56, 189, 248, 0.35);
}

.island-brand-icon {
  font-size: 17px;
  filter: drop-shadow(0 2px 6px rgba(56, 189, 248, 0.4));
}

.island-brand-text {
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: -0.3px;
  background: linear-gradient(135deg, #ffffff 30%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Barre de navigation des onglets */
.island-nav {
  display: flex;
  align-items: center;
  gap: 5px;
}

/* Boutons Liquid Glass (Capsules tactiles) */
.glass-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--island-radius);
  background: transparent;
  border: 1px solid transparent;
  color: var(--hub-ink-muted);
  font-family: var(--font-apple);
  font-size: 13px;
  font-weight: 550;
  cursor: pointer;
  transition: all 0.28s var(--spring);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}

.glass-btn:hover {
  color: var(--hub-ink);
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-1px);
}

.glass-btn:active {
  transform: scale(0.95);
  background: rgba(255, 255, 255, 0.12);
}

/* Onglet actif avec luminescence liquide */
.glass-btn.active {
  color: #ffffff;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.28), rgba(168, 85, 247, 0.22));
  border-color: var(--glass-border-glow);
  box-shadow: 0 4px 18px rgba(56, 189, 248, 0.25),
              inset 0 1px 0 0 rgba(255, 255, 255, 0.4);
}

.glass-btn.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 25%;
  right: 25%;
  height: 2px;
  background: linear-gradient(90deg, transparent, #38bdf8, transparent);
  border-radius: 9999px;
}

/* Capsule de Statut en direct (Live Widget de l'îlot) */
.island-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--island-radius);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s var(--spring);
}

.island-status:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.22);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 8px #22c55e;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.status-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.status-cash { color: #4ade80; }
.status-inc { color: #fbbf24; }
.status-compris { color: #38bdf8; }

/* Boutons Utilitaires (Thème, Plein écran) */
.island-tools {
  display: flex;
  align-items: center;
  gap: 4px;
}

.glass-icon-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--hub-ink-muted);
  cursor: pointer;
  transition: all 0.22s var(--spring);
  font-size: 14px;
}

.glass-icon-btn:hover {
  color: var(--hub-ink);
  background: rgba(255, 255, 255, 0.14);
  transform: scale(1.06);
}

/* ==========================================================================
   TIROIR DÉROULANT DE L'ÎLOT (EXPANDED CONTROL CENTER)
   ========================================================================== */
.island-drawer {
  position: fixed;
  top: 72px;
  left: 50%;
  transform: translateX(-50%) translateY(-10px) scale(0.96);
  width: 480px;
  max-width: 92vw;
  background: var(--glass-surface);
  backdrop-filter: blur(40px) saturate(200%);
  -webkit-backdrop-filter: blur(40px) saturate(200%);
  border: 1px solid var(--glass-border);
  box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.6),
              inset 0 1px 0 0 var(--glass-border-specular);
  border-radius: 26px;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: all 0.32s var(--spring);
  z-index: 9998;
}

.island-drawer.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0) scale(1);
}

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.drawer-title {
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.drawer-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

.drawer-stat-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 14px;
  padding: 12px;
  text-align: center;
}

.drawer-stat-card small {
  display: block;
  font-size: 11px;
  color: var(--hub-ink-dim);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.drawer-stat-card b {
  font-size: 16px;
  font-weight: 700;
}

/* ==========================================================================
   CONTENEUR DES VUES (APP VIEWS)
   ========================================================================== */
/* Zone des vues : positionnée en fixe entre la barre et le bord de l'écran.
   (Pas de 100vh : sur iPhone il inclut la zone cachée par la barre du navigateur.) */
.views-container {
  position: fixed;
  left: 0;
  right: 0;
  top: 80px;
  bottom: 0;
}

.app-view {
  display: none;
  height: 100%;
}

.app-view.active {
  display: block;
  animation: fadeInView 0.35s ease;
}

@keyframes fadeInView {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Iframes : cours, UML, exercices, aventure 2D */
.full-frame {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

/* QCM Express : la vue défile toute seule */
#view-quiz.active {
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

/* ==========================================================================
   STYLE DU MODULE QCM EXPRESS (ENTRAÎNEMENT APPLE GLASS)
   ========================================================================== */
.quiz-container {
  max-width: 820px;
  margin: 30px auto;
  padding: 0 20px 60px;
}

.quiz-glass-card {
  background: var(--glass-surface);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 20px 45px rgba(0,0,0,0.3), inset 0 1px 0 var(--glass-border-specular);
  border-radius: 24px;
  padding: 30px;
}

.quiz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.quiz-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(56, 189, 248, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: var(--accent-cyan);
  font-size: 13px;
  font-weight: 700;
  border-radius: 9999px;
}

.quiz-question {
  font-size: 20px;
  font-weight: 650;
  line-height: 1.45;
  margin-bottom: 24px;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.quiz-opt-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  color: var(--hub-ink);
  font-family: var(--font-apple);
  font-size: 15px;
  text-align: left;
  cursor: pointer;
  transition: all 0.22s var(--spring);
}

.quiz-opt-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateX(4px);
}

.quiz-opt-btn.correct {
  background: rgba(34, 197, 94, 0.2) !important;
  border-color: #22c55e !important;
  color: #4ade80 !important;
  box-shadow: 0 0 20px rgba(34, 197, 94, 0.3);
}

.quiz-opt-btn.wrong {
  background: rgba(239, 68, 68, 0.2) !important;
  border-color: #ef4444 !important;
  color: #f87171 !important;
}

.quiz-question code, .quiz-opt-btn code, .quiz-feedback code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: rgba(255, 255, 255, 0.1);
  padding: 1px 6px;
  border-radius: 6px;
}

.quiz-feedback {
  padding: 16px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  font-size: 14px;
  line-height: 1.5;
  margin-top: 16px;
  display: none;
}

.quiz-feedback.show {
  display: block;
}

/* ==========================================================================
   MOBILE (écran étroit ou téléphone en paysage) : pas de barre de navigation.
   L'appli occupe tout l'écran ; un petit bouton flottant ouvre le menu de
   navigation, sauf dans l'aventure qui a son propre menu.
   ========================================================================== */
.fab-nav, .mnav-wrap { display: none; }

@media (max-width: 900px), (max-height: 500px) {
  .island-wrapper, .island-drawer { display: none !important; }

  /* toute la hauteur possible (100lvh) : plus de bande noire sous le contenu quand la barre du navigateur change */
  .views-container { top: 0; bottom: auto; height: 100vh; height: 100lvh; }

  #view-quiz.active { padding-bottom: var(--dock-space, 80px); }

  .fab-nav {
    position: fixed;
    right: 14px;
    bottom: calc(env(safe-area-inset-bottom, 0px) * 0.6 + 14px);
    z-index: 9990;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass-surface);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--glass-border);
    box-shadow: 0 10px 28px -6px rgba(0, 0, 0, 0.5), inset 0 1px 0 0 var(--glass-border-specular);
    color: var(--hub-ink);
    cursor: pointer;
  }
  .fab-nav svg { width: 24px; height: 24px; }
  body[data-tab="jeu2d"] .fab-nav { display: none; }   /* l'aventure a son propre menu */

  .mnav-wrap {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(5, 8, 16, 0.55);
    align-items: flex-end;
    justify-content: center;
  }
  .mnav-wrap.open { display: flex; }
  .mnav {
    width: min(520px, 100%);
    max-height: 88vh;
    overflow-y: auto;
    background: var(--hub-bg);
    border: 1px solid var(--glass-border);
    border-bottom: 0;
    border-radius: 26px 26px 0 0;
    padding: 16px 16px calc(16px + env(safe-area-inset-bottom, 0px));
    box-shadow: 0 -20px 50px rgba(0, 0, 0, 0.5);
    animation: mnavUp 0.28s var(--spring);
  }
  @keyframes mnavUp { from { transform: translateY(40px); opacity: 0; } }
  .mnav-head {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
  }
  .mnav-head img { width: 30px; height: 30px; border-radius: 9px; }
  .mnav-head b { font-size: 16px; }
  .mnav-head small { flex: 1; color: var(--hub-ink-dim); font-weight: 600; font-size: 13px; }
  .mnav-item {
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    padding: 12px 14px;
    margin-bottom: 8px;
    border-radius: 18px;
    background: var(--glass-surface);
    border: 1px solid var(--glass-border);
    color: var(--hub-ink);
    font-family: var(--font-apple);
    text-align: left;
    cursor: pointer;
  }
  .mnav-item.active { border-color: var(--glass-border-glow); background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(168, 85, 247, 0.16)); }
  .mnav-item > span { font-size: 24px; width: 30px; text-align: center; }
  .mnav-item b { display: block; font-size: 15px; }
  .mnav-item small { color: var(--hub-ink-muted); font-size: 12.5px; }

  .quiz-container { margin: 16px auto; padding: 0 12px 24px; }
  .quiz-glass-card { padding: 18px; }
  .quiz-question { font-size: 17px; }
  .quiz-opt-btn { padding: 13px 14px; }
}

/* écrans tactiles : pas de survol « collant » après un appui */
@media (hover: none) {
  .glass-btn:hover, .glass-icon-btn:hover, .island-brand:hover, .island-status:hover { transform: none; }
}