/* Thème unifié mode sombre pour Lingoo */
:root {
  --bg-gradient: linear-gradient(135deg, #050c23 0%, #081737 55%, #050c23 100%);
  --card-bg: #0c1427;
  --card-strong: #0f1c39;
  --card-muted: #112143;
  --surface-gradient: linear-gradient(135deg, #0f1c39 0%, #0a1430 100%);
  --text-primary: #e6ecff;
  --text-secondary: #c1c8e6;
  --text-tertiary: #97a0c2;
  --accent: #7aa2ff;
  --accent-strong: #5b82e6;
  --accent-soft: #0d1a3d;
  --success: #38d364;
  --warning: #fbbf24;
  --danger: #f87171;
  --border: #1f2b46;
  --shadow-strong: 0 20px 60px rgba(0, 0, 0, 0.45);
  --shadow-soft: 0 14px 30px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--bg-gradient);
  color: var(--text-primary);
  min-height: 100vh;
  transition: background 0.4s ease, color 0.2s ease;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
}

p, span, label {
  color: var(--text-secondary);
}

a {
  color: inherit;
}

.container {
  color: var(--text-primary);
}

/* Cartes et panneaux */
.header,
.card,
.player-container,
.search-card,
.resource-card,
.vocab-card,
.no-results,
.status-card,
.content-section,
.session-info,
.stats,
.stat-item,
.vocab-item,
.vocab-list .vocab-item,
.quiz-word,
.vocab-highlight-tooltip {
  background: var(--card-bg);
  color: var(--text-primary);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  transition: background 0.3s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.3s ease;
}

.header-title,
.language-title,
.title,
.section-title,
.resource-prompt,
.vocab-word,
.quiz-score,
.vocab-count,
.quiz-column-title,
.quiz-column-title,
.timer-display,
.stat-value {
  color: var(--text-primary);
}

.subtitle,
.resource-preview,
.resource-meta,
.resource-meta-left,
.vocab-translation,
.vocab-source,
.meta,
.meta-item,
.text-content,
.section-subtitle,
.stats .stat-label,
.stat-label,
.vocab-status,
.session-info,
.vocab-arrow {
  color: var(--text-secondary);
}

/* Actions et boutons */
.back-btn,
.toggle-btn,
.btn,
.btn-secondary,
.btn-danger,
.action-card,
.action-button,
.action-grid a,
.language-card,
.quiz-exit-btn,
.quiz-word,
.theme-toggle {
  border-radius: 10px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.back-btn,
.btn,
.toggle-btn,
.quiz-exit-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  box-shadow: var(--shadow-soft);
}

.back-btn:hover,
.btn:hover,
.toggle-btn:hover,
.quiz-exit-btn:hover {
  background: var(--accent-strong);
  transform: translateY(-1px);
}

.btn-secondary,
.btn-danger {
  box-shadow: var(--shadow-soft);
}

.btn-secondary {
  background: var(--card-muted);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--card-strong);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger:hover {
  filter: brightness(0.95);
}

.language-card,
.action-card {
  background: var(--surface-gradient);
  color: var(--text-primary);
  border: 2px solid transparent;
  box-shadow: var(--shadow-soft);
}

.language-card:hover,
.action-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-strong);
}

.language-name,
.action-label {
  color: var(--text-primary);
}

.niveau-badge,
.resource-niveau,
.pill {
  background: var(--accent);
  color: #fff;
  border: 1px solid transparent;
}

/* Champs de formulaire */
.search-input,
.filter-select,
input[type="text"],
input[type="number"],
select,
textarea {
  background: var(--card-bg);
  color: var(--text-primary);
  border: 2px solid var(--border);
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.search-input:focus,
.filter-select:focus,
input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
}

/* Listes et éléments */
.vocab-item,
.vocab-list .vocab-item,
.quiz-word,
.resource-card,
.search-card,
.stat-item {
  background: var(--card-strong);
}

.vocab-item {
  border-left: 4px solid var(--accent);
}

.quiz-word:hover {
  background: var(--card-muted);
  box-shadow: var(--shadow-soft);
}

.quiz-word.selected {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent-strong);
}

.quiz-word.correct {
  background: var(--success);
  color: #fff;
}

.quiz-word.error {
  background: var(--danger);
  color: #fff;
}

.quiz-word.matched {
  opacity: 0.35;
}

.resource-preview,
.no-results,
.vocab-status,
.stats {
  background: var(--card-strong);
}

.status-card {
  border-left: 4px solid var(--accent);
}

.status-card.status-error {
  border-color: var(--danger);
}

.status-card.status-success {
  border-color: var(--success);
}

.vocab-highlight {
  background: linear-gradient(180deg, transparent 60%, rgba(250, 204, 21, 0.35) 60%);
  color: #854d0e;
}

:root[data-theme="dark"] .vocab-highlight {
  background: linear-gradient(180deg, transparent 60%, rgba(250, 204, 21, 0.25) 60%);
  color: #fcd34d;
}

.audio-player {
  background: var(--card-bg);
}

/* Toggle global - SUPPRIMER */
.theme-toggle {
  display: none;
}