/**
 * Grouvel - Révisions Collège & Lycée (3ᵉ / 2ⁿᵈᵉ)
 * Feuille de style partagée par toutes les pages de la section
 * « Collège & Lycée ». Chaque page définit sa couleur d'accent via
 * la variable --rv-accent sur <body>.
 */

:root {
  color-scheme: light dark;
  --rv-accent: #2563eb;
  --rv-accent-soft: rgba(37, 99, 235, 0.12);
  --rv-bg: radial-gradient(circle at 30% 15%, #eef4fb 0%, #ffffff 70%);
  --rv-text: #2d3142;
  --rv-text-muted: #5a6172;
  --rv-heading: #1c3d5a;
  --rv-card: rgba(255, 255, 255, 0.94);
  --rv-card-solid: #ffffff;
  --rv-border: rgba(0, 0, 0, 0.09);
  --rv-shadow: 0 14px 38px rgba(28, 61, 90, 0.12);
  --rv-correct: #1c8a4a;
  --rv-correct-bg: rgba(28, 138, 74, 0.12);
  --rv-wrong: #d23b3b;
  --rv-wrong-bg: rgba(210, 59, 59, 0.12);
  --rv-info: #2563eb;
  --rv-example: #7b3fb5;
  --rv-method: #c77700;
  --rv-warn: #d23b3b;
}

@media (prefers-color-scheme: dark) {
  :root {
    --rv-accent-soft: rgba(96, 165, 250, 0.18);
    --rv-bg: radial-gradient(circle at 30% 15%, #141a2e 0%, #16213e 70%);
    --rv-text: #e8e8f0;
    --rv-text-muted: #a3acc2;
    --rv-heading: #eef2ff;
    --rv-card: rgba(30, 30, 50, 0.92);
    --rv-card-solid: #1e1e2e;
    --rv-border: rgba(255, 255, 255, 0.12);
    --rv-shadow: 0 14px 38px rgba(0, 0, 0, 0.5);
    --rv-correct: #4caf50;
    --rv-correct-bg: rgba(76, 175, 80, 0.16);
    --rv-wrong: #ef5350;
    --rv-wrong-bg: rgba(239, 83, 80, 0.16);
  }
}

* { box-sizing: border-box; }

body.rv-body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, sans-serif;
  background: var(--rv-bg);
  color: var(--rv-text);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  line-height: 1.6;
}

/* ===== En-tête ===== */
.rv-header {
  text-align: center;
  padding: 44px 16px 20px;
}
.rv-header h1 {
  font-size: 2.7rem;
  margin: 0 0 0.2em;
  color: var(--rv-heading);
  line-height: 1.15;
}
.rv-header h1 .accent { color: var(--rv-accent); }
.rv-header .rv-subtitle {
  margin: 0.6em auto 1.4em;
  max-width: 720px;
  color: var(--rv-text-muted);
  font-size: 1.05rem;
}
.rv-nav {
  display: flex;
  justify-content: center;
  gap: 0.8em;
  flex-wrap: wrap;
}
.rv-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.7em 1.4em;
  border-radius: 10px;
  background: linear-gradient(135deg, #007aff 0%, #0051d5 100%);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}
.rv-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0, 122, 255, 0.4); }
.rv-btn.ghost {
  background: var(--rv-card-solid);
  color: var(--rv-accent);
  border: 2px solid var(--rv-accent);
  box-shadow: none;
}
.rv-btn.ghost:hover { background: var(--rv-accent-soft); }

/* ===== Conteneur principal ===== */
.rv-main {
  flex: 1;
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 18px 64px;
}

/* ===== Sélecteur de niveau (3ᵉ / 2ⁿᵈᵉ) ===== */
.rv-levels {
  display: flex;
  justify-content: center;
  gap: 0.8em;
  margin: 0 auto 28px;
  flex-wrap: wrap;
}
.rv-level-btn {
  padding: 0.85em 1.8em;
  border: 2px solid var(--rv-accent);
  border-radius: 999px;
  background: var(--rv-card-solid);
  color: var(--rv-accent);
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  transition: all 0.2s ease;
}
.rv-level-btn:hover { background: var(--rv-accent-soft); }
.rv-level-btn.active {
  background: var(--rv-accent);
  color: #fff;
  box-shadow: 0 8px 20px var(--rv-accent-soft);
}
.rv-level-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.25em 0.7em;
  border-radius: 999px;
  background: var(--rv-accent-soft);
  color: var(--rv-accent);
  vertical-align: middle;
}

/* ===== Onglets internes ===== */
.rv-tabs {
  display: flex;
  justify-content: center;
  gap: 0.6em;
  flex-wrap: wrap;
  margin-bottom: 26px;
}
.rv-tab {
  padding: 0.7em 1.3em;
  border: 2px solid var(--rv-border);
  border-radius: 10px;
  background: var(--rv-card-solid);
  color: var(--rv-text);
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
  transition: all 0.2s ease;
}
.rv-tab:hover { border-color: var(--rv-accent); }
.rv-tab.active {
  background: var(--rv-accent);
  color: #fff;
  border-color: var(--rv-accent);
}

/* ===== Panneaux (niveaux + onglets) =====
   Les panneaux portent les classes .rv-level-panel et .rv-tab-panel ;
   on masque par défaut et on n'affiche que celui qui possède .active. */
.rv-panel,
.rv-level-panel,
.rv-tab-panel { display: none; }
.rv-panel.active,
.rv-level-panel.active,
.rv-tab-panel.active { display: block; animation: rvFade 0.35s ease; }
@keyframes rvFade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ===== Carte de section ===== */
.rv-card {
  background: var(--rv-card);
  border-radius: 20px;
  padding: 2.2em 2.4em;
  box-shadow: var(--rv-shadow);
  margin-bottom: 1.8em;
  border: 1px solid var(--rv-border);
}
.rv-card > h2 {
  margin-top: 0;
  font-size: 1.7rem;
  color: var(--rv-heading);
  border-bottom: 3px solid var(--rv-accent);
  padding-bottom: 0.45em;
}
.rv-card h3 {
  font-size: 1.25rem;
  color: var(--rv-heading);
  margin-top: 1.6em;
}
.rv-card h4 {
  font-size: 1.05rem;
  color: var(--rv-heading);
  margin: 1.2em 0 0.4em;
}
.rv-lead { font-size: 1.08rem; color: var(--rv-text-muted); }

/* ===== Programme officiel (liste à puces thématiques) ===== */
.rv-program {
  list-style: none;
  padding: 0;
  margin: 1em 0 0;
  display: grid;
  gap: 0.7em;
}
.rv-program li {
  background: var(--rv-card-solid);
  border: 1px solid var(--rv-border);
  border-left: 4px solid var(--rv-accent);
  border-radius: 10px;
  padding: 0.85em 1.1em;
}
.rv-program li strong { color: var(--rv-heading); }
.rv-program li small { color: var(--rv-text-muted); display: block; margin-top: 0.25em; }

/* ===== Encadrés (callouts) ===== */
.rv-note {
  border-radius: 12px;
  padding: 1em 1.2em 1em 1.3em;
  margin: 1.2em 0;
  border-left: 4px solid var(--rv-info);
  background: rgba(37, 99, 235, 0.07);
}
.rv-note > strong:first-child { display: block; margin-bottom: 0.3em; }
.rv-note.example { border-left-color: var(--rv-example); background: rgba(123, 63, 181, 0.08); }
.rv-note.method  { border-left-color: var(--rv-method);  background: rgba(199, 119, 0, 0.09); }
.rv-note.warn    { border-left-color: var(--rv-warn);    background: rgba(210, 59, 59, 0.08); }
.rv-note.def     { border-left-color: var(--rv-accent);  background: var(--rv-accent-soft); }

/* ===== Points clés ===== */
.rv-keypoints {
  margin: 1.1em 0;
  padding-left: 1.3em;
}
.rv-keypoints li { margin-bottom: 0.5em; }

/* ===== Tableaux ===== */
.rv-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 1.1em 0; }
table.rv-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.98rem;
}
table.rv-table thead th {
  background: var(--rv-accent);
  color: #fff;
  padding: 0.75em 0.9em;
  text-align: left;
  font-weight: 600;
}
table.rv-table tbody td, table.rv-table tbody th {
  padding: 0.65em 0.9em;
  border-bottom: 1px solid var(--rv-border);
  text-align: left;
  vertical-align: top;
}
table.rv-table tbody tr:nth-child(even) { background: rgba(0, 0, 0, 0.025); }
@media (prefers-color-scheme: dark) {
  table.rv-table tbody tr:nth-child(even) { background: rgba(255, 255, 255, 0.04); }
}

/* ===== Quiz QCM (moteur revisions.js) ===== */
.rv-quiz { margin: 1.2em 0; }
.rv-quiz .rvq-progress {
  display: flex;
  gap: 0.5em;
  justify-content: center;
  margin-bottom: 1em;
  flex-wrap: wrap;
}
.rv-quiz .rvq-dot {
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--rv-border);
}
.rv-quiz .rvq-dot.current { background: var(--rv-accent); box-shadow: 0 0 6px var(--rv-accent-soft); }
.rv-quiz .rvq-dot.ok { background: var(--rv-correct); }
.rv-quiz .rvq-dot.ko { background: var(--rv-wrong); }
.rv-quiz .rvq-card {
  background: var(--rv-card-solid);
  border: 2px solid var(--rv-border);
  border-radius: 14px;
  padding: 1.5em 1.6em;
}
.rv-quiz .rvq-question { font-size: 1.12rem; font-weight: 600; margin: 0 0 1em; }
.rv-quiz .rvq-options { display: grid; gap: 0.7em; }
@media (min-width: 620px) { .rv-quiz .rvq-options.cols2 { grid-template-columns: 1fr 1fr; } }
.rv-quiz .rvq-option {
  padding: 0.85em 1.1em;
  border: 2px solid var(--rv-border);
  border-radius: 10px;
  background: var(--rv-card-solid);
  color: var(--rv-text);
  cursor: pointer;
  font-size: 1rem;
  text-align: left;
  transition: all 0.18s ease;
}
.rv-quiz .rvq-option:hover:not(:disabled) { border-color: var(--rv-accent); background: var(--rv-accent-soft); }
.rv-quiz .rvq-option.correct { border-color: var(--rv-correct); background: var(--rv-correct-bg); color: var(--rv-correct); font-weight: 600; }
.rv-quiz .rvq-option.wrong { border-color: var(--rv-wrong); background: var(--rv-wrong-bg); color: var(--rv-wrong); }
.rv-quiz .rvq-option:disabled { cursor: default; }
.rv-quiz .rvq-explain {
  margin-top: 1em;
  padding: 0.9em 1.1em;
  border-radius: 10px;
  background: var(--rv-accent-soft);
  font-size: 0.97rem;
  border-left: 4px solid var(--rv-accent);
}
.rv-quiz .rvq-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 1.2em; gap: 1em; flex-wrap: wrap; }
.rv-quiz .rvq-count { color: var(--rv-text-muted); font-size: 0.9rem; }
.rv-quiz .rvq-result { text-align: center; padding: 1.5em; }
.rv-quiz .rvq-result .rvq-emoji { font-size: 3rem; display: block; margin-bottom: 0.3em; }
.rv-quiz .rvq-result .rvq-score { font-size: 1.5rem; font-weight: 700; }

/* ===== Exercices à compléter (moteur revisions.js) ===== */
.rv-fill { margin: 1.2em 0; display: grid; gap: 0.8em; }
.rv-fill .rvf-item {
  background: var(--rv-card-solid);
  border: 2px solid var(--rv-border);
  border-radius: 12px;
  padding: 1.1em 1.3em;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8em;
}
.rv-fill .rvf-q { flex: 1; min-width: 180px; font-weight: 500; }
.rv-fill .rvf-input {
  width: 150px;
  padding: 0.6em 0.7em;
  border: 2px solid var(--rv-border);
  border-radius: 8px;
  text-align: center;
  font-size: 16px;
  font-weight: 600;
  background: var(--rv-card-solid);
  color: var(--rv-text);
}
.rv-fill .rvf-input:focus { outline: none; border-color: var(--rv-accent); box-shadow: 0 0 0 3px var(--rv-accent-soft); }
.rv-fill .rvf-input.correct { border-color: var(--rv-correct); background: var(--rv-correct-bg); }
.rv-fill .rvf-input.wrong { border-color: var(--rv-wrong); background: var(--rv-wrong-bg); }
.rv-fill .rvf-feedback { font-weight: 600; min-width: 28px; font-size: 1.1rem; }
.rv-fill .rvf-hint { flex-basis: 100%; font-size: 0.88rem; color: var(--rv-text-muted); display: none; }
.rv-fill .rvf-hint.show { display: block; }

/* ===== Boutons d'action ===== */
.rv-action {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.75em 1.5em;
  border-radius: 10px;
  border: none;
  background: var(--rv-accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.rv-action:hover { transform: translateY(-2px); box-shadow: 0 6px 16px var(--rv-accent-soft); }
.rv-action.secondary { background: var(--rv-card-solid); color: var(--rv-accent); border: 2px solid var(--rv-accent); }
.rv-action.secondary:hover { background: var(--rv-accent-soft); }
.rv-actions-row { display: flex; gap: 0.7em; flex-wrap: wrap; align-items: center; margin-top: 1em; }

/* ===== Panneau interactif ===== */
.rv-interactive {
  display: flex;
  gap: 1.8em;
  align-items: flex-start;
  flex-wrap: wrap;
  margin: 1.2em 0;
}
.rv-interactive .rvi-viz {
  flex: 1 1 320px;
  min-width: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.rv-interactive .rvi-controls { flex: 1 1 280px; min-width: 240px; }
.rv-interactive canvas, .rv-interactive svg.rvi-svg {
  width: 100%;
  max-width: 420px;
  height: auto;
  background: var(--rv-card-solid);
  border: 1px solid var(--rv-border);
  border-radius: 12px;
}
.rvi-field { margin-bottom: 1.1em; }
.rvi-field label { display: block; font-weight: 600; margin-bottom: 0.35em; }
.rvi-field input[type="range"] { width: 100%; accent-color: var(--rv-accent); }
.rvi-field input[type="number"], .rvi-field select {
  width: 100%;
  padding: 0.55em 0.7em;
  border: 2px solid var(--rv-border);
  border-radius: 8px;
  font-size: 16px;
  background: var(--rv-card-solid);
  color: var(--rv-text);
}
.rvi-readout {
  font-family: "Courier New", monospace;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--rv-accent);
}
.rvi-result-box {
  background: var(--rv-accent-soft);
  border-radius: 12px;
  padding: 1em 1.2em;
  margin-top: 0.8em;
}
.rvi-btnrow { display: flex; gap: 0.5em; flex-wrap: wrap; margin-bottom: 1em; }
.rvi-btn {
  padding: 0.55em 1em;
  border: 2px solid var(--rv-accent);
  border-radius: 8px;
  background: var(--rv-card-solid);
  color: var(--rv-accent);
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  transition: all 0.18s ease;
}
.rvi-btn:hover { background: var(--rv-accent-soft); }
.rvi-btn.primary { background: var(--rv-accent); color: #fff; }

/* ===== Exemple résolu (worked example) ===== */
.rv-example {
  border: 1px solid var(--rv-border);
  border-left: 4px solid var(--rv-method);
  border-radius: 12px;
  padding: 1em 1.2em;
  margin: 1.2em 0;
  background: rgba(199, 119, 0, 0.06);
}
.rv-example > .rv-example-title {
  display: block;
  font-weight: 700;
  color: var(--rv-heading);
  margin-bottom: 0.5em;
}
.rv-example .rv-calc {
  font-family: "Courier New", monospace;
  font-size: 1.05rem;
  background: var(--rv-card-solid);
  border: 1px solid var(--rv-border);
  border-radius: 8px;
  padding: 0.6em 0.9em;
  margin: 0.5em 0;
  overflow-x: auto;
  white-space: pre;
}

/* ===== Étapes de méthode numérotées ===== */
.rv-steps { counter-reset: rvstep; list-style: none; padding: 0; margin: 1.1em 0; display: grid; gap: 0.6em; }
.rv-steps li {
  position: relative;
  padding: 0.7em 1em 0.7em 3em;
  background: var(--rv-card-solid);
  border: 1px solid var(--rv-border);
  border-radius: 10px;
}
.rv-steps li::before {
  counter-increment: rvstep;
  content: counter(rvstep);
  position: absolute;
  left: 0.7em; top: 50%;
  transform: translateY(-50%);
  width: 1.7em; height: 1.7em;
  display: flex; align-items: center; justify-content: center;
  background: var(--rv-accent); color: #fff;
  border-radius: 50%; font-weight: 700; font-size: 0.9rem;
}

/* ===== Carte vocabulaire / définitions trilingue ===== */
.rv-vocab {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
  font-size: 0.97rem;
}
.rv-vocab th, .rv-vocab td {
  border: 1px solid var(--rv-border);
  padding: 0.55em 0.8em;
  text-align: left;
}
.rv-vocab thead th { background: var(--rv-accent); color: #fff; }

/* ===== Mini-galerie de figures / pictos ===== */
.rv-figrow { display: flex; flex-wrap: wrap; gap: 1em; margin: 1em 0; justify-content: center; }
.rv-fig {
  flex: 0 1 150px;
  text-align: center;
  background: var(--rv-card-solid);
  border: 1px solid var(--rv-border);
  border-radius: 12px;
  padding: 0.9em;
}
.rv-fig svg { width: 100%; height: auto; max-height: 110px; }
.rv-fig .rv-fig-label { display: block; margin-top: 0.4em; font-weight: 600; font-size: 0.9rem; }

/* ===== Grille du hub (page index de la section) ===== */
.rv-hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.4em;
  margin-top: 1.5em;
}
.rv-subject-card {
  position: relative;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  background: var(--rv-card);
  border: 1px solid var(--rv-border);
  border-radius: 18px;
  padding: 1.6em 1.6em 1.7em;
  box-shadow: var(--rv-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border-top: 5px solid var(--sub-color, var(--rv-accent));
  color: var(--rv-text);
}
.rv-subject-card:hover { transform: translateY(-4px); box-shadow: 0 18px 44px rgba(28, 61, 90, 0.2); }
.rv-subject-card .sub-icon { font-size: 2.6rem; margin-bottom: 0.2em; }
.rv-subject-card .sub-title { font-size: 1.3rem; font-weight: 700; color: var(--rv-heading); margin: 0 0 0.3em; }
.rv-subject-card .sub-desc { font-size: 0.95rem; color: var(--rv-text-muted); margin: 0; flex: 1; }
.rv-subject-card .sub-levels {
  margin-top: 0.9em;
  display: flex;
  gap: 0.4em;
  flex-wrap: wrap;
}
.rv-subject-card .sub-chip {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.25em 0.7em;
  border-radius: 999px;
  background: var(--sub-color, var(--rv-accent));
  color: #fff;
  opacity: 0.92;
}
/* Carte de matière « à venir » (non cliquable) */
.rv-subject-card.soon {
  cursor: default;
  opacity: 0.72;
  filter: grayscale(0.3);
}
.rv-subject-card.soon:hover { transform: none; box-shadow: var(--rv-shadow); }
.rv-subject-card .sub-soon {
  position: absolute;
  top: 0.9em; right: 0.9em;
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.25em 0.6em;
  border-radius: 999px;
  background: var(--rv-text-muted);
  color: #fff;
}

/* ===== Pied de page ===== */
.rv-footer {
  text-align: center;
  padding: 1.5em;
  color: var(--rv-text-muted);
  font-size: 0.85rem;
}

/* ===== Sommaire ancré ===== */
.rv-toc {
  display: flex;
  gap: 0.5em;
  flex-wrap: wrap;
  margin: 0 0 1.4em;
}
.rv-toc a {
  font-size: 0.88rem;
  text-decoration: none;
  color: var(--rv-accent);
  border: 1px solid var(--rv-border);
  border-radius: 999px;
  padding: 0.35em 0.9em;
  background: var(--rv-card-solid);
}
.rv-toc a:hover { background: var(--rv-accent-soft); }

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .rv-header { padding: 30px 12px 14px; }
  .rv-header h1 { font-size: 1.95rem; }
  .rv-header .rv-subtitle { font-size: 0.95rem; }
  .rv-card { padding: 1.4em 1.3em; border-radius: 16px; }
  .rv-card > h2 { font-size: 1.4rem; }
  .rv-level-btn { padding: 0.7em 1.3em; font-size: 0.98rem; }
  .rv-quiz .rvq-options.cols2 { grid-template-columns: 1fr; }
  .rv-fill .rvf-item { flex-direction: column; align-items: stretch; }
  .rv-fill .rvf-input { width: 100%; }
  .rv-interactive { flex-direction: column; }
  table.rv-table { font-size: 0.88rem; }
  table.rv-table td, table.rv-table th { padding: 0.55em 0.5em; }
}

/* ===== Impression ===== */
@media print {
  .rv-nav, .rv-levels, .rv-tabs, .rv-toc, .rv-action, .rv-actions-row,
  .rv-quiz .rvq-footer, .rv-interactive .rvi-controls { display: none !important; }
  body.rv-body { background: #fff; color: #000; }
  .rv-panel { display: block !important; }
  .rv-card { box-shadow: none; border: 1px solid #000; break-inside: avoid; background: #fff; }
  table.rv-table thead th { background: #ddd; color: #000; }
}
