/* ═══════════════════════════════════════════════════════════
   Maths avec M. Caloy — feuille de style
   (rien à modifier ici pour mettre à jour le contenu : voir config.js)
   ═══════════════════════════════════════════════════════════ */

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

:root {
    --bg: #0b1020;
    --card: #151b2e;
    --card-2: #1b2340;
    --border: rgba(255, 255, 255, 0.08);
    --text: #e6eaf5;
    --text-dim: #9aa5c4;
    --violet: #8b5cf6;
    --cyan: #22d3ee;
    --yellow: #facc15;
    --pink: #fb7185;
    --green: #34d399;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg);
    background-image:
        radial-gradient(600px 300px at 15% -5%, rgba(139, 92, 246, 0.25), transparent 70%),
        radial-gradient(600px 300px at 85% 0%, rgba(34, 211, 238, 0.18), transparent 70%);
    background-repeat: no-repeat;
    color: var(--text);
    min-height: 100vh;
    padding-bottom: 60px;
}

.wrap {
    max-width: 980px;
    margin: 0 auto;
    padding: 20px;
}

/* ===== HERO ===== */
.hero { padding: 18px 0 6px; }

.hero-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    flex-wrap: wrap;
}

.hero h1 {
    font-size: clamp(1.6em, 5vw, 2.4em);
    font-weight: 800;
    letter-spacing: -0.5px;
}

.hero h1 .grad {
    background: linear-gradient(90deg, var(--violet), var(--cyan));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero p.sub {
    color: var(--text-dim);
    margin-top: 6px;
    font-size: 1.05em;
}

/* Sélecteur de classe */
.class-picker {
    display: flex;
    gap: 6px;
    background: var(--card);
    border: 1px solid var(--border);
    padding: 6px;
    border-radius: 999px;
    flex-wrap: wrap;
}

.class-picker button {
    border: none;
    background: transparent;
    color: var(--text-dim);
    font-weight: 700;
    font-size: 0.95em;
    padding: 9px 16px;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.25s;
    white-space: nowrap;
}

.class-picker button.active {
    background: linear-gradient(90deg, var(--violet), var(--cyan));
    color: #0b1020;
}

/* Barre XP */
.xp-panel {
    margin-top: 14px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 12px 18px;
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
}

.xp-level {
    font-weight: 800;
    font-size: 1.1em;
    white-space: nowrap;
}

.xp-bar {
    flex: 1;
    min-width: 160px;
    height: 12px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 999px;
    overflow: hidden;
}

.xp-bar-fill {
    height: 100%;
    width: 0%;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--violet), var(--cyan));
    transition: width 0.6s ease;
}

.xp-count {
    color: var(--text-dim);
    font-weight: 600;
    white-space: nowrap;
}

.streak {
    font-weight: 800;
    color: var(--yellow);
    white-space: nowrap;
}

@keyframes floatUp {
    0% { opacity: 0; transform: translateY(8px) scale(0.8); }
    20% { opacity: 1; transform: translateY(0) scale(1.1); }
    100% { opacity: 0; transform: translateY(-24px) scale(1); }
}

.xp-pop {
    display: inline-block;
    margin-left: 10px;
    color: var(--green);
    font-weight: 800;
    animation: floatUp 1.4s ease forwards;
}

/* ===== GRILLE DE CARTES ===== */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
    gap: 14px;
    margin-top: 14px;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 18px;
    transition: transform 0.25s, border-color 0.25s;
}

.card:hover {
    transform: translateY(-3px);
    border-color: rgba(255, 255, 255, 0.18);
}

.card h2 {
    font-size: 1.1em;
    font-weight: 800;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.card.span-2 { grid-column: 1 / -1; }

.card .xp-tag {
    font-size: 0.75em;
    color: var(--green);
    font-weight: 700;
}

/* Bandeau "en ce moment" */
.now-banner {
    margin-top: 14px;
    background: linear-gradient(90deg, rgba(139, 92, 246, 0.18), rgba(34, 211, 238, 0.12));
    border: 1px solid rgba(139, 92, 246, 0.4);
    border-radius: 14px;
    padding: 10px 16px;
    font-size: 1em;
    line-height: 1.5;
}

.now-banner strong { color: var(--cyan); }

/* Annonces & devoirs */
.annonce {
    background: var(--card-2);
    border-left: 4px solid var(--violet);
    border-radius: 10px;
    padding: 9px 13px;
    margin-bottom: 8px;
    line-height: 1.45;
}

.annonce:last-child { margin-bottom: 0; }

.annonce .date {
    color: var(--text-dim);
    font-size: 0.85em;
    font-weight: 600;
}

.devoir {
    display: flex;
    gap: 12px;
    align-items: baseline;
    background: var(--card-2);
    border-left: 4px solid var(--yellow);
    border-radius: 10px;
    padding: 9px 13px;
    margin-bottom: 8px;
    line-height: 1.45;
}

.devoir:last-child { margin-bottom: 0; }

.devoir .pour {
    color: var(--yellow);
    font-weight: 700;
    font-size: 0.9em;
    white-space: nowrap;
}

.empty-msg {
    color: var(--text-dim);
    line-height: 1.6;
}

/* Feu tricolore du comportement */
.feu-ligne {
    display: flex;
    align-items: center;
    gap: 22px;
    flex-wrap: wrap;
}

.feu {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 12px;
    background: rgba(0, 0, 0, 0.45);
    border: 3px solid rgba(255, 255, 255, 0.25);
    border-radius: 18px;
}

.feu-lampe {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.5);
    transition: background 0.4s ease, box-shadow 0.4s ease;
}

.feu.rouge .feu-lampe.rouge {
    background: radial-gradient(circle at 35% 30%, #fca5a5, #dc2626 70%);
    box-shadow: 0 0 20px rgba(220, 38, 38, 0.85);
    animation: clignote 1.2s ease-in-out infinite;
}

.feu.orange .feu-lampe.orange {
    background: radial-gradient(circle at 35% 30%, #fde68a, #f59e0b 70%);
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.8);
}

.feu.vert .feu-lampe.verte {
    background: radial-gradient(circle at 35% 30%, #a7f3d0, #10b981 70%);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.8);
}

@keyframes clignote {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.45; }
}

.feu-emoji {
    font-size: 2.2em;
    line-height: 1;
}

.feu-label {
    margin-top: 8px;
    color: var(--text-dim);
    font-weight: 600;
    font-size: 1.05em;
}

.feu-msg {
    margin-top: 14px;
    color: var(--text-dim);
    line-height: 1.6;
    background: var(--card-2);
    border-radius: 12px;
    padding: 12px 16px;
}

/* Parcours de l'année (historique des chapitres) */
/* Parcours en pastilles compactes (au lieu d'une longue liste) */
.chapitres {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.chapitre {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--card-2);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 5px 14px 5px 6px;
}

.chapitre-badge {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75em;
    font-weight: 800;
    flex-shrink: 0;
}

.chapitre.done .chapitre-badge {
    background: rgba(52, 211, 153, 0.18);
    border: 2px solid var(--green);
    color: var(--green);
}

.chapitre.done .chapitre-titre { color: var(--text-dim); }

.chapitre.current .chapitre-badge {
    background: linear-gradient(135deg, var(--violet), var(--cyan));
    border: none;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(139, 92, 246, 0.5); }
    50% { box-shadow: 0 0 0 8px rgba(139, 92, 246, 0); }
}

.chapitre.current .chapitre-titre {
    font-weight: 800;
}

.chapitre-tag {
    display: inline-block;
    margin-left: 8px;
    font-size: 0.7em;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #0b1020;
    background: linear-gradient(90deg, var(--violet), var(--cyan));
    padding: 3px 10px;
    border-radius: 999px;
    vertical-align: middle;
}

.chapitre.next .chapitre-badge {
    background: transparent;
    border: 2px dashed rgba(255, 255, 255, 0.25);
    color: var(--text-dim);
}

.chapitre.next .chapitre-titre {
    color: var(--text-dim);
    font-style: italic;
}

/* Compte à rebours */
.countdown { text-align: center; padding: 10px 0; }

.countdown .big {
    font-size: 3em;
    font-weight: 800;
    background: linear-gradient(90deg, var(--pink), var(--yellow));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.1;
}

.countdown .what {
    color: var(--text-dim);
    margin-top: 8px;
    line-height: 1.5;
}

.countdown .chill { font-size: 1.15em; padding: 18px 0; }

/* Défi */
.defi-question {
    background: var(--card-2);
    border-radius: 14px;
    padding: 16px 18px;
    font-size: 1.08em;
    line-height: 1.6;
    margin-bottom: 14px;
}

.btn {
    display: inline-block;
    border: none;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.98em;
    padding: 12px 22px;
    border-radius: 999px;
    transition: transform 0.2s, opacity 0.2s;
    text-decoration: none;
    color: #0b1020;
    background: linear-gradient(90deg, var(--violet), var(--cyan));
}

.btn:hover { transform: translateY(-2px); }

.btn.ghost {
    background: transparent;
    border: 2px solid var(--violet);
    color: var(--text);
}

.btn.success { background: linear-gradient(90deg, var(--green), var(--cyan)); }

.btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    transform: none;
}

.defi-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.defi-reponse {
    display: none;
    margin-top: 14px;
    background: rgba(52, 211, 153, 0.12);
    border: 1px solid rgba(52, 211, 153, 0.4);
    border-radius: 14px;
    padding: 14px 18px;
    line-height: 1.6;
}

.defi-reponse.visible { display: block; }

.defi-indice {
    display: none;
    margin-top: 12px;
    color: var(--yellow);
    line-height: 1.5;
}

.defi-indice.visible { display: block; }

/* Saisie de la réponse au défi */
.defi-saisie {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

.defi-saisie input {
    flex: 1;
    min-width: 140px;
    background: var(--card-2);
    border: 2px solid var(--border);
    border-radius: 999px;
    padding: 12px 18px;
    color: var(--text);
    font-size: 1em;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s;
}

.defi-saisie input:focus { border-color: var(--cyan); }

.defi-saisie input::placeholder { color: var(--text-dim); }

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-8px); }
    40% { transform: translateX(8px); }
    60% { transform: translateX(-5px); }
    80% { transform: translateX(5px); }
}

.defi-saisie input.shake {
    animation: shake 0.45s ease;
    border-color: var(--pink);
}

.defi-feedback {
    color: var(--pink);
    font-weight: 600;
    min-height: 1.4em;
    margin-bottom: 8px;
}

.defi-statut {
    margin-top: 12px;
    font-weight: 700;
    color: var(--text-dim);
}

.defi-statut.ok { color: var(--green); }

/* Ligne « course aux points » : qui marquera pour la classe ? */
.defi-course {
    color: var(--text-dim);
    font-weight: 600;
    font-size: 0.9em;
    margin-bottom: 10px;
}

/* Boîte à outils */
.shortcuts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 12px;
}

.shortcut {
    display: block;
    text-decoration: none;
    color: var(--text);
    background: var(--card-2);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 18px;
    transition: transform 0.2s, border-color 0.2s;
}

.shortcut:hover {
    transform: translateY(-3px);
    border-color: var(--cyan);
}

.shortcut .emoji { font-size: 1.6em; }
.shortcut .label { font-weight: 800; margin-top: 8px; }

.shortcut .desc {
    color: var(--text-dim);
    font-size: 0.9em;
    margin-top: 4px;
    line-height: 1.4;
}

/* Contact */
.contact-txt {
    color: var(--text-dim);
    line-height: 1.6;
    margin-bottom: 14px;
}

footer {
    text-align: center;
    color: var(--text-dim);
    margin-top: 40px;
    font-size: 0.9em;
    line-height: 1.8;
}

footer a { color: var(--cyan); }

/* Écran premier choix de classe */
.choose-overlay {
    position: fixed;
    inset: 0;
    background: rgba(11, 16, 32, 0.92);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    padding: 20px;
}

.choose-box {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 40px 30px;
    text-align: center;
    max-width: 460px;
    width: 100%;
}

.choose-box h2 {
    font-size: 1.6em;
    font-weight: 800;
    margin-bottom: 8px;
}

.choose-box p {
    color: var(--text-dim);
    margin-bottom: 20px;
}

.choose-box .niveau-label {
    color: var(--text-dim);
    font-weight: 700;
    font-size: 0.9em;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 18px 0 10px;
}

.choose-box .choices {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.choose-box .choices button {
    flex: 1;
    min-width: 100px;
    border: none;
    cursor: pointer;
    font-size: 1.15em;
    font-weight: 800;
    padding: 18px 10px;
    border-radius: 16px;
    color: #0b1020;
    transition: transform 0.2s;
}

.choose-box .choices button:hover { transform: scale(1.05); }
.choose-box .choices button.n4 { background: linear-gradient(135deg, var(--cyan), var(--green)); }
.choose-box .choices button.n3 { background: linear-gradient(135deg, var(--violet), var(--pink)); }

/* Écran de nuit : recouvre tout le site aux heures de dodo */
.dodo-overlay {
    position: fixed;
    inset: 0;
    background: linear-gradient(180deg, #050814, #0b1020 60%, #131a35);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    padding: 20px;
    text-align: center;
}

.dodo-box {
    max-width: 460px;
}

.dodo-lune {
    font-size: 5em;
    animation: flotte 3s ease-in-out infinite;
}

@keyframes flotte {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.dodo-box h2 {
    font-size: 1.8em;
    font-weight: 800;
    margin: 16px 0 10px;
}

.dodo-box p {
    color: var(--text-dim);
    font-size: 1.05em;
}

.dodo-retour {
    margin-top: 18px;
    font-weight: 700;
    color: var(--yellow);
}

.hidden { display: none !important; }

@media (max-width: 600px) {
    .wrap { padding: 14px; }
    .hero { padding-top: 18px; }
    .card { padding: 18px; }
    .countdown .big { font-size: 2.4em; }
}