@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;500;600;700&family=DM+Serif+Display:ital@0;1&display=swap');

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

:root {
    --bg: #0a0e1a;
    --surface: #111827;
    --surface2: #1a2235;
    --border: rgba(255,255,255,0.07);
    --border-hover: rgba(255,255,255,0.15);
    --accent: #4f8ef7;
    --accent-dim: rgba(79,142,247,0.12);
    --accent-glow: rgba(79,142,247,0.25);
    --text: #f0f4ff;
    --text-muted: #8896b3;
    --text-dim: #4a5568;
    --green: #34d399;
    --red: #f87171;
    --radius: 12px;
    --radius-sm: 8px;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Sora', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    background-image:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(79,142,247,0.08) 0%, transparent 60%);
}

.container {
    max-width: 760px;
    margin: 0 auto;
    padding: 60px 24px 80px;
}

/* LIENS PROFS — panneau latéral */
#teacher-links {
    position: fixed;
    top: 60px;
    left: 24px;
    width: 190px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    z-index: 50;
}
#teacher-links .teacher-links-title {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dim);
    margin: 0 0 6px;
}
#teacher-links a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-decoration: none;
    padding: 7px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    transition: all 0.15s ease;
}
#teacher-links a span { color: var(--text-dim); font-size: 0.75rem; }
#teacher-links a:hover {
    color: var(--accent);
    background: var(--accent-dim);
    border-color: var(--border-hover);
}
#teacher-links a:hover span { color: var(--accent); }

/* HEATMAP — panneau latéral droit */
#heatmap-panel {
    position: fixed;
    top: 280px;
    right: 24px;
    width: 200px;
    padding: 18px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    z-index: 50;
}

.heatmap-title {
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-dim);
    text-align: center;
    margin: 0 0 10px;
}

.heatmap-day-labels {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 3px;
    margin-bottom: 3px;
}

.hm-label {
    font-size: 0.52rem;
    color: var(--text-dim);
    text-align: center;
    opacity: 0.5;
}

.heatmap-cells {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 3px;
}

.hm-day {
    aspect-ratio: 1;
    border-radius: 3px;
    background: var(--surface2);
}

.hm-day.done {
    background: #22c55e;
    opacity: 0.85;
}

.hm-day.today {
    outline: 1.5px solid var(--accent);
    outline-offset: 1px;
}

.hm-day.pad {
    background: transparent;
}

@media (max-width: 1080px) {
    #heatmap-panel {
        position: static;
        width: auto;
        margin-top: 40px;
    }
}

/* Bouton Profs — caché sur grand écran */
.btn-profs { display: none; }

/* Accordion profs — caché sur grand écran */
.profs-accordion {
    display: none; /* remplacé en display:block sur mobile ci-dessous */
}

/* Masqué sur écrans étroits (pas de place sur le côté) */
@media (max-width: 1080px) {
    #teacher-links { display: none; }

    .btn-profs {
        display: block;
        grid-column: 1 / -1;
    }

    /* Se cache automatiquement dès que #menu est masqué */
    #menu.hidden + .profs-accordion { display: none !important; }

    .profs-accordion {
        display: block;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        margin-top: 4px;
    }
    .profs-accordion.open {
        max-height: 600px;
    }
    .profs-accordion-inner {
        display: flex;
        flex-direction: column;
        gap: 6px;
        padding: 12px 16px;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
    }
    .profs-accordion a {
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 0.85rem;
        color: var(--text-muted);
        text-decoration: none;
        padding: 7px 10px;
        border-radius: var(--radius-sm);
        border: 1px solid transparent;
    }
    .profs-accordion a span { color: var(--text-dim); font-size: 0.75rem; }
}

/* HEADER */
.app-header {
    text-align: center;
    margin-bottom: 56px;
}

.app-header .logo {
    font-family: 'DM Serif Display', serif;
    font-size: 2.8rem;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #f0f4ff 30%, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.site-stats {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 12px;
    flex-wrap: wrap;
}
.site-stat-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.04em;
}
.site-stat-badge.online {
    background: rgba(74, 222, 128, 0.12);
    border: 1px solid rgba(74, 222, 128, 0.35);
    color: #4ade80;
}
.site-stat-badge.total {
    background: rgba(148, 163, 184, 0.1);
    border: 1px solid rgba(148, 163, 184, 0.25);
    color: var(--text-muted);
}
.online-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #4ade80;
    box-shadow: 0 0 6px #4ade80bb;
    animation: pulse-dot 2s infinite;
    flex-shrink: 0;
}
@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.35; }
}

.app-header .tagline {
    font-size: 0.85rem;
    color: var(--text-muted);
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

/* SUBJECT MENU */
#menu {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 40px;
}

.quiz-section {
    border-radius: var(--radius);
    padding: 22px;
    transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}
.quiz-section[data-tab="quiz"] {
    border: 1px solid rgba(99,179,237,0.55);
    background: rgba(99,179,237,0.09);
    box-shadow: 0 0 24px rgba(99,179,237,0.08);
}
.quiz-section[data-tab="exo"] {
    border: 1px solid rgba(167,139,250,0.6);
    background: rgba(167,139,250,0.1);
    box-shadow: 0 0 24px rgba(167,139,250,0.09);
}
.quiz-section[data-tab="annales"] {
    border: 1px solid rgba(251,191,36,0.55);
    background: rgba(251,191,36,0.08);
    box-shadow: 0 0 24px rgba(251,191,36,0.07);
}

.menu-section-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-weight: 700;
    text-align: center;
    background: linear-gradient(135deg, var(--accent), #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0 0 10px;
}

/* Onglets Quiz / Exo types / Annales */
.quiz-tabs {
    display: flex;
    gap: 4px;
    background: var(--surface2);
    border-radius: var(--radius-sm);
    padding: 4px;
    margin-bottom: 14px;
}

.quiz-tab {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-family: 'Sora', sans-serif;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    padding: 7px 4px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.quiz-tab:hover {
    color: var(--text);
}

.quiz-tab.active {
    background: var(--surface);
    color: var(--accent);
    border: 1px solid rgba(79,142,247,0.3);
}

.quiz-tab-empty {
    font-size: 0.82rem;
    color: var(--text-dim);
    text-align: center;
    padding: 12px 0 4px;
}

.quiz-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

@media (max-width: 500px) {
    .quiz-grid { grid-template-columns: repeat(2, 1fr); }
}

#menu button {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-family: 'Sora', sans-serif;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    padding: 14px 8px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

#menu button::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--accent-dim);
    opacity: 0;
    transition: opacity 0.2s ease;
}

#menu button:hover {
    border-color: var(--border-hover);
    color: var(--text);
    transform: translateY(-2px);
}

#menu button:hover::before {
    opacity: 1;
}

#menu button.active {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-dim);
}

/* SUBJECT ICONS */
.quiz-grid button[onclick*="maths"]::after    { content: 'Σ'; font-size: 1.1rem; display: block; margin-top: 4px; opacity: 0.5; }
.quiz-grid button[onclick*="physique"]::after { content: 'ϕ'; font-size: 1.1rem; display: block; margin-top: 4px; opacity: 0.5; }
.quiz-grid button[onclick*="si"]::after       { content: '⚙'; font-size: 1.1rem; display: block; margin-top: 4px; opacity: 0.5; }
.quiz-grid button[onclick*="chimie"]::after   { content: '⬡'; font-size: 1.1rem; display: block; margin-top: 4px; opacity: 0.5; }

/* Bouton classe */
#menu button.btn-class {
    line-height: 1.25;
    padding: 14px 10px;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    background: linear-gradient(135deg, rgba(251,191,36,0.18), rgba(245,158,11,0.12));
    border: 1px solid rgba(251,191,36,0.4) !important;
    color: #fbbf24 !important;
}
#menu button.btn-class:hover {
    background: linear-gradient(135deg, rgba(251,191,36,0.28), rgba(245,158,11,0.22)) !important;
    border-color: rgba(251,191,36,0.65) !important;
}
#menu button.btn-class .btn-class-year {
    display: block;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    opacity: 0.65;
    margin-top: 2px;
}

/* CHAPTERS */
#chapters {
    margin-bottom: 32px;
}

.chapters-title {
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 16px;
    padding-left: 4px;
}

.chapters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 8px;
}

#chapters button {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-family: 'Sora', sans-serif;
    font-size: 0.8rem;
    font-weight: 400;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-align: left;
    transition: all 0.2s ease;
}

#chapters button:hover {
    border-color: var(--accent);
    color: var(--text);
    background: var(--surface2);
}

/* Code couleur de maîtrise (basé sur le meilleur score) */
#chapters button.mastery-low,
#chapters button.mastery-medium,
#chapters button.mastery-good,
#chapters button.mastery-perfect {
    border-left-width: 3px;
    border-left-style: solid;
    padding-left: 14px;
}
#chapters button.mastery-low     { border-left-color: var(--red); }
#chapters button.mastery-medium  { border-left-color: #fbbf24; }
#chapters button.mastery-good    { border-left-color: #84cc16; }
#chapters button.mastery-perfect { border-left-color: var(--green); }

#chapters button .chap-name {
    display: block;
    color: var(--text);
}

#chapters button .chap-record {
    display: block;
    font-size: 0.65rem;
    color: var(--text-dim);
    margin-top: 4px;
    letter-spacing: 0.02em;
}

/* PROGRESS BAR */
.progress-wrap {
    margin-bottom: 32px;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.progress-bar {
    height: 3px;
    background: var(--border);
    border-radius: 99px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 99px;
    transition: width 0.4s ease;
}

/* QUIZ */
#quiz {
    animation: fadeUp 0.3s ease;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

#question,
#duel-question {
    font-family: 'DM Serif Display', serif;
    font-size: 1.4rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--text);
    margin-bottom: 32px;
    padding: 28px 32px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    border-left: 3px solid var(--accent);
}

#answers,
#duel-answers {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

#answers button,
#duel-answers button {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-family: 'Sora', sans-serif;
    font-size: 0.9rem;
    font-weight: 400;
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-align: left;
    transition: all 0.2s ease;
    line-height: 1.5;
}

#answers button:hover:not(:disabled),
#duel-answers button:hover:not(:disabled) {
    border-color: var(--accent);
    color: var(--text);
    background: var(--surface2);
    transform: translateX(4px);
}

#answers button:disabled,
#duel-answers button:disabled {
    cursor: default;
}

#answers button.correct,
#duel-answers button.correct {
    background: rgba(52, 211, 153, 0.1);
    border-color: var(--green);
    color: var(--green);
}

#answers button.wrong,
#duel-answers button.wrong {
    background: rgba(248, 113, 113, 0.1);
    border-color: var(--red);
    color: var(--red);
}

/* CORRECTION MESSAGE */
.msg {
    margin-top: 20px;
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    line-height: 1.6;
}

.msg.ok {
    background: rgba(52, 211, 153, 0.08);
    border: 1px solid rgba(52, 211, 153, 0.2);
    color: var(--green);
}

.msg.ko {
    background: rgba(248, 113, 113, 0.08);
    border: 1px solid rgba(248, 113, 113, 0.2);
    color: #fca5a5;
}

/* CONTINUE BUTTON */
.btn-next {
    margin-top: 16px;
    width: 100%;
    padding: 16px;
    background: var(--accent);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-family: 'Sora', sans-serif;
    font-size: 0.88rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-next:hover {
    background: #6fa6f9;
    transform: translateY(-1px);
}

/* END SCREEN */
#end {
    text-align: center;
    animation: fadeUp 0.4s ease;
    padding: 48px 32px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.score-label {
    font-size: 0.75rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 16px;
}

.score-number {
    font-family: 'DM Serif Display', serif;
    font-size: 4rem;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 8px;
}

.score-total {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 36px;
}

.score-msg {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 32px;
    font-style: italic;
}

.btn-back {
    padding: 14px 40px;
    background: transparent;
    border: 1px solid var(--border-hover);
    color: var(--text);
    font-family: 'Sora', sans-serif;
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-back:hover {
    background: var(--surface2);
    border-color: var(--accent);
    color: var(--accent);
}

/* HIDDEN */
.hidden { display: none !important; }

/* RESPONSIVE */
@media (max-width: 768px) {
    .colles-buttons { grid-template-columns: repeat(2, 1fr); }
    .colles-btn { flex-direction: row; align-items: center; min-height: 0; padding: 14px 18px; }
    /* Bouton seul en fin de grille → pleine largeur */
    .colles-btn:last-child:nth-child(odd) { grid-column: span 2; }
}

@media (max-width: 500px) {
    #menu { grid-template-columns: repeat(2, 1fr); }
    #menu #chapters { grid-column: span 2; }
    #menu button.btn-duels,
    #menu button.btn-profs { grid-column: span 2; }
    .app-header .logo { font-size: 2rem; }
    #question, #duel-question { font-size: 1.15rem; padding: 20px; }
    .class-title { font-size: 1.4rem; }
}

.timer-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.timer {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    min-width: 32px;
    transition: color 0.3s;
}

.timer.urgent {
    color: var(--red);
}

.timer-bar {
    flex: 1;
    height: 3px;
    background: var(--border);
    border-radius: 99px;
    overflow: hidden;
}

.timer-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 99px;
    transition: width 1s linear, background 0.3s;
}

.timer.urgent ~ .timer-bar .timer-fill,
.timer-fill {
    background: var(--accent);
}

/* ============================================ */
/* ACCOUNT BUTTON (top-right)                   */
/* ============================================ */
#account-area {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 50;
}

#account-btn {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-family: 'Sora', sans-serif;
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    padding: 10px 18px;
    border-radius: 99px;
    cursor: pointer;
    transition: all 0.2s ease;
}

#account-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-dim);
}

#account-btn.connected {
    border-color: var(--accent);
    color: var(--accent);
}

#account-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px;
    min-width: 200px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
    animation: fadeUp 0.18s ease;
}

.account-email {
    font-size: 0.72rem;
    color: var(--text-dim);
    padding: 8px 10px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 6px;
    word-break: break-all;
}

#account-menu button {
    display: block;
    width: 100%;
    text-align: left;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: 'Sora', sans-serif;
    font-size: 0.82rem;
    padding: 10px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
}

#account-menu button:hover {
    background: var(--surface2);
    color: var(--accent);
}

/* ============================================ */
/* AUTH MODAL                                   */
/* ============================================ */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(5, 8, 16, 0.78);
    backdrop-filter: blur(6px);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    animation: fadeUp 0.2s ease;
}

.modal-content {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 32px 28px;
    width: 100%;
    max-width: 400px;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-size: 1.6rem;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    cursor: pointer;
    line-height: 1;
    transition: all 0.15s ease;
}

.modal-close:hover {
    color: var(--text);
    background: var(--surface2);
}

.auth-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.auth-tab {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-family: 'Sora', sans-serif;
    font-size: 0.85rem;
    font-weight: 500;
    padding: 12px 8px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all 0.2s ease;
}

.auth-tab:hover { color: var(--text-muted); }

.auth-tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

#auth-form label {
    display: block;
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 6px;
    margin-top: 14px;
}

#auth-form label:first-child { margin-top: 0; }

#auth-form input {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    color: var(--text);
    font-family: 'Sora', sans-serif;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

#auth-form input:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--surface2);
}

.btn-auth-submit {
    width: 100%;
    margin-top: 22px;
    padding: 14px;
    background: var(--accent);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-family: 'Sora', sans-serif;
    font-size: 0.88rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-auth-submit:hover { background: #6fa6f9; }
.btn-auth-submit:disabled { opacity: 0.6; cursor: wait; }

.btn-google {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 14px;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: #1f1f1f;
    font-family: 'Sora', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s, box-shadow 0.15s;
}

.btn-google:hover {
    background: #f5f5f5;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.btn-google:disabled { opacity: 0.6; cursor: wait; }

.google-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.auth-divider {
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--text-dim);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin: 18px 0 14px;
}

.auth-divider::before,
.auth-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--border);
}

.auth-divider span { padding: 0 12px; }

.auth-msg {
    margin-top: 14px;
    font-size: 0.82rem;
    text-align: center;
    min-height: 1.2em;
}

.auth-msg.error { color: var(--red); }
.auth-msg.success { color: var(--green); }

/* ============================================ */
/* SAVE STATUS (sur écran de fin)               */
/* ============================================ */
.save-status {
    font-size: 0.78rem;
    color: var(--text-dim);
    margin-bottom: 24px;
    min-height: 1em;
}

.save-status.ok { color: var(--green); }
.save-status.warn { color: #fbbf24; }

/* ============================================ */
/* PAGE STATS                                   */
/* ============================================ */
#stats { animation: fadeUp 0.3s ease; }

.stats-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    gap: 16px;
    flex-wrap: wrap;
}

.stats-header h1 {
    font-family: 'DM Serif Display', serif;
    font-size: 2rem;
    font-weight: 400;
    background: linear-gradient(135deg, #f0f4ff 30%, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stats-global {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 40px;
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
}

.stat-card .stat-value {
    font-family: 'DM Serif Display', serif;
    font-size: 2rem;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 6px;
}

.stat-card .stat-label {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-dim);
}

.stats-section-title {
    font-family: 'Sora', sans-serif;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin: 32px 0 16px;
    padding-left: 4px;
}

.best-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
}

.best-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    transition: all 0.2s ease;
}

.best-card:hover { border-color: var(--accent); }

.best-card .best-chap {
    font-size: 0.82rem;
    color: var(--text);
    margin-bottom: 4px;
}

.best-card .best-subject {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-dim);
    margin-bottom: 10px;
}

.best-card .best-score {
    display: flex;
    align-items: baseline;
    gap: 6px;
}

.best-card .best-score-num {
    font-family: 'DM Serif Display', serif;
    font-size: 1.4rem;
    color: var(--accent);
}

.best-card .best-score-pct {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.best-card .best-duration {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 6px;
    letter-spacing: 0.02em;
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.history-row {
    display: grid;
    grid-template-columns: 1fr auto auto auto;
    gap: 14px;
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: 0.85rem;
}

.history-row .h-chap { color: var(--text); }
.history-row .h-subject {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-dim);
    margin-right: 8px;
}
.history-row .h-score    { color: var(--accent); font-weight: 600; }
.history-row .h-duration { color: var(--text-muted); font-size: 0.78rem; }
.history-row .h-date     { color: var(--text-dim); font-size: 0.75rem; }

.missed-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.missed-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--red);
    border-radius: var(--radius-sm);
    padding: 14px 18px;
}

.missed-card .m-meta {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-dim);
    margin-bottom: 8px;
}

.missed-card .m-q {
    font-size: 0.9rem;
    color: var(--text);
    margin-bottom: 6px;
    line-height: 1.4;
}

.missed-card .m-a {
    font-size: 0.82rem;
    color: var(--green);
}

.empty-state {
    color: var(--text-dim);
    font-size: 0.85rem;
    padding: 16px 4px;
    font-style: italic;
}

/* ============================================ */
/* PAGE CLASSE                                  */
/* ============================================ */
#class-page, #class-section {
    animation: fadeUp 0.3s ease;
}

.class-back-row {
    margin-bottom: 24px;
}

.btn-colloscope {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
    padding: 16px 22px;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--accent), #6b7fff);
    color: #fff;
    text-decoration: none;
    font-family: 'Sora', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius);
    border: 1px solid transparent;
    box-shadow: 0 4px 16px rgba(107, 127, 255, 0.25);
    transition: all 0.2s ease;
    cursor: pointer;
}

.btn-colloscope:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(107, 127, 255, 0.35);
}

.btn-colloscope-icon {
    font-size: 1.1rem;
    opacity: 0.9;
}

.class-title {
    font-family: 'DM Serif Display', serif;
    font-size: 1.8rem;
    font-weight: 400;
    background: linear-gradient(135deg, #f0f4ff 30%, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 28px;
}

.class-buttons {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.class-buttons button {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: 'Sora', sans-serif;
    font-size: 0.95rem;
    font-weight: 500;
    text-align: left;
    padding: 20px 24px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.class-buttons button::after {
    content: '→';
    position: absolute;
    right: 22px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-dim);
    font-size: 1.1rem;
    transition: all 0.2s ease;
}

.class-buttons button:hover {
    border-color: var(--accent);
    background: var(--surface2);
    transform: translateX(4px);
}

.class-buttons button:hover::after {
    color: var(--accent);
    right: 18px;
}

/* Programmes de colle — semaines + boutons PDF */
.colles-week {
    margin-bottom: 32px;
}

.colles-week-title {
    font-family: 'Sora', sans-serif;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 14px;
    padding-left: 4px;
}

.colles-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.colles-btn {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 18px 18px;
    text-decoration: none;
    color: var(--text);
    font-family: 'Sora', sans-serif;
    transition: all 0.2s ease;
    min-height: 96px;
}

.colles-btn:hover {
    border-color: var(--accent);
    background: var(--surface2);
    transform: translateY(-2px);
}

.colles-btn-subject {
    font-size: 0.95rem;
    font-weight: 500;
}

.colles-btn-icon {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    color: var(--accent);
    text-transform: uppercase;
    font-weight: 600;
}

/* ============================================ */
/* À REVOIR (bannière)                          */
/* ============================================ */
#review-banner {
    margin: 24px 0 12px;
    padding: 18px 22px;
    background: linear-gradient(135deg, rgba(79,142,247,0.12), rgba(79,142,247,0.04));
    border: 1px solid rgba(79,142,247,0.25);
    border-radius: var(--radius);
}

.review-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.review-title {
    font-family: 'DM Serif Display', serif;
    font-size: 1.15rem;
    color: var(--text);
    margin-bottom: 2px;
}

.review-sub {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.btn-review {
    background: var(--accent);
    border: none;
    color: white;
    font-family: 'Sora', sans-serif;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    padding: 12px 22px;
    border-radius: 99px;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.btn-review:hover {
    background: #6fa6f9;
    transform: translateY(-1px);
}

/* ============================================ */
/* FORUM                                        */
/* ============================================ */
#menu button.btn-forum {
    background: linear-gradient(135deg, rgba(99,179,237,0.18), rgba(154,117,249,0.18));
    border: 1px solid rgba(99,179,237,0.35);
    color: #90cdf4;
    line-height: 1.25;
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.06em;
}
#menu button.btn-forum:hover {
    border-color: rgba(99,179,237,0.6);
    background: linear-gradient(135deg, rgba(99,179,237,0.28), rgba(154,117,249,0.28));
}
@media (max-width: 500px) {
    #menu button.btn-forum { grid-column: span 2; }
}

.forum-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 10px;
}

.btn-new-topic {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    padding: 8px 16px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: opacity 0.15s;
}
.btn-new-topic:hover { opacity: 0.85; }

.forum-login-hint {
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-bottom: 12px;
}

.forum-search-row {
    margin-bottom: 16px;
}
.forum-search-row input {
    width: 100%;
    box-sizing: border-box;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: inherit;
    font-size: 0.9rem;
    padding: 10px 14px;
    outline: none;
    transition: border-color 0.15s;
}
.forum-search-row input:focus { border-color: var(--accent); }

/* Topic card dans la liste */
.forum-topic-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 18px;
    margin-bottom: 10px;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
    position: relative;
}

.forum-new-badge {
    position: absolute;
    top: 10px;
    right: 12px;
    background: var(--red);
    color: white;
    font-size: 0.6rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 99px;
    letter-spacing: 0.05em;
}
.forum-topic-card:hover {
    border-color: var(--accent);
    background: var(--surface2);
}
.forum-topic-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
}
.forum-topic-meta {
    display: flex;
    gap: 12px;
    font-size: 0.75rem;
    color: var(--text-dim);
    flex-wrap: wrap;
}
.forum-topic-meta span { color: var(--accent); font-weight: 500; }
.forum-empty {
    font-size: 0.85rem;
    color: var(--text-dim);
    padding: 8px 0;
}

/* Détail d'un topic */
.forum-topic-detail {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 24px;
}
.forum-topic-detail-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text);
}
.forum-topic-detail-meta {
    font-size: 0.78rem;
    color: var(--text-dim);
    margin-bottom: 14px;
}
.forum-topic-detail-meta span { color: var(--accent); }
.forum-topic-detail-content {
    font-size: 0.92rem;
    color: var(--text);
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
}

/* Réponses */
.forum-replies-title {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dim);
    margin: 0 0 12px;
}
.forum-reply-card {
    border-left: 3px solid var(--border);
    padding: 12px 16px;
    margin-bottom: 10px;
}
.forum-reply-meta {
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-bottom: 6px;
}
.forum-reply-meta span { color: var(--accent); }
.forum-reply-content {
    font-size: 0.9rem;
    color: var(--text);
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-word;
}
.forum-delete-btn {
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-size: 0.72rem;
    cursor: pointer;
    padding: 0;
    margin-top: 6px;
    opacity: 0.6;
}
.forum-delete-btn:hover { opacity: 1; color: #f87171; }

/* Formulaire reply */
.forum-reply-form {
    margin-top: 24px;
    border-top: 1px solid var(--border);
    padding-top: 20px;
}
.forum-form textarea,
.forum-reply-form textarea {
    width: 100%;
    box-sizing: border-box;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: inherit;
    font-size: 0.9rem;
    padding: 12px 14px;
    resize: none;
    height: 100px;
    outline: none;
    transition: border-color 0.15s;
}
.forum-form textarea:focus,
.forum-reply-form textarea:focus { border-color: var(--accent); }
.forum-form input[type="text"] {
    width: 100%;
    box-sizing: border-box;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: inherit;
    font-size: 0.9rem;
    padding: 10px 14px;
    outline: none;
    transition: border-color 0.15s;
}
.forum-form input[type="text"]:focus { border-color: var(--accent); }
.forum-label {
    display: block;
    font-size: 0.78rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 6px;
}
.forum-form-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 8px;
}
.forum-chars {
    font-size: 0.75rem;
    color: var(--text-dim);
}
.btn-post {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    padding: 7px 18px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: opacity 0.15s;
}
.btn-post:hover { opacity: 0.85; }

/* ============================================ */
/* LEADERBOARD                                  */
/* ============================================ */
#leaderboard {
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.lb-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.lb-row {
    display: grid;
    grid-template-columns: 36px 1fr auto auto;
    gap: 12px;
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-size: 0.85rem;
    transition: border-color 0.2s ease;
}

.lb-row:hover { border-color: var(--border-hover); }

.lb-rank {
    font-family: 'DM Serif Display', serif;
    font-size: 1.1rem;
    color: var(--text-dim);
    text-align: center;
}

.lb-top1 { border-color: rgba(250, 204, 21, 0.45); }
.lb-top1 .lb-rank { color: #facc15; }
.lb-top2 { border-color: rgba(203, 213, 225, 0.35); }
.lb-top2 .lb-rank { color: #cbd5e1; }
.lb-top3 { border-color: rgba(217, 119, 6, 0.35); }
.lb-top3 .lb-rank { color: #d97706; }

.lb-name {
    color: var(--text);
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.lb-questions {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.82rem;
}

.lb-pct {
    color: var(--text-muted);
    font-size: 0.78rem;
    min-width: 42px;
    text-align: right;
}

/* responsive */
@media (max-width: 500px) {
    #account-area { top: 12px; right: 12px; }
    #account-btn { padding: 8px 14px; font-size: 0.72rem; }
    .stats-header h1 { font-size: 1.5rem; }
    .history-row { grid-template-columns: 1fr auto; font-size: 0.8rem; }
    .history-row .h-duration { grid-column: 1 / -1; }
    .history-row .h-date     { grid-column: 1 / -1; }
    .lb-row { grid-template-columns: 28px 1fr auto auto; gap: 8px; padding: 9px 11px; font-size: 0.8rem; }
    .lb-rank { font-size: 0.95rem; }
}

/* ============================================ */
/* DUELS                                        */
/* ============================================ */

/* Bouton duels dans le menu */
#menu button.btn-duels {
    position: relative;
    background: linear-gradient(135deg, rgba(248, 113, 113, 0.18), rgba(79, 142, 247, 0.18));
    border: 1px solid rgba(248, 113, 113, 0.35);
    line-height: 1.25;
    padding: 20px 8px;
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.06em;
}

#menu button.btn-duels:hover {
    border-color: rgba(248, 113, 113, 0.6);
    background: linear-gradient(135deg, rgba(248, 113, 113, 0.28), rgba(79, 142, 247, 0.28));
}

.duels-badge {
    position: absolute;
    top: 6px;
    right: 8px;
    background: var(--red);
    color: white;
    font-size: 0.65rem;
    font-weight: 700;
    padding: 1px 6px;
    border-radius: 99px;
    min-width: 18px;
    text-align: center;
}

/* Bouton primaire générique */
.btn-primary {
    background: var(--accent);
    border: none;
    color: white;
    font-family: 'Sora', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: 99px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary:hover {
    background: #6fa6f9;
    transform: translateY(-1px);
}

/* Barre de recherche */
.duels-search-row {
    margin-bottom: 16px;
}

#duels-search-input {
    width: 100%;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: 'Sora', sans-serif;
    font-size: 0.95rem;
    padding: 14px 18px;
    border-radius: var(--radius);
    transition: border-color 0.2s ease;
}

#duels-search-input:focus {
    outline: none;
    border-color: var(--accent);
}

#duels-search-results {
    margin-bottom: 32px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.duels-search-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.duels-search-item:hover {
    border-color: var(--accent);
    background: var(--surface2);
    transform: translateX(2px);
}

.duels-search-pseudo {
    font-weight: 600;
    color: var(--text);
}

.duels-search-meta {
    color: var(--text-muted);
    font-size: 0.78rem;
}

/* Sections de la page duels */
.duels-section-title {
    font-family: 'Sora', sans-serif;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin: 28px 0 12px;
}

.duel-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 18px;
    margin-bottom: 8px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    align-items: center;
}

.duel-card-info { display: flex; flex-direction: column; gap: 4px; }
.duel-card-pseudo { font-weight: 600; color: var(--text); }
.duel-card-meta { color: var(--text-muted); font-size: 0.78rem; }
.duel-card-mode {
    display: inline-block;
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 99px;
    background: var(--accent-dim);
    color: var(--accent);
    margin-left: 6px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.duel-card-actions { display: flex; gap: 8px; }

.duel-card-actions button {
    background: var(--accent);
    border: none;
    color: white;
    font-family: 'Sora', sans-serif;
    font-size: 0.78rem;
    font-weight: 600;
    padding: 8px 14px;
    border-radius: 99px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.duel-card-actions button.btn-decline {
    background: var(--surface2);
    color: var(--text-muted);
}

.duel-card-actions button:hover { transform: translateY(-1px); }

.duel-card.win   { border-left: 3px solid var(--green); }
.duel-card.loss  { border-left: 3px solid var(--red); }
.duel-card.draw  { border-left: 3px solid var(--text-muted); }

.duel-card-result {
    font-weight: 700;
    font-size: 0.95rem;
}
.duel-card-result.win  { color: var(--green); }
.duel-card-result.loss { color: var(--red); }
.duel-card-result.draw { color: var(--text-muted); }

/* Page profil joueur */
.player-profile-header {
    text-align: center;
    margin-bottom: 32px;
}

.player-profile-pseudo {
    font-family: 'DM Serif Display', serif;
    font-size: 2rem;
    background: linear-gradient(135deg, #f0f4ff 30%, var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 12px;
}

.player-record {
    display: inline-flex;
    gap: 18px;
    padding: 10px 22px;
    border: 1px solid var(--border);
    border-radius: 99px;
    background: var(--surface);
    font-size: 0.85rem;
}

.player-record .rec-w { color: var(--green); font-weight: 700; }
.player-record .rec-l { color: var(--red); font-weight: 700; }
.player-record .rec-d { color: var(--text-muted); font-weight: 700; }

.btn-challenge {
    display: block;
    margin: 24px auto;
    background: linear-gradient(135deg, var(--accent), #f87171);
    border: none;
    color: white;
    font-family: 'Sora', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    padding: 14px 36px;
    border-radius: 99px;
    cursor: pointer;
    box-shadow: 0 4px 18px rgba(79, 142, 247, 0.3);
    transition: all 0.2s ease;
}

.btn-challenge:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 22px rgba(79, 142, 247, 0.4);
}

/* Modal de défi */
.modal-content h3 {
    font-family: 'DM Serif Display', serif;
    font-size: 1.4rem;
    margin-bottom: 4px;
    color: var(--text);
}

.challenge-sub {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 18px;
}

.challenge-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.challenge-opt {
    background: var(--surface2);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: 'Sora', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 14px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s ease;
}

.challenge-opt:hover {
    border-color: var(--accent);
    background: var(--accent-dim);
}

.challenge-opt.challenge-mixed {
    grid-column: span 2;
    background: linear-gradient(135deg, rgba(79, 142, 247, 0.18), rgba(248, 113, 113, 0.18));
    border-color: rgba(79, 142, 247, 0.35);
}

/* Pseudo modal */
.pseudo-help {
    color: var(--text-muted);
    font-size: 0.82rem;
    margin: 6px 0 16px;
    line-height: 1.5;
}

#pseudo-input {
    width: 100%;
    background: var(--surface2);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: 'Sora', sans-serif;
    font-size: 0.95rem;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 14px;
}

#pseudo-input:focus { outline: none; border-color: var(--accent); }

/* Gameplay duel */
.duel-header {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.duel-player {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 18px;
    text-align: center;
}

.duel-player.you { border-color: rgba(79, 142, 247, 0.4); }
.duel-player.opp { border-color: rgba(248, 113, 113, 0.4); }

.duel-player-pseudo {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.duel-player-score {
    font-family: 'DM Serif Display', serif;
    font-size: 2rem;
    line-height: 1;
}

.duel-player.you .duel-player-score { color: var(--accent); }
.duel-player.opp .duel-player-score { color: var(--red); }

.duel-vs {
    font-family: 'DM Serif Display', serif;
    font-size: 1.1rem;
    color: var(--text-dim);
    letter-spacing: 0.1em;
}

.duel-progress-bars {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 18px;
}

.duel-prog {
    height: 4px;
    background: var(--surface);
    border-radius: 99px;
    overflow: hidden;
}

.duel-prog-fill {
    height: 100%;
    transition: width 0.3s ease;
}

.duel-prog-fill.you { background: var(--accent); }
.duel-prog-fill.opp { background: var(--red); }

.duel-status-label {
    color: var(--text-muted);
    font-size: 0.78rem;
}

/* Overlay duel (waiting room / countdown) */
.duel-overlay {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    border-left: 3px solid var(--accent);
    padding: 64px 24px;
    text-align: center;
    margin-bottom: 24px;
    min-height: 240px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.duel-overlay-message {
    font-family: 'DM Serif Display', serif;
    font-size: 1.6rem;
    color: var(--text);
    line-height: 1.3;
}

.duel-overlay-message.countdown {
    font-size: 6rem;
    color: var(--accent);
    line-height: 1;
    animation: countdownPulse 1s ease-out;
}

.duel-overlay-message.go {
    font-size: 6rem;
    color: var(--green);
    line-height: 1;
    animation: goFlash 0.8s ease-out;
}

@keyframes countdownPulse {
    0%   { transform: scale(0.4); opacity: 0; }
    40%  { transform: scale(1.25); opacity: 1; }
    100% { transform: scale(1);   opacity: 1; }
}

@keyframes goFlash {
    0%   { transform: scale(0.5); opacity: 0; }
    25%  { transform: scale(1.4); opacity: 1; }
    60%  { transform: scale(1.1); opacity: 1; }
    100% { transform: scale(1);   opacity: 1; }
}

.duel-overlay-sub {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.duel-overlay-actions {
    margin-top: 8px;
}

.duel-overlay-actions button {
    background: var(--surface2);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-family: 'Sora', sans-serif;
    font-size: 0.85rem;
    padding: 10px 20px;
    border-radius: 99px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.duel-overlay-actions button:hover {
    border-color: var(--red);
    color: var(--red);
}

.duel-spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 10px;
    vertical-align: middle;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Écran résultat duel */
#duel-end {
    text-align: center;
    padding-top: 20px;
}

.duel-end-verdict-win   { color: var(--green); }
.duel-end-verdict-loss  { color: var(--red); }
.duel-end-verdict-draw  { color: var(--text-muted); }

.duel-end-scores {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 24px 0;
}

.duel-end-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
}

.duel-end-card.winner { border-color: var(--green); background: linear-gradient(135deg, rgba(52, 211, 153, 0.08), transparent); }
.duel-end-card-pseudo { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 8px; }
.duel-end-card-score { font-family: 'DM Serif Display', serif; font-size: 2.5rem; line-height: 1; }
.duel-end-card-time  { color: var(--text-muted); font-size: 0.8rem; margin-top: 8px; }

/* Empty state */
.duels-empty {
    color: var(--text-muted);
    font-size: 0.85rem;
    padding: 12px 4px;
}

/* Responsive duels */
@media (max-width: 500px) {
    .duel-header { gap: 8px; }
    .duel-player { padding: 10px 12px; }
    .duel-player-score { font-size: 1.6rem; }
    .duel-vs { font-size: 0.9rem; }
    .challenge-options { grid-template-columns: 1fr; }
    .challenge-opt.challenge-mixed { grid-column: span 1; }
    .duel-end-scores { grid-template-columns: 1fr; }
}