:root {
    --bg-primary: #0f0e17;
    --bg-secondary: #1a1a2e;
    --bg-card: #222244;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0b0;
    --accent: #6c5ce7;
    --accent-light: #a29bfe;
    --staff-color: #666;
    --note-color: #f0f0f0;
    --correct-color: #00cec9;
    --wrong-color: #ff6b6b;
    --timeout-color: #fdcb6e;
    --border-color: #333355;
    --shadow: 0 4px 20px rgba(0,0,0,0.4);
}

[data-theme="light"] {
    --bg-primary: #f5f5f8;
    --bg-secondary: #ffffff;
    --bg-card: #eeeef4;
    --text-primary: #2d3436;
    --text-secondary: #636e72;
    --accent: #6c5ce7;
    --accent-light: #a29bfe;
    --staff-color: #444;
    --note-color: #1a1a2e;
    --correct-color: #00b894;
    --wrong-color: #e17055;
    --timeout-color: #e17055;
    --border-color: #ddd;
    --shadow: 0 4px 20px rgba(0,0,0,0.1);
}

/* Garantit que hidden n'est jamais écrasé par display: flex/grid */
[hidden] {
    display: none !important;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: grid;
    grid-template-rows: auto 1fr auto;
    overflow: hidden;
}

/* Header */
.game-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--accent-light);
    letter-spacing: -0.5px;
}

.header-center {
    display: flex;
    gap: 24px;
}

.stat-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 70px;
}

.stat-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
}

.stat-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

#streak-display.streak-glow .stat-value {
    color: var(--accent-light);
    text-shadow: 0 0 12px var(--accent);
    animation: glow-pulse 0.5s ease-out;
}

/* Buttons */
.btn {
    border: none;
    border-radius: 8px;
    padding: 10px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    font-family: inherit;
}

.btn-primary {
    background: var(--accent);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-light);
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background: var(--border-color);
}

.btn-danger {
    background: var(--wrong-color);
    color: white;
}

.btn-danger:hover {
    opacity: 0.85;
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-ghost:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.btn-icon {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
}

.btn-icon:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

/* Game Area */
.game-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    gap: 16px;
    position: relative;
}

.staff-wrapper {
    position: relative;
    width: 100%;
    max-width: 800px;
}

.staff-container {
    width: 100%;
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.staff-svg {
    width: 100%;
    height: auto;
    display: block;
}

.staff-container.shake {
    animation: shake 0.4s ease-out;
}

/* Feedback */
.feedback-overlay {
    position: absolute;
    top: 50%;
    right: 40px;
    transform: translateY(-50%);
    font-size: 1.8rem;
    font-weight: 800;
    padding: 8px 20px;
    border-radius: 10px;
    z-index: 10;
    animation: fade-in 0.15s ease-out;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.feedback-overlay.correct {
    color: var(--correct-color);
    background: rgba(0, 206, 201, 0.1);
}

.feedback-overlay.wrong {
    color: var(--wrong-color);
    background: rgba(255, 107, 107, 0.1);
}

.feedback-overlay.timeout {
    color: var(--timeout-color);
    background: rgba(253, 203, 110, 0.1);
}

.wrong-answer {
    text-decoration: line-through;
    opacity: 0.6;
    font-size: 1.1rem;
}

.correct-answer {
    font-size: 1.3rem;
}

.timeout-label {
    font-size: 1rem;
    opacity: 0.7;
}

.note-solfege {
    display: block;
    font-size: 1.4rem;
    font-weight: 800;
    line-height: 1.1;
}

.note-letter {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    opacity: 0.75;
}

/* Countdown */
.countdown-display {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 4rem;
    font-weight: 900;
    color: var(--accent-light);
    z-index: 20;
    text-shadow: 0 0 30px var(--accent);
}

.countdown-display.pulse-in {
    animation: pulse-scale 0.5s ease-out;
}

/* Beat Indicator */
.beat-indicator {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.beat-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--border-color);
    transition: all 0.1s ease;
}

.beat-dot.active {
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent);
    transform: scale(1.3);
}

/* Note preview (mode exploration, jeu arrêté) */
.note-preview-label {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    animation: fade-in-up 0.15s ease-out;
    pointer-events: none;
}

.preview-solfege {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--accent-light);
    line-height: 1;
}

.preview-letter {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
}

@keyframes fade-in-up {
    from { opacity: 0; transform: translateX(-50%) translateY(6px); }
    to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* Round End */
.round-end-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    backdrop-filter: blur(4px);
}

.round-end-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    max-width: 400px;
    width: 90%;
    box-shadow: var(--shadow);
    animation: slide-up 0.3s ease-out;
}

.round-end-card h2 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.grade {
    font-size: 4rem;
    font-weight: 900;
    margin: 12px 0 24px;
    line-height: 1;
}

.grade-S { color: #ffd700; text-shadow: 0 0 20px rgba(255, 215, 0, 0.5); }
.grade-A { color: var(--correct-color); }
.grade-B { color: var(--accent-light); }
.grade-C { color: var(--timeout-color); }
.grade-D { color: var(--wrong-color); }
.grade-F { color: #999; }

.round-stats {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 20px;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.round-stats .stat-label {
    font-size: 0.75rem;
}

.round-stats .stat-value {
    font-size: 1.2rem;
}

.level-unlock {
    color: var(--correct-color);
    font-weight: 600;
    margin-bottom: 16px;
}

.level-retry {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 16px;
}

.round-end-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Controls */
.controls {
    padding: 12px 24px 16px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.key-hints {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.key-hint {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.key-cap {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 28px;
    padding: 0 6px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    font-family: inherit;
    color: var(--text-primary);
    box-shadow: 0 2px 0 var(--border-color);
}

.key-note {
    font-size: 0.72rem;
    color: var(--text-primary);
    font-weight: 700;
}

.key-note-letter {
    font-size: 0.65rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.key-hint-info {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-left: 12px;
}

.control-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.control-group {
    display: flex;
    align-items: center;
}

.control-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.slider {
    width: 120px;
    accent-color: var(--accent);
    cursor: pointer;
}

.bpm-display {
    font-weight: 700;
    color: var(--text-primary);
    min-width: 30px;
    text-align: center;
    font-variant-numeric: tabular-nums;
}

.select {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 6px 10px;
    font-size: 0.85rem;
    font-family: inherit;
    cursor: pointer;
}

.select:disabled,
.slider:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Animations */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    15% { transform: translateX(-6px); }
    30% { transform: translateX(5px); }
    45% { transform: translateX(-4px); }
    60% { transform: translateX(3px); }
    75% { transform: translateX(-2px); }
}

@keyframes fade-in {
    from { opacity: 0; transform: translateY(-50%) scale(0.9); }
    to { opacity: 1; transform: translateY(-50%) scale(1); }
}

@keyframes pulse-scale {
    0% { transform: translate(-50%, -50%) scale(1.5); opacity: 0.5; }
    100% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
}

@keyframes glow-pulse {
    0% { text-shadow: 0 0 20px var(--accent); }
    100% { text-shadow: 0 0 12px var(--accent); }
}

@keyframes slide-up {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 600px) {
    .game-header {
        padding: 8px 12px;
    }

    .header-center {
        gap: 12px;
    }

    .stat-value {
        font-size: 1.1rem;
    }

    .logo {
        font-size: 1.1rem;
    }

    .game-area {
        padding: 12px;
    }

    .staff-container {
        padding: 12px;
    }

    .controls {
        padding: 8px 12px 12px;
    }

    .control-bar {
        gap: 12px;
    }

    .slider {
        width: 80px;
    }

    .key-hints {
        gap: 4px;
    }

    .key-cap {
        min-width: 26px;
        height: 24px;
        font-size: 0.7rem;
    }

    .countdown-display {
        font-size: 3rem;
    }

    .feedback-overlay {
        font-size: 1.4rem;
        right: 20px;
    }

    .round-end-card {
        padding: 24px;
    }

    .grade {
        font-size: 3rem;
    }
}