@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

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

:root {
    --bg-primary: #0a0e27;
    --bg-secondary: #1a1f3a;
    --bg-tertiary: #2d1b4e;
    --text-primary: #ffffff;
    --text-secondary: #b8c1ec;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glow: rgba(99, 102, 241, 0.4);
}

body {
    font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(to bottom, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-tertiary) 100%);
    color: var(--text-primary);
    overflow: hidden;
    width: 100vw;
    height: 100vh;
    position: relative;
}

/* Canvas Three.js */
#moonCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    outline: none;
}

/* Background étoilé */
#stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    background-image: 
        radial-gradient(2px 2px at 20% 30%, white, transparent),
        radial-gradient(2px 2px at 60% 70%, white, transparent),
        radial-gradient(1px 1px at 50% 50%, white, transparent),
        radial-gradient(1px 1px at 80% 10%, white, transparent),
        radial-gradient(2px 2px at 90% 60%, white, transparent),
        radial-gradient(1px 1px at 33% 80%, white, transparent),
        radial-gradient(2px 2px at 15% 15%, white, transparent),
        radial-gradient(1px 1px at 70% 40%, white, transparent),
        radial-gradient(1px 1px at 25% 65%, white, transparent),
        radial-gradient(2px 2px at 85% 85%, white, transparent);
    background-size: 200% 200%;
    animation: twinkle 10s ease-in-out infinite;
    opacity: 0.7;
    transition: opacity 0.5s ease;
}

#stars.hidden {
    opacity: 0;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.7; transform: scale(1); }
    50% { opacity: 0.9; transform: scale(1.02); }
}

/* Interface utilisateur */
.ui-container {
    position: fixed;
    top: 20px;
    left: 20px;
    max-width: 380px;
    width: calc(100% - 40px);
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Header */
.header {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 24px 28px;
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Panneau de contrôles */
.controls-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 24px;
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Groupes de contrôles */
.control-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.control-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.control-header label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.value-display {
    font-size: 0.9rem;
    color: var(--accent-primary);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

/* Badge de phase */
.phase-badge {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    padding: 6px 14px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    color: white;
    box-shadow: 0 4px 12px var(--glow);
    transition: all 0.3s ease;
}

/* Sliders */
.slider-container {
    position: relative;
}

.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    transition: background 0.3s ease;
}

.slider:hover {
    background: rgba(255, 255, 255, 0.15);
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    cursor: pointer;
    box-shadow: 0 4px 12px var(--glow), 0 0 0 4px rgba(99, 102, 241, 0.2);
    transition: all 0.2s ease;
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px var(--glow), 0 0 0 6px rgba(99, 102, 241, 0.3);
}

.slider::-webkit-slider-thumb:active {
    transform: scale(0.95);
}

.slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    cursor: pointer;
    border: none;
    box-shadow: 0 4px 12px var(--glow), 0 0 0 4px rgba(99, 102, 241, 0.2);
    transition: all 0.2s ease;
}

.slider::-moz-range-thumb:hover {
    transform: scale(1.1);
}

.slider-value {
    position: absolute;
    right: 0;
    top: -28px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-variant-numeric: tabular-nums;
}

/* Indicateurs de phase */
.phase-indicators {
    display: flex;
    justify-content: space-between;
    margin-top: 4px;
}

.phase-marker {
    font-size: 1.4rem;
    cursor: pointer;
    transition: all 0.2s ease;
    opacity: 0.5;
    filter: grayscale(1);
}

.phase-marker:hover {
    opacity: 1;
    filter: grayscale(0);
    transform: scale(1.2);
}

.phase-marker.active {
    opacity: 1;
    filter: grayscale(0);
}

/* Contrôles de lecture */
.playback-controls {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.control-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 20px;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    backdrop-filter: blur(10px);
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.control-btn:active {
    transform: translateY(0);
}

.control-btn.primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border: none;
    box-shadow: 0 4px 12px var(--glow);
}

.control-btn.primary:hover {
    box-shadow: 0 6px 20px var(--glow);
    transform: translateY(-2px);
}

.control-btn svg {
    width: 20px;
    height: 20px;
}

/* Options */
.options {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-top: 8px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: color 0.2s ease;
    user-select: none;
}

.checkbox-label:hover {
    color: var(--text-primary);
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    border-radius: 6px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.05);
    position: relative;
    transition: all 0.3s ease;
}

.checkbox-label input:checked + .checkmark {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-color: var(--accent-primary);
}

.checkbox-label input:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 14px;
    font-weight: bold;
}

/* Panneau d'info */
.info-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 16px 24px;
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    display: flex;
    justify-content: space-between;
}

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

.info-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent-primary);
    font-variant-numeric: tabular-nums;
}

/* Écran de chargement */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-content {
    text-align: center;
}

.moon-loader {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    animation: moonPulse 2s ease-in-out infinite;
    box-shadow: 0 0 40px var(--glow);
}

@keyframes moonPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.loading-content h2 {
    font-size: 1.5rem;
    margin-bottom: 12px;
    font-weight: 600;
}

.loading-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    .ui-container {
        max-width: 100%;
        top: 10px;
        left: 10px;
        right: 10px;
        width: calc(100% - 20px);
    }

    .header h1 {
        font-size: 1.4rem;
    }

    .controls-panel {
        padding: 20px;
    }

    .control-btn span {
        display: none;
    }

    .playback-controls {
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 20px;
    }

    .header h1 {
        font-size: 1.2rem;
    }

    .subtitle {
        font-size: 0.8rem;
    }

    .controls-panel {
        padding: 16px;
        gap: 20px;
    }

    .phase-indicators {
        font-size: 1.2rem;
    }
}