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

:root {
    --bg: #08080c;
    --bg-card: #0e0e14;
    --bg-card-active: #141420;
    --text: #d8d4cc;
    --text-secondary: #7a7570;
    --text-dim: #3a3835;
    --accent: #7a8a6a;
    --accent-glow: rgba(122, 138, 106, 0.15);
    --border: rgba(255, 255, 255, 0.04);
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', sans-serif;
    min-height: 100vh;
    overflow-x: hidden;
}

#viz-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.3;
}

.app {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 24px;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    font-family: 'Space Mono', monospace;
    font-size: 36px;
    font-weight: 700;
    letter-spacing: 12px;
    color: var(--text);
    text-shadow: 0 0 30px var(--accent-glow);
}

.tagline {
    font-size: 12px;
    color: var(--text-secondary);
    letter-spacing: 4px;
    margin-top: 4px;
    font-weight: 300;
}

/* Mixer Grid */
.mixer-grid {
    margin-bottom: 32px;
}

.mixer-category {
    margin-bottom: 24px;
}

.cat-header {
    font-family: 'Space Mono', monospace;
    font-size: 10px;
    letter-spacing: 4px;
    color: var(--text-dim);
    margin-bottom: 12px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}

.layer-card {
    display: grid;
    grid-template-columns: 32px 120px 1fr 40px;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 6px;
    transition: all 0.3s ease;
}

.layer-card.active {
    background: var(--bg-card-active);
    border-color: rgba(122, 138, 106, 0.2);
    box-shadow: 0 0 15px var(--accent-glow);
}

.layer-card.suggested {
    border-color: rgba(122, 138, 106, 0.1);
    transition: border-color 0.5s ease;
}

.layer-card.loading .layer-name::after {
    content: " ...";
    color: var(--text-dim);
    animation: blink 1s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

.layer-icon {
    font-size: 18px;
    text-align: center;
}

.layer-name {
    font-size: 13px;
    font-weight: 400;
    color: var(--text-secondary);
}

.layer-card.active .layer-name {
    color: var(--text);
}

.layer-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 3px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.layer-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    box-shadow: 0 0 6px var(--accent-glow);
}

.layer-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: none;
}

.layer-val {
    font-family: 'Space Mono', monospace;
    font-size: 10px;
    color: var(--text-dim);
    text-align: right;
}

.layer-card.active .layer-val {
    color: var(--text-secondary);
}

/* Controls Bar */
.controls-bar {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 16px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    margin-bottom: 32px;
}

.master-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent);
    border: none;
    color: var(--bg);
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.2s;
    box-shadow: 0 0 15px var(--accent-glow);
}

.master-toggle:hover {
    transform: scale(1.05);
    box-shadow: 0 0 25px var(--accent-glow);
}

.master-volume {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 12px;
}

.vol-label {
    font-family: 'Space Mono', monospace;
    font-size: 9px;
    letter-spacing: 3px;
    color: var(--text-dim);
    white-space: nowrap;
}

.vol-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 3px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.vol-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
}

.vol-slider::-moz-range-thumb {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: none;
}

.preset-controls {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}

.preset-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-family: 'Space Mono', monospace;
    font-size: 10px;
    letter-spacing: 1px;
    padding: 8px 14px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.preset-btn:hover {
    border-color: var(--accent);
    color: var(--text);
}

/* Presets */
.presets-section {
    margin-bottom: 40px;
}

.section-header {
    font-family: 'Space Mono', monospace;
    font-size: 10px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 12px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}

.presets-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.preset-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 10px 16px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.preset-item:hover {
    border-color: var(--accent);
    background: var(--bg-card-active);
}

.preset-name {
    font-size: 13px;
    font-weight: 400;
}

.preset-meta {
    font-size: 10px;
    color: var(--text-dim);
}

.empty-presets {
    color: var(--text-dim);
    font-size: 12px;
    font-style: italic;
}

/* Footer */
.footer {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.footer-text {
    font-family: 'Space Mono', monospace;
    font-size: 9px;
    color: var(--text-dim);
    letter-spacing: 2px;
}

.footer-text a {
    color: var(--text-secondary);
    text-decoration: none;
}

.footer-text a:hover {
    color: var(--accent);
}

/* Start overlay — initializes audio on user gesture */
.mobile-start-overlay {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg);
    z-index: 100;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

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

.start-logo {
    font-family: 'Space Mono', monospace;
    font-size: 48px;
    font-weight: 700;
    letter-spacing: 12px;
    color: var(--text);
    text-shadow: 0 0 30px var(--accent-glow);
    margin-bottom: 24px;
}

.start-text {
    font-size: 14px;
    color: var(--text-secondary);
    letter-spacing: 4px;
    animation: pulse 2s ease-in-out infinite;
}

.start-hint {
    font-size: 10px;
    color: var(--text-dim);
    margin-top: 16px;
    letter-spacing: 1px;
}

@keyframes pulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

/* Responsive */
@media (max-width: 600px) {
    .logo {
        font-size: 28px;
        letter-spacing: 8px;
    }

    .layer-card {
        grid-template-columns: 28px 1fr 36px;
        gap: 8px;
        padding: 14px 12px;
    }

    .layer-name {
        display: none;
    }

    .layer-slider {
        height: 8px;
    }

    .layer-slider::-webkit-slider-thumb {
        width: 24px;
        height: 24px;
    }

    .layer-slider::-moz-range-thumb {
        width: 24px;
        height: 24px;
    }

    .master-toggle {
        width: 52px;
        height: 52px;
        font-size: 20px;
    }

    .controls-bar {
        flex-wrap: wrap;
    }

    .master-volume {
        order: 3;
        width: 100%;
    }
}