/* Drone — Ambient Soundscape Styles */

:root {
    --bg-deep: #050508;
    --bg-surface: #0c0c12;
    --bg-layer: #101018;
    --text-primary: #d8d8e0;
    --text-muted: #5a5a6e;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-warm: #f59e0b;
    --accent-glow: rgba(99, 102, 241, 0.4);
    --border-subtle: rgba(255, 255, 255, 0.06);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-deep);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 2rem 1rem;
}

.container {
    width: 100%;
    max-width: 700px;
    margin: 0 auto;
}

/* Navigation */
.tool-nav {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.nav-link:hover {
    color: var(--text-primary);
    border-color: var(--border-subtle);
}

.nav-link.active {
    color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
    border-color: rgba(99, 102, 241, 0.3);
}

/* Header */
header {
    text-align: center;
    margin-bottom: 2rem;
}

footer .credits {
    margin-top: 0.5rem;
    font-style: normal;
    font-size: 0.7rem;
    opacity: 0.6;
}

h1 {
    font-size: 2.2rem;
    font-weight: 200;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.85rem;
    letter-spacing: 0.2em;
    margin-top: 0.5rem;
}

/* Visualizer */
.visualizer-container {
    background: var(--bg-surface);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-subtle);
}

#visualizer {
    width: 100%;
    height: 120px;
    display: block;
    border-radius: 8px;
}

/* Master Controls */
.master-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    padding: 1rem;
    background: var(--bg-surface);
    border-radius: 12px;
    border: 1px solid var(--border-subtle);
}

.power-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 2px solid var(--border-subtle);
    background: var(--bg-layer);
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.power-btn svg {
    width: 28px;
    height: 28px;
}

.power-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.power-btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
    box-shadow: 0 0 30px var(--accent-glow);
}

.master-volume {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.master-volume label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
}

.master-volume input[type="range"] {
    width: 120px;
}

/* Layers */
.layers {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.layer {
    background: var(--bg-surface);
    border-radius: 12px;
    padding: 1rem;
    border: 1px solid var(--border-subtle);
    transition: all 0.3s ease;
}

.layer:hover {
    border-color: rgba(99, 102, 241, 0.3);
}

.layer.muted {
    opacity: 0.5;
}

.layer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.layer-name {
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.05em;
}

.mute-btn {
    width: 28px;
    height: 28px;
    border-radius: 4px;
    border: 1px solid var(--border-subtle);
    background: var(--bg-layer);
    color: var(--text-muted);
    font-size: 0.7rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.mute-btn:hover {
    border-color: var(--accent-warm);
}

.mute-btn[data-muted="true"] {
    background: var(--accent-warm);
    border-color: var(--accent-warm);
    color: black;
}

.layer-controls {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.control-group label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.control-group .value {
    font-size: 0.7rem;
    color: var(--accent-primary);
    font-variant-numeric: tabular-nums;
}

.waveform-select {
    grid-column: span 1;
}

.wave-buttons {
    display: flex;
    gap: 0.25rem;
}

.wave-btn {
    flex: 1;
    padding: 0.4rem 0;
    border: 1px solid var(--border-subtle);
    background: var(--bg-layer);
    color: var(--text-muted);
    font-size: 1rem;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.wave-btn:hover {
    border-color: var(--accent-primary);
}

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

/* Range Inputs */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: var(--bg-layer);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent-primary);
    cursor: pointer;
    transition: transform 0.2s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

input[type="range"]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent-primary);
    cursor: pointer;
    border: none;
}

/* Modulation Section */
.modulation-section {
    background: var(--bg-surface);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-subtle);
}

.modulation-section h2,
.presets-section h2 {
    font-size: 0.75rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.mod-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

/* Presets */
.presets-section {
    margin-bottom: 2rem;
}

.presets {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
}

.preset-btn {
    padding: 0.75rem 0.5rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.preset-btn:hover {
    border-color: var(--accent-secondary);
    background: rgba(139, 92, 246, 0.1);
}

.preset-btn.active {
    border-color: var(--accent-secondary);
    background: var(--accent-secondary);
    color: white;
}

/* Footer */
footer {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-subtle);
}

footer p {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-style: italic;
    letter-spacing: 0.05em;
}

/* Responsive */
@media (max-width: 600px) {
    .layer-controls {
        grid-template-columns: repeat(2, 1fr);
    }

    .presets {
        grid-template-columns: repeat(2, 1fr);
    }

    .mod-controls {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: 1.6rem;
        letter-spacing: 0.3em;
    }
}