/* CSS Variables */
:root {
    --bg-primary: #0a0a1a;
    --bg-secondary: #12122a;
    --bg-panel: #1a1a3a;
    --bg-hover: #252550;
    --text-primary: #ffffff;
    --text-secondary: #a0a0c0;
    --text-muted: #606080;
    --accent-primary: #00ff88;
    --accent-secondary: #ff00ff;
    --accent-tertiary: #00ffff;
    --accent-warning: #ffaa00;
    --accent-danger: #ff4444;
    --border-color: #333366;
    --shadow-color: rgba(0, 255, 136, 0.2);
    --glow-primary: 0 0 20px rgba(0, 255, 136, 0.3);
    --glow-secondary: 0 0 20px rgba(255, 0, 255, 0.3);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --transition: 0.2s ease;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* App Container */
.app-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    text-align: center;
    padding: 30px 20px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-panel));
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--glow-primary);
}

header h1 {
    font-size: 2.5rem;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-tertiary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
    text-shadow: var(--glow-primary);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Main Content */
main {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
}

/* Panel Styling */
.panel {
    background: var(--bg-panel);
    border-radius: var(--radius-lg);
    padding: 20px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.panel:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 0 30px rgba(0, 255, 136, 0.1);
}

.panel h2 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--accent-primary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

/* Sound Selection Grid */
.sound-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 10px;
}

.sound-btn {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 15px 10px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

.sound-btn:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--glow-primary);
}

.sound-btn.active {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    box-shadow: var(--glow-primary);
}

.sound-btn .icon {
    font-size: 1.5rem;
}

.sound-btn .label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Parameter Controls */
.param-group {
    margin-bottom: 15px;
}

.param-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.param-group input[type="range"] {
    width: 100%;
    height: 8px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    outline: none;
    cursor: pointer;
}

.param-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--glow-primary);
    transition: var(--transition);
}

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

.param-group input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: var(--glow-primary);
}

.param-group .value {
    display: block;
    text-align: right;
    font-size: 0.8rem;
    color: var(--accent-tertiary);
    margin-top: 3px;
}

/* Emulation Controls */
.emulation-controls {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.control-group label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.control-group select {
    padding: 10px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.control-group select:hover,
.control-group select:focus {
    border-color: var(--accent-primary);
    outline: none;
}

/* Toggle Switches */
.toggle-group {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 10px;
}

.toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.toggle input {
    display: none;
}

.toggle-slider {
    width: 40px;
    height: 22px;
    background: var(--bg-secondary);
    border-radius: 11px;
    position: relative;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--text-muted);
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: var(--transition);
}

.toggle input:checked + .toggle-slider {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(18px);
    background: var(--bg-primary);
}

.toggle-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Mixer */
.mixer-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.mixer-tracks {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 10px;
}

.track {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.track.has-sound {
    border-color: var(--accent-secondary);
}

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

.track-name {
    font-size: 0.8rem;
    color: var(--accent-tertiary);
    font-weight: bold;
}

.track-clear {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.8rem;
    padding: 2px 5px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.track-clear:hover {
    color: var(--accent-danger);
    background: rgba(255, 68, 68, 0.2);
}

.track-sound {
    background: var(--bg-primary);
    padding: 8px;
    border-radius: var(--radius-sm);
    min-height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.track-sound .sound-name {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.track.has-sound .track-sound .sound-name {
    color: var(--accent-primary);
}

.track-controls {
    display: flex;
    align-items: center;
    gap: 5px;
}

.track-volume {
    flex: 1;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    outline: none;
}

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

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

.track-volume-value {
    font-size: 0.7rem;
    color: var(--text-muted);
    min-width: 35px;
    text-align: right;
}

.track-timing {
    display: flex;
    align-items: center;
    gap: 5px;
}

.track-timing label {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.track-delay {
    flex: 1;
    padding: 4px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.75rem;
    max-width: 60px;
}

.mixer-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

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

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

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

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

.btn-accent:hover {
    box-shadow: var(--glow-secondary);
    transform: translateY(-2px);
}

.btn-success {
    background: var(--accent-tertiary);
    color: var(--bg-primary);
}

.btn-success:hover {
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.3);
    transform: translateY(-2px);
}

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

.btn-danger:hover {
    box-shadow: 0 0 20px rgba(255, 68, 68, 0.3);
}

.btn-large {
    padding: 15px 25px;
    font-size: 1rem;
}

/* Preview Section */
.preview-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 20px;
}

.waveform-display {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 10px;
    margin-bottom: 15px;
    overflow: hidden;
}

#waveform-canvas {
    width: 100%;
    height: 100px;
    display: block;
}

.current-sound-info {
    text-align: center;
    padding: 10px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

#current-sound-name {
    color: var(--accent-primary);
    font-weight: 600;
}

/* Presets */
.preset-actions {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.preset-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 200px;
    overflow-y: auto;
}

.preset-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.preset-item:hover {
    border-color: var(--accent-tertiary);
}

.preset-name {
    font-size: 0.9rem;
    color: var(--text-primary);
}

.preset-load {
    padding: 5px 12px;
    background: var(--accent-tertiary);
    color: var(--bg-primary);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
}

.preset-load:hover {
    transform: scale(1.05);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--bg-panel);
    padding: 30px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    min-width: 300px;
    box-shadow: 0 0 50px rgba(0, 255, 136, 0.2);
}

.modal-content h3 {
    margin-bottom: 20px;
    color: var(--accent-primary);
}

.modal-content input[type="text"] {
    width: 100%;
    padding: 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 20px;
}

.modal-content input[type="text"]:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.modal-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

/* Footer */
footer {
    margin-top: 30px;
    padding: 20px;
    text-align: center;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

footer p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

footer a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

footer a:hover {
    color: var(--accent-tertiary);
    text-shadow: var(--glow-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-container {
        padding: 10px;
    }

    header {
        padding: 20px 15px;
    }

    header h1 {
        font-size: 1.8rem;
    }

    .subtitle {
        font-size: 0.9rem;
    }

    main {
        grid-template-columns: 1fr;
    }

    .sound-grid {
        grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
    }

    .sound-btn {
        padding: 10px 8px;
    }

    .sound-btn .icon {
        font-size: 1.2rem;
    }

    .sound-btn .label {
        font-size: 0.65rem;
    }

    .preview-controls {
        flex-direction: column;
    }

    .btn-large {
        width: 100%;
        justify-content: center;
    }

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

    .mixer-actions {
        flex-direction: column;
    }

    .mixer-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .preset-actions {
        flex-direction: column;
    }

    .preset-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .toggle-group {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .sound-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .mixer-tracks {
        grid-template-columns: 1fr;
    }

    .modal-content {
        margin: 20px;
        min-width: auto;
    }
}

/* Animations */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.sound-btn.playing {
    animation: pulse 0.3s ease-in-out;
}

@keyframes glow {
    0%, 100% {
        box-shadow: var(--glow-primary);
    }
    50% {
        box-shadow: 0 0 40px rgba(0, 255, 136, 0.5);
    }
}

#preview-btn.playing {
    animation: glow 0.5s ease-in-out infinite;
}