/* ========================================
   SOUNDIFY — Iterative Sound Design
   A dark, sophisticated audio workstation UI
   ======================================== */

:root {
    /* Core palette - deep space aesthetic */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a26;
    --bg-panel: #14141e;
    --bg-hover: #1e1e2e;
    
    /* Accent colors - electric cyan/magenta */
    --accent-primary: #00f0ff;
    --accent-secondary: #ff00aa;
    --accent-tertiary: #7b2dff;
    --accent-warm: #ff6b35;
    
    /* Text colors */
    --text-primary: #e8e8f0;
    --text-secondary: #8888a0;
    --text-muted: #555570;
    
    /* UI elements */
    --border-color: #2a2a3a;
    --border-glow: rgba(0, 240, 255, 0.3);
    --shadow-color: rgba(0, 0, 0, 0.5);
    
    /* Gradients */
    --gradient-panel: linear-gradient(145deg, #16161f 0%, #0e0e14 100%);
    --gradient-knob: linear-gradient(145deg, #2a2a3a 0%, #18181f 100%);
    --gradient-accent: linear-gradient(135deg, #00f0ff 0%, #7b2dff 50%, #ff00aa 100%);
    
    /* Fonts */
    --font-display: 'Syne', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-mono);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
}

/* Subtle background pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 0%, rgba(0, 240, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 100%, rgba(123, 45, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(255, 0, 170, 0.03) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

/* Grid overlay for depth */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: -1;
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ========================================
   HEADER
   ======================================== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 2rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    font-size: 1.75rem;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: pulse-glow 3s infinite ease-in-out;
}

@keyframes pulse-glow {
    0%, 100% { filter: drop-shadow(0 0 5px rgba(0, 240, 255, 0.5)); }
    50% { filter: drop-shadow(0 0 15px rgba(0, 240, 255, 0.8)); }
}

.logo h1 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 0.2em;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    padding-left: 1rem;
    border-left: 1px solid var(--border-color);
}

.signal-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border-radius: 2rem;
    border: 1px solid var(--border-color);
}

.signal-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: signal-pulse 2s infinite;
}

@keyframes signal-pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 5px var(--accent-primary); }
    50% { opacity: 0.5; box-shadow: 0 0 15px var(--accent-primary); }
}

.signal-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ========================================
   MAIN CONTENT
   ======================================== */
.main-content {
    flex: 1;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* ========================================
   AUDIO INPUT SECTION
   ======================================== */
.audio-input-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.input-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--gradient-panel);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.upload-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.5rem;
    background: transparent;
    border: 2px solid var(--accent-primary);
    color: var(--accent-primary);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.upload-btn:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.3);
    transform: translateY(-2px);
}

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

.file-name {
    flex: 1;
    color: var(--text-secondary);
    font-size: 0.875rem;
    padding: 0.75rem 1rem;
    background: var(--bg-primary);
    border-radius: 6px;
    border: 1px solid var(--border-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-name.loaded {
    color: var(--accent-primary);
    border-color: rgba(0, 240, 255, 0.3);
}

/* Waveform Section */
.waveform-section {
    margin-bottom: 0.75rem;
}

.waveform-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.waveform-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.render-preview-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--accent-primary);
    color: var(--accent-primary);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.render-preview-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.render-preview-btn.rendering {
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Waveform Container */
.waveform-container {
    position: relative;
    height: 100px;
    background: var(--gradient-panel);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

#waveformCanvas,
#processedWaveformCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

.waveform-placeholder {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
    pointer-events: none;
}

.time-display {
    position: absolute;
    bottom: 0.5rem;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    padding: 0 1rem;
    font-size: 0.7rem;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
    pointer-events: none;
}

/* Trim Overlay */
.trim-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

/* Trim Regions (shaded excluded areas) */
.trim-region {
    position: absolute;
    top: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    pointer-events: none;
    transition: width 0.05s ease;
}

.trim-region-start {
    left: 0;
    width: 0;
    border-right: 1px solid var(--accent-secondary);
}

.trim-region-end {
    right: 0;
    width: 0;
    border-left: 1px solid var(--accent-secondary);
}

/* Trim Handles */
.trim-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 16px;
    cursor: ew-resize;
    pointer-events: auto;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.trim-handle-start {
    left: 0;
    transform: translateX(-50%);
}

.trim-handle-end {
    right: 0;
    transform: translateX(50%);
}

.trim-handle-bar {
    width: 4px;
    height: 60%;
    background: var(--accent-secondary);
    border-radius: 2px;
    box-shadow: 0 0 10px var(--accent-secondary);
    transition: var(--transition-fast);
}

.trim-handle:hover .trim-handle-bar {
    background: var(--accent-primary);
    box-shadow: 0 0 15px var(--accent-primary);
    transform: scaleY(1.1);
}

.trim-handle.dragging .trim-handle-bar {
    background: var(--accent-primary);
    box-shadow: 0 0 20px var(--accent-primary);
    transform: scaleY(1.2);
}

/* Trim Info Bar */
.trim-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.75rem;
}

.trim-info-label {
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

#trimDuration {
    color: var(--accent-primary);
    font-variant-numeric: tabular-nums;
}

.reset-trim-btn {
    margin-left: auto;
    padding: 0.35rem 0.75rem;
    background: transparent;
    border: 1px solid var(--text-muted);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

/* ========================================
   EFFECTS SECTION
   ======================================== */
.effects-section {
    flex: 1;
}

.effects-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.effects-header h2 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.05em;
}

.reset-all-btn {
    padding: 0.5rem 1rem;
    background: transparent;
    border: 1px solid var(--text-muted);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

/* Effects Grid */
.effects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

/* Effect Panel */
.effect-panel {
    background: var(--gradient-panel);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.effect-panel:hover {
    border-color: rgba(0, 240, 255, 0.3);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.effect-panel.active {
    border-color: var(--accent-primary);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.15);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--border-color);
}

.panel-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.panel-icon {
    font-size: 1.25rem;
    color: var(--accent-primary);
    opacity: 0.8;
}

.effect-panel.active .panel-icon {
    opacity: 1;
    text-shadow: 0 0 10px var(--accent-primary);
}

.panel-title h3 {
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    width: 44px;
    height: 24px;
    cursor: pointer;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    inset: 0;
    background: var(--bg-primary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: var(--transition-smooth);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    left: 2px;
    top: 2px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: var(--transition-smooth);
}

.toggle-switch input:checked + .toggle-slider {
    background: rgba(0, 240, 255, 0.2);
    border-color: var(--accent-primary);
}

.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(20px);
    background: var(--accent-primary);
    box-shadow: 0 0 10px var(--accent-primary);
}

/* Panel Content */
.panel-content {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.effect-description {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-align: center;
    padding: 1rem;
}

/* Knob Group */
.knob-group {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

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

/* Knob */
.knob {
    width: 56px;
    height: 56px;
    background: var(--gradient-knob);
    border-radius: 50%;
    border: 2px solid var(--border-color);
    cursor: pointer;
    position: relative;
    transition: var(--transition-fast);
}

.knob:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.2);
}

.knob:active {
    transform: scale(0.98);
}

.knob-inner {
    position: absolute;
    inset: 4px;
    background: radial-gradient(circle at 30% 30%, #3a3a4a, #1a1a24);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.knob-indicator {
    position: absolute;
    width: 3px;
    height: 12px;
    background: var(--accent-primary);
    border-radius: 2px;
    top: 6px;
    left: 50%;
    transform-origin: bottom center;
    transform: translateX(-50%);
    box-shadow: 0 0 8px var(--accent-primary);
}

.knob-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.knob-value {
    font-size: 0.75rem;
    color: var(--accent-primary);
    font-variant-numeric: tabular-nums;
}

/* Select Group */
.select-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.select-group label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.select-group select {
    flex: 1;
    padding: 0.5rem 0.75rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%238888a0' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2rem;
}

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

.select-group select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Checkbox Group */
.checkbox-group {
    display: flex;
    justify-content: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem 0.75rem;
    background: var(--bg-primary);
    border-radius: 6px;
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

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

.checkbox-label input {
    width: 16px;
    height: 16px;
    accent-color: var(--accent-primary);
}

/* ========================================
   PLAYBACK SECTION
   ======================================== */
.playback-section {
    padding: 1.5rem 2rem;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    position: sticky;
    bottom: 0;
    backdrop-filter: blur(10px);
}

.playback-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* Transport Controls */
.transport-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.transport-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-fast);
}

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

.transport-btn:active {
    transform: scale(0.95);
}

.transport-btn.play-btn {
    width: 56px;
    height: 56px;
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--bg-primary);
    border-radius: 50%;
}

.transport-btn.play-btn:hover {
    background: #33f4ff;
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.5);
    transform: scale(1.05);
}

.transport-btn.play-btn:active {
    transform: scale(0.98);
}

.transport-btn.active {
    background: rgba(0, 240, 255, 0.1);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* Volume Control */
.volume-control {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.volume-control svg {
    color: var(--text-secondary);
    flex-shrink: 0;
}

.volume-control input[type="range"] {
    width: 120px;
    height: 4px;
    background: var(--bg-primary);
    border-radius: 2px;
    appearance: none;
    cursor: pointer;
}

.volume-control input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 14px;
    height: 14px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

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

#volumeValue {
    font-size: 0.75rem;
    color: var(--text-secondary);
    min-width: 35px;
    text-align: right;
}

/* Save Controls */
.save-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.save-controls select {
    padding: 0.625rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    border-radius: 6px;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%238888a0' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2rem;
}

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

.save-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: linear-gradient(135deg, var(--accent-tertiary) 0%, var(--accent-secondary) 100%);
    border: none;
    color: white;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.save-btn:hover {
    box-shadow: 0 0 30px rgba(123, 45, 255, 0.5);
    transform: translateY(-2px);
}

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

.save-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Processing Indicator */
.processing-indicator {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 2rem 3rem;
    background: var(--bg-secondary);
    border: 1px solid var(--accent-primary);
    border-radius: 12px;
    box-shadow: 0 0 50px rgba(0, 240, 255, 0.3);
    z-index: 1000;
}

.processing-indicator.active {
    display: flex;
}

.processing-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.processing-indicator span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 1024px) {
    .main-content {
        padding: 1.5rem;
    }
    
    .effects-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .header {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
    }
    
    .logo {
        flex-direction: column;
        text-align: center;
    }
    
    .tagline {
        border-left: none;
        padding-left: 0;
        padding-top: 0.5rem;
        border-top: 1px solid var(--border-color);
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .input-container {
        flex-direction: column;
    }
    
    .upload-btn {
        width: 100%;
        justify-content: center;
    }
    
    .file-name {
        width: 100%;
        text-align: center;
    }
    
    .playback-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .volume-control {
        width: 100%;
        justify-content: center;
    }
    
    .save-controls {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .effects-grid {
        grid-template-columns: 1fr;
    }
    
    .knob-group {
        gap: 1rem;
    }
    
    .knob {
        width: 48px;
        height: 48px;
    }
    
    .transport-btn.play-btn {
        width: 48px;
        height: 48px;
    }
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.effect-panel {
    animation: fadeIn 0.5s ease forwards;
}

.effect-panel:nth-child(1) { animation-delay: 0.05s; }
.effect-panel:nth-child(2) { animation-delay: 0.1s; }
.effect-panel:nth-child(3) { animation-delay: 0.15s; }
.effect-panel:nth-child(4) { animation-delay: 0.2s; }
.effect-panel:nth-child(5) { animation-delay: 0.25s; }
.effect-panel:nth-child(6) { animation-delay: 0.3s; }
.effect-panel:nth-child(7) { animation-delay: 0.35s; }
.effect-panel:nth-child(8) { animation-delay: 0.4s; }
.effect-panel:nth-child(9) { animation-delay: 0.45s; }
.effect-panel:nth-child(10) { animation-delay: 0.5s; }
.effect-panel:nth-child(11) { animation-delay: 0.55s; }
.effect-panel:nth-child(12) { animation-delay: 0.6s; }
.effect-panel:nth-child(13) { animation-delay: 0.65s; }
.effect-panel:nth-child(14) { animation-delay: 0.7s; }
.effect-panel:nth-child(15) { animation-delay: 0.75s; }
.effect-panel:nth-child(16) { animation-delay: 0.8s; }

/* ========================================
   WIDE EFFECT PANELS (EQ, Time Stretch)
   ======================================== */
.effect-panel-wide {
    grid-column: span 2;
}

@media (max-width: 768px) {
    .effect-panel-wide {
        grid-column: span 1;
    }
}

/* ========================================
   EQ PANEL
   ======================================== */
.eq-visualizer {
    height: 80px;
    background: var(--bg-primary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    margin-bottom: 1rem;
}

#eqCanvas {
    width: 100%;
    height: 100%;
}

.eq-bands {
    display: flex;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.eq-band {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
}

.eq-slider {
    -webkit-appearance: slider-vertical;
    appearance: slider-vertical;
    width: 24px;
    height: 100px;
    background: transparent;
    cursor: pointer;
}

.eq-slider::-webkit-slider-track {
    width: 4px;
    background: linear-gradient(to top, var(--accent-primary), var(--accent-secondary));
    border-radius: 2px;
}

.eq-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--text-primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

.eq-slider::-moz-range-track {
    width: 4px;
    background: linear-gradient(to top, var(--accent-primary), var(--accent-secondary));
    border-radius: 2px;
}

.eq-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--text-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
}

.eq-freq {
    font-size: 0.6rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: center;
}

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

.eq-presets {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.eq-preset-btn {
    padding: 0.4rem 0.75rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.eq-preset-btn.active {
    background: rgba(0, 240, 255, 0.1);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* ========================================
   TIME STRETCH PANEL
   ======================================== */
.stretch-container {
    margin-bottom: 1.5rem;
}

.stretch-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 1rem;
}

.stretch-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stretch-duration {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.stretch-slider {
    width: 100%;
    height: 8px;
    background: var(--bg-primary);
    border-radius: 4px;
    appearance: none;
    cursor: pointer;
}

.stretch-slider::-webkit-slider-track {
    height: 8px;
    background: linear-gradient(to right, 
        var(--accent-secondary) 0%, 
        var(--accent-primary) 33%, 
        var(--accent-primary) 66%, 
        var(--accent-tertiary) 100%);
    border-radius: 4px;
}

.stretch-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--text-primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
}

.stretch-slider::-moz-range-track {
    height: 8px;
    background: linear-gradient(to right, 
        var(--accent-secondary) 0%, 
        var(--accent-primary) 33%, 
        var(--accent-primary) 66%, 
        var(--accent-tertiary) 100%);
    border-radius: 4px;
}

.stretch-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--text-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
}

.stretch-marks {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    font-size: 0.65rem;
    color: var(--text-muted);
}

.stretch-options {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.stretch-modes {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stretch-mode-btn {
    padding: 0.5rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
    text-align: left;
}

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

.stretch-mode-btn.active {
    background: rgba(123, 45, 255, 0.15);
    border-color: var(--accent-tertiary);
    color: var(--accent-tertiary);
}

/* ========================================
   PERCUSSION SHAPER PANEL
   ======================================== */
.percussion-presets {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
    .percussion-presets {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 480px) {
    .percussion-presets {
        grid-template-columns: repeat(2, 1fr);
    }
}

.percussion-preset-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    padding: 0.75rem 0.5rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.percussion-preset-btn .preset-icon {
    font-size: 1.25rem;
    line-height: 1;
}

.percussion-preset-btn:hover {
    border-color: var(--accent-warm);
    color: var(--accent-warm);
    transform: translateY(-2px);
}

.percussion-preset-btn.active {
    background: rgba(255, 107, 53, 0.15);
    border-color: var(--accent-warm);
    color: var(--accent-warm);
    box-shadow: 0 0 15px rgba(255, 107, 53, 0.3);
}

.percussion-controls {
    padding: 1rem;
    background: var(--bg-primary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.percussion-controls .knob-group {
    justify-content: space-around;
}

/* ========================================
   NOTE SELECTOR PANEL
   ======================================== */
.octave-selector {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    justify-content: center;
}

.octave-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.octave-buttons {
    display: flex;
    gap: 0.35rem;
}

.octave-btn {
    width: 36px;
    height: 32px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
}

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

.octave-btn.active {
    background: rgba(0, 240, 255, 0.15);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
}

/* Piano Container */
.piano-container {
    padding: 1rem;
    background: var(--bg-primary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

.piano-keys {
    position: relative;
    display: flex;
    height: 120px;
    gap: 2px;
}

/* White Keys */
.white-key {
    flex: 1;
    height: 100%;
    background: linear-gradient(to bottom, #ffffff 0%, #e8e8e8 100%);
    border: 1px solid #cccccc;
    border-radius: 0 0 6px 6px;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
    padding-bottom: 8px;
    position: relative;
    z-index: 1;
}

.white-key:hover {
    background: linear-gradient(to bottom, #f0f8ff 0%, #d0e8ff 100%);
}

.white-key:active,
.white-key.active {
    background: linear-gradient(to bottom, var(--accent-primary) 0%, #00c8d8 100%);
    box-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.2);
}

.white-key .key-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    color: #333;
}

.white-key.active .key-label {
    color: var(--bg-primary);
}

/* Black Keys */
.black-key {
    position: absolute;
    top: 0;
    width: 28px;
    height: 70%;
    background: linear-gradient(to bottom, #333 0%, #111 100%);
    border: 1px solid #000;
    border-radius: 0 0 4px 4px;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
    padding-bottom: 6px;
    z-index: 2;
}

.black-key:hover {
    background: linear-gradient(to bottom, #444 0%, #222 100%);
}

.black-key:active,
.black-key.active {
    background: linear-gradient(to bottom, var(--accent-secondary) 0%, #cc0088 100%);
    box-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.4);
}

.black-key .key-label {
    font-family: var(--font-mono);
    font-size: 0.55rem;
    font-weight: 600;
    color: #aaa;
}

.black-key.active .key-label {
    color: white;
}

/* Note Display */
.note-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.note-display-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.note-display-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.note-display-shift {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Preserve Length Section */
.preserve-length-section {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.preserve-length-toggle {
    justify-content: center;
    background: transparent;
    border: none;
    margin-bottom: 0.5rem;
}

.preserve-length-info {
    font-size: 0.65rem;
    color: var(--text-muted);
    margin: 0;
}

/* Multiple checkboxes in a row */
.panel-content .checkbox-group {
    flex-wrap: wrap;
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

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

/* Selection */
::selection {
    background: rgba(0, 240, 255, 0.3);
    color: var(--text-primary);
}