/* Aura Studio - Professional Music Production Software */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --primary-color: #6c5ce7;
    --primary-dark: #5b4fcf;
    --secondary-color: #00cec9;
    --accent-color: #fd79a8;
    --success-color: #00b894;
    --warning-color: #fdcb6e;
    --danger-color: #d63031;
    --info-color: #0984e3;
    
    /* UI Colors */
    --dark-bg: #0f0f23;
    --dark-panel: #1a1a2e;
    --dark-surface: #2d2d44;
    --dark-border: #3d3d5c;
    --light-text: #ffffff;
    --medium-text: #b0b0d0;
    --muted-text: #7a7a9c;
    
    /* Timeline Colors */
    --track-1: #6c5ce7;
    --track-2: #00cec9;
    --track-3: #fd79a8;
    --track-4: #00b894;
    --track-5: #fdcb6e;
    
    /* Effects */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--dark-bg), var(--dark-panel));
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity var(--transition-slow);
}

.loading-content {
    text-align: center;
    max-width: 400px;
    padding: 2rem;
}

.audio-animation {
    position: relative;
    width: 200px;
    height: 100px;
    margin: 0 auto 2rem;
}

.sound-wave {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 100%;
}

.wave-bar {
    width: 6px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 3px;
    animation: wave 1.5s infinite ease-in-out;
}

.wave-bar:nth-child(2) { animation-delay: 0.1s; }
.wave-bar:nth-child(3) { animation-delay: 0.2s; }
.wave-bar:nth-child(4) { animation-delay: 0.3s; }
.wave-bar:nth-child(5) { animation-delay: 0.4s; }
.wave-bar:nth-child(6) { animation-delay: 0.5s; }
.wave-bar:nth-child(7) { animation-delay: 0.6s; }
.wave-bar:nth-child(8) { animation-delay: 0.7s; }

@keyframes wave {
    0%, 100% { height: 20px; }
    50% { height: 80px; }
}

.ai-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2.5rem;
    color: var(--secondary-color);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.7; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: var(--dark-surface);
    border-radius: 3px;
    margin-top: 2rem;
    overflow: hidden;
}

.progress {
    width: 30%;
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 3px;
    animation: progress 2s infinite;
}

@keyframes progress {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(400%); }
}

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

.hidden {
    display: none !important;
}

/* Navigation */
.app-nav {
    background: var(--dark-panel);
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    border-bottom: 1px solid var(--dark-border);
    box-shadow: var(--shadow-sm);
    z-index: 100;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 2rem;
}

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

.nav-brand i {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.nav-brand h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-subtitle {
    font-size: 0.8rem;
    color: var(--medium-text);
    margin-left: 0.5rem;
}

.nav-controls {
    display: flex;
    gap: 0.5rem;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius-sm);
    color: var(--medium-text);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.nav-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.transport-controls {
    display: flex;
    gap: 0.5rem;
}

.transport-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    color: var(--medium-text);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.transport-btn:hover {
    background: var(--dark-surface);
    color: white;
}

.play-btn {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.play-btn:hover {
    background: var(--primary-dark);
}

.bpm-display {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--dark-surface);
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius-sm);
}

.bpm-display i {
    color: var(--secondary-color);
}

.bpm-display input {
    width: 50px;
    background: transparent;
    border: none;
    color: white;
    font-family: 'Roboto Mono', monospace;
    font-size: 1rem;
    text-align: center;
}

.bpm-display input:focus {
    outline: none;
}

.master-volume {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100px;
}

.master-volume i {
    color: var(--accent-color);
}

.master-volume input {
    flex: 1;
}

.user-menu {
    position: relative;
}

.user-avatar {
    width: 36px;
    height: 36px;
    background: var(--dark-surface);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--medium-text);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.user-avatar:hover {
    background: var(--primary-color);
    color: white;
}

.user-dropdown {
    position: absolute;
    top: 45px;
    right: 0;
    background: var(--dark-panel);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    width: 200px;
    padding: 1rem;
    z-index: 1000;
}

.user-info {
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--dark-border);
    margin-bottom: 0.5rem;
}

.user-name {
    display: block;
    font-weight: 600;
}

.user-role {
    display: block;
    font-size: 0.8rem;
    color: var(--medium-text);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.75rem;
    background: none;
    border: none;
    color: var(--medium-text);
    text-align: left;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--dark-surface);
    color: white;
}

/* Main Workspace */
.app-main {
    flex: 1;
    display: flex;
    overflow: hidden;
}

/* Sidebars */
.sidebar {
    width: 280px;
    background: var(--dark-panel);
    border-right: 1px solid var(--dark-border);
    overflow-y: auto;
    padding: 1rem;
}

.right-sidebar {
    border-right: none;
    border-left: 1px solid var(--dark-border);
}

.sidebar-section {
    margin-bottom: 2rem;
}

.sidebar-section h3 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--medium-text);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sidebar-section h3 i {
    color: var(--secondary-color);
}

/* AI Controls */
.ai-controls {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.ai-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius-sm);
    color: var(--medium-text);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.ai-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.ai-btn i {
    font-size: 1rem;
}

/* AI Chat */
.ai-chat {
    background: var(--dark-surface);
    border-radius: var(--border-radius-md);
    overflow: hidden;
}

.ai-chat-header {
    background: var(--dark-panel);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.ai-chat-messages {
    height: 200px;
    padding: 1rem;
    overflow-y: auto;
}

.ai-message {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.ai-avatar {
    width: 32px;
    height: 32px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.message-content {
    background: var(--dark-panel);
    padding: 0.75rem;
    border-radius: var(--border-radius-md);
    font-size: 0.9rem;
    line-height: 1.4;
}

.ai-chat-input {
    display: flex;
    padding: 0.75rem;
    border-top: 1px solid var(--dark-border);
}

.ai-chat-input input {
    flex: 1;
    background: var(--dark-panel);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius-sm);
    padding: 0.5rem 0.75rem;
    color: white;
    font-size: 0.9rem;
}

.ai-chat-input input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.ai-chat-input button {
    background: var(--primary-color);
    border: none;
    border-radius: var(--border-radius-sm);
    color: white;
    width: 36px;
    margin-left: 0.5rem;
    cursor: pointer;
}

/* Effects Rack */
.effects-rack {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}

.effect-slot {
    background: var(--dark-surface);
    border: 2px dashed var(--dark-border);
    border-radius: var(--border-radius-sm);
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.effect-slot:hover {
    border-color: var(--primary-color);
    background: var(--dark-panel);
}

.effect-slot i {
    font-size: 1.2rem;
    color: var(--secondary-color);
}

.effect-slot span {
    font-size: 0.8rem;
    color: var(--medium-text);
}

/* Drum Machine */
.drum-pad-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
}

.drum-pad {
    aspect-ratio: 1;
    background: var(--dark-surface);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

.drum-pad:hover {
    background: var(--primary-color);
    transform: scale(1.05);
}

.drum-pad.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
    transform: scale(0.95);
}

.drum-pad span {
    font-size: 0.8rem;
    font-weight: 500;
}

/* Timeline Area */
.timeline-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.timeline-header {
    background: var(--dark-panel);
    border-bottom: 1px solid var(--dark-border);
    padding: 0.5rem 1rem;
}

.track-headers {
    display: flex;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.track-header {
    width: 150px;
    background: var(--dark-surface);
    border-radius: var(--border-radius-sm);
    padding: 0.5rem 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.track-header:hover {
    background: var(--primary-color);
}

.track-header i {
    color: var(--secondary-color);
}

.track-header.master {
    background: var(--dark-panel);
    border: 1px solid var(--dark-border);
}

.timeline-ruler {
    background: var(--dark-surface);
    border-radius: var(--border-radius-sm);
    padding: 0.25rem 0.5rem;
}

.ruler-markers {
    display: flex;
    justify-content: space-between;
    font-family: 'Roboto Mono', monospace;
    font-size: 0.8rem;
    color: var(--medium-text);
}

/* Timeline Tracks */
.timeline-tracks {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    position: relative;
}

.track {
    display: flex;
    height: 80px;
    margin-bottom: 0.5rem;
    background: var(--dark-panel);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--dark-border);
    position: relative;
}

.track-controls {
    width: 150px;
    padding: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    align-content: center;
    gap: 0.25rem;
    border-right: 1px solid var(--dark-border);
}

.track-controls .track-mute,
.track-controls .track-solo {
    width: 28px;
    height: 28px;
}

.track-controls .track-volume {
    width: 60px;
}

.track-controls .track-input {
    width: 100%;
    font-size: 0.7rem;
    padding: 0.15rem 0.3rem;
}

.track-mute,
.track-solo {
    width: 32px;
    height: 32px;
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius-sm);
    color: var(--medium-text);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.track-mute:hover,
.track-solo:hover {
    background: var(--dark-surface);
    color: white;
}

.track-mute.active {
    background: var(--danger-color);
    border-color: var(--danger-color);
    color: white;
}

.track-solo.active {
    background: var(--warning-color);
    border-color: var(--warning-color);
    color: var(--dark-bg);
}

.track-volume {
    width: 100%;
}

.track-input {
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius-sm);
    color: var(--medium-text);
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
}

.track-clips {
    flex: 1;
    position: relative;
    overflow-x: auto;
    padding: 0.5rem;
}

.audio-clip {
    position: absolute;
    height: calc(100% - 1rem);
    background: var(--primary-color);
    border-radius: var(--border-radius-sm);
    cursor: move;
    user-select: none;
    border: 2px solid transparent;
    transition: all var(--transition-fast);
}

.audio-clip:hover {
    border-color: white;
    box-shadow: var(--shadow-md);
}

.audio-clip[data-track="1"] { background: var(--track-1); }
.audio-clip[data-track="2"] { background: var(--track-2); }
.audio-clip[data-track="3"] { background: var(--track-3); }
.audio-clip[data-track="4"] { background: var(--track-4); }
.audio-clip[data-track="5"] { background: var(--track-5); }

.clip-content {
    padding: 0.5rem;
    height: 100%;
    display: flex;
    align-items: center;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Playhead */
.playhead {
    position: absolute;
    top: 0;
    left: 150px;
    width: 2px;
    height: 100%;
    background: var(--accent-color);
    pointer-events: none;
    z-index: 10;
}

.playhead::before {
    content: '';
    position: absolute;
    top: 0;
    left: -4px;
    width: 10px;
    height: 10px;
    background: var(--accent-color);
    border-radius: 50%;
}

/* Mixer */
.mixer-channels {
    display: flex;
    gap: 1rem;
    overflow-x: auto;
    padding: 0.5rem 0;
}

.mixer-channel {
    width: 60px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.channel-label {
    font-size: 0.8rem;
    color: var(--medium-text);
    text-align: center;
}

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

.vertical-fader {
    writing-mode: vertical-lr;
    direction: rtl;
    height: 120px;
    width: 20px;
    background: var(--dark-surface);
    border-radius: 10px;
    -webkit-appearance: slider-vertical;
}

.channel-meter {
    width: 8px;
    height: 60px;
    background: var(--dark-surface);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.meter-level {
    position: absolute;
    bottom: 0;
    width: 100%;
    background: linear-gradient(to top, var(--success-color), var(--warning-color));
    transition: height 0.1s;
}

.channel-controls {
    display: flex;
    gap: 0.25rem;
}

.channel-mute,
.channel-solo {
    width: 24px;
    height: 24px;
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius-sm);
    color: var(--medium-text);
    font-size: 0.7rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.channel-mute:hover,
.channel-solo:hover {
    background: var(--dark-surface);
    color: white;
}

.channel-mute.active {
    background: var(--danger-color);
    border-color: var(--danger-color);
    color: white;
}

.channel-solo.active {
    background: var(--warning-color);
    border-color: var(--warning-color);
    color: var(--dark-bg);
}

/* Active Effects */
.active-effects {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.effect-panel {
    background: var(--dark-surface);
    border-radius: var(--border-radius-md);
    padding: 0.75rem;
    border-left: 3px solid var(--secondary-color);
}

.effect-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.effect-header i {
    color: var(--secondary-color);
}

.effect-remove {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--medium-text);
    cursor: pointer;
    font-size: 0.8rem;
}

.effect-remove:hover {
    color: var(--danger-color);
}

.effect-controls {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.eq-band,
.effect-param {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
}

.eq-band span,
.effect-param span {
    color: var(--medium-text);
    min-width: 60px;
}

.eq-slider,
.effect-param input {
    width: 120px;
}

/* Analyzer */
.analyzer-display {
    background: var(--dark-surface);
    border-radius: var(--border-radius-md);
    padding: 1rem;
}

.spectrum-analyzer {
    height: 100px;
    background: var(--dark-bg);
    border-radius: var(--border-radius-sm);
    margin-bottom: 1rem;
    display: flex;
    align-items: flex-end;
    gap: 2px;
    padding: 0.5rem;
}

.spectrum-bar {
    flex: 1;
    background: linear-gradient(to top, var(--secondary-color), var(--primary-color));
    border-radius: 2px 2px 0 0;
    min-height: 2px;
}

.analyzer-info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.analyzer-reading {
    background: var(--dark-panel);
    border-radius: var(--border-radius-sm);
    padding: 0.5rem;
    font-size: 0.8rem;
}

.analyzer-reading span:first-child {
    color: var(--medium-text);
    margin-right: 0.25rem;
}

/* Footer */
.app-footer {
    background: var(--dark-panel);
    border-top: 1px solid var(--dark-border);
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.footer-left,
.footer-center,
.footer-right {
    flex: 1;
}

.recording-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.record-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--danger-color);
    border: none;
    border-radius: var(--border-radius-sm);
    color: white;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.record-btn:hover {
    background: #c53030;
}

.recording-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.recording-indicator {
    width: 12px;
    height: 12px;
    background: var(--danger-color);
    border-radius: 50%;
    animation: recording 1s infinite;
}

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

.input-monitor {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.input-meter {
    flex: 1;
    height: 6px;
    background: var(--dark-surface);
    border-radius: 3px;
    overflow: hidden;
}

.input-meter .meter-level {
    background: linear-gradient(90deg, var(--success-color), var(--warning-color));
}

.ai-generation {
    text-align: center;
}

.ai-generation h4 {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.ai-gen-controls {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}

.ai-gen-controls select {
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius-sm);
    color: var(--medium-text);
    padding: 0.5rem;
    font-size: 0.9rem;
    min-width: 120px;
}

.project-stats {
    display: flex;
    justify-content: flex-end;
    gap: 1.5rem;
}

.stat {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--medium-text);
}

.stat i {
    color: var(--secondary-color);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.modal-content {
    background: var(--dark-panel);
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--dark-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.2rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--medium-text);
    font-size: 1.2rem;
    cursor: pointer;
}

.modal-close:hover {
    color: white;
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
}

.ai-gen-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.ai-option {
    background: var(--dark-surface);
    border-radius: var(--border-radius-md);
    padding: 1.5rem;
    text-align: center;
    border: 2px solid transparent;
    transition: all var(--transition-fast);
}

.ai-option:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.ai-option i {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.ai-option h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.ai-option p {
    font-size: 0.9rem;
    color: var(--medium-text);
    margin-bottom: 1rem;
    line-height: 1.4;
}

/* Buttons */
.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background: #c53030;
}

/* Notifications */
.notifications-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 3000;
}

.notification {
    background: var(--dark-panel);
    border-radius: var(--border-radius-md);
    padding: 1rem;
    margin-bottom: 0.5rem;
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--primary-color);
    animation: slideIn 0.3s ease;
    max-width: 300px;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.notification i {
    color: var(--primary-color);
    font-size: 1.2rem;
    margin-top: 0.1rem;
}

.notification-content {
    flex: 1;
}

.notification-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.notification-message {
    font-size: 0.9rem;
    color: var(--medium-text);
}

/* Range Input Styling */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-track {
    background: var(--dark-surface);
    height: 6px;
    border-radius: 3px;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    height: 16px;
    width: 16px;
    background: var(--primary-color);
    border-radius: 50%;
    margin-top: -5px;
}

input[type="range"]::-moz-range-track {
    background: var(--dark-surface);
    height: 6px;
    border-radius: 3px;
}

input[type="range"]::-moz-range-thumb {
    height: 16px;
    width: 16px;
    background: var(--primary-color);
    border-radius: 50%;
    border: none;
}

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

::-webkit-scrollbar-track {
    background: var(--dark-surface);
    border-radius: 4px;
}

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

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

/* Context Menu (generated by utils.js) */
.context-menu {
    position: fixed;
    background: var(--dark-panel);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius-md);
    padding: 0.5rem 0;
    min-width: 180px;
    box-shadow: var(--shadow-lg);
    z-index: 5000;
}

.context-menu-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    color: var(--medium-text);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.context-menu-item:hover {
    background: var(--primary-color);
    color: white;
}

.context-menu-item i {
    width: 16px;
    text-align: center;
    font-size: 0.8rem;
}

.context-menu-divider {
    height: 1px;
    background: var(--dark-border);
    margin: 0.25rem 0;
}

/* Tooltips (generated by utils.js) */
.tooltip {
    position: fixed;
    background: var(--dark-panel);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius-sm);
    padding: 0.35rem 0.6rem;
    font-size: 0.75rem;
    color: var(--medium-text);
    box-shadow: var(--shadow-sm);
    z-index: 6000;
    pointer-events: none;
    white-space: nowrap;
}

/* Typing Indicator (AI chat) */
.typing-dots {
    display: flex;
    gap: 4px;
    padding: 0.25rem 0;
}

.typing-dots span {
    width: 6px;
    height: 6px;
    background: var(--medium-text);
    border-radius: 50%;
    animation: typingBounce 1.2s infinite;
}

.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-4px); opacity: 1; }
}

/* Resize Handles (generated by utils.js) */
.resize-handle {
    position: absolute;
    top: 0;
    width: 4px;
    height: 100%;
    cursor: col-resize;
    z-index: 50;
    transition: background var(--transition-fast);
}

.resize-handle:hover {
    background: var(--primary-color);
}

.resize-right { right: 0; }
.resize-left { left: 0; }

/* Selected Track */
.track.selected {
    border-color: var(--primary-color);
    box-shadow: inset 0 0 0 1px var(--primary-color);
}

/* Clip Fades */
.audio-clip.fade-in {
    mask-image: linear-gradient(to right, transparent, black 30%);
    -webkit-mask-image: linear-gradient(to right, transparent, black 30%);
}

.audio-clip.fade-out {
    mask-image: linear-gradient(to left, transparent, black 30%);
    -webkit-mask-image: linear-gradient(to left, transparent, black 30%);
}

.audio-clip.reversed {
    filter: hue-rotate(180deg);
}

/* Drag & Drop */
.app-container.drag-over {
    outline: 2px dashed var(--primary-color);
    outline-offset: -4px;
}

/* User message in AI chat */
.user-message .user-avatar {
    background: var(--secondary-color);
}

/* Loop button active */
.transport-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* Record arm active */
.record-btn.active {
    background: var(--danger-color);
    animation: recording 1s infinite;
}

/* Master track waveform fallback */
.track-waveform {
    flex: 1;
    overflow: hidden;
    display: flex;
    align-items: center;
}

/* Responsive Design */
@media (max-width: 1400px) {
    .sidebar {
        width: 240px;
    }
    
    .track-controls {
        width: 120px;
    }
    
    .playhead {
        left: 120px;
    }
}

@media (max-width: 1200px) {
    .app-footer {
        flex-direction: column;
        height: auto;
        gap: 1rem;
        padding: 1rem;
    }
    
    .footer-left,
    .footer-center,
    .footer-right {
        width: 100%;
    }
    
    .project-stats {
        justify-content: center;
    }
}

@media (max-width: 1024px) {
    .sidebar {
        width: 200px;
    }
    
    .track-controls {
        width: 100px;
    }
    
    .playhead {
        left: 100px;
    }
    
    .ai-gen-options {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .app-nav {
        flex-direction: column;
        height: auto;
        padding: 1rem;
        gap: 1rem;
    }
    
    .nav-left,
    .nav-right {
        width: 100%;
        justify-content: center;
    }
    
    .sidebar {
        display: none;
    }
    
    .sidebar.active {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        height: 100%;
        z-index: 1000;
    }
    
    .track-controls {
        width: 80px;
    }
    
    .playhead {
        left: 80px;
    }
}