/* Professional Audio Editor Styles */
:root[data-theme="light"] {
    --bg-color: #f8fafc;
    --container-bg: #ffffff;
    --surface-bg: #f1f5f9;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --secondary-color: #6b7280;
    --success-color: #10b981;
    --success-hover: #059669;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --waveform-color: #3b82f6;
    --waveform-bg: #f8fafc;
    --selection-color: rgba(59, 130, 246, 0.2);
    --playhead-color: #ef4444;
    --transport-bg: #ffffff;
    --sidebar-bg: #f8fafc;
    --panel-bg: #ffffff;
}

:root[data-theme="dark"] {
    --bg-color: #0f172a;
    --container-bg: #1e293b;
    --surface-bg: #334155;
    --text-color: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --primary-color: #60a5fa;
    --primary-hover: #3b82f6;
    --secondary-color: #9ca3af;
    --success-color: #34d399;
    --success-hover: #10b981;
    --error-color: #f87171;
    --warning-color: #fbbf24;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.4);
    --waveform-color: #60a5fa;
    --waveform-bg: #1e293b;
    --selection-color: rgba(96, 165, 250, 0.3);
    --playhead-color: #f87171;
    --transport-bg: #1e293b;
    --sidebar-bg: #0f172a;
    --panel-bg: #1e293b;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    transition: all 0.3s ease;
    overflow-x: hidden;
}

.main-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

.header-left h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--success-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-subtitle {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.view-mode-controls {
    display: flex;
    background: var(--surface-bg);
    border-radius: 8px;
    padding: 0.25rem;
    border: 1px solid var(--border-color);
}

.view-btn {
    padding: 0.5rem 1rem;
    border: none;
    background: transparent;
    color: var(--text-muted);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.875rem;
    font-weight: 500;
}

.view-btn:hover {
    background: var(--container-bg);
    color: var(--text-color);
}

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

/* ========== UPLOAD SECTION ========== */
.upload-section {
    padding: 2rem;
    flex: 1;
}

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 16px;
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--container-bg);
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(59, 130, 246, 0.05);
    transform: translateY(-2px);
}

.upload-content {
    max-width: 400px;
}

.upload-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    filter: grayscale(0.3);
}

.upload-text {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.upload-subtext {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.upload-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow);
}

.upload-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.file-input {
    display: none;
}

/* ========== LOADING ========== */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.loading-content {
    background: var(--container-bg);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    min-width: 300px;
    box-shadow: var(--shadow-lg);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-text {
    font-size: 1.125rem;
    margin-bottom: 1rem;
}

.loading-progress {
    margin-top: 1rem;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--surface-bg);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ========== ERROR MESSAGE ========== */
.error-message {
    background: var(--error-color);
    color: white;
    padding: 1rem 2rem;
    margin: 1rem 2rem;
    border-radius: 8px;
    font-weight: 500;
    text-align: center;
}

/* ========== AUDIO EDITOR ========== */
.audio-editor {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

/* ========== TRANSPORT BAR ========== */
.transport-bar {
    background: var(--transport-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    box-shadow: var(--shadow);
}

.transport-left,
.transport-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.transport-center {
    flex: 1;
    display: flex;
    justify-content: center;
}

.transport-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border-color);
    background: var(--container-bg);
    color: var(--text-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
}

.transport-btn:hover {
    background: var(--surface-bg);
    transform: translateY(-1px);
}

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

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

.btn-icon {
    font-size: 1.125rem;
}

.time-display {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
}

.time-current,
.time-total {
    text-align: center;
}

.time-current label,
.time-total label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.time-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
}

.time-separator {
    font-size: 1.5rem;
    color: var(--text-muted);
}

.volume-control,
.zoom-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.volume-slider {
    width: 80px;
}

.zoom-btn {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    background: var(--container-bg);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.zoom-btn:hover {
    background: var(--surface-bg);
}

.zoom-value,
.volume-value {
    font-size: 0.875rem;
    color: var(--text-muted);
    min-width: 3rem;
    text-align: center;
}

/* ========== EDITOR LAYOUT ========== */
.editor-layout {
    display: flex;
    flex: 1;
    min-height: 0;
}

.left-sidebar,
.right-sidebar {
    width: 280px;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

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

.center-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
    background: var(--container-bg);
}

/* ========== PANELS ========== */
.info-panel,
.tools-panel,
.effects-panel,
.processing-panel {
    background: var(--panel-bg);
    margin: 1rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.info-panel h3,
.tools-panel h3,
.effects-panel h3,
.processing-panel h3 {
    padding: 1rem 1.5rem 0.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-color);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

.info-grid {
    padding: 0 1.5rem 1.5rem;
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.info-row:last-child {
    border-bottom: none;
}

.info-row label {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

.info-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-color);
    font-family: 'SF Mono', Monaco, monospace;
}

/* ========== TOOLS ========== */
.tool-sections {
    padding: 0 1.5rem 1.5rem;
}

.tool-section {
    margin-bottom: 1.5rem;
}

.tool-section:last-child {
    margin-bottom: 0;
}

.tool-section h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tool-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.tool-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    background: var(--container-bg);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    width: 100%;
}

.tool-btn:hover:not(:disabled) {
    background: var(--surface-bg);
    transform: translateY(-1px);
}

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

.tool-icon {
    font-size: 1.125rem;
    width: 1.5rem;
    text-align: center;
}

.tool-text {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-color);
}

/* ========== VISUALIZATION SECTIONS ========== */
.visualization-section {
    flex: 1;
    display: none;
    flex-direction: column;
    min-height: 0;
}

.visualization-section.active {
    display: flex;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--surface-bg);
}

.section-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.waveform-controls,
.spectrum-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.style-select,
.control-btn {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    background: var(--container-bg);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.875rem;
}

.control-btn:hover {
    background: var(--surface-bg);
}

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

/* ========== WAVEFORM ========== */
.waveform-container {
    flex: 1;
    position: relative;
    background: var(--waveform-bg);
    min-height: 200px;
}

.waveform-canvas {
    width: 100%;
    height: 100%;
    cursor: crosshair;
}

.waveform-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.ruler {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 30px;
    background: rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid var(--border-color);
}

/* ========== SPECTRUM ========== */
.spectrum-container {
    flex: 1;
    position: relative;
    background: var(--waveform-bg);
    min-height: 200px;
}

.spectrum-canvas {
    width: 100%;
    height: 100%;
}

.spectrum-info {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.75rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-family: monospace;
}

.freq-info,
.level-info {
    margin-bottom: 0.5rem;
}

.freq-info:last-child,
.level-info:last-child {
    margin-bottom: 0;
}

/* ========== SELECTION BAR ========== */
.selection-bar {
    background: var(--surface-bg);
    border-top: 1px solid var(--border-color);
    padding: 1rem 2rem;
}

.selection-times {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.time-input-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.time-input-group label {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
    min-width: 3rem;
}

.time-input {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    background: var(--container-bg);
    border-radius: 6px;
    font-family: monospace;
    font-size: 0.875rem;
    width: 6rem;
    text-align: center;
}

.time-display {
    font-family: monospace;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-color);
    min-width: 6rem;
    text-align: center;
}

/* ========== EFFECTS ========== */
.effects-chain {
    padding: 0 1.5rem 1rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

.chain-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.chain-header h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-color);
}

.clear-btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    background: var(--error-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.clear-btn:hover {
    background: #dc2626;
}

.effects-list {
    min-height: 100px;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
    color: var(--text-muted);
}

.effects-list:empty::before {
    content: "Drag effects here to build your chain";
    font-size: 0.875rem;
}

.available-effects {
    padding: 0 1.5rem 1.5rem;
}

.available-effects h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.effects-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.effect-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 0.75rem;
    border: 1px solid var(--border-color);
    background: var(--container-bg);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.effect-btn:hover {
    background: var(--surface-bg);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.effect-icon {
    font-size: 1.5rem;
}

.effect-name {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-color);
}

/* ========== PROCESSING ========== */
.processing-tools {
    padding: 0 1.5rem 1.5rem;
}

.process-section {
    margin-bottom: 1.5rem;
}

.process-section:last-child {
    margin-bottom: 0;
}

.process-section h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.process-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}

.process-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.75rem 0.5rem;
    border: 1px solid var(--border-color);
    background: var(--container-bg);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.process-btn:hover {
    background: var(--surface-bg);
    transform: translateY(-1px);
}

.process-btn.full-width {
    grid-column: 1 / -1;
    flex-direction: row;
    justify-content: center;
    gap: 0.5rem;
}

.process-icon {
    font-size: 1.125rem;
}

.process-text {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-color);
}

.analysis-info {
    margin-bottom: 1rem;
}

.analysis-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.analysis-row:last-child {
    border-bottom: none;
}

.analysis-row label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.analysis-row span {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-color);
    font-family: monospace;
}

/* ========== BOTTOM BAR ========== */
.bottom-bar {
    background: var(--transport-bg);
    border-top: 1px solid var(--border-color);
    padding: 1rem 2rem;
    box-shadow: var(--shadow);
}

.export-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.export-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.export-settings {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.setting-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.setting-group label {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
    white-space: nowrap;
}

.export-select {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    background: var(--container-bg);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
}

.export-buttons {
    display: flex;
    gap: 1rem;
}

.export-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
}

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

.export-btn.primary:hover {
    background: var(--success-hover);
    transform: translateY(-1px);
}

.export-btn.secondary {
    background: var(--container-bg);
    color: var(--text-color);
}

.export-btn.secondary:hover {
    background: var(--surface-bg);
}

/* ========== HELP SECTION ========== */
.help-section {
    background: var(--container-bg);
    padding: 3rem 2rem;
    border-top: 1px solid var(--border-color);
}

.help-section h2 {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-color);
}

.help-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.help-item {
    text-align: center;
    padding: 2rem 1rem;
    background: var(--surface-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.help-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.help-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.help-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.help-item p {
    color: var(--text-muted);
    line-height: 1.6;
}

/* ========== MODAL ========== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: var(--container-bg);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    min-width: 400px;
    max-width: 600px;
    max-height: 80vh;
    overflow: hidden;
}

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

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: color 0.2s ease;
}

.modal-close:hover {
    color: var(--text-color);
}

.modal-body {
    padding: 1.5rem;
    max-height: 60vh;
    overflow-y: auto;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.modal-btn {
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
}

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

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

.modal-btn.secondary {
    background: var(--container-bg);
    color: var(--text-color);
}

.modal-btn.secondary:hover {
    background: var(--surface-bg);
}

/* ========== THEME TOGGLE ========== */
.theme-toggle {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    background: var(--container-bg);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1.125rem;
}

.theme-toggle:hover {
    background: var(--surface-bg);
    transform: scale(1.1);
}

/* ========== UTILITIES ========== */
.hidden {
    display: none !important;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1200px) {
    .left-sidebar,
    .right-sidebar {
        width: 240px;
    }
    
    .editor-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .header-right {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .editor-layout {
        flex-direction: column;
    }
    
    .left-sidebar,
    .right-sidebar {
        width: 100%;
        min-height: 200px;
    }
    
    .transport-bar {
        flex-direction: column;
        gap: 1rem;
    }
    
    .export-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .export-settings {
        flex-direction: column;
        gap: 1rem;
    }
    
    .help-grid {
        grid-template-columns: 1fr;
    }
    
    .effects-grid {
        grid-template-columns: 1fr;
    }
    
    .process-buttons {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .main-container {
        padding: 0;
    }
    
    .editor-header,
    .transport-bar,
    .bottom-bar {
        padding: 1rem;
    }
    
    .upload-section {
        padding: 1rem;
    }
    
    .upload-area {
        padding: 2rem 1rem;
        min-height: 200px;
    }
    
    .view-mode-controls {
        flex-direction: column;
        width: 100%;
    }
    
    .selection-times {
        flex-direction: column;
        gap: 1rem;
    }
}

/* ========== ANIMATIONS ========== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.audio-editor {
    animation: fadeIn 0.5s ease-out;
}

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 8px;
    font-weight: 500;
}

.upload-subtext {
    color: var(--secondary-color);
    font-size: 0.9rem;
}

.file-input {
    display: none;
}

/* Loading */
.loading {
    text-align: center;
    padding: 40px 20px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Audio Editor Sections */
.audio-editor {
    display: block;
}

.audio-info-section,
.waveform-section,
.controls-section,
.selection-section,
.tools-section,
.history-section,
.export-section {
    background: var(--bg-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

.audio-info-section h3,
.waveform-section h3,
.controls-section h3,
.selection-section h3,
.tools-section h3,
.export-section h3 {
    margin-bottom: 15px;
    color: var(--text-color);
    font-size: 1.2rem;
    font-weight: 600;
}

/* Info Grid */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.info-item label {
    font-weight: 500;
    color: var(--secondary-color);
    font-size: 0.9rem;
}

.info-item span {
    font-weight: 600;
    color: var(--text-color);
}

/* Waveform */
.waveform-container {
    position: relative;
    background: var(--waveform-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
    height: 200px;
}

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

.waveform-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.selection-overlay {
    position: absolute;
    top: 0;
    height: 100%;
    background: var(--selection-color);
    pointer-events: none;
}

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

.time-markers {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 20px;
    font-size: 0.8rem;
    color: var(--secondary-color);
}

/* Controls */
.control-panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.playback-controls {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.control-btn {
    padding: 10px 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--container-bg);
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.control-btn:hover:not(:disabled) {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.control-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.control-btn.secondary {
    background: transparent;
}

.volume-control {
    display: flex;
    align-items: center;
    gap: 10px;
}

.volume-slider {
    width: 100px;
}

.time-display {
    font-family: monospace;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
}

/* Selection */
.selection-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.time-inputs {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

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

.time-input-group label {
    font-size: 0.9rem;
    color: var(--secondary-color);
}

.time-input {
    padding: 8px 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--container-bg);
    color: var(--text-color);
    font-family: monospace;
    width: 100px;
}

.selection-controls {
    display: flex;
    gap: 10px;
}

/* Tools */
.tool-groups {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.tool-group h4 {
    margin-bottom: 10px;
    color: var(--text-color);
    font-size: 1rem;
}

.tool-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tool-btn {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--container-bg);
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.85rem;
}

.tool-btn:hover:not(:disabled) {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.tool-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* History */
.history-section {
    padding: 15px 20px;
}

.history-controls {
    display: flex;
    gap: 10px;
    justify-content: center;
}

/* Export */
.export-settings {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.setting-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 150px;
}

.setting-group label {
    font-weight: 500;
    color: var(--text-color);
    font-size: 0.9rem;
}

.format-select,
.quality-select {
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--container-bg);
    color: var(--text-color);
    font-size: 1rem;
    cursor: pointer;
}

.export-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.action-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.action-btn:not(.secondary) {
    background: var(--primary-color);
    color: white;
}

.action-btn:not(.secondary):hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.action-btn.secondary {
    background: transparent;
    color: var(--secondary-color);
    border: 1px solid var(--border-color);
}

.action-btn.secondary:hover {
    background: var(--border-color);
    color: var(--text-color);
}

/* Instructions */
.instructions {
    margin-top: 40px;
    padding: 20px;
    background: var(--bg-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.instructions h2 {
    margin-bottom: 15px;
    color: var(--text-color);
    font-size: 1.3rem;
}

.instructions ol {
    padding-left: 20px;
}

.instructions li {
    margin-bottom: 8px;
    color: var(--text-color);
}

/* Error Messages */
.error-message {
    background: rgba(229, 62, 62, 0.1);
    border: 1px solid var(--error-color);
    color: var(--error-color);
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-weight: 500;
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: var(--container-bg);
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    z-index: 1000;
}

.theme-toggle:hover {
    transform: scale(1.1);
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        margin: 10px;
        padding: 15px;
    }

    h1 {
        font-size: 2rem;
    }

    .info-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }

    .control-panel {
        flex-direction: column;
        align-items: stretch;
    }

    .playback-controls {
        justify-content: center;
    }

    .selection-info {
        flex-direction: column;
        align-items: stretch;
    }

    .tool-groups {
        grid-template-columns: 1fr;
    }

    .export-settings {
        flex-direction: column;
    }

    .export-buttons {
        flex-direction: column;
    }

    .waveform-container {
        height: 150px;
    }
}

@media (max-width: 480px) {
    .upload-area {
        padding: 30px 15px;
    }

    .upload-icon {
        font-size: 2.5rem;
    }

    .time-inputs {
        flex-direction: column;
    }

    .tool-buttons {
        justify-content: center;
    }
}