/* Professional Audio Editor Styles */
:root[data-theme="light"] {
    --bg-color: #f2f5fb;
    --container-bg: #ffffff;
    --surface-bg: #eef2f8;
    --text-color: #0f172a;
    --text-muted: #586174;
    --border-color: #dbe2ef;
    --primary-color: #1d4ed8;
    --primary-hover: #1e40af;
    --secondary-color: #64748b;
    --success-color: #22c55e;
    --success-hover: #16a34a;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 24px 48px rgba(15, 23, 42, 0.12);
    --waveform-color: #2563eb;
    --waveform-bg: #f1f5fb;
    --selection-color: rgba(37, 99, 235, 0.18);
    --playhead-color: #ef4444;
    --transport-bg: rgba(255, 255, 255, 0.9);
    --sidebar-bg: #f7f9fc;
    --panel-bg: #ffffff;
    --accent-color: #f97316;
    --focus-ring: rgba(37, 99, 235, 0.35);
    --bg-glow-1: rgba(37, 99, 235, 0.18);
    --bg-glow-2: rgba(34, 197, 94, 0.14);
    --grid-color: rgba(15, 23, 42, 0.06);
    --panel-grad-start: rgba(255, 255, 255, 0.9);
    --panel-grad-end: rgba(255, 255, 255, 0.4);
}

:root[data-theme="dark"] {
    --bg-color: #0b1220;
    --container-bg: #121b2e;
    --surface-bg: #1a2540;
    --text-color: #e6edf8;
    --text-muted: #9aa6bf;
    --border-color: #27324e;
    --primary-color: #6aa5ff;
    --primary-hover: #4f8cff;
    --secondary-color: #9aa6bf;
    --success-color: #34d399;
    --success-hover: #22c55e;
    --error-color: #f87171;
    --warning-color: #fbbf24;
    --shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 28px 60px rgba(0, 0, 0, 0.45);
    --waveform-color: #7aa2ff;
    --waveform-bg: #121b2e;
    --selection-color: rgba(122, 162, 255, 0.22);
    --playhead-color: #f87171;
    --transport-bg: rgba(18, 27, 46, 0.95);
    --sidebar-bg: #0b1220;
    --panel-bg: #131e34;
    --accent-color: #f59e0b;
    --focus-ring: rgba(122, 162, 255, 0.45);
    --bg-glow-1: rgba(96, 165, 250, 0.22);
    --bg-glow-2: rgba(34, 197, 94, 0.16);
    --grid-color: rgba(148, 163, 184, 0.12);
    --panel-grad-start: rgba(18, 27, 46, 0.9);
    --panel-grad-end: rgba(18, 27, 46, 0.6);
}

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

body {
    font-family: "Space Grotesk", "Sora", "Noto Sans", sans-serif;
    background-color: var(--bg-color);
    background-image:
        radial-gradient(900px 480px at 8% -10%, var(--bg-glow-1), transparent 70%),
        radial-gradient(800px 520px at 92% 0%, var(--bg-glow-2), transparent 65%);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    transition: all 0.3s ease;
    overflow-x: hidden;
}

button,
input,
select,
textarea {
    font-family: inherit;
}

:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 2px;
}

.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;
    backdrop-filter: blur(10px);
}

.editor-header::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-color), var(--accent-color), transparent);
    opacity: 0.45;
}

.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: transparent;
    border-radius: 999px;
    padding: 0;
    border: none;
    gap: 0.5rem;
}

.view-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    background: var(--container-bg);
    color: var(--text-muted);
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: 0 6px 12px rgba(15, 23, 42, 0.08);
}

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

.view-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 8px 16px rgba(29, 78, 216, 0.25);
}

/* ========== 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: linear-gradient(140deg, var(--panel-grad-start), var(--panel-grad-end)), var(--container-bg);
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--primary-color);
    background: linear-gradient(140deg, rgba(29, 78, 216, 0.18), rgba(34, 197, 94, 0.12)), var(--container-bg);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.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;
    backdrop-filter: blur(6px);
}

.loading-content {
    background: linear-gradient(160deg, var(--panel-grad-start), var(--panel-grad-end)), var(--container-bg);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    min-width: 300px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.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);
    backdrop-filter: blur(8px);
}

.session-insights {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.9rem;
    padding: 0.9rem 1.5rem 0;
}

.insight-card {
    padding: 0.9rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background:
        radial-gradient(circle at top right, rgba(96, 165, 250, 0.12), transparent 45%),
        linear-gradient(135deg, rgba(15, 23, 42, 0.04), rgba(14, 165, 233, 0.08));
    box-shadow: var(--shadow);
}

.insight-label {
    display: block;
    margin-bottom: 0.35rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

.insight-value {
    display: block;
    font-size: 1rem;
    color: var(--text-color);
    font-family: 'JetBrains Mono', monospace;
}

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

.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;
    box-shadow: 0 8px 14px rgba(15, 23, 42, 0.08);
}

.transport-btn.compact {
    padding: 0.6rem 1.1rem;
    font-size: 0.875rem;
}

.transport-btn.toggle[aria-pressed="true"] {
    background: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
    box-shadow: 0 10px 18px rgba(249, 115, 22, 0.3);
}

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

.transport-btn.primary {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 12px 20px rgba(29, 78, 216, 0.25);
}

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

.transport-btn.recording {
    background: var(--error-color);
    border-color: var(--error-color);
    color: white;
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.25);
}

.transport-btn.recording:hover {
    background: var(--error-color);
    transform: translateY(-1px);
}

.transport-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.transport-btn:disabled:hover {
    background: var(--container-bg);
}

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

.volume-slider {
    width: 80px;
}

.speed-slider {
    width: 100px;
}

.speed-value {
    font-size: 0.875rem;
    color: var(--text-muted);
    min-width: 3.5rem;
    text-align: center;
}

.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;
    backdrop-filter: blur(6px);
}

.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);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02);
}

.center-area.split-view .visualization-section.active {
    margin: 1rem 1.5rem 0;
    border-radius: 18px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow);
    background: var(--panel-bg);
}

.center-area.split-view #waveform-section {
    flex: 0 0 auto;
}

.center-area.split-view #spectrum-section {
    flex: 0 0 auto;
}

.center-area.split-view .waveform-container,
.center-area.split-view .spectrum-container {
    border: none;
    border-radius: 0;
}

.center-area.split-view .selection-bar {
    margin: 1rem 1.5rem 1.5rem;
    border-radius: 14px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

/* ========== PANELS ========== */
.info-panel,
.tools-panel,
.effects-panel,
.processing-panel {
    background: linear-gradient(160deg, var(--panel-bg), var(--surface-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;
    overflow: hidden;
}

.visualization-section.active {
    display: flex;
    animation: sectionIn 0.45s ease;
}

.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);
    box-shadow: inset 0 -1px 0 rgba(15, 23, 42, 0.06);
}

.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;
    box-shadow: 0 6px 12px rgba(15, 23, 42, 0.08);
}

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

.control-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 10px 18px rgba(29, 78, 216, 0.25);
}

/* ========== WAVEFORM ========== */
.waveform-container {
    flex: 0 0 auto;
    position: relative;
    background: var(--waveform-bg);
    background-image:
        linear-gradient(transparent 94%, var(--grid-color) 95%),
        linear-gradient(90deg, transparent 94%, var(--grid-color) 95%);
    background-size: 40px 40px;
    height: clamp(260px, 38vh, 420px);
    min-height: 260px;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    overflow: hidden;
}

.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: 0 0 auto;
    position: relative;
    background: var(--waveform-bg);
    background-image: radial-gradient(circle at 20% 20%, rgba(96, 165, 250, 0.08), transparent 45%);
    height: clamp(260px, 38vh, 420px);
    min-height: 260px;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    overflow: hidden;
}

.center-area.split-view .waveform-container,
.center-area.split-view .spectrum-container {
    height: clamp(220px, 28vh, 320px);
    min-height: 220px;
}

.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;
    backdrop-filter: blur(6px);
}

.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;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.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;
}

.selection-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0.75rem;
}

.selection-btn {
    padding: 0.5rem 0.9rem;
    border: 1px solid var(--border-color);
    background: var(--container-bg);
    color: var(--text-color);
    border-radius: 999px;
    cursor: pointer;
    font-size: 0.8125rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.selection-btn.mini {
    min-width: 3.25rem;
    padding-inline: 0.75rem;
    font-family: 'JetBrains Mono', monospace;
}

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

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

.selection-hint {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

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

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

.silence-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 0.75rem;
    flex-wrap: wrap;
}

.silence-controls label {
    font-size: 0.8125rem;
    color: var(--text-muted);
    min-width: 5rem;
}

.silence-slider {
    flex: 1;
    min-width: 120px;
}

.silence-input,
.silence-select {
    padding: 0.45rem 0.6rem;
    border: 1px solid var(--border-color);
    background: var(--container-bg);
    border-radius: 6px;
    font-size: 0.8125rem;
    color: var(--text-color);
}

.silence-value,
.silence-unit {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.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);
    backdrop-filter: blur(8px);
}

.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: linear-gradient(180deg, var(--panel-grad-start), var(--panel-grad-end)), 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;
    box-shadow: var(--shadow);
}

.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: min(400px, 90vw);
    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;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ========== MOTION ========== */
@keyframes sectionIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes floatIn {
    from {
        opacity: 0;
        transform: translateY(12px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.audio-editor,
.upload-section,
.help-section {
    animation: floatIn 0.6s ease both;
}

.help-item {
    animation: sectionIn 0.6s ease both;
}

.help-item:nth-child(1) { animation-delay: 0.05s; }
.help-item:nth-child(2) { animation-delay: 0.1s; }
.help-item:nth-child(3) { animation-delay: 0.15s; }
.help-item:nth-child(4) { animation-delay: 0.2s; }

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !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: 0.75rem;
        gap: 0.5rem;
    }

    .transport-btn,
    .tool-btn,
    .control-btn,
    .selection-btn {
        min-height: 44px;
    }

    .transport-btn.compact {
        padding: 0.5rem 0.8rem;
    }

    .session-insights {
        grid-template-columns: 1fr;
        padding: 0.75rem 1rem 0;
    }
    
    .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;
    }

    .modal-content {
        border-radius: 8px;
        margin: 1rem;
    }
}

/* ========== 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);
}