/* ===== AudioRez - Styles v2 ===== */

:root {
    --bg: #0f1117;
    --bg-card: #1a1d27;
    --bg-hover: #242836;
    --bg-input: #151822;
    --border: #2a2e3d;
    --border-active: #5865f2;
    --text: #e4e6ef;
    --text-secondary: #8b8fa3;
    --text-muted: #5c6070;
    --accent: #5865f2;
    --accent-hover: #6c78f5;
    --accent-glow: rgba(88, 101, 242, 0.25);
    --green: #43b581;
    --red: #f04747;
    --orange: #faa61a;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 24px rgba(0,0,0,0.3);
    --transition: 0.2s ease;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

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

.app {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 40px;
}

/* === Header === */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 30px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon { font-size: 32px; color: var(--accent); }
.logo { font-size: 24px; font-weight: 700; color: var(--text); letter-spacing: -0.5px; }
.logo-accent { color: var(--accent); }
.header-hint { color: var(--text-secondary); font-size: 14px; }

/* === Upload Zone === */
.upload-zone {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.upload-area {
    width: 100%;
    max-width: 600px;
    padding: 60px 40px;
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    background: var(--bg-card);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--accent);
    background: var(--bg-hover);
    box-shadow: var(--shadow), 0 0 40px var(--accent-glow);
}

.upload-icon { font-size: 64px; color: var(--accent); margin-bottom: 16px; }
.upload-area h2 { font-size: 20px; font-weight: 600; margin-bottom: 8px; }
.upload-area p { color: var(--text-secondary); font-size: 14px; }
.upload-hint { margin-top: 12px !important; color: var(--text-muted) !important; font-size: 12px !important; }

/* === Loading === */
.loading-section {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.loader-container { text-align: center; }

.loader-spinner {
    width: 56px;
    height: 56px;
    border: 4px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin { to { transform: rotate(360deg); } }
.loader-text { color: var(--text-secondary); font-size: 15px; }

/* === File Info Bar === */
.file-info-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 20px;
    margin-bottom: 16px;
}

.file-info-left { display: flex; align-items: center; gap: 10px; }
.file-info-left .material-icons-round { color: var(--accent); font-size: 22px; }
.file-name { font-weight: 600; font-size: 15px; }
.file-meta { color: var(--text-secondary); font-size: 13px; }

/* === Waveform === */
.waveform-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 12px;
    overflow-x: auto;
}

.waveform-wrapper {
    position: relative;
    height: 160px;
    cursor: crosshair;
    min-width: 100%;
}

#waveformCanvas { width: 100%; height: 100%; display: block; border-radius: 6px; }

.playhead {
    position: absolute;
    top: 0;
    left: 0;
    width: 2px;
    height: 100%;
    background: #fff;
    box-shadow: 0 0 6px rgba(255,255,255,0.5);
    pointer-events: none;
    z-index: 10;
    transition: left 0.05s linear;
}

.selection-overlay {
    position: absolute;
    top: 0;
    height: 100%;
    background: rgba(88, 101, 242, 0.2);
    border-left: 2px solid var(--accent);
    border-right: 2px solid var(--accent);
    pointer-events: none;
    display: none;
    z-index: 5;
}

.time-ruler {
    display: flex;
    justify-content: space-between;
    padding: 6px 0 0;
    color: var(--text-muted);
    font-size: 11px;
    font-family: monospace;
    user-select: none;
}

/* === Transport Controls === */
.transport-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 16px;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 10px;
}

.transport-left,
.transport-center,
.transport-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.transport-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--bg-hover);
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.transport-btn:hover { background: var(--accent); color: #fff; }
.transport-btn .material-icons-round { font-size: 24px; }

.time-display {
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
    color: var(--text-secondary);
    min-width: 130px;
}

.action-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-hover);
    color: var(--text);
    font-size: 13px;
    font-family: var(--font);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.action-btn:hover { border-color: var(--accent); background: rgba(88, 101, 242, 0.15); }
.action-btn .material-icons-round { font-size: 18px; }
.action-btn.danger:hover { border-color: var(--red); background: rgba(240, 71, 71, 0.15); color: var(--red); }
.action-btn.accent { border-color: var(--accent); background: rgba(88, 101, 242, 0.12); color: var(--accent); }
.action-btn.accent:hover { background: var(--accent); color: #fff; }

.zoom-label { font-size: 13px; color: var(--text-secondary); }
.zoom-slider { width: 100px; accent-color: var(--accent); }

/* === Segments Panel === */
.segments-panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 16px;
}

.segments-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 10px;
}

.segments-header h3 { display: flex; align-items: center; gap: 8px; font-size: 16px; font-weight: 600; }
.segments-header h3 .material-icons-round { color: var(--accent); }
.segments-actions { display: flex; gap: 8px; }

.segments-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 40px;
}

.segment-empty { color: var(--text-muted); font-size: 14px; text-align: center; padding: 20px; }

/* Segment Card */
.segment-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    cursor: grab;
    user-select: none;
}

.segment-card:active { cursor: grabbing; }

.segment-card.selected {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent), 0 0 12px var(--accent-glow);
}

.segment-card.playing {
    border-color: var(--green);
    box-shadow: 0 0 0 1px var(--green), 0 0 16px rgba(67, 181, 129, 0.3);
    background: rgba(67, 181, 129, 0.08);
}

.segment-card.playing .play-seg {
    color: var(--green) !important;
    background: rgba(67, 181, 129, 0.15);
}

.segment-card.dragging { opacity: 0.5; transform: scale(0.98); }
.segment-card.drag-over { border-color: var(--green); background: rgba(67, 181, 129, 0.08); }

.segment-color { width: 6px; height: 36px; border-radius: 3px; flex-shrink: 0; }
.segment-info { flex: 1; min-width: 0; }
.segment-name { font-size: 14px; font-weight: 500; margin-bottom: 2px; }
.segment-time { font-size: 12px; color: var(--text-secondary); font-family: monospace; }
.segment-actions { display: flex; gap: 4px; }

.seg-btn {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.seg-btn:hover { background: var(--bg-hover); color: var(--text); }
.seg-btn.play-seg:hover { color: var(--green); }
.seg-btn.add-assembly:hover { color: var(--orange); }
.seg-btn.download-seg:hover { color: var(--accent); }
.seg-btn.delete-seg:hover { color: var(--red); }
.seg-btn .material-icons-round { font-size: 18px; }

/* === Assembly Panel (Montage Table) === */
.assembly-panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 16px;
}

.assembly-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
    flex-wrap: wrap;
    gap: 10px;
}

.assembly-header h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 600;
}

.assembly-header h3 .material-icons-round { color: var(--orange); }
.assembly-actions { display: flex; gap: 8px; }

.assembly-hint {
    color: var(--text-muted);
    font-size: 12px;
    margin-bottom: 12px;
}

.assembly-hint b { color: var(--text-secondary); }

.assembly-timeline {
    display: flex;
    align-items: stretch;
    gap: 0;
    min-height: 70px;
    background: var(--bg-input);
    border: 2px dashed var(--border);
    border-radius: var(--radius-sm);
    padding: 10px;
    overflow-x: auto;
    transition: all var(--transition);
    flex-wrap: wrap;
}

.assembly-timeline.drop-active {
    border-color: var(--accent);
    background: rgba(88, 101, 242, 0.06);
    box-shadow: inset 0 0 20px var(--accent-glow);
}

.assembly-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    color: var(--text-muted);
    font-size: 14px;
    padding: 10px;
}

.assembly-placeholder .material-icons-round { font-size: 24px; opacity: 0.5; }

/* Assembly Block */
.assembly-block {
    position: relative;
    display: flex;
    align-items: center;
    min-width: 80px;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    cursor: grab;
    transition: all var(--transition);
    flex-shrink: 0;
}

.assembly-block:active { cursor: grabbing; }
.assembly-block:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.3); }
.assembly-block.dragging { opacity: 0.4; }
.assembly-block.drag-over { transform: scale(1.05); box-shadow: 0 0 0 2px var(--green); }

.asm-color-bar {
    width: 5px;
    align-self: stretch;
    flex-shrink: 0;
}

.asm-block-body {
    padding: 8px 10px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
    min-width: 0;
}

.asm-name {
    font-size: 12px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.asm-dur {
    font-size: 11px;
    color: var(--text-secondary);
    font-family: monospace;
}

.asm-remove {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 20px;
    height: 20px;
    border-radius: 4px;
    border: none;
    background: rgba(0,0,0,0.4);
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all var(--transition);
}

.assembly-block:hover .asm-remove { opacity: 1; }
.asm-remove:hover { background: var(--red); color: #fff; }
.asm-remove .material-icons-round { font-size: 14px; }

.assembly-connector {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    flex-shrink: 0;
    color: var(--text-muted);
    position: absolute;
    right: -24px;
    top: 0;
    bottom: 0;
    z-index: 5;
}

.assembly-connector.glow { color: var(--accent); }
.assembly-connector .material-icons-round { font-size: 20px; }

.assembly-total {
    display: flex;
    align-items: center;
    padding: 0 12px;
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
    margin-left: auto;
}

/* === Export Panel === */
.export-panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}

.export-panel h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.export-panel h3 .material-icons-round { color: var(--accent); }

.export-options { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.export-option { display: flex; align-items: center; gap: 8px; }
.export-option label { font-size: 14px; color: var(--text-secondary); }

.styled-select {
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--bg-input);
    color: var(--text);
    font-family: var(--font);
    font-size: 14px;
    cursor: pointer;
    outline: none;
}

.styled-select:focus { border-color: var(--accent); }

/* === Toast === */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 1000;
}

.toast {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text);
    font-size: 14px;
    box-shadow: var(--shadow);
    animation: slideIn 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    max-width: 360px;
}

.toast.success { border-color: var(--green); }
.toast.success .material-icons-round { color: var(--green); }
.toast.error { border-color: var(--red); }
.toast.error .material-icons-round { color: var(--red); }
.toast.info { border-color: var(--accent); }
.toast.info .material-icons-round { color: var(--accent); }

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

/* === Btn Icon === */
.btn-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

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

/* === Responsive === */
@media (max-width: 768px) {
    .header { flex-direction: column; gap: 8px; text-align: center; }
    .header-hint { display: none; }
    .transport-controls { flex-direction: column; }
    .segments-header { flex-direction: column; align-items: flex-start; }
    .assembly-header { flex-direction: column; align-items: flex-start; }
    .upload-area { padding: 40px 24px; }
    .waveform-wrapper { height: 120px; }
    .assembly-timeline { flex-direction: column; }
    .assembly-block { width: 100% !important; }
}

/* Volume Control */
.volume-control {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-right: 12px;
}

.volume-icon {
    font-size: 20px;
    color: #a78bfa;
    cursor: pointer;
    user-select: none;
    transition: color 0.2s;
}

.volume-icon:hover {
    color: #c4b5fd;
}

.volume-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 90px;
    height: 4px;
    border-radius: 2px;
    background: linear-gradient(to right, #a78bfa 0%, #a78bfa var(--vol, 70%), #2a2d3a var(--vol, 70%), #2a2d3a 100%);
    outline: none;
    cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #a78bfa;
    cursor: pointer;
    box-shadow: 0 0 4px rgba(167, 139, 250, 0.4);
    transition: transform 0.15s;
}

.volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.volume-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #a78bfa;
    cursor: pointer;
    border: none;
    box-shadow: 0 0 4px rgba(167, 139, 250, 0.4);
}

.volume-slider::-moz-range-track {
    height: 4px;
    border-radius: 2px;
    background: #2a2d3a;
}

.volume-value {
    font-size: 12px;
    color: #8b8fa3;
    min-width: 32px;
    text-align: right;
    font-variant-numeric: tabular-nums;
}