:root {
    --bg-primary:    #0a0a0a;
    --bg-panel:      #0f0f0f;
    --bg-panel-dark: #080808;
    --border-dim:    #1a4a4a;
    --accent:        #00ffff;
    --border-bright: var(--accent);
    --text-primary:  #cccccc;
    --text-dim:      #555555;
    --text-accent:   var(--accent);
    --font-mono:     'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    --font-size:     13px;
}

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

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: var(--font-size);
    line-height: 1.4;
    height: 100vh;
    overflow: hidden;
}

/* Layout: header / (sidebar + main) / transport */
.app-shell {
    display: grid;
    grid-template-rows: 36px 1fr 52px;
    grid-template-columns: 200px 1fr;
    grid-template-areas:
        "header    header"
        "sidebar   main"
        "transport transport";
    height: 100vh;
    gap: 1px;
    background: #111;
}

/* ── Header ─────────────────────────────────── */
.header {
    grid-area: header;
    background: var(--bg-panel-dark);
    border-bottom: 1px solid var(--border-dim);
    display: flex;
    align-items: center;
    padding: 0 12px;
    gap: 10px;
}

.header-title {
    color: var(--text-accent);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.15em;
}

.header-sep {
    color: var(--border-dim);
}

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--text-dim);
    flex-shrink: 0;
}
.status-dot.connected { background: #00ff88; }
.status-dot.error     { background: #ff3333; }

.beat-indicator {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--text-dim);
    flex-shrink: 0;
    transition: background 0.05s;
}
.beat-indicator.beat-flash {
    background: #ffcc00;
    box-shadow: 0 0 10px #ffcc00;
}
.beat-label {
    font-size: 10px;
    letter-spacing: 0.12em;
}

/* ── Sidebar ─────────────────────────────────── */
.sidebar {
    grid-area: sidebar;
    display: flex;
    flex-direction: column;
    background: var(--bg-panel);
    border-right: 1px solid var(--border-dim);
    overflow: hidden;
}

.panel {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    flex: 1;
    min-height: 0;
}

.panel-header {
    background: var(--bg-panel-dark);
    border-bottom: 1px solid var(--border-dim);
    padding: 5px 10px;
    font-size: 10px;
    letter-spacing: 0.14em;
    color: var(--text-accent);
    text-transform: uppercase;
    flex-shrink: 0;
}

.panel-content {
    flex: 1;
    padding: 8px 10px;
    overflow-y: auto;
    min-height: 0;
}

::-webkit-scrollbar { width: 3px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-dim); }

.device-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 5px 0;
    border-bottom: 1px solid #111;
    gap: 6px;
}
.device-row:last-child { border-bottom: none; }

.device-row-info {
    display: flex;
    flex-direction: column;
    gap: 1px;
    min-width: 0;
    font-size: 12px;
}

.device-remove {
    background: none;
    border: none;
    color: var(--text-dim);
    font-size: 14px;
    cursor: pointer;
    padding: 0 2px;
    line-height: 1;
    flex-shrink: 0;
}
.device-remove:hover { color: #ff3333; border: none; }

.device-manage-section {
    border-top: 1px solid var(--border-dim);
    flex-shrink: 0;
}
.device-manage-section > summary {
    padding: 5px 10px;
    font-size: 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-dim);
    cursor: pointer;
    user-select: none;
    list-style: none;
}
.device-manage-section > summary::-webkit-details-marker { display: none; }
.device-manage-section > summary::before { content: "▶ "; font-size: 8px; }
.device-manage-section[open] > summary { color: var(--text-accent); }
.device-manage-section[open] > summary::before { content: "▼ "; }

.device-form {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 8px 10px;
}
.device-form button[type="submit"] {
    margin-top: 2px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* ── Main area — Animation grid ─────────────── */
.main-area {
    grid-area: main;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.section-header {
    padding: 5px 14px;
    font-size: 10px;
    letter-spacing: 0.14em;
    color: var(--text-accent);
    text-transform: uppercase;
    background: var(--bg-panel-dark);
    border-bottom: 1px solid var(--border-dim);
    flex-shrink: 0;
}

.animation-list {
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    flex: 1;
}

.anim-tile {
    background: transparent;
    border: none;
    border-bottom: 1px solid #111;
    color: var(--text-dim);
    font-family: var(--font-mono);
    font-size: var(--font-size);
    cursor: pointer;
    padding: 8px 14px;
    display: flex;
    align-items: baseline;
    gap: 10px;
    text-align: left;
}

.anim-tile:hover {
    background: #0d0d0d;
    color: var(--text-primary);
}

.anim-tile.active {
    background: #0a1a1a;
    color: var(--accent);
}

.anim-cursor {
    color: transparent;
    flex-shrink: 0;
    font-size: 12px;
}

.anim-tile.active .anim-cursor {
    color: var(--accent);
}

.anim-name {
    font-size: 12px;
    letter-spacing: 0.06em;
    flex-shrink: 0;
}

.anim-desc {
    font-size: 11px;
    color: var(--text-dim);
}

/* ── Transport bar ───────────────────────────── */
.transport-bar {
    grid-area: transport;
    background: var(--bg-panel-dark);
    border-top: 1px solid var(--border-dim);
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 12px;
}

.transport-btn {
    background: var(--bg-panel);
    color: var(--accent);
    border: 1px solid var(--border-dim);
    padding: 5px 10px;
    font-family: var(--font-mono);
    font-size: 12px;
    cursor: pointer;
    white-space: nowrap;
    flex-shrink: 0;
    text-align: center;
}
.transport-btn:hover {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
}

.transport-playpause {
    min-width: 38px;
    font-size: 14px;
}

.transport-time {
    font-size: 12px;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    color: var(--text-primary);
    flex-shrink: 0;
}

.seek-slider {
    flex: 1;
    min-width: 60px;
    accent-color: var(--accent);
    cursor: pointer;
    height: 3px;
}

.transport-sep {
    width: 1px;
    height: 20px;
    background: var(--border-dim);
    flex-shrink: 0;
}

.transport-file-select {
    background: var(--bg-panel);
    color: var(--text-primary);
    border: 1px solid var(--border-dim);
    font-family: var(--font-mono);
    font-size: 12px;
    padding: 4px 6px;
    max-width: 200px;
    min-width: 100px;
    cursor: pointer;
    flex-shrink: 1;
}

/* Form base */
input, select, button {
    background: var(--bg-panel);
    border: 1px solid var(--border-dim);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: var(--font-size);
    padding: 4px 8px;
    outline: none;
    border-radius: 0;
}
button:hover {
    border-color: var(--border-bright);
    color: var(--text-accent);
    cursor: pointer;
}

.text-dim    { color: var(--text-dim); }
.text-accent { color: var(--text-accent); }

/* ── Timeline ──────────────────────────────────── */
#timeline-canvas {
    flex: 1;
    display: block;
    min-height: 0;
    cursor: default;
}

.timeline-toolbar {
    height: 32px;
    background: var(--bg-panel-dark);
    border-bottom: 1px solid var(--border-dim);
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 12px;
    flex-shrink: 0;
}

.toolbar-field {
    display: flex;
    align-items: center;
    gap: 6px;
}

.toolbar-label {
    font-size: 10px;
    text-transform: uppercase;
    color: var(--text-dim);
    letter-spacing: 0.1em;
    white-space: nowrap;
}

.toolbar-unit {
    font-size: 10px;
    color: var(--text-dim);
}

.toolbar-sep {
    width: 1px;
    height: 20px;
    background: var(--border-dim);
    flex-shrink: 0;
}

#zoom-slider {
    width: 100px;
    accent-color: var(--accent);
    height: 3px;
}

#beat-offset {
    width: 70px;
    font-size: 12px;
    padding: 2px 4px;
}

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

/* ── Block Inspector Strip ─────────────────────── */
.block-inspector {
    height: 40px;
    background: var(--bg-panel-dark);
    border-top: 1px solid var(--border-dim);
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 12px;
    flex-shrink: 0;
}

.inspector-label {
    color: var(--text-accent);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    flex-shrink: 0;
    min-width: 120px;
}

.inspector-field {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 10px;
    text-transform: uppercase;
    color: var(--text-dim);
    letter-spacing: 0.1em;
}

.inspector-field input,
.inspector-field select {
    font-size: 12px;
    padding: 2px 4px;
    background: var(--bg-panel);
    border: 1px solid var(--border-dim);
    color: var(--text-primary);
    font-family: var(--font-mono);
}

.inspector-field input[type="number"] {
    width: 60px;
}

.inspector-color-swatch {
    width: 16px;
    height: 16px;
    border: 1px solid var(--border-dim);
    cursor: pointer;
    flex-shrink: 0;
}

.inspector-remove {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--text-dim);
    font-size: 16px;
    cursor: pointer;
    padding: 0 4px;
}
.inspector-remove:hover {
    color: #ff3333;
    border: none;
}

/* ── Live Preview Panel (Phase 5) ──────────────────────────────────────────── */

.live-preview {
    border-top: 1px solid var(--border-dim);
    border-bottom: 1px solid var(--border-dim);
    background: var(--bg-panel-dark);
    display: flex;
    flex-direction: column;
    gap: 1px;
    padding: 4px 0;
    max-height: 60px;
    overflow-y: auto;
    flex-shrink: 0;
}

.device-strip {
    display: flex;
    align-items: center;
    height: 18px;
    padding: 0 4px;
    background: var(--bg-panel);
    gap: 8px;
    font-size: 12px;
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
    transition: background-color 0.1s;
}

.strip-label {
    color: var(--text-dim);
    text-transform: uppercase;
    min-width: 80px;
    flex-shrink: 0;
    font-size: 10px;
    letter-spacing: 0.12em;
}

.strip-color {
    width: 40px;
    height: 10px;
    background: var(--text-dim);
    flex-shrink: 0;
    transition: background-color 0.15s;
}

.strip-anim {
    color: var(--text-dim);
    font-size: 10px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.device-strip.active .strip-label {
    color: var(--text-primary);
}

.device-strip.active .strip-anim {
    color: var(--text-primary);
}

.keyboard-hint {
    color: var(--text-dim);
    font-size: 10px;
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
    white-space: nowrap;
    flex-shrink: 0;
}

/* YouTube URL input (Phase 6) */
.yt-url-input {
    background: var(--bg-panel);
    border: 1px solid var(--border-dim);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 12px;
    padding: 2px 6px;
    width: 180px;
    outline: none;
}
.yt-url-input:focus {
    border-color: var(--accent);
}
.yt-url-input:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}
.yt-progress {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--accent);
    white-space: nowrap;
    min-width: 200px;
}

/* AI Sync panel (Phase 6) */
.ai-sync-panel {
    background: var(--bg-panel-dark);
    border: 1px solid var(--border-dim);
    margin: 0 4px;
    padding: 0;
    font-family: var(--font-mono);
}
.ai-sync-header {
    background: var(--bg-panel);
    padding: 4px 8px;
    font-size: 11px;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: 1px solid var(--border-dim);
}
.ai-sync-body {
    padding: 6px 8px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.ai-sync-info {
    font-size: 11px;
    color: var(--text-dim);
    min-width: 140px;
}
.ai-sync-toggles {
    display: flex;
    gap: 8px;
}
.ai-sync-toggle {
    font-size: 11px;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 3px;
}
.ai-sync-toggle input[type="checkbox"] {
    accent-color: var(--accent);
}
.ai-sync-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}
.ai-sync-generate {
    background: var(--accent);
    color: var(--bg-primary);
    font-weight: bold;
    padding: 3px 12px;
}
.ai-sync-generate:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}
.ai-sync-llm-toggle {
    opacity: 0.4;
}
.ai-sync-llm-toggle:not(.disabled) {
    opacity: 1;
}