.tc-shell {
    display: grid;
    gap: 12px;
}

.tc-panel {
    --tc-accent: #ff7a59;
    --tc-surface: rgba(255, 122, 89, 0.14);
    --tc-border: rgba(255, 122, 89, 0.35);
    display: grid;
    gap: 10px;
    padding: 12px 14px;
    margin: 0 0 12px;
    border: 1px solid var(--tc-border);
    border-radius: 16px;
    background:
        linear-gradient(135deg, var(--tc-surface), transparent 58%),
        var(--bg-card);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18);
}

.tc-identity {
    display: grid;
    gap: 12px;
}

.tc-headbar {
    display: flex;
    gap: 8px;
    align-items: center;
}

.tc-copy {
    flex: 0 0 220px;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 4px;
}

.tc-title {
    margin: 0;
    font-size: 0.92rem;
    color: var(--text);
    line-height: 1.1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tc-tool {
    position: relative;
}

.tc-tool-btn {
    --tc-swatch: var(--tc-accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: 14px;
    border: 1px solid var(--tc-border);
    background: rgba(0, 0, 0, 0.14);
    color: var(--text);
    cursor: pointer;
    transition: box-shadow 0.16s ease, border-color 0.16s ease, transform 0.16s ease;
}

.tc-tool-btn:hover {
    transform: translateY(-1px);
}

.tc-tool-btn[hidden] {
    display: none;
}

.tc-back-btn {
    width: auto;
    padding: 0 14px;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.tc-tool-btn.is-open {
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--tc-accent) 28%, transparent);
}

.tc-drag-handle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    flex-shrink: 0;
    cursor: grab;
    color: var(--text-dim);
    opacity: 0.35;
    transition: opacity 0.15s, color 0.15s;
    touch-action: none;
}

.tc-open-btn {
    flex-shrink: 0;
    transition: opacity 0.15s, background 0.15s;
}

.tc-open-btn:hover {
    opacity: 1;
    background: color-mix(in srgb, var(--tc-accent) 14%, transparent);
}

.tc-drag-handle:hover {
    opacity: 0.8;
    color: var(--text);
}

.tc-drag-handle:active {
    cursor: grabbing;
}

.tc-drag-handle[hidden] {
    display: none;
}

.tc-edit-btn {
    flex-shrink: 0;
    opacity: 0;
    width: 22px;
    height: 22px;
    padding: 3px;
    transition: opacity 0.15s;
}

.tc-edit-btn svg {
    width: 13px;
    height: 13px;
}

.tc-copy:hover .tc-edit-btn {
    opacity: 0.6;
}

.tc-edit-btn:hover {
    opacity: 1 !important;
}

.tc-delete-btn {
    flex-shrink: 0;
    opacity: 0.4;
    transition: opacity 0.15s, background 0.15s, color 0.15s;
}

.tc-delete-btn:hover {
    opacity: 1;
    background: #e53e3e;
    color: #fff;
    border-color: #e53e3e;
}

.tc-delete-btn.tc-confirm {
    opacity: 1;
    background: #e53e3e;
    color: #fff;
    border-color: #e53e3e;
}

.tc-solo-btn {
    flex-shrink: 0;
    font-weight: 700;
    font-size: 0.75rem;
}

.tc-solo-btn.is-solo {
    background: #d4a017;
    color: #000;
}

.tc-transport-btn.is-playing {
    background: color-mix(in srgb, var(--tc-accent) 24%, rgba(0, 0, 0, 0.14));
    color: var(--tc-accent);
}

.tc-palette {
    position: relative;
}

.tc-palette[hidden] {
    display: none;
}

.tc-palette-btn {
}

.tc-palette-grid {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    z-index: 12;
    display: none;
    grid-template-columns: repeat(8, 1fr);
    gap: 8px;
    width: 296px;
    padding: 12px;
    border-radius: 14px;
    border: 1px solid var(--tc-border);
    background: var(--bg-card);
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.22);
}

.tc-palette-grid.is-open {
    display: grid;
}

.tc-swatch {
    --tc-swatch: var(--tc-accent);
    width: 28px;
    height: 28px;
    padding: 0;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: var(--tc-swatch);
    cursor: pointer;
}

.tc-swatch.is-active {
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.85);
}

.tc-volume {
    position: relative;
}

.tc-volume-btn.is-muted {
    color: color-mix(in srgb, var(--tc-accent) 72%, white);
}

.tc-volume-popover {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    z-index: 12;
    display: none;
    width: 230px;
    padding: 12px;
    border-radius: 14px;
    border: 1px solid var(--tc-border);
    background: var(--bg-card);
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.22);
}

.tc-volume-popover.is-open {
    display: grid;
    gap: 10px;
}

.tc-volume-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.tc-volume-label {
    font-size: 0.76rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.tc-mute-btn {
    border: 1px solid var(--tc-border);
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.12);
    color: var(--text);
    padding: 5px 10px;
    font-size: 0.74rem;
    cursor: pointer;
}

.tc-mute-btn.is-muted {
    background: color-mix(in srgb, var(--tc-accent) 22%, rgba(0, 0, 0, 0.12));
    color: var(--tc-accent);
}

.tc-volume-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
    align-items: center;
}

.tc-volume-range {
    width: 100%;
    accent-color: var(--tc-accent);
}

.tc-volume-value {
    min-width: 52px;
    font-size: 0.8rem;
    color: var(--tc-accent);
    text-align: right;
}

.tc-field {
    display: grid;
    gap: 6px;
}

.tc-field-label {
    font-size: 0.76rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.tc-select {
    width: 100%;
    padding: 8px 10px;
    border-radius: 10px;
    border: 1px solid var(--tc-border);
    background: rgba(0, 0, 0, 0.16);
    color: var(--text);
    font: inherit;
}

.tc-overview-text {
    color: var(--text-dim);
    font-size: 0.72rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 0 0 112px;
    min-width: 0;
}

.tc-overview-bar {
    position: relative;
    display: flex;
    gap: 2px;
    align-items: stretch;
    flex: 1 1 0;
    min-width: 180px;
    padding: 4px;
    min-height: 20px;
    border-radius: 999px;
    border: 1px solid var(--tc-border);
    background: rgba(0, 0, 0, 0.12);
}

.tc-overview-bar.is-scrubbing {
    cursor: pointer;
}

.tc-overview-bar > * {
    flex: 1 1 0;
}

.tc-overview-marker {
    position: absolute;
    top: -2px;
    bottom: -2px;
    left: 0;
    width: 0;
    z-index: 5;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.12s;
    flex: none;
}

.tc-overview-marker.is-visible {
    opacity: 1;
}

.tc-overview-marker::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 3px;
    transform: translateX(-50%);
    border-radius: 999px;
    background: var(--tc-accent);
    box-shadow: 0 0 4px rgba(0, 0, 0, 0.3);
}

.tc-overview-marker::after {
    content: '';
    position: absolute;
    top: -3px;
    left: 50%;
    width: 9px;
    height: 9px;
    transform: translateX(-50%);
    border-radius: 50%;
    border: 2px solid var(--tc-accent);
    background: color-mix(in srgb, var(--tc-accent) 82%, #fff 18%);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
}

.tc-overview-bar.is-muted {
    background:
        repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.06) 0 8px, rgba(255, 255, 255, 0.02) 8px 16px),
        rgba(0, 0, 0, 0.12);
    border-style: dashed;
}

.tc-overview-segment {
    position: relative;
    min-height: 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    overflow: hidden;
    border: 1px solid transparent;
}

.tc-overview-segment::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: calc(0.12 + (var(--tc-level, 0) * 0.75));
    background: linear-gradient(180deg, color-mix(in srgb, var(--tc-accent) 78%, white), var(--tc-accent));
}

.tc-overview-segment.has-start::after {
    content: '';
    position: absolute;
    top: 2px;
    bottom: 2px;
    left: 50%;
    width: 2px;
    transform: translateX(-50%);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.95);
}

.tc-overview-segment.is-loop {
    border-color: color-mix(in srgb, var(--tc-accent) 72%, white);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.tc-overview-segment.is-loop:not(.is-active)::before {
    opacity: 0.18;
}

.tc-overview-segment:not(.is-active)::before {
    opacity: 0;
}

.tc-overview-segment.is-empty {
    background: transparent;
    border-color: transparent;
}

.tc-overview-segment.is-empty::before {
    display: none;
}

html.light-theme .tc-panel {
    box-shadow: 0 12px 24px rgba(30, 41, 59, 0.08);
}

.tc-panel.is-muted {
    filter: saturate(0.45);
}

html.light-theme .tc-select,
html.light-theme .tc-overview-bar,
html.light-theme .tc-tool-btn,
html.light-theme .tc-palette-grid,
html.light-theme .tc-mute-btn {
    background: rgba(255, 255, 255, 0.78);
}

html.light-theme .tc-volume-popover {
    background: var(--bg-card);
}

@media (max-width: 720px) {
    .tc-panel {
        padding: 14px;
    }

    .tc-headbar {
        flex-wrap: wrap;
    }

    .tc-copy {
        flex: 1 1 180px;
        min-width: 140px;
    }

    .tc-overview-text {
        flex: 0 1 96px;
    }

    .tc-overview-bar {
        flex-basis: 220px;
    }

    .tc-palette {
        grid-column: 1 / -1;
        justify-self: end;
    }

    .tc-palette-grid {
        right: auto;
        left: 0;
        width: min(296px, calc(100vw - 64px));
    }

    .tc-volume-popover {
        right: auto;
        left: 0;
        width: min(230px, calc(100vw - 64px));
    }
}

.tc-control-stack {
    display: grid;
    gap: 12px;
}