/**
 * TransportBar Component Styles
 * Professional transport controls with progress bar, scrubbing, and loop controls
 */

.transport-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    /* Remove fixed calculation, let it grow */
    height: auto;
    z-index: 1000;
    background: transparent;
    color: #fff;
    user-select: none;
    contain: layout paint style;
    isolation: isolate;
}

/* Main panel container (buttons and controls) */
.topbar-panel {
    width: 100%;
    min-height: 60px;
    /* FIXED: Decouple from dynamic variable to prevent resize feedback loop */
    height: auto;
    background: var(--glass-surface);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 6px 14px;
    gap: 10px;
    flex-wrap: wrap;
    row-gap: 8px;
    transition: background 0.3s ease, border-color 0.3s ease;
    position: relative;
    z-index: 20;
}

/* Primary Row Wrapper */
.topbar-primary-row {
    display: flex;
    width: 100%;
    align-items: center;
    gap: 8px 10px;
    flex-wrap: wrap;
}

/* File Ops Group (Back, Load, Upload) - Keep horizontal */
.topbar-brand {
    display: inline-flex;
    align-items: center;
    flex: 0 0 auto;
    margin-right: 8px;
}

.topbar-brand-logo {
    display: block;
    width: auto;
    height: 50px;
    max-width: min(30vw, 240px);
    object-fit: contain;
    filter: drop-shadow(0 0 6px rgba(41, 141, 255, 0.35));
}

.topbar-brand picture {
    width: 100%;
    display: flex;
    justify-content: center;
}

.file-ops-group {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.dev-identity-strip {
    box-sizing: border-box;
    height: 28px;
    max-width: 150px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 0 9px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(111, 207, 151, 0.36);
    background: rgba(30, 92, 58, 0.36);
    color: rgba(226, 255, 238, 0.92);
    font-family: var(--font-mono);
    font-size: var(--font-xs);
    font-weight: 700;
    letter-spacing: 0;
    cursor: pointer;
    white-space: nowrap;
    flex: 0 0 auto;
}

.dev-identity-strip:hover {
    border-color: rgba(111, 207, 151, 0.72);
    background: rgba(30, 116, 68, 0.48);
    color: #fff;
}

.dev-identity-strip:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.dev-identity-strip__label {
    color: rgba(181, 238, 204, 0.72);
    text-transform: uppercase;
    font-size: 10px;
}

.dev-identity-strip__value {
    overflow: hidden;
    text-overflow: ellipsis;
    font-variant-numeric: tabular-nums;
}

.dev-identity-strip--copied {
    border-color: rgba(56, 145, 255, 0.72);
    background: rgba(56, 145, 255, 0.24);
    color: #fff;
}

.topbar-panel::-webkit-scrollbar {
    display: none;
}

/* Panel sections */
.panel-left,
.panel-center,
.panel-drawer,
.panel-right {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex: 0 0 auto;
    max-width: 100%;
    min-width: 0;
}

.panel-left {
    position: relative;
}

/* Panel Ordering (Desktop Default) */
.panel-left {
    order: 1;
}

.topbar-status-panel {
    order: 2;
    margin: 0 var(--space-3);
}

.panel-center {
    order: 3;
}

.panel-drawer {
    order: 4;
}

.panel-right {
    order: 5;
}

/* Panel Center: Main Transport (Play/Stop) - Always visible, prioritized */
.panel-center {
    justify-content: center;
    flex: 0 0 auto;
    margin: 0 var(--space-3);
}

.sketch-record-button {
    color: #ff6f7d;
    transition: background 0.15s ease, box-shadow 0.15s ease, color 0.15s ease;
}

.sketch-record-button[hidden] {
    display: none !important;
}

.sketch-record-button:disabled {
    color: rgba(255, 110, 125, 0.35);
    cursor: not-allowed;
}

.sketch-record-button--active,
.sketch-record-button[aria-pressed="true"] {
    background: rgba(255, 70, 92, 0.25);
    color: #ffd0d6;
    box-shadow: 0 0 8px rgba(255, 70, 92, 0.6);
    animation: sketch-record-pulse 1.05s ease-in-out infinite;
}

@keyframes sketch-record-pulse {
    0%, 100% { box-shadow: 0 0 6px rgba(255, 70, 92, 0.5); }
    50% { box-shadow: 0 0 14px rgba(255, 70, 92, 1); }
}

/* History toggle — single entry point for the rolling MIDI buffer overlay.
   The button lives in the top bar in all modes; sketch mode bumps its accent
   so the rolling-buffer affordance stands out next to the lane controls. */
.history-toggle-button--sketch {
    color: var(--text-1);
    box-shadow: inset 0 0 0 1px var(--border-strong);
}

.history-toggle-button--sketch:hover {
    box-shadow: inset 0 0 0 1px var(--accent);
}

.history-toggle-button--active,
.history-toggle-button[aria-pressed="true"] {
    background: var(--accent-bg-soft);
    color: var(--accent);
    box-shadow: var(--accent-glow);
}

.panel-drawer {
    /* Secondary controls (Pitch, Speed, Input) */
    flex: 1 1 100%;
    width: 100%;
    justify-content: flex-start;
    align-items: center;
    gap: var(--space-2);
    padding: 6px 0 0;
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
    background: transparent;
}

.panel-right {
    flex: 0 0 auto;
    justify-content: flex-end;
    max-width: 100%;
    /* margin-left: auto; REMOVED: Drawer takes the space now */
}

/* Updated Status Panel (In Flow) */
.topbar-status-panel {
    position: relative;
    top: auto;
    left: auto;
    transform: none;
    height: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: auto;
    z-index: 1;
    /* Ensure above bg */
    flex: 0 0 auto;
}

.musical-position-display {
    /* Fixed top-bar footprint: bar/beat/sixteenth/signature text plus five gaps, padding, borders, and badge chrome. */
    --musical-position-inline-size: calc(34ch + (var(--space-2) * 6) + (var(--space-4) * 2) + 24px);
    box-sizing: border-box;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 7px var(--space-4);
    border-radius: var(--radius-lg);
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
    font-size: var(--font-lg);
    font-family: var(--font-mono);
    font-weight: 600;
    letter-spacing: 0;
    color: var(--text-1);
    transition: opacity 150ms ease, background var(--dur-base) var(--ease-out),
        border-color var(--dur-base) var(--ease-out);
    white-space: nowrap;
    inline-size: var(--musical-position-inline-size);
    flex: 0 0 var(--musical-position-inline-size);
}

.musical-position-display.inactive {
    opacity: 0.5;
    background: transparent;
    border-color: transparent;
}

.musical-position-display .pos-separator {
    color: rgba(255, 255, 255, 0.3);
    font-size: 0.8em;
    inline-size: 1ch;
    text-align: center;
}

.musical-position-display .pos-bar,
.musical-position-display .pos-beat,
.musical-position-display .pos-sixteenth {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.musical-position-display .pos-bar {
    inline-size: 9ch;
}

.musical-position-display .pos-beat {
    inline-size: 7ch;
}

.musical-position-display .pos-sixteenth {
    inline-size: 4ch;
}

.musical-position-display .pos-bpm {
    inline-size: 7ch;
    text-align: right;
    font-variant-numeric: tabular-nums;
    color: var(--text-2);
}

/* Time Signature Badge */
.time-signature-display {
    box-sizing: border-box;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--border-default);
    border-radius: var(--radius-sm);
    padding: 2px 6px;
    font-size: var(--font-sm);
    color: var(--text-2);
    margin-left: var(--space-2);
    inline-size: calc(5ch + 12px);
    min-width: calc(5ch + 12px);
    font-variant-numeric: tabular-nums;
}

/* 
 * CONTROL GROUPS 
 */
.control-group {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-lg);
    padding: var(--space-1) var(--space-2);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.control-group-label {
    font-size: var(--font-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-3);
    margin: 0 var(--space-2);
    pointer-events: none;
}

.song-control-group {
    flex: 0 1 auto;
    min-width: 0;
    gap: 6px;
}

.song-control-group .ui-select {
    height: 28px;
    min-width: 0;
    max-width: 132px;
    font-size: var(--font-sm);
}

.song-instrument-select {
    width: 128px;
}

.song-preset-select {
    width: 116px;
}

.song-control-group .song-level {
    flex: 0 0 76px;
    width: 76px;
}

.song-level-value {
    min-width: 42px;
    font-size: var(--font-xs);
    text-align: right;
    white-space: nowrap;
}

/* Wait Button Special State */
.wait-for-note-button.waiting {
    background: var(--status-warn-bg-soft);
    color: var(--status-warn);
    animation: pulse-waiting 2s infinite;
}

@keyframes pulse-waiting {
    0% { box-shadow: 0 0 0 0 rgba(255, 171, 64, 0.4); }
    70% { box-shadow: 0 0 0 6px rgba(255, 171, 64, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 171, 64, 0); }
}

/* 
 * TRANSPOSE & PITCH CONTROLS 
 */
.pitch-control {
    display: flex;
    align-items: center;
    gap: 2px;
}

.pitch-btn {
    width: 28px;
    height: 28px;
    border: 1px solid var(--border-default);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--dur-base) var(--ease-out),
                color var(--dur-base) var(--ease-out),
                border-color var(--dur-base) var(--ease-out);
    padding: 0;
}

.pitch-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    border-color: var(--border-strong);
}

.pitch-btn:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.pitch-display {
    min-width: 32px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-md);
    font-weight: 600;
    color: var(--text-1);
    background: var(--surface-2);
    border-radius: var(--radius-sm);
    margin: 0 2px;
    cursor: pointer;
    font-variant-numeric: tabular-nums;
}

.pitch-display:hover {
    color: #fff;
    background: var(--border-default);
}

.pitch-display.nonzero {
    color: var(--accent);
    background: rgba(56, 145, 255, 0.12);
}

.pitch-display:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

/* 
 * SPEED CONTROLS 
 */
.speed-control-group {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    background: var(--surface-2);
    border-radius: var(--radius-pill);
    padding: var(--space-1) var(--space-3) var(--space-1) var(--space-1);
}

.tempo-control {
    display: flex;
    align-items: center;
    gap: 1px;
}

.tempo-btn {
    width: var(--control-h-sm);
    height: var(--control-h-sm);
    border-radius: 50%;
    border: none;
    background: var(--border-default);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-lg);
    transition: background var(--dur-base) var(--ease-out);
}

.tempo-btn:hover {
    background: var(--border-strong);
}

.tempo-btn:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.tempo-display {
    min-width: 45px;
    text-align: center;
    font-size: var(--font-md);
    font-variant-numeric: tabular-nums;
    font-weight: 600;
    color: var(--text-1);
    cursor: pointer;
    user-select: none;
    touch-action: none;
}

.tempo-display.dragging {
    color: var(--accent);
    cursor: pointer;
}

/* Visual Speed Slider (Zoom) */
.zoom-control {
    display: flex;
    align-items: center;
    gap: 8px;
    --range-width: 60px;
}

.zoom-icon {
    opacity: 0.5;
    width: 14px;
    height: 14px;
    fill: currentColor;
}

.metronome-control-group {
    gap: var(--space-1);
    padding-right: var(--space-2);
}

.metronome-toggle-button {
    min-width: 46px;
    height: 28px;
    padding: 0 10px;
    border-radius: var(--radius-sm);
}

.metronome-toggle-button.active {
    background: rgba(56, 145, 255, 0.3);
    border-color: rgba(56, 145, 255, 0.55);
    color: #fff;
}

.metronome-level {
    width: 86px;
    flex: 0 0 86px;
}

.metronome-level-value {
    min-width: 50px;
    text-align: right;
    font-size: var(--font-xs);
    color: var(--text-2);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.metronome-subdivision-group {
    display: inline-flex;
    gap: 2px;
    padding: 2px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border-default);
    background: rgba(255, 255, 255, 0.04);
}

.metronome-subdivision-button {
    height: 24px;
    min-width: 38px;
    border: none;
    border-radius: calc(var(--radius-pill) - 2px);
    background: transparent;
    color: var(--text-3);
    font-size: var(--font-xs);
    font-weight: 600;
    letter-spacing: 0.2px;
    cursor: pointer;
    transition: background var(--dur-base) var(--ease-out),
                color var(--dur-base) var(--ease-out);
}

.metronome-subdivision-button:hover {
    color: var(--text-2);
}

.metronome-subdivision-button.active {
    background: rgba(56, 145, 255, 0.28);
    color: #fff;
}

.metronome-subdivision-button:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.popover-wrapper {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.popover-panel {
    position: absolute;
    top: calc(100% + 14px);
    right: 0;
    display: none;
    min-width: 214px;
    padding: 12px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(17, 23, 32, 0.96);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    box-shadow: 0 18px 38px rgba(0, 0, 0, 0.46);
    z-index: 60;
}

.popover-panel.active {
    display: flex;
    align-items: center;
    gap: 10px;
}

.popover-panel .ui-slider {
    --range-width: 132px;
    flex: 0 0 132px;
    margin: 8px 0;
}

.popover-panel .volume-value {
    min-width: 44px;
    text-align: right;
}

.zoom-popover-panel {
    min-width: 190px;
}


.topbar-brand {
    border: 0;
    background: transparent;
    box-shadow: none;
    border-radius: 0;
    overflow: visible;
}

.topbar-brand-logo {
    filter: drop-shadow(0 0 5px rgba(41, 141, 255, 0.35));
}

.topbar-panel .control-group-label,
.topbar-panel .snap-title,
.song-level-trigger-value,
.metronome-level-trigger-value {
    display: none;
}

.topbar-panel .control-group,
.topbar-panel .file-ops-group,
.topbar-panel .transport-main-group,
.topbar-panel .tempo-control-group,
.topbar-panel .song-control-group,
.topbar-panel .metronome-control-group,
.topbar-panel .zoom-control-group,
.topbar-panel .loop-controls,
.topbar-panel .wait-for-note-button,
.topbar-panel .settings-button {
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    overflow: visible;
}

.topbar-panel .tempo-control,
.topbar-panel .pitch-control,
.topbar-panel .loop-wrapper,
.topbar-panel .snap-segmented,
.topbar-panel .snap-segment-track,
.topbar-panel .loop-bars-group,
.topbar-panel .metronome-subdivision-group {
    display: inline-flex;
    flex-wrap: nowrap;
    align-items: center;
}

.transport-utility-dock {
    position: fixed;
    right: 12px;
    bottom: calc(var(--statusbar-height, 40px) + var(--keyboard-height, 150px) + 12px);
    z-index: 1201;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 6px;
    pointer-events: none;
}

.transport-utility-dock .topbar-shortcuts-mount,
.transport-utility-dock .dev-identity-strip,
.topbar-panel .topbar-shortcuts-mount {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: auto;
    height: auto;
    pointer-events: auto;
}

.topbar-panel .dev-identity-strip {
    position: absolute;
    left: 0;
    top: -4px;
    z-index: 2;
    height: 18px;
    max-width: 42px;
    padding: 0 5px;
    gap: 0;
    font-size: 9px;
    justify-content: center;
}

.topbar-panel .dev-identity-strip__value {
    display: none;
}

.transport-utility-dock .dev-identity-strip {
    height: 28px;
    max-width: min(150px, calc(100vw - 24px));
    padding: 0 9px;
    gap: 6px;
    font-size: var(--font-xs);
    justify-content: flex-end;
}

.transport-utility-dock .dev-identity-strip__value {
    display: inline-block;
}

.snap-segment-btn,
.loop-bar-btn {
    box-sizing: border-box;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-2);
    font-family: var(--font-mono);
    font-size: var(--font-xs);
    font-weight: 750;
    letter-spacing: 0;
    cursor: pointer;
    transition: background var(--dur-fast) var(--ease-out),
                border-color var(--dur-fast) var(--ease-out),
                color var(--dur-fast) var(--ease-out),
                box-shadow var(--dur-fast) var(--ease-out);
}

.snap-segment-btn:hover,
.loop-bar-btn:hover {
    border-color: rgba(120, 170, 255, 0.42);
    background: rgba(56, 145, 255, 0.16);
    color: #fff;
}

.snap-segment-btn.active,
.loop-bar-btn.active {
    border-color: rgba(56, 145, 255, 0.62);
    background: rgba(56, 145, 255, 0.34);
    color: #fff;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.snap-segment-btn:focus-visible,
.loop-bar-btn:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

@media (min-width: 1500px) {
    .topbar-panel {
        height: 64px;
        min-height: 64px;
        padding: 10px 12px;
        gap: 6px;
        flex-wrap: nowrap;
        align-items: center;
        overflow: visible;
    }

    .panel-left,
    .panel-center,
    .panel-drawer,
    .panel-right,
    .topbar-status-panel {
        height: 44px;
        gap: 6px;
        margin: 0;
        flex-wrap: nowrap;
        align-items: center;
        max-width: none;
    }

    .panel-left { flex: 0 0 196px; width: 196px; order: 1; }
    .topbar-brand,
    .topbar-brand-logo { flex-basis: 58px; width: 58px; }
    .topbar-brand-logo { height: 28px; }
    .file-ops-group { flex: 0 0 132px; width: 132px; }
    .panel-center,
    .transport-main-group { flex: 0 0 112px; width: 112px; order: 2; }
    .topbar-status-panel { flex: 0 0 90px; width: 90px; order: 3; }
    .musical-position-display { inline-size: 90px; flex: 0 0 90px; }
    .panel-drawer { flex: 0 0 354px; width: 354px; order: 4; padding: 0; border: 0; background: transparent; }
    .panel-right { flex: 1 1 712px; width: auto; min-width: 712px; order: 5; justify-content: flex-end; }

    .topbar-panel .control-group,
    .topbar-panel .file-ops-group,
    .topbar-panel .transport-main-group,
    .topbar-panel .tempo-control-group,
    .topbar-panel .song-control-group,
    .topbar-panel .metronome-control-group,
    .topbar-panel .zoom-control-group,
    .topbar-panel .loop-controls,
    .topbar-panel .wait-for-note-button,
    .topbar-panel .settings-button {
        height: 44px;
        min-height: 44px;
        padding: 6px;
        gap: 4px;
        border-radius: var(--radius-lg);
    }

    .transport-main-group { gap: 5px; }
    .tempo-control-group { flex: 0 0 98px; width: 98px; }
    .tempo-control,
    .pitch-control { gap: 4px; }
    .tempo-btn { width: 24px; }
    .tempo-display { width: 30px; min-width: 30px; }
    .panel-drawer > .control-group[aria-label="Transpose"],
    .panel-drawer > .control-group[aria-label="Master Pitch"] { flex: 0 0 122px; width: 122px; }
    .pitch-btn,
    .pitch-btn.octave-down,
    .pitch-btn.octave-up { width: 18px; }
    .pitch-display { width: 22px; min-width: 22px; }

    .song-control-group { flex: 0 0 216px; width: 216px; }
    .song-instrument-select { width: 54px; flex-basis: 54px; }
    .song-preset-select { width: 82px; flex-basis: 82px; }
    .song-instrument-edit-btn { width: 25px; height: 27px; flex: 0 0 25px; }
    .song-level-trigger { width: 28px; flex-basis: 28px; }
    .metronome-control-group { flex: 0 0 144px; width: 144px; }
    .metronome-toggle-button { width: 27px; min-width: 27px; }
    .metronome-level-trigger { width: 25px; flex-basis: 25px; }
    .metronome-subdivision-button { width: 22px; min-width: 22px; }
    .zoom-control-group { flex: 0 0 40px; width: 40px; padding-left: 5px; padding-right: 5px; }
    .zoom-trigger { width: 28px; }
    .loop-controls { flex: 0 0 210px; width: 210px; }
    .loop-wrapper { gap: 4px; padding-left: 0; border-left: 0; }
    .snap-segment-track,
    .loop-bars-group { gap: 2px; padding: 0; border: 0; background: transparent; }
    .snap-segment-btn { width: 28px; min-width: 28px; padding: 0; font-size: 9px; }
    .loop-bar-btn { width: 18px; min-width: 18px; padding: 0; }
    .loop-bars-input { width: 25px; height: 27px; padding: 0 2px; font-size: 11px; }
    .wait-for-note-button { flex: 0 0 62px; width: 62px; padding: 0 7px; }
    .settings-button { flex: 0 0 30px; width: 30px; padding: 0; }

    .ui-button,
    .pitch-btn,
    .pitch-display,
    .tempo-btn,
    .tempo-display,
    .ui-select,
    .ui-field,
    .metronome-subdivision-button,
    .snap-segment-btn,
    .loop-bar-btn {
        height: 27px;
        border-radius: var(--radius-sm);
        font-size: 10px;
        font-weight: 750;
    }

    .ui-button { width: 27px; }
    .ui-button.has-label { gap: 3px; padding: 0 5px; font-size: 10px; }
    .ui-button .button-label { font-size: 10px; font-weight: 750; }
    .ui-button svg { width: 14px; height: 14px; }
    .file-ops-group .load-song-button { width: 34px; }
    .file-ops-group .upload-button { width: 33px; }
    .file-ops-group .history-toggle-button { width: 53px; }
    .file-ops-group .history-toggle-button .icon { display: none; }
    .transport-main-group .play-button { width: 33px; border-radius: var(--radius-pill); }
    .musical-position-display { height: 27px; gap: 0; padding: 0 7px; font-size: 15px; font-weight: 850; justify-content: center; border-radius: var(--radius-sm); }
    .musical-position-display .pos-bar { inline-size: 4ch; text-align: right; }
    .musical-position-display .pos-beat,
    .musical-position-display .pos-sixteenth { inline-size: 2ch; text-align: right; }
    .musical-position-display .pos-separator { inline-size: 1ch; font-size: 1em; }
    .time-signature-display { display: none; }
    .song-control-group .ui-select { max-width: none; height: 27px; padding-left: 6px; padding-right: 18px; font-size: 10px; font-weight: 750; }
    .wait-for-note-button .icon { display: none; }
    .wait-for-note-button .button-label { font-size: 10px; font-weight: 750; }
}

@media (min-width: 1700px) {
    .topbar-panel { gap: 10px; }
    .panel-left { flex-basis: 234px; width: 234px; }
    .topbar-brand,
    .topbar-brand-logo { flex-basis: 88px; width: 88px; }
    .file-ops-group { flex-basis: 140px; width: 140px; }
    .panel-center,
    .transport-main-group { flex-basis: 116px; width: 116px; }
    .topbar-status-panel { flex-basis: 94px; width: 94px; }
    .musical-position-display { inline-size: 92px; flex-basis: 92px; }
    .panel-drawer { flex-basis: 382px; width: 382px; }
    .tempo-control-group { flex-basis: 104px; width: 104px; }
    .panel-drawer > .control-group[aria-label="Transpose"],
    .panel-drawer > .control-group[aria-label="Master Pitch"] { flex-basis: 132px; width: 132px; }
    .pitch-btn,
    .pitch-btn.octave-down,
    .pitch-btn.octave-up { width: 20px; }
    .panel-right { flex-basis: 790px; width: auto; min-width: 790px; }
    .song-control-group { flex-basis: 262px; width: 262px; }
    .song-instrument-select { width: 64px; flex-basis: 64px; }
    .song-preset-select { width: 116px; flex-basis: 116px; }
    .metronome-control-group { flex-basis: 152px; width: 152px; }
    .loop-controls { flex-basis: 220px; width: 220px; }
    .snap-segment-btn { width: 30px; min-width: 30px; }
}

@media (max-width: 1499px) {
    .topbar-panel {
        height: auto;
        min-height: 64px;
        max-height: none;
        padding: 8px 12px;
        flex-wrap: wrap;
        overflow: visible;
        align-content: flex-start;
        justify-content: center;
        gap: 8px;
        scrollbar-width: none;
    }

    .topbar-panel::-webkit-scrollbar { display: none; }

    .panel-left,
    .panel-center,
    .topbar-status-panel,
    .panel-drawer,
    .panel-right {
        height: 44px;
        gap: 6px;
        margin: 0;
        flex-wrap: nowrap;
        align-items: center;
        justify-content: center;
        max-width: 100%;
    }

    .panel-left { flex: 0 0 184px; width: 184px; order: 1; }
    .topbar-brand,
    .topbar-brand-logo { flex-basis: 46px; width: 46px; }
    .topbar-brand-logo { height: 22px; }
    .file-ops-group { flex: 0 0 132px; width: 132px; }
    .panel-center,
    .transport-main-group { flex: 0 0 112px; width: 112px; order: 2; }
    .topbar-status-panel { flex: 0 0 90px; width: 90px; order: 3; }
    .musical-position-display { inline-size: 90px; flex: 0 0 90px; }
    .panel-drawer { flex: 0 0 388px; width: 388px; order: 4; padding: 0; border: 0; background: transparent; }
    .panel-right { flex: 1 1 calc(100% - 24px); width: calc(100% - 24px); order: 5; overflow: visible; }

    .topbar-panel .control-group,
    .topbar-panel .file-ops-group,
    .topbar-panel .transport-main-group,
    .topbar-panel .tempo-control-group,
    .topbar-panel .song-control-group,
    .topbar-panel .metronome-control-group,
    .topbar-panel .zoom-control-group,
    .topbar-panel .loop-controls,
    .topbar-panel .wait-for-note-button,
    .topbar-panel .settings-button {
        height: 44px;
        min-height: 44px;
        padding: 6px;
        gap: 4px;
        border-radius: var(--radius-lg);
    }

    .tempo-control-group { flex: 0 0 104px; width: 104px; }
    .panel-drawer > .control-group[aria-label="Transpose"],
    .panel-drawer > .control-group[aria-label="Master Pitch"] { flex: 0 0 136px; width: 136px; }
    .pitch-btn,
    .pitch-btn.octave-down,
    .pitch-btn.octave-up { width: 20px; }
    .pitch-display { width: 24px; min-width: 24px; }
    .song-control-group { flex: 0 0 224px; width: 224px; }
    .song-instrument-select { width: 56px; flex-basis: 56px; }
    .song-preset-select { width: 84px; flex-basis: 84px; }
    .song-level-trigger { width: 28px; flex-basis: 28px; }
    .metronome-control-group { flex: 0 0 148px; width: 148px; }
    .metronome-subdivision-button { width: 22px; min-width: 22px; }
    .zoom-control-group { flex: 0 0 40px; width: 40px; }
    .loop-controls { flex: 0 0 232px; width: 232px; }
    .wait-for-note-button { flex: 0 0 58px; width: 58px; padding: 0 7px; }
    .settings-button { flex: 0 0 30px; width: 30px; padding: 0; }

    .ui-button,
    .pitch-btn,
    .pitch-display,
    .tempo-btn,
    .tempo-display,
    .ui-select,
    .ui-field,
    .metronome-subdivision-button,
    .snap-segment-btn,
    .loop-bar-btn {
        height: 27px;
        border-radius: var(--radius-sm);
        font-size: 10px;
        font-weight: 750;
    }

    .tempo-control,
    .pitch-control { gap: 4px; }
    .tempo-btn { width: 24px; }
    .tempo-display { width: 30px; min-width: 30px; }
    .metronome-toggle-button { width: 27px; min-width: 27px; }
    .metronome-level-trigger { width: 25px; flex-basis: 25px; }
    .zoom-trigger,
    .loop-button { width: 28px; }
    .snap-segment-track,
    .loop-bars-group { gap: 2px; padding: 0; border: 0; background: transparent; }
    .snap-segment-btn { width: 30px; min-width: 30px; padding: 0; font-size: 9px; }
    .loop-bar-btn { width: 18px; min-width: 18px; padding: 0; }
    .loop-bars-input { width: 25px; height: 27px; padding: 0 2px; font-size: 11px; }
    .musical-position-display { height: 27px; gap: 0; padding: 0 7px; font-size: 15px; font-weight: 850; justify-content: center; }
    .musical-position-display .pos-bar { inline-size: 4ch; text-align: right; }
    .musical-position-display .pos-beat,
    .musical-position-display .pos-sixteenth { inline-size: 2ch; text-align: right; }
    .musical-position-display .pos-separator { inline-size: 1ch; font-size: 1em; }
    .time-signature-display { display: none; }
    .song-control-group .ui-select { max-width: none; height: 27px; padding-left: 6px; padding-right: 18px; font-size: 10px; font-weight: 750; }
    .wait-for-note-button .icon,
    .file-ops-group .history-toggle-button .icon { display: none; }
}

@media (min-width: 431px) and (max-width: 760px) {
    .topbar-panel { gap: 6px; }
    .panel-left { flex-basis: 184px; width: 184px; }
    .topbar-brand,
    .topbar-brand-logo { flex-basis: 54px; width: 54px; }
    .file-ops-group { flex-basis: 124px; width: 124px; }
    .panel-center,
    .transport-main-group { flex-basis: 116px; width: 116px; }
    .topbar-status-panel { flex-basis: 100px; width: 100px; }
    .musical-position-display { inline-size: 92px; flex-basis: 92px; }
    .panel-drawer,
    .panel-right { flex: 1 1 calc(100vw - 16px); width: calc(100vw - 16px); max-width: calc(100vw - 16px); flex-wrap: wrap; height: auto; }
    .topbar-panel .control-group,
    .topbar-panel .file-ops-group,
    .topbar-panel .transport-main-group,
    .topbar-panel .tempo-control-group,
    .topbar-panel .song-control-group,
    .topbar-panel .metronome-control-group,
    .topbar-panel .zoom-control-group,
    .topbar-panel .loop-controls,
    .topbar-panel .wait-for-note-button,
    .topbar-panel .settings-button { height: 40px; min-height: 40px; padding: 6px; gap: 3px; }
    .tempo-control-group { flex-basis: 98px; width: 98px; }
    .panel-drawer > .control-group[aria-label="Transpose"],
    .panel-drawer > .control-group[aria-label="Master Pitch"] { flex-basis: 136px; width: 136px; }
    .song-control-group { flex-basis: 210px; width: 210px; }
    .song-preset-select { width: 74px; flex-basis: 74px; }
    .metronome-control-group { flex-basis: 140px; width: 140px; }
    .metronome-subdivision-button { width: 20px; min-width: 20px; }
    .zoom-control-group { flex-basis: 34px; width: 34px; padding-left: 5px; padding-right: 5px; }
    .loop-controls { flex-basis: 212px; width: 212px; }
}

@media (max-width: 430px) {
    .topbar-panel { padding: 6px; gap: 4px; }
    .panel-drawer,
    .panel-right { gap: 4px; }
    .topbar-panel .control-group,
    .topbar-panel .file-ops-group,
    .topbar-panel .transport-main-group,
    .topbar-panel .tempo-control-group,
    .topbar-panel .song-control-group,
    .topbar-panel .metronome-control-group,
    .topbar-panel .zoom-control-group,
    .topbar-panel .loop-controls,
    .topbar-panel .wait-for-note-button,
    .topbar-panel .settings-button { height: 38px; min-height: 38px; padding: 5px; gap: 2px; }
    .panel-left { flex-basis: 149px; width: 149px; }
    .topbar-brand,
    .topbar-brand-logo { flex-basis: 34px; width: 34px; }
    .file-ops-group { flex-basis: 111px; width: 111px; }
    .file-ops-group .load-song-button,
    .file-ops-group .upload-button { width: 26px; }
    .file-ops-group .history-toggle-button,
    .sketch-library-handle--in-topbar { width: 24px; min-width: 24px; height: 24px; }
    .panel-center,
    .transport-main-group { flex-basis: 108px; width: 108px; }
    .transport-main-group .play-button { width: 30px; }
    .topbar-status-panel { flex-basis: 90px; width: 90px; }
    .musical-position-display { inline-size: 86px; flex-basis: 86px; height: 24px; font-size: 11px; padding-inline: 4px; }
    .panel-drawer,
    .panel-right { flex: 1 1 calc(100vw - 12px); width: calc(100vw - 12px); max-width: calc(100vw - 12px); flex-wrap: wrap; height: auto; }
    .tempo-control-group { flex-basis: 80px; width: 80px; }
    .tempo-btn { width: 20px; }
    .tempo-display { width: 28px; min-width: 28px; font-size: 11px; }
    .panel-drawer > .control-group[aria-label="Transpose"],
    .panel-drawer > .control-group[aria-label="Master Pitch"] { flex-basis: 138px; width: 138px; }
    .pitch-btn { width: 20px; }
    .pitch-btn.octave-down,
    .pitch-btn.octave-up { width: 24px; }
    .pitch-display { width: 24px; min-width: 24px; }
    .song-control-group { flex-basis: 170px; width: 170px; }
    .song-instrument-select { width: 42px; flex-basis: 42px; }
    .song-preset-select { width: 58px; flex-basis: 58px; }
    .song-control-group .ui-select { height: 24px; }
    .song-instrument-edit-btn,
    .song-level-trigger { width: 22px; height: 24px; flex-basis: 22px; }
    .metronome-control-group { flex-basis: 132px; width: 132px; }
    .metronome-toggle-button,
    .metronome-level-trigger { width: 22px; min-width: 22px; }
    .metronome-subdivision-button { width: 19px; min-width: 19px; font-size: 7.5px; }
    .zoom-control-group { flex-basis: 32px; width: 32px; padding-left: 5px; padding-right: 5px; }
    .zoom-trigger { width: 22px; }
    .loop-controls { flex-basis: 192px; width: 192px; }
    .loop-button { width: 22px; }
    .snap-segment-btn { width: 27px; min-width: 27px; font-size: 8px; }
    .loop-bar-btn { min-width: 16px; width: 16px; }
    .loop-bars-input { width: 20px; height: 24px; }
    .wait-for-note-button { flex-basis: 50px; width: 50px; }
    .settings-button { flex-basis: 26px; width: 26px; }
}

@media (max-width: 360px) {
    .topbar-panel { padding: 5px; gap: 3px; }
    .panel-left { flex-basis: 144px; width: 144px; }
    .topbar-brand,
    .topbar-brand-logo { flex-basis: 34px; width: 34px; }
    .file-ops-group { flex-basis: 106px; width: 106px; }
    .panel-center,
    .transport-main-group { flex-basis: 102px; width: 102px; }
    .topbar-status-panel { flex-basis: 84px; width: 84px; }
    .musical-position-display { inline-size: 80px; flex-basis: 80px; font-size: 10px; padding-inline: 3px; }
    .panel-drawer,
    .panel-right { flex-basis: calc(100vw - 10px); width: calc(100vw - 10px); max-width: calc(100vw - 10px); }
    .tempo-control-group { flex-basis: 76px; width: 76px; }
    .tempo-btn { width: 18px; }
    .tempo-display { width: 26px; min-width: 26px; font-size: 10px; }
    .panel-drawer > .control-group[aria-label="Transpose"],
    .panel-drawer > .control-group[aria-label="Master Pitch"] { flex-basis: 122px; width: 122px; }
    .pitch-btn,
    .pitch-btn.octave-down,
    .pitch-btn.octave-up { width: 18px; font-size: 7.5px; }
    .pitch-display { width: 22px; min-width: 22px; font-size: 10px; }
    .song-control-group { flex-basis: 158px; width: 158px; }
    .song-preset-select { width: 50px; flex-basis: 50px; }
    .metronome-control-group { flex-basis: 132px; width: 132px; }
    .loop-controls { flex-basis: 172px; width: 172px; }
    .snap-segment-btn { width: 25px; min-width: 25px; }
    .loop-bar-btn { width: 15px; min-width: 15px; }
}

/* 
 * PROGRESS BAR (Below Topbar)
 */
.progress-bar-container {
    --timeline-label-height: 18px;
    position: relative;
    margin-left: var(--mixer-reserved-left, 0px);
    width: calc(
        100%
        - var(--mixer-reserved-left, 0px)
        - var(--mixer-reserved-right, 0px)
    );
    height: var(--transport-progress-height, 45px);
    background-color: rgb(25, 25, 30);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    cursor: pointer;
    overflow: hidden;
    contain: layout paint style;
    flex-shrink: 0;
    /* Prevent crushing */
}

.progress-bar-container.pan-hover,
.progress-bar-container.pan-hover .progress-bar-bg,
.progress-bar-container.pan-hover .progress-fill,
.progress-bar-container.pan-hover .timeline-canvas,
.progress-bar-container.pan-hover .time-signature-marker-hitbox,
.progress-bar-container.pan-modifier,
.progress-bar-container.pan-modifier .progress-bar-bg,
.progress-bar-container.pan-modifier .progress-fill,
.progress-bar-container.pan-modifier .timeline-canvas,
.progress-bar-container.pan-modifier .time-signature-marker-hitbox {
    cursor: grab;
}

.progress-bar-container.pan-active,
.progress-bar-container.pan-active .progress-bar-bg,
.progress-bar-container.pan-active .progress-fill,
.progress-bar-container.pan-active .timeline-canvas,
.progress-bar-container.pan-active .time-signature-marker-hitbox,
.progress-bar-container.pan-active .loop-grab-strip {
    cursor: grabbing;
}

.progress-bar-container.pan-hover .progress-zoom-badge,
.progress-bar-container.pan-modifier .progress-zoom-badge,
.progress-bar-container.pan-active .progress-zoom-badge {
    cursor: zoom-out;
}

.progress-bar-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.05);
    z-index: 0;
}

.progress-fill {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background-color: rgb(56, 145, 255);
    transform-origin: left center;
    transform: scaleX(0);
    transition: transform 100ms ease-out;
    will-change: transform;
    z-index: 0;
    opacity: 0.08;
}

.timeline-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.progress-bar-container .timeline-canvas.timeline-static {
    z-index: 1;
}

.progress-bar-container .timeline-canvas.timeline-moving {
    z-index: 2;
}

.timeline-labels {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: var(--timeline-label-height);
    pointer-events: none;
    color: rgba(255, 255, 255, 0.4);
    font-size: 10px;
    font-family: monospace;
    z-index: 3;
}

.measure-markers {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 4;
}

.time-signature-marker-hitbox {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 14px;
    transform: translateX(-50%);
    background: transparent;
    cursor: pointer;
    pointer-events: auto;
}

/* Playhead */
.playhead {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #3891ff;
    box-shadow: 0 0 8px rgba(56, 145, 255, 0.6);
    z-index: 10;
    pointer-events: none;
    will-change: transform;
}

.progress-zoom-badge {
    position: absolute;
    left: 8px;
    bottom: 8px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
    height: 22px;
    padding: 0 8px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 999px;
    background: rgba(16, 18, 23, 0.78);
    color: rgba(255, 255, 255, 0.86);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.22);
    backdrop-filter: blur(10px);
    font-size: 11px;
    font-weight: 600;
    line-height: 1;
    cursor: zoom-out;
    /* Keep the badge above static/moving timeline layers but below drag handles. */
    z-index: 12;
    pointer-events: auto;
    user-select: none;
    -webkit-user-select: none;
}

.progress-zoom-badge[hidden] {
    display: none;
}

.progress-zoom-badge:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring), 0 4px 12px rgba(0, 0, 0, 0.22);
}

.progress-zoom-badge-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 12px;
    height: 12px;
    color: rgba(56, 145, 255, 0.96);
    flex: 0 0 auto;
}

.progress-zoom-badge-icon svg {
    width: 12px;
    height: 12px;
    display: block;
    fill: currentColor;
}

.progress-zoom-badge-label {
    display: inline-block;
    min-width: 0;
    white-space: nowrap;
}

.progress-zoom-badge.is-pulsing {
    animation: var(--progress-zoom-badge-pulse-name, progress-zoom-badge-pulse-a) 420ms cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes progress-zoom-badge-pulse-a {
    0% {
        transform: scale(0.96);
        box-shadow: 0 0 0 rgba(56, 145, 255, 0);
    }
    38% {
        transform: scale(1.04);
        box-shadow: 0 0 0 6px rgba(56, 145, 255, 0.14);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.22);
    }
}

@keyframes progress-zoom-badge-pulse-b {
    0% {
        transform: scale(0.96);
        box-shadow: 0 0 0 rgba(56, 145, 255, 0);
    }
    38% {
        transform: scale(1.04);
        box-shadow: 0 0 0 6px rgba(56, 145, 255, 0.14);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.22);
    }
}

/* Resize Handle */
.timeline-resize-handle {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 6px;
    cursor: ns-resize;
    cursor: row-resize;
    z-index: 20;
    transition: background 0.1s;
}

.timeline-resize-handle:hover,
.timeline-resize-handle:focus {
    background: rgba(56, 145, 255, 0.3);
}

/* Loop staging preview (Shift+drag) and active loop region */
.loop-staging-overlay {
    position: absolute;
    top: 0;
    height: 100%;
    background: rgba(255, 255, 255, 0.25);
    border: 1px dashed rgba(255, 255, 255, 0.35);
    border-radius: 4px;
    display: none;
    pointer-events: none;
    z-index: 3;
}

.loop-overlay {
    position: absolute;
    top: 0;
    height: 100%;
    background: rgba(255, 165, 0, 0.4);
    border: 1px solid rgba(255, 165, 0, 0.5);
    border-radius: 4px;
    display: none;
    pointer-events: none;
    overflow: hidden;
    z-index: 3;
}

.loop-grab-strip {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 24px;
    background: rgba(255, 140, 0, 0.18);
    border-top-left-radius: 4px;
    border-top-right-radius: 4px;
    cursor: grab;
    pointer-events: auto;
    z-index: 3;
    transition: background 0.12s ease;
}

.loop-grab-strip:hover {
    background: rgba(255, 140, 0, 0.32);
    box-shadow: inset 0 -1px 0 rgba(255, 200, 100, 0.5);
}

.loop-grab-strip:active {
    cursor: grabbing;
    background: rgba(255, 110, 0, 0.45);
    transition: none;
}

.loop-boundary-fill {
    position: absolute;
    top: 0;
    bottom: 0;
    background: rgba(255, 165, 0, 0.1);
    display: none;
    pointer-events: none;
}

.loop-handles {
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
    display: none;
    pointer-events: none;
    z-index: 4;
}

.loop-handle {
    position: absolute;
    top: -4px;
    width: 8px;
    height: 16px;
    background: #ff8c00;
    border: 1px solid #ff6600;
    border-radius: 4px;
    cursor: ew-resize;
    pointer-events: all;
    transform: translateX(-50%);
    transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.loop-handle:hover {
    background: #ffa500;
    transform: translateX(-50%) scale(1.1);
}

.loop-handle:active {
    background: #ff6600;
}

.loop-handle.loop-start::before {
    content: 'A';
    position: absolute;
    top: -18px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 10px;
    color: #ff8c00;
    font-weight: bold;
}

.loop-handle.loop-end::before {
    content: 'B';
    position: absolute;
    top: -18px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 10px;
    color: #ff8c00;
    font-weight: bold;
}

/* ────────────────────────────────────────────────────────────
   ROLLING MIDI CAPTURE OVERLAY (Sketch Progress Buffer)
   The Capture button in the top bar swaps the normal progress
   bar fill/timeline for this overlay: a red-tinted canvas that
   visualises the 10-minute rolling MIDI capture, with HUD,
   playhead, write band, and pointer selection.
   ──────────────────────────────────────────────────────────── */
.sketch-progress-buffer {
    position: absolute;
    inset: 0;
    z-index: 8;
    background: linear-gradient(180deg,
        rgba(40, 12, 16, 0.96) 0%,
        rgba(28, 10, 14, 0.96) 100%);
    border-top: 1px solid rgba(255, 70, 92, 0.35);
    border-bottom: 1px solid rgba(255, 70, 92, 0.35);
    overflow: hidden;
    contain: layout paint style;
    cursor: crosshair;
    box-shadow: inset 0 0 24px rgba(255, 70, 92, 0.18);
    isolation: isolate;
}

.sketch-progress-buffer[hidden] {
    display: none !important;
}

/* When the buffer overlay is up, hide the underlying timeline
   layers so the Capture surface is the only thing the user sees
   in the progress lane. The normal layers come back the instant
   we toggle off. */
.progress-bar-container--sketch-buffer .progress-bar-bg,
.progress-bar-container--sketch-buffer .progress-fill,
.progress-bar-container--sketch-buffer .timeline-canvas,
.progress-bar-container--sketch-buffer .timeline-labels,
.progress-bar-container--sketch-buffer .measure-markers,
.progress-bar-container--sketch-buffer .playhead {
    opacity: 0;
    pointer-events: none;
}

.progress-bar-container--sketch-buffer {
    background-color: rgb(22, 10, 12);
}

.sketch-progress-buffer__canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    z-index: 1;
}

.sketch-progress-buffer__write-band {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 24px;
    background: linear-gradient(90deg,
        rgba(255, 70, 92, 0) 0%,
        rgba(255, 70, 92, 0.32) 70%,
        rgba(255, 70, 92, 0.55) 100%);
    pointer-events: none;
    z-index: 3;
    will-change: transform;
}

.sketch-progress-buffer__playhead {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #ff4661;
    box-shadow: 0 0 10px rgba(255, 70, 92, 0.75);
    z-index: 4;
    pointer-events: none;
    will-change: transform;
}

.sketch-progress-buffer__selection {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 2;
}

.sketch-progress-buffer__selection[hidden] {
    display: none;
}

.sketch-progress-buffer__selection-fill {
    position: absolute;
    top: 0;
    bottom: 0;
    background: rgba(255, 70, 92, 0.18);
    border-left: 1px solid rgba(255, 70, 92, 0.7);
    border-right: 1px solid rgba(255, 70, 92, 0.7);
    will-change: transform, width;
}

.sketch-progress-buffer__hud {
    position: absolute;
    top: 6px;
    left: 10px;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    z-index: 5;
    pointer-events: none;
    font-family: var(--font-mono);
    font-size: var(--font-sm);
    letter-spacing: 0.04em;
}

.sketch-progress-buffer__chip {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: var(--radius-pill);
    background: rgba(255, 70, 92, 0.18);
    border: 1px solid rgba(255, 70, 92, 0.45);
    color: #ffd0d6;
    text-transform: uppercase;
    font-weight: 600;
}

.sketch-progress-buffer__status {
    color: rgba(255, 208, 214, 0.8);
}

.sketch-progress-buffer__clip-label {
    color: rgba(255, 208, 214, 0.95);
    padding: 2px 6px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-sm);
}

.sketch-progress-buffer__clip-label[hidden] {
    display: none;
}

.sketch-progress-buffer__drag-ghost {
    position: absolute;
    top: 0;
    bottom: 0;
    background: rgba(255, 70, 92, 0.25);
    border: 1px dashed rgba(255, 200, 210, 0.8);
    pointer-events: none;
    z-index: 6;
    will-change: transform, width;
}

.sketch-progress-buffer__drag-ghost[hidden] {
    display: none;
}

.sketch-progress-buffer__ghost-meta {
    position: absolute;
    top: 4px;
    left: 6px;
    font-family: var(--font-mono);
    font-size: var(--font-xs);
    color: #ffd0d6;
    background: rgba(0, 0, 0, 0.35);
    padding: 1px 5px;
    border-radius: var(--radius-sm);
}

.sketch-progress-buffer--committed {
    animation: sketch-progress-buffer-commit 450ms ease-out;
}

@keyframes sketch-progress-buffer-commit {
    0% { box-shadow: inset 0 0 0 0 rgba(255, 70, 92, 0.6); }
    40% { box-shadow: inset 0 0 0 6px rgba(255, 70, 92, 0.55); }
    100% { box-shadow: inset 0 0 24px rgba(255, 70, 92, 0.18); }
}