/* ══════════════════════════════════════════════════════════════
   Unified Grid Control — reusable step sequencer grid component
   ══════════════════════════════════════════════════════════════ */

/* ── Shell (contains toolbar + grid) ── */
.gc-shell {
    display: grid;
    gap: 8px;
}

.gc-control-stack {
    display: grid;
    gap: 8px;
}

.gc-sound-control {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--gc-border, var(--border));
    border-radius: var(--radius);
    background: color-mix(in srgb, var(--gc-surface, var(--surface, var(--bg-surface))) 82%, transparent);
}

.gc-sound-control-label {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted, #8888a8);
}

.gc-sound-control-select {
    min-width: 180px;
    padding: 7px 10px;
    border: 1px solid var(--gc-border, var(--border));
    border-radius: 10px;
    background: rgba(255,255,255,0.03);
    color: var(--text, #eef0ff);
    font: inherit;
    font-size: 0.8rem;
    transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease;
}

.gc-sound-control-select:hover,
.gc-sound-control-select:focus {
    border-color: var(--gc-accent, var(--accent));
    outline: none;
}

/* ── Outer wrapper ── */
.gc-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--gc-border, var(--border));
    border-radius: var(--radius);
    background: var(--gc-surface, var(--surface, var(--bg-surface)));
    overflow: hidden;
    user-select: none;
    max-height: var(--gc-max-height, 520px);
}

/* ── Horizontal minimap (top) ── */
.gc-hmap {
    display: flex;
    height: 14px;
    background: var(--gc-surface, var(--bg-surface, #181a24));
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    flex-shrink: 0;
}
.gc-hmap-cell {
    flex: 1;
    min-width: 0;
    border-right: 1px solid rgba(255,255,255,0.03);
    transition: background 0.1s;
}
.gc-hmap-cell.has-notes {
    background: var(--gc-accent, var(--accent));
    opacity: 0.5;
}
.gc-hmap-cell:nth-child(4n+1) {
    border-left: 1px solid rgba(255,255,255,0.06);
}
.gc-hmap-viewport {
    position: absolute;
    top: 0;
    height: 14px;
    background: rgba(255,255,255,0.08);
    border: 1px solid var(--gc-accent, var(--accent));
    border-radius: 1px;
    pointer-events: none;
    transition: left 0.1s, width 0.1s;
}

/* ── Main area: vminimap + grid ── */
.gc-main {
    display: flex;
    flex: 1;
    min-height: 0;
    overflow: hidden;
    position: relative;
}

/* ── Vertical minimap (left) ── */
.gc-vmap {
    width: 12px;
    background: var(--gc-surface, var(--bg-surface, #181a24));
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    cursor: pointer;
    overflow: hidden;
}
.gc-vmap-cell {
    flex: 1;
    border-bottom: 1px solid rgba(255,255,255,0.03);
    transition: background 0.1s;
}
.gc-vmap-cell.has-notes {
    background: var(--gc-accent, var(--accent));
    opacity: 0.5;
}

/* ── Scrollable grid area ── */
.gc-scroll {
    flex: 1;
    overflow: auto;
    position: relative;
}

/* ── CSS Grid layout ── */
.gc-grid {
    display: grid;
    min-width: max-content;
    padding: 0;
}

/* ── Step number header ── */
.gc-step-num {
    font-size: 0.6rem;
    font-family: var(--font-mono, monospace);
    color: var(--text-dim, #5e5e80);
    text-align: center;
    padding: 2px 0;
    line-height: 1;
    border-bottom: 1px solid var(--border);
}
.gc-step-num.gc-beat-mark {
    color: var(--text-muted, #8888a8);
    font-weight: 600;
}

/* ── Row label ── */
.gc-label {
    display: flex;
    align-items: center;
    padding: 0 6px;
    font-size: 0.7rem;
    font-weight: 600;
    font-family: var(--font-mono, monospace);
    color: var(--text-muted, #8888a8);
    background: var(--gc-surface, var(--bg-surface, #181a24));
    border-right: 2px solid var(--border);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    cursor: pointer;
    min-height: 24px;
}
.gc-label:hover {
    color: var(--text);
    background: var(--bg-hover, #262940);
}
.gc-label.gc-label-sharp {
    color: var(--text-dim);
    font-size: 0.62rem;
}
.gc-label.gc-label-root {
    color: var(--gc-accent, var(--accent));
    font-weight: 700;
}

/* ── Grid cell ── */
.gc-cell {
    min-height: 24px;
    border: 1px solid var(--border);
    border-radius: 2px;
    cursor: pointer;
    transition: background 0.08s, border-color 0.08s;
    background: var(--bg, #0f1117);
    position: relative;
    overflow: visible;
}
.gc-cell:hover {
    background: rgba(99, 102, 241, 0.08);
    border-color: var(--border-light, #353853);
}
.gc-cell.gc-active {
    background: transparent;
    border-color: transparent;
    box-shadow: none;
    z-index: 2;
}
.gc-cell.gc-active::before {
    content: '';
    position: absolute;
    inset: -3px -1px;
    background: color-mix(in srgb, var(--gc-accent, var(--accent)) 90%, white 10%);
    border: 1px solid color-mix(in srgb, var(--gc-accent, var(--accent)) 78%, black 22%);
    box-shadow: 0 4px 10px color-mix(in srgb, var(--gc-accent, var(--accent)) 28%, transparent);
    pointer-events: none;
}
.gc-cell.gc-note-start {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    border-right: none;
}
.gc-cell.gc-note-start::before {
    border-radius: 5px;
}
.gc-cell.gc-note-start.gc-has-hold::before {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}
.gc-cell.gc-note-hold {
    opacity: 1;
    border-radius: 0;
    border-left: none;
}
.gc-cell.gc-note-hold::before {
    border-radius: 0;
    border-left: none;
    inset: -3px -1px;
}
.gc-cell.gc-has-hold {
    border-right: none;
}
.gc-cell.gc-note-hold:not(.gc-last-hold) {
    border-right: none;
}
.gc-cell.gc-last-hold {
    border-top-right-radius: 2px;
    border-bottom-right-radius: 2px;
}
.gc-cell.gc-last-hold::before {
    border-top-right-radius: 5px;
    border-bottom-right-radius: 5px;
}
.gc-cell.gc-beat-start {
    margin-left: 2px;
}
.gc-cell.gc-active.gc-beat-start {
    margin-left: 0;
}
.gc-cell.gc-active.gc-beat-start::before {
    left: -3px;
}
.gc-cell.gc-playing {
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.25);
}
.gc-cell.gc-active.gc-playing,
.gc-cell.gc-note-hold.gc-playing {
    filter: brightness(1.3);
}
.gc-cell.gc-active.gc-playing::before,
.gc-cell.gc-note-hold.gc-playing::before {
    box-shadow: 0 4px 12px color-mix(in srgb, var(--gc-accent, var(--accent)) 35%, transparent), inset 0 0 0 1px rgba(255,255,255,0.28);
}
/* Scale highlighting — only for inactive cells */
.gc-cell.gc-in-scale:not(.gc-active) {
    background: color-mix(in srgb, var(--gc-accent, var(--accent)) 10%, transparent);
    border-color: color-mix(in srgb, var(--gc-accent, var(--accent)) 18%, var(--border-light, transparent));
}
.gc-cell.gc-root-row:not(.gc-active) {
    background: color-mix(in srgb, var(--gc-accent, var(--accent)) 18%, transparent);
    border-color: color-mix(in srgb, var(--gc-accent, var(--accent)) 30%, var(--border-light, transparent));
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--gc-accent, var(--accent)) 18%, transparent);
}
.gc-cell.gc-out-of-scale:not(.gc-active) {
    background: color-mix(in srgb, var(--bg-hover, #262940) 42%, transparent);
    border-color: color-mix(in srgb, var(--bg-hover, #262940) 55%, var(--border-light, transparent));
}

/* ── Resize handle ── */
.gc-resize-handle {
    position: absolute;
    right: -2px;
    top: 0;
    bottom: 0;
    width: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: rgba(255,255,255,0.7);
    background: rgba(0,0,0,0.25);
    border-radius: 0 3px 3px 0;
    cursor: ew-resize;
    z-index: 5;
    opacity: 0;
    transition: opacity 0.12s;
    pointer-events: auto;
    line-height: 1;
}
.gc-resize-handle.gc-visible {
    opacity: 1;
}
.gc-resize-handle.gc-dragging {
    opacity: 1;
    background: rgba(0,0,0,0.45);
    color: #fff;
}

/* ── Expand arrows ── */
.gc-expand-zone {
    position: absolute;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 14;
    pointer-events: none;
}
.gc-expand-zone.gc-expand-right {
    right: 0;
    top: 20px;
    bottom: 0;
    width: 36px;
}
.gc-expand-zone.gc-expand-up {
    top: 14px; /* below hmap */
    left: 12px; /* past vmap */
    right: 0;
    height: 36px;
}
.gc-expand-zone.gc-expand-down {
    bottom: 0;
    left: 12px;
    right: 0;
    height: 36px;
}
.gc-expand-btn {
    pointer-events: auto;
    width: 32px;
    height: 26px;
    background: var(--gc-accent, var(--accent));
    border: 2px solid rgba(255,255,255,0.2);
    border-radius: var(--radius, 8px);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
    transition: opacity 0.2s, transform 0.2s, background 0.2s;
}
.gc-expand-zone:hover .gc-expand-btn {
    opacity: 0.7;
}
.gc-expand-btn:hover {
    opacity: 1 !important;
    transform: scale(1.12);
    background: var(--accent-light, #857dff);
}
.gc-expand-btn svg {
    pointer-events: none;
    width: 14px;
    height: 14px;
}

/* ── Loop overlay ── */
.gc-loop-overlay {
    position: absolute;
    top: 0;
    pointer-events: none;
    z-index: 12;
    display: none;
}
.gc-loop-overlay.gc-loop-active {
    display: block;
}
.gc-loop-region {
    position: absolute;
    top: 0;
    bottom: 0;
    background: rgba(99, 102, 241, 0.06);
    border-left: 2px solid var(--gc-accent, var(--accent));
    border-right: 2px solid var(--gc-accent, var(--accent));
    pointer-events: none;
}
.gc-loop-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 12px;
    cursor: ew-resize;
    pointer-events: auto;
    z-index: 13;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 2px;
}
.gc-loop-handle.gc-loop-start {
    left: -6px;
}
.gc-loop-handle.gc-loop-end {
    right: -6px;
}
.gc-loop-handle-bar {
    width: 4px;
    height: 16px;
    background: var(--gc-accent, var(--accent));
    border-radius: 2px;
    opacity: 0.6;
    transition: opacity 0.15s;
}
.gc-loop-handle:hover .gc-loop-handle-bar {
    opacity: 1;
}

/* ── Playhead ── */
.gc-playhead {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gc-accent, var(--accent));
    z-index: 11;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s;
}
.gc-playhead.gc-playhead-visible {
    opacity: 0.7;
}

/* ══════════════════════════════════════════════════════════════
   GridToolbar — shared control bar
   ══════════════════════════════════════════════════════════════ */
.gc-toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    background: var(--bg-card, #1e2030);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 6px;
    flex-wrap: wrap;
}

/* Buttons */
.gc-tb-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-surface, #181a24);
    color: var(--text);
    cursor: pointer;
    font-size: 0.78rem;
    font-family: var(--font);
    transition: background 0.15s, border-color 0.15s, color 0.15s;
    white-space: nowrap;
}
.gc-tb-btn:hover {
    background: var(--bg-hover, #262940);
    border-color: var(--border-light);
}
.gc-tb-btn svg {
    flex-shrink: 0;
}

.gc-tb-field {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-surface, #181a24);
    min-height: 34px;
}

.gc-tb-field-label {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-muted, #8888a8);
    white-space: nowrap;
}

.gc-tb-select {
    min-width: 170px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg);
    color: var(--text);
    font: inherit;
    font-size: 0.8rem;
    padding: 6px 10px;
}

.gc-tb-select:hover,
.gc-tb-select:focus {
    border-color: var(--gc-accent, var(--accent));
    outline: none;
}

/* Play active state */
.gc-tb-play.gc-tb-active {
    background: var(--gc-accent, var(--accent));
    border-color: var(--gc-accent, var(--accent));
    color: #fff;
}

/* Loop active state */
.gc-tb-loop.gc-tb-active {
    background: var(--gc-accent, var(--accent));
    border-color: var(--gc-accent, var(--accent));
    color: #fff;
}

/* Record button */
.gc-tb-record {
    color: var(--text-muted);
}
.gc-tb-record.gc-tb-count-in {
    background: color-mix(in srgb, var(--warning, #e6a800) 16%, var(--bg-card, #1e2030));
    border-color: color-mix(in srgb, var(--warning, #e6a800) 52%, var(--border));
    color: var(--warning, #e6a800);
}
.gc-tb-record.gc-tb-recording {
    background: var(--danger, #ff6b6b);
    border-color: var(--danger, #ff6b6b);
    color: #fff;
    animation: gc-rec-pulse 1s ease-in-out infinite;
}
@keyframes gc-rec-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Clear confirm state */
.gc-tb-clear.gc-tb-confirm {
    background: var(--danger, #ff6b6b);
    border-color: var(--danger, #ff6b6b);
    color: #fff;
}

/* Diatonize confirmation popover */
.gc-tb-dia-wrap {
    position: relative;
}
.gc-dia-popover {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    z-index: 20;
    display: none;
    width: 240px;
    padding: 14px;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: var(--bg-card, #1e2030);
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.28);
    text-align: center;
}
.gc-dia-popover.is-open {
    display: block;
}
.gc-dia-message {
    font-size: 0.78rem;
    color: var(--text-muted, #8888a8);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 700;
}
.gc-dia-key {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--gc-accent, var(--accent, #8b5cf6));
    margin-bottom: 8px;
}
.gc-dia-hint {
    font-size: 0.72rem;
    color: var(--text-muted, #8888a8);
    line-height: 1.4;
    margin-bottom: 12px;
}
.gc-dia-actions {
    display: flex;
    gap: 8px;
    justify-content: center;
}
.gc-dia-cancel,
.gc-dia-ok {
    padding: 6px 16px;
    border-radius: 8px;
    border: 1px solid var(--border);
    font: inherit;
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}
.gc-dia-cancel {
    background: transparent;
    color: var(--text-muted, #8888a8);
}
.gc-dia-cancel:hover {
    background: rgba(255,255,255,0.05);
}
.gc-dia-ok {
    background: var(--gc-accent, var(--accent, #8b5cf6));
    border-color: var(--gc-accent, var(--accent, #8b5cf6));
    color: #fff;
}
.gc-dia-ok:hover {
    filter: brightness(1.15);
}

/* Spacer */
.gc-tb-spacer {
    flex: 1;
}

/* ══════════════════════════════════════════════════════════════
   InstrumentControl — collapsible piano keyboard
   ══════════════════════════════════════════════════════════════ */
.gc-instrument {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-card, #1e2030);
    margin-bottom: 6px;
    overflow: hidden;
}

/* Header */
.gc-inst-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 5px 10px;
    background: var(--bg-surface, #181a24);
    border-bottom: 1px solid var(--border);
}
.gc-inst-oct {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.78rem;
    color: var(--text-muted);
}
.gc-inst-oct label {
    font-weight: 600;
}
.gc-inst-oct-select {
    padding: 2px 6px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg);
    color: var(--text);
    font-size: 0.75rem;
}
.gc-inst-hint {
    font-size: 0.65rem;
    color: var(--text-dim);
}
.gc-inst-close {
    width: 26px;
    height: 26px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}
.gc-inst-close:hover {
    background: var(--danger, #ff6b6b);
    color: #fff;
}

/* Piano keys container */
.gc-inst-keys {
    display: flex;
    position: relative;
    height: 110px;
    padding: 0;
    user-select: none;
}

/* White keys */
.gc-key-white {
    flex: 1;
    min-width: 0;
    background: #f0f0f0;
    border: 1px solid #c0c0c0;
    border-top: none;
    border-radius: 0 0 4px 4px;
    cursor: pointer;
    position: relative;
    z-index: 1;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    transition: background 0.06s;
}
.gc-key-white:hover {
    background: #dde0ff;
}
.gc-key-white.gc-key-root {
    background: color-mix(in srgb, var(--gc-accent, var(--accent)) 22%, #fff);
    border-color: color-mix(in srgb, var(--gc-accent, var(--accent)) 38%, #c0c0c0);
}
.gc-key-white.gc-key-in-scale {
    background: color-mix(in srgb, var(--gc-accent, var(--accent)) 10%, #fff);
    border-color: color-mix(in srgb, var(--gc-accent, var(--accent)) 18%, #c0c0c0);
}
.gc-key-white.gc-key-out-of-scale {
    background: color-mix(in srgb, var(--bg-hover, #262940) 28%, #f0f0f0);
}
.gc-key-white.gc-key-active {
    background: var(--gc-accent, var(--accent));
}

/* Black keys */
.gc-key-black {
    width: 0;
    flex: 0 0 0;
    overflow: visible;
    position: relative;
    z-index: 2;
}
.gc-key-black::after {
    content: '';
    display: block;
    position: absolute;
    top: 0;
    left: -12px;
    width: 24px;
    height: 68px;
    background: #222;
    border-radius: 0 0 3px 3px;
    border: 1px solid #111;
    border-top: none;
    cursor: pointer;
    transition: background 0.06s;
    z-index: 2;
    pointer-events: auto;
}
.gc-key-black:hover::after {
    background: #444;
}
.gc-key-black.gc-key-root::after {
    background: color-mix(in srgb, var(--gc-accent, var(--accent)) 70%, #111);
    border-color: color-mix(in srgb, var(--gc-accent, var(--accent)) 55%, #111);
}
.gc-key-black.gc-key-in-scale::after {
    background: color-mix(in srgb, var(--gc-accent, var(--accent)) 30%, #151515);
    border-color: color-mix(in srgb, var(--gc-accent, var(--accent)) 22%, #111);
}
.gc-key-black.gc-key-out-of-scale::after {
    background: #222;
}
.gc-key-black.gc-key-active::after {
    background: var(--gc-accent, var(--accent));
}

/* Key label (note name inside white key) */
.gc-key-label {
    font-size: 0.55rem;
    color: #888;
    padding-bottom: 4px;
    pointer-events: none;
    font-family: var(--font-mono, monospace);
}

/* Light theme overrides */
html.light-theme .gc-key-white {
    background: #fff;
    border-color: #d0d0d0;
}
html.light-theme .gc-key-white:hover {
    background: #e8e8ff;
}
html.light-theme .gc-key-white.gc-key-root {
    background: color-mix(in srgb, var(--gc-accent, var(--accent)) 18%, #fff);
}
html.light-theme .gc-key-white.gc-key-in-scale {
    background: color-mix(in srgb, var(--gc-accent, var(--accent)) 8%, #fff);
}
html.light-theme .gc-key-white.gc-key-out-of-scale {
    background: color-mix(in srgb, var(--bg-hover, #e2e2ea) 38%, #fff);
}
html.light-theme .gc-key-black::after {
    background: #333;
}
html.light-theme .gc-key-black.gc-key-root::after {
    background: color-mix(in srgb, var(--gc-accent, var(--accent)) 58%, #1f1f1f);
}
html.light-theme .gc-key-black.gc-key-in-scale::after {
    background: color-mix(in srgb, var(--gc-accent, var(--accent)) 24%, #333);
}
html.light-theme .gc-key-black:hover::after {
    background: #555;
}

/* Piano button in toolbar */
.gc-tb-piano.gc-tb-active {
    background: var(--gc-accent, var(--accent));
    border-color: var(--gc-accent, var(--accent));
    color: #fff;
}

/* ═══ Drum Pads ═══ */
.gc-inst-pads {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 8px 10px;
}
.gc-pad {
    flex: 1 1 calc(33.33% - 6px);
    min-width: 80px;
    height: 56px;
    border: 2px solid var(--gc-accent, var(--accent));
    border-radius: 8px;
    background: color-mix(in srgb, var(--gc-accent, var(--accent)) 15%, var(--bg-card, #1e2030));
    color: var(--text, #e0e0e0);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    font-family: inherit;
    transition: background 0.06s, transform 0.06s;
    user-select: none;
}
.gc-pad:hover {
    background: color-mix(in srgb, var(--gc-accent, var(--accent)) 30%, var(--bg-card, #1e2030));
}
.gc-pad:active,
.gc-pad.gc-pad-active {
    background: var(--gc-accent, var(--accent));
    color: #fff;
    transform: scale(0.95);
}
.gc-pad-label {
    font-size: 0.78rem;
    font-weight: 600;
    pointer-events: none;
}
.gc-pad-key {
    font-size: 0.55rem;
    opacity: 0.5;
    font-family: var(--font-mono, monospace);
    pointer-events: none;
}
html.light-theme .gc-pad {
    background: color-mix(in srgb, var(--gc-accent, var(--accent)) 10%, #fff);
}
html.light-theme .gc-pad:hover {
    background: color-mix(in srgb, var(--gc-accent, var(--accent)) 22%, #fff);
}
html.light-theme .gc-pad:active,
html.light-theme .gc-pad.gc-pad-active {
    background: var(--gc-accent, var(--accent));
    color: #fff;
}

/* ═══ Presets Panel ═══ */
.gc-presets {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-card, #1e2030);
    margin-bottom: 6px;
    overflow: hidden;
}
.gc-presets-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 10px;
    background: var(--bg-surface, #181a24);
    border-bottom: 1px solid var(--border);
}
.gc-presets-title {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text);
}
.gc-presets-filter {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.76rem;
    color: var(--text-muted);
}
.gc-presets-select {
    padding: 3px 8px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg);
    color: var(--text);
    font-size: 0.76rem;
    font-family: var(--font);
}
.gc-presets-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 8px;
    padding: 10px;
}
.gc-presets-footer {
    display: flex;
    justify-content: center;
    padding: 0 10px 10px;
}
.gc-presets-more {
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--bg-surface, #181a24);
    color: var(--text-muted);
    padding: 5px 12px;
    cursor: pointer;
    font-size: 0.74rem;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.gc-presets-more:hover {
    background: color-mix(in srgb, var(--gc-accent, var(--accent)) 10%, var(--bg-surface, #181a24));
    border-color: color-mix(in srgb, var(--gc-accent, var(--accent)) 32%, var(--border));
    color: var(--text);
}
.gc-preset-btn {
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-surface, #181a24);
    color: var(--text);
    padding: 10px 11px;
    text-align: left;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 3px;
    transition: background 0.15s, border-color 0.15s, transform 0.15s;
}
.gc-preset-btn:hover {
    background: color-mix(in srgb, var(--gc-accent, var(--accent)) 12%, var(--bg-surface, #181a24));
    border-color: color-mix(in srgb, var(--gc-accent, var(--accent)) 45%, var(--border));
    transform: translateY(-1px);
}
.gc-preset-name {
    font-size: 0.8rem;
    font-weight: 600;
}
.gc-preset-meta {
    font-size: 0.68rem;
    color: var(--text-dim);
}