.sandbox-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    height: 100%;
    overflow: hidden;
    gap: 0;
    padding: 0;
    max-width: none;
    margin: 0;
}

.sandbox-sidebar {
    overflow-y: auto;
    padding: 1rem;
}

.sandbox-board-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    overflow: hidden;
}

.sandbox-board-wrap .unified-game-area {
    position: relative;
    aspect-ratio: 1;
    width: min(100%, 85vh);
    height: auto;
    max-height: min(100%, 85vh);
    margin: 0;
    flex-shrink: 0;
}

.sandbox-board-wrap .game-board,
#board-viewer-canvas {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 0;
    margin: 0;
}

.sandbox-palette {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin: 1rem 0;
}

.sandbox-palette-piece {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 6px;
    border: 1px solid var(--border-color, #444);
    background: var(--bg-secondary, #2a2a3e);
    cursor: pointer;
    font-size: 1.1rem;
}

.sandbox-palette-piece.selected {
    outline: 2px solid var(--accent, #7eb8ff);
}

.sandbox-mode-toggle {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.sandbox-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.sandbox-status {
    min-height: 2.5rem;
    font-size: 0.9rem;
    opacity: 0.85;
    margin-top: 0.75rem;
}

.sandbox-captured {
    margin: 0.75rem 0;
    display: grid;
    gap: 0.5rem;
}

.sandbox-captured-label {
    display: block;
    font-size: 0.75rem;
    opacity: 0.7;
    margin-bottom: 0.15rem;
}

.sandbox-captured-tray {
    min-height: 1.5rem;
    font-size: 1.1rem;
    letter-spacing: 0.15rem;
}

.replay-container {
    max-width: 720px;
    margin: 0 auto;
    padding: 1rem;
}

.replay-board-wrap {
    min-height: 480px;
    margin: 1rem 0;
}

.replay-board-wrap .unified-game-area {
    width: 100%;
    min-height: 480px;
    aspect-ratio: 1;
}

.replay-board-wrap .game-board {
    width: 100%;
    height: 100%;
    min-height: 0;
}

.replay-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.replay-scrubber {
    width: 100%;
}

.live-games-section {
    margin-bottom: 2rem;
}

.live-games-section h2 {
    margin-bottom: 0.75rem;
}

.live-games-feed .lobby-card {
    border-left: 3px solid var(--accent, #e74c3c);
}

.quick-match-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.quick-match-overlay.open {
    display: flex;
}

.quick-match-modal {
    background: var(--bg-secondary, #2a2a3e);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    max-width: 360px;
}

.quick-match-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #555;
    border-top-color: var(--accent, #7eb8ff);
    border-radius: 50%;
    animation: qm-spin 0.8s linear infinite;
    margin: 1rem auto;
}

@keyframes qm-spin {
    to { transform: rotate(360deg); }
}

.site-time-card-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

/* Time cards are the match buttons now; keep class for older markup if cached. */
button.site-time-card.site-quick-match-btn {
    font-size: inherit;
    padding: inherit;
    border-radius: 0;
    background-image:
        linear-gradient(180deg, rgba(30, 22, 16, 0.75), rgba(10, 8, 6, 0.9)),
        var(--sava-tex-stone, none);
    color: inherit;
    width: 100%;
}