/* N Queens — page-specific styles, built on the shared tokens in ../style.css
   (page shell, tabs, and two-column layout live in ../style.css as .game-page etc.) */

/* board + cells, shared shape between manual + watch boards */
.nq-board {
    --n: 8;
    display: grid;
    grid-template-columns: repeat(var(--n), 1fr);
    grid-template-rows: repeat(var(--n), 1fr);
    width: min(92vw, 420px);
    aspect-ratio: 1;
    border-radius: var(--radius);
    box-shadow: var(--inset-deep);
    overflow: hidden;
    background: var(--canvas-deep);
}

.nq-cell {
    position: relative;
    border: none;
    padding: 0;
    background: #fbfbfd;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(1.1rem, 6.5vw / var(--n, 8), 1.8rem);
    transition: background 0.1s ease;
}
.nq-cell.dark {
    background: var(--canvas-deep);
}
/* Watch Algorithm renders cells as plain divs (read-only, not tabbable);
   manual play uses buttons — only the interactive ones get a pointer + hover. */
button.nq-cell {
    cursor: pointer;
}
button.nq-cell:hover {
    background: var(--accent-soft);
}
.nq-cell:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: -2px;
    z-index: 2;
}

.nq-piece {
    color: var(--ink);
    line-height: 1;
}

.nq-cell.line-conflict {
    background-image: repeating-linear-gradient(
        135deg,
        var(--danger-soft),
        var(--danger-soft) 4px,
        transparent 4px,
        transparent 9px
    );
}
.nq-cell.attacked {
    outline: 2px dashed var(--danger);
    outline-offset: -2px;
}
.nq-cell.attacked .nq-piece {
    color: var(--danger);
}
.nq-warn {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--danger);
    color: #fff;
    font-size: 9px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* watch-mode cell states */
.nq-cell.testing {
    outline: 2px solid var(--warn);
    outline-offset: -2px;
    background: var(--warn-soft);
}
.nq-cell.accepted {
    background: var(--accent2-soft);
}
.nq-cell.accepted .nq-piece {
    color: var(--accent2);
}
.nq-cell.rejected {
    background: var(--danger-soft);
}
.nq-cell.rejected::after {
    content: "✕";
    position: absolute;
    color: var(--danger);
    font-size: 0.85em;
    font-weight: 800;
}
.nq-cell.ghost-removed {
    background: var(--danger-soft);
}
.nq-cell.ghost-removed .nq-piece {
    opacity: 0.45;
    color: var(--danger);
    animation: nq-fade-out 0.5s ease;
}
@keyframes nq-fade-out {
    0% {
        opacity: 1;
        transform: scale(1);
    }
    100% {
        opacity: 0.45;
        transform: scale(0.85);
    }
}

/* manual play status row */
.nq-status-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
    font-size: 0.8rem;
    color: var(--ink-muted);
}
.nq-status-row strong {
    color: var(--ink);
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
}

.nq-actions {
    display: flex;
    gap: 10px;
    width: 100%;
    max-width: 420px;
}

.nq-message {
    text-align: center;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    background: var(--canvas);
    box-shadow: var(--inset);
    color: var(--accent2);
    font-weight: 700;
    font-size: 0.88rem;
    width: 100%;
    max-width: 420px;
}
.nq-hint-msg {
    text-align: center;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    background: var(--canvas);
    box-shadow: var(--inset);
    color: var(--warn);
    font-size: 0.8rem;
    width: 100%;
    max-width: 420px;
}

/* watch panel */
.nq-status-msg {
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    background: var(--canvas);
    box-shadow: var(--inset);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--ink);
    width: 100%;
    max-width: 420px;
    min-height: 1.4em;
}
.nq-counters {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    justify-content: center;
    font-size: 0.76rem;
    color: var(--ink-muted);
}
.nq-counters strong {
    color: var(--accent);
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
}
.nq-watch-done {
    width: 100%;
    max-width: 420px;
    text-align: center;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    background: var(--canvas);
    box-shadow: var(--inset);
    color: var(--accent2);
    font-weight: 700;
    font-size: 0.85rem;
}