.ck-shell {
    display: block;
}

.ck-wrap {
    max-width: 620px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-family: Inter, Arial, sans-serif;
    color: var(--cg-ink);
}

.ck-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
}

.ck-modes,
.ck-actions {
    display: flex;
    gap: 8px;
}

.ck-btn {
    appearance: none;
    border: 1px solid var(--cg-line);
    background: var(--cg-panel);
    color: var(--cg-ink);
    border-radius: 8px;
    padding: 9px 14px;
    font: inherit;
    font-size: 0.9rem;
    font-weight: 800;
    cursor: pointer;
    transition: background 0.12s ease, color 0.12s ease, transform 0.12s ease;
}

.ck-btn:hover {
    border-color: var(--cg-teal);
    transform: translateY(-1px);
}

.ck-btn.ck-on {
    background: var(--cg-ink);
    color: #fff;
    border-color: var(--cg-ink);
}

.ck-icon {
    width: 40px;
    padding: 9px 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.ck-icon svg {
    width: 20px;
    height: 20px;
}

.ck-statusbar {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
    min-height: 1.4em;
}

.ck-status {
    font-weight: 800;
    font-size: 1.02rem;
}

.ck-score {
    color: var(--cg-muted);
    font-weight: 700;
    font-size: 0.88rem;
}

.ck-board {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    width: 100%;
    aspect-ratio: 1;
    border: 5px solid var(--cg-ink);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--cg-shadow);
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
    outline-offset: 3px;
}

.ck-cell {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ck-light {
    background: var(--cg-panel);
}

.ck-dark {
    background: var(--cg-green);
    cursor: pointer;
}

.ck-dark.ck-last {
    background: color-mix(in srgb, var(--cg-green) 72%, var(--cg-amber));
}

.ck-sel {
    box-shadow: inset 0 0 0 3px var(--cg-amber);
}

.ck-move {
    cursor: pointer;
}

.ck-move::after {
    content: '';
    position: absolute;
    width: 30%;
    height: 30%;
    border-radius: 50%;
    background: var(--cg-amber);
    opacity: 0.85;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.35);
}

.ck-move.ck-cap::after {
    background: var(--cg-red);
    width: 36%;
    height: 36%;
}

.ck-cursor {
    box-shadow: inset 0 0 0 3px var(--cg-blue);
}

.ck-sel.ck-cursor {
    box-shadow: inset 0 0 0 3px var(--cg-amber), inset 0 0 0 6px var(--cg-blue);
}

.ck-p {
    width: 78%;
    height: 78%;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(13px, 4vw, 30px);
    line-height: 1;
    box-shadow: inset 0 -5px 0 rgba(0, 0, 0, 0.28), inset 0 3px 3px rgba(255, 255, 255, 0.25), 0 2px 5px rgba(0, 0, 0, 0.4);
    pointer-events: none;
}

.ck-red {
    background: radial-gradient(circle at 35% 30%, #e0655f, var(--cg-red));
}

.ck-blk {
    background: radial-gradient(circle at 35% 30%, #4b565c, var(--cg-ink));
}

.ck-king {
    color: #ffd75e;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.ck-pop {
    animation: ck-pop 0.28s ease;
}

@keyframes ck-pop {
    0% { transform: scale(0.55); }
    65% { transform: scale(1.12); }
    100% { transform: scale(1); }
}

.ck-stats {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.ck-stat {
    background: var(--cg-panel);
    border: 1px solid var(--cg-line);
    border-radius: 8px;
    padding: 8px 16px;
    text-align: center;
    min-width: 84px;
}

.ck-stat span {
    display: block;
    color: var(--cg-muted);
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.ck-stat strong {
    display: block;
    font-size: 1.15rem;
}

.ck-overlay {
    position: fixed;
    inset: 0;
    background: rgba(20, 26, 24, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 18px;
    z-index: 200;
}

.ck-overlay[hidden] {
    display: none;
}

.ck-dialog {
    position: relative;
    background: var(--cg-panel);
    color: var(--cg-ink);
    border-radius: 12px;
    padding: 22px 24px;
    max-width: 460px;
    width: 100%;
    box-shadow: var(--cg-shadow);
}

.ck-dialog h2 {
    margin: 0 0 10px;
    font-size: 1.2rem;
}

.ck-dialog ul {
    margin: 0;
    padding-left: 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    color: var(--cg-ink);
    font-size: 0.92rem;
    line-height: 1.45;
}

.ck-close {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 34px;
    height: 34px;
    border: 1px solid var(--cg-line);
    border-radius: 8px;
    background: var(--cg-panel);
    color: var(--cg-ink);
    font-size: 1.2rem;
    font-weight: 800;
    cursor: pointer;
}

.ck-close:hover {
    border-color: var(--cg-red);
    color: var(--cg-red);
}

@media (max-width: 640px) {
    .ck-wrap {
        gap: 9px;
    }

    .ck-btn {
        padding: 8px 11px;
        font-size: 0.82rem;
    }

    .ck-icon {
        width: 36px;
        padding: 8px 0;
    }

    .ck-status {
        font-size: 0.94rem;
    }

    .ck-score {
        font-size: 0.8rem;
    }

    .ck-board {
        border-width: 4px;
    }

    .ck-stat {
        min-width: 70px;
        padding: 6px 10px;
    }

    .ck-stat strong {
        font-size: 1rem;
    }
}