.board-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px;
    overflow: hidden;
}

.board {
    display: grid;
    grid-template-columns: repeat(15, 1fr);
    gap: var(--cell-gap);
    width: min(96vw, 96vh - 200px);
    height: min(96vw, 96vh - 200px);
    max-width: 600px;
    max-height: 600px;
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
    background: #0a0a1a;
    padding: 2px;
    border-radius: 4px;
}

.cell {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-surface);
    border-radius: 2px;
    font-size: clamp(8px, 2.2vw, 14px);
    font-weight: 700;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: background 0.1s;
    aspect-ratio: 1;
    overflow: hidden;
}

.cell .score-pip {
    position: absolute;
    bottom: 0;
    right: 1px;
    font-size: clamp(5px, 1.2vw, 8px);
    font-weight: 400;
    opacity: 0.7;
}

.cell--bonus-tw { background: var(--tw-color); }
.cell--bonus-dw { background: var(--dw-color); }
.cell--bonus-tl { background: var(--tl-color); }
.cell--bonus-dl { background: var(--dl-color); }
.cell--bonus-s  { background: var(--star-color); }

.cell--bonus-tw::after,
.cell--bonus-dw::after,
.cell--bonus-tl::after,
.cell--bonus-dl::after,
.cell--bonus-s::after {
    content: attr(data-bonus-label);
    font-size: clamp(5px, 1.3vw, 8px);
    font-weight: 600;
    color: rgba(255,255,255,0.8);
    pointer-events: none;
}

.cell--occupied {
    background: var(--tile-bg);
    color: var(--tile-text);
    box-shadow: inset 0 -2px 0 rgba(0,0,0,0.2), inset 0 1px 0 rgba(255,255,255,0.6);
    text-shadow: 0 1px 0 rgba(255,255,255,0.4);
}

.cell--pending {
    background: var(--tile-pending);
    color: var(--tile-text);
    box-shadow: 0 0 0 2px var(--primary), inset 0 -2px 0 rgba(0,0,0,0.15), inset 0 1px 0 rgba(255,255,255,0.5);
    text-shadow: 0 1px 0 rgba(255,255,255,0.4);
    cursor: grab;
}

.cell--drop-target {
    background: rgba(233, 69, 96, 0.3);
    box-shadow: inset 0 0 0 2px var(--primary);
}

.cell--word-clickable {
    cursor: pointer;
}

.cell--word-clickable:active {
    filter: brightness(0.85);
}