/*!
 * Sequência Numérica — quebra-cabeça deslizante
 */

.puzzle {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--s-5);
    margin-top: var(--s-6);
}

.puzzle-board {
    position: relative;
    width: min(100%, 340px);
    aspect-ratio: var(--cols) / var(--rows);
    container-type: inline-size;
    border-radius: var(--radius);
    border: 1px solid var(--border-strong);
    background: color-mix(in srgb, var(--accent) 7%, var(--bg-soft));
    box-shadow: var(--shadow-md);
    touch-action: manipulation;
}

.puzzle-cells {
    position: absolute;
    inset: 0;
    display: grid;
    grid-template-columns: repeat(var(--cols), 1fr);
    grid-template-rows: repeat(var(--rows), 1fr);
    border-radius: inherit;
    overflow: hidden;
}

.puzzle-cells div {
    box-shadow: inset 0 0 0 1px var(--border);
    transition: background var(--dur) ease;
}

.puzzle-cells div.active {
    background: var(--accent-soft);
}

.puzzle-tile {
    position: absolute;
    top: 0;
    left: 0;
    display: grid;
    place-items: center;
    width: calc(100% / var(--cols));
    height: calc(100% / var(--rows));
    padding: 0;
    border: 0;
    background: none;
    cursor: grab;
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
    transform: translate(calc(var(--x, 0) * 100% + var(--dx, 0px)), calc(var(--y, 0) * 100% + var(--dy, 0px)));
    transition: transform 0.18s var(--ease);
}

/* Asterisco desenhado: as hastes ficam com o mesmo peso e altura dos números */
.puzzle-symbol {
    display: block;
    width: 0.71em;
    height: 0.71em;
    fill: none;
    overflow: visible;
}

/* Enquanto arrasta, a peça acompanha o dedo/mouse sem animação */
.puzzle-tile.dragging {
    z-index: 2;
    cursor: grabbing;
    transition: none;
}

.puzzle-tile.dragging span {
    transform: scale(1.04);
    box-shadow: 0 12px 22px rgba(10, 4, 5, 0.5);
}

.puzzle-tile span {
    display: grid;
    place-items: center;
    width: 82%;
    aspect-ratio: 1;
    border-radius: 50%;
    border: 0.26em solid #d92b2b;
    background: #fff8f7;
    color: #2a1012;
    font-family: var(--font-display);
    font-size: calc(30cqw / var(--cols));
    font-weight: 700;
    line-height: 1;
    box-shadow: 0 6px 14px rgba(10, 4, 5, 0.4);
    transition: transform 0.25s var(--ease), border-color 0.3s ease;
}

.puzzle-tile:hover span {
    transform: scale(1.06);
}

.puzzle-tile:active span {
    transform: scale(0.95);
}

.puzzle-tile:focus-visible {
    outline: none;
}

.puzzle-tile:focus-visible span {
    outline: 3px solid var(--accent);
    outline-offset: 3px;
}

.puzzle-board.solved .puzzle-tile {
    cursor: default;
}

.puzzle-board.solved .puzzle-tile span {
    border-color: #16a34a;
    animation: puzzle-pop 0.55s var(--ease) both;
    animation-delay: calc(var(--i) * 45ms);
}

@keyframes puzzle-pop {

    0%,
    100% {
        transform: scale(1);
    }

    45% {
        transform: scale(1.12);
    }
}

@media (prefers-reduced-motion: reduce) {

    .puzzle-tile,
    .puzzle-tile span {
        transition: none;
    }

    .puzzle-board.solved .puzzle-tile span {
        animation: none;
    }
}