/* ============================================
   2048 Puzzle Game Styles
   ============================================ */

:root {
    --p2048-cell-size: 90px;
    --p2048-gap: 10px;
    --p2048-radius: 6px;
    --p2048-board-bg: #bbada0;
    --p2048-empty-bg: #cdc1b4;
}

/* Background */
.p2048-bg {
    background: #1a1612;
    background-image:
        radial-gradient(ellipse at 30% 20%, rgba(212, 175, 55, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse at 70% 80%, rgba(187, 173, 160, 0.05) 0%, transparent 50%);
}

/* Board container */
.p2048-board {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

/* Grid */
.p2048-grid {
    display: grid;
    grid-template-columns: repeat(4, var(--p2048-cell-size));
    grid-template-rows: repeat(4, var(--p2048-cell-size));
    gap: var(--p2048-gap);
    background: var(--p2048-board-bg);
    padding: var(--p2048-gap);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

/* Cell base */
.p2048-cell {
    width: var(--p2048-cell-size);
    height: var(--p2048-cell-size);
    border-radius: var(--p2048-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.15s ease;
}

.p2048-value {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
    text-align: center;
}

.p2048-value.p2048-small {
    font-size: 1.5rem;
}

/* Empty cell */
.p2048-empty {
    background: var(--p2048-empty-bg);
}

/* Tile colors by value */
.p2048-tile-2 {
    background: #eee4da;
}
.p2048-tile-2 .p2048-value {
    color: #776e65;
}

.p2048-tile-4 {
    background: #ede0c8;
}
.p2048-tile-4 .p2048-value {
    color: #776e65;
}

.p2048-tile-8 {
    background: #f2b179;
}
.p2048-tile-8 .p2048-value {
    color: #f9f6f2;
}

.p2048-tile-16 {
    background: #f59563;
}
.p2048-tile-16 .p2048-value {
    color: #f9f6f2;
}

.p2048-tile-32 {
    background: #f67c5f;
}
.p2048-tile-32 .p2048-value {
    color: #f9f6f2;
}

.p2048-tile-64 {
    background: #f65e3b;
}
.p2048-tile-64 .p2048-value {
    color: #f9f6f2;
}

.p2048-tile-128 {
    background: #edcf72;
    box-shadow: 0 0 8px 2px rgba(237, 207, 114, 0.3);
}
.p2048-tile-128 .p2048-value {
    color: #f9f6f2;
}

.p2048-tile-256 {
    background: #edcc61;
    box-shadow: 0 0 10px 3px rgba(237, 204, 97, 0.35);
}
.p2048-tile-256 .p2048-value {
    color: #f9f6f2;
}

.p2048-tile-512 {
    background: #edc850;
    box-shadow: 0 0 12px 4px rgba(237, 200, 80, 0.4);
}
.p2048-tile-512 .p2048-value {
    color: #f9f6f2;
}

.p2048-tile-1024 {
    background: #edc53f;
    box-shadow: 0 0 14px 5px rgba(237, 197, 63, 0.45);
}
.p2048-tile-1024 .p2048-value {
    color: #f9f6f2;
    font-size: 1.4rem;
}

.p2048-tile-2048 {
    background: #edc22e;
    box-shadow: 0 0 18px 6px rgba(237, 194, 46, 0.5);
}
.p2048-tile-2048 .p2048-value {
    color: #f9f6f2;
    font-size: 1.4rem;
}

.p2048-tile-4096 {
    background: #3c3a32;
    box-shadow: 0 0 18px 6px rgba(60, 58, 50, 0.4);
}
.p2048-tile-4096 .p2048-value {
    color: #f9f6f2;
    font-size: 1.3rem;
}

.p2048-tile-super {
    background: #3c3a32;
    box-shadow: 0 0 20px 8px rgba(212, 175, 55, 0.3);
}
.p2048-tile-super .p2048-value {
    color: #f9f6f2;
    font-size: 1.2rem;
}

/* Direction controls (D-pad) */
.p2048-controls {
    display: flex;
    justify-content: center;
}

.p2048-dpad {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.p2048-dpad-mid {
    display: flex;
    gap: 4px;
}

.p2048-dir-btn {
    width: 56px;
    height: 44px;
    border: 1px solid rgba(212, 175, 55, 0.3);
    background: rgba(212, 175, 55, 0.1);
    color: #d4af37;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
    font-family: inherit;
}

.p2048-dir-btn:hover {
    background: rgba(212, 175, 55, 0.25);
    border-color: #d4af37;
    transform: scale(1.05);
}

.p2048-dir-btn:active {
    background: rgba(212, 175, 55, 0.4);
    transform: scale(0.96);
}

/* Overlays */
.p2048-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.65);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    backdrop-filter: blur(3px);
}

.p2048-overlay-card {
    background: #2a2520;
    border: 1px solid rgba(212, 175, 55, 0.4);
    border-radius: 12px;
    padding: 32px 40px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
    max-width: 360px;
}

.p2048-overlay-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: #d4af37;
    margin-bottom: 12px;
}

.p2048-overlay-stats {
    font-size: 1rem;
    color: #c0b8a8;
    margin-bottom: 20px;
    line-height: 1.6;
}

.p2048-overlay-stats strong {
    color: #d4af37;
}

.p2048-overlay-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 500px) {
    :root {
        --p2048-cell-size: 70px;
        --p2048-gap: 8px;
    }

    .p2048-value {
        font-size: 1.6rem;
    }

    .p2048-value.p2048-small {
        font-size: 1.2rem;
    }

    .p2048-dir-btn {
        width: 48px;
        height: 38px;
        font-size: 1rem;
    }
}

@media (max-width: 380px) {
    :root {
        --p2048-cell-size: 60px;
        --p2048-gap: 6px;
    }

    .p2048-value {
        font-size: 1.3rem;
    }
}