/* =============================================================================
   PUZZLE (photo jigsaw) — game-specific styles (board, tray, picker, ghost).
   Shared section chrome lives in games.css; site tokens come from style.css.
   Grid geometry, aspect ratios and piece background math are set by puzzle.js.
   ============================================================================= */

/* ---------------- Layout: board + tray ---------------- */

.puzzle-main {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
    margin-bottom: 1rem;
}

.puzzle-board-wrap {
    position: relative;
    flex: 1 1 auto;
    max-width: 700px;
    min-width: 0;
}

.puzzle-tray-wrap {
    flex: 0 0 240px;
    min-width: 0;
}

.puzzle-tray-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.puzzle-tray-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-gray-600);
}

.puzzle-tray {
    display: flex;
    flex-wrap: wrap;
    align-content: flex-start;
    gap: 0.4rem;
    min-height: 90px;
    padding: 0.5rem;
    background: var(--color-gray-100);
    border: 1px dashed var(--color-gray-300);
    border-radius: var(--border-radius);
}

.puzzle-tray-empty {
    font-size: 0.85rem;
    color: var(--color-gray-500);
    padding: 0.25rem;
}

/* ---------------- Board & slots ---------------- */

.puzzle-board {
    display: grid;
    gap: 2px;
    width: 100%;
    background: var(--color-gray-300);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    user-select: none;
    -webkit-user-select: none;
}

.puzzle-slot {
    appearance: none;
    -webkit-appearance: none;
    display: block;
    padding: 0;
    margin: 0;
    border: none;
    min-width: 0;
    min-height: 0;
    background-color: var(--color-gray-100);
    background-repeat: no-repeat;
    font-family: var(--font-family);
    cursor: pointer;
    touch-action: none;
    -webkit-tap-highlight-color: transparent;
    transition: var(--transition-fast);
}

.puzzle-slot.is-empty {
    background-image: none;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.08);
}

.puzzle-slot.is-empty:hover,
.puzzle-slot.is-empty:focus-visible {
    background-color: var(--color-gray-200);
}

/* Subtle success tint on correctly placed pieces. */
.puzzle-slot.is-correct {
    box-shadow: inset 0 0 0 2px var(--color-success);
}

.puzzle-slot.is-locked {
    cursor: default;
}

.puzzle-slot.is-selected {
    box-shadow: inset 0 0 0 3px var(--color-primary);
    z-index: 1;
}

.puzzle-slot:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: -2px;
    z-index: 1;
}

/* Completed puzzle: fuse the tiles into a clean photo. */
.puzzle-board.is-complete {
    gap: 0;
}

.puzzle-board.is-complete .puzzle-slot {
    cursor: default;
    box-shadow: none;
}

/* ---------------- Preview overlay (hold "Podgląd") ---------------- */

.puzzle-preview {
    position: absolute;
    inset: 0;
    display: none;
    background-repeat: no-repeat;
    background-size: 100% 100%;
    opacity: 0.65;
    border-radius: var(--border-radius-sm);
    pointer-events: none;
    z-index: 2;
}

.puzzle-preview.is-show {
    display: block;
}

/* ---------------- Tray pieces ---------------- */

.puzzle-tray-piece {
    appearance: none;
    -webkit-appearance: none;
    width: 72px;
    min-width: 44px;
    min-height: 44px;
    padding: 0;
    margin: 0;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--border-radius-sm);
    background-color: var(--color-white);
    background-repeat: no-repeat;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    touch-action: none;
    -webkit-tap-highlight-color: transparent;
    transition: var(--transition-fast);
}

.puzzle-tray-piece:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-gray-400);
}

.puzzle-tray-piece.is-selected {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-primary);
}

.puzzle-tray-piece:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ---------------- Drag ghost & drag source ---------------- */

.puzzle-ghost {
    position: fixed;
    left: 0;
    top: 0;
    background-repeat: no-repeat;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-md);
    opacity: 0.9;
    pointer-events: none;
    z-index: 900;
}

.is-drag-src {
    opacity: 0.35;
}

/* ---------------- Lock toggle (toolbar) ---------------- */

.puzzle-lock-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.9rem;
    color: var(--color-gray-600);
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
}

.puzzle-lock-toggle input {
    accent-color: var(--color-primary);
    width: 1rem;
    height: 1rem;
    cursor: pointer;
}

/* ---------------- Image picker ---------------- */

.puzzle-picker {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 0.6rem;
    margin-bottom: 1.25rem;
    padding: 0.75rem;
    background: var(--color-gray-100);
    border-radius: var(--border-radius);
}

.puzzle-picker-item {
    appearance: none;
    -webkit-appearance: none;
    display: flex;
    flex-direction: column;
    padding: 0;
    margin: 0;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--border-radius-sm);
    background: var(--color-white);
    overflow: hidden;
    font-family: var(--font-family);
    cursor: pointer;
    transition: var(--transition-fast);
}

.puzzle-picker-item:hover,
.puzzle-picker-item:focus-visible {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.puzzle-picker-thumb {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 3;
    background-size: cover;
    background-position: center;
}

.puzzle-picker-name {
    padding: 0.35rem 0.4rem;
    font-size: 0.78rem;
    line-height: 1.25;
    color: var(--color-gray-600);
    text-align: center;
}

/* ---------------- Misc: retry, win modal image, bests table ---------------- */

.puzzle-retry-btn {
    margin-left: 0.75rem;
}

.puzzle-modal-img {
    display: block;
    max-width: 100%;
    max-height: 180px;
    margin: 0 auto 0.75rem;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-sm);
}

.puzzle-bests-title {
    margin-top: 1rem;
    font-weight: 700;
    color: var(--color-gray-900);
    font-size: 0.95rem;
}

.puzzle-bests {
    width: 100%;
    margin-top: 0.5rem;
    border-collapse: collapse;
    font-size: 0.9rem;
    color: var(--color-gray-600);
}

.puzzle-bests td {
    padding: 0.35rem 0.5rem;
    border-bottom: 1px solid var(--color-gray-200);
    text-align: center;
}

.puzzle-bests td:first-child {
    text-align: left;
}

.puzzle-bests tbody tr:last-child td {
    border-bottom: none;
}

/* ---------------- Screen-reader-only live region ---------------- */

.puzzle-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

/* ---------------- Motion & responsive ---------------- */

@media (prefers-reduced-motion: reduce) {
    .puzzle-slot,
    .puzzle-tray-piece,
    .puzzle-picker-item {
        transition: none;
    }
}

@media (max-width: 600px) {
    /* Stack: board on top, tray below; everything fits a 600px viewport. */
    .puzzle-main {
        flex-direction: column;
        gap: 0.75rem;
    }

    .puzzle-board-wrap {
        width: 100%;
        max-width: 100%;
    }

    .puzzle-tray-wrap {
        flex: 1 1 auto;
        width: 100%;
    }

    .puzzle-tray-piece {
        width: 64px;
    }

    .puzzle-picker {
        grid-template-columns: repeat(auto-fill, minmax(104px, 1fr));
        gap: 0.4rem;
    }
}