/**
 * sudoku.css — Styles dédiés au jeu Sudoku
 * Styles propres au jeu uniquement — communs dans games.css
 */

/* ── Plateau ─────────────────────────────────────────────────────────────────── */
.sudoku-board {
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    grid-template-rows: repeat(9, 1fr);
    gap: 0;
    width: 100%;
    max-width: 480px;
    aspect-ratio: 1 / 1;
    margin: 0 auto;
    background: var(--bs-border-color, #495057);
    border: 3px solid var(--bs-emphasis-color, #212529);
    border-radius: 6px;
    overflow: hidden;
    user-select: none;
    touch-action: manipulation;
}

/* ── Cellule ─────────────────────────────────────────────────────────────────── */
.sudoku-cell {
    position: relative;
    background: var(--bs-body-bg, #fff);
    color: var(--bs-body-color, #212529);
    border: 1px solid rgba(108, 117, 125, .35);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: clamp(.95rem, 4vw, 1.6rem);
    line-height: 1;
    cursor: pointer;
    transition: background-color .12s ease, color .12s ease;
}

.sudoku-cell:focus {
    outline: 2px solid #0d6efd;
    outline-offset: -2px;
    z-index: 2;
}

/* Bordures épaisses pour les sous-grilles 3×3 */
.sudoku-cell[data-col="2"],
.sudoku-cell[data-col="5"] {
    border-right: 2px solid var(--bs-emphasis-color, #212529);
}
.sudoku-cell[data-row="2"],
.sudoku-cell[data-row="5"] {
    border-bottom: 2px solid var(--bs-emphasis-color, #212529);
}

/* États */
.sudoku-cell.is-given {
    color: #0b5ed7;
    background: rgba(13, 110, 253, .07);
    cursor: default;
    font-weight: 800;
}

[data-theme="dark"] .sudoku-cell.is-given {
    color: #6ea8fe;
    background: rgba(110, 168, 254, .12);
}

.sudoku-cell.is-selected {
    background: rgba(13, 110, 253, .22) !important;
}

.sudoku-cell.is-peer {
    background: rgba(13, 110, 253, .08);
}

.sudoku-cell.is-same-value {
    background: rgba(255, 193, 7, .25);
}

.sudoku-cell.is-error {
    color: #dc3545 !important;
    background: rgba(220, 53, 69, .15) !important;
}

.sudoku-cell.is-hint {
    animation: sudoku-hint-pulse .8s ease 2;
}

@keyframes sudoku-hint-pulse {
    0%, 100% { box-shadow: inset 0 0 0 0 rgba(25, 135, 84, .55); }
    50%      { box-shadow: inset 0 0 0 4px rgba(25, 135, 84, .55); }
}

/* ── Notes (crayon) ──────────────────────────────────────────────────────────── */
.sudoku-notes {
    position: absolute;
    inset: 4%;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    font-size: clamp(.42rem, 1.4vw, .62rem);
    font-weight: 600;
    color: var(--bs-secondary-color, #6c757d);
    line-height: 1;
    pointer-events: none;
}
.sudoku-notes span {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: .85;
}
.sudoku-notes span:empty { visibility: hidden; }

/* ── Pavé numérique ──────────────────────────────────────────────────────────── */
.sudoku-pad {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    gap: 6px;
    max-width: 480px;
    margin: 0 auto;
}

.sudoku-pad-btn {
    appearance: none;
    -webkit-appearance: none;
    border: 1px solid rgba(108, 117, 125, .35);
    background: var(--bs-body-bg, #fff);
    color: var(--bs-body-color, #212529);
    font-size: clamp(.95rem, 3vw, 1.2rem);
    font-weight: 700;
    border-radius: 6px;
    padding: .5rem 0;
    cursor: pointer;
    transition: background-color .12s ease, transform .08s ease;
}
.sudoku-pad-btn:hover {
    background: rgba(13, 110, 253, .12);
}
.sudoku-pad-btn:active {
    transform: scale(.95);
}
.sudoku-pad-erase {
    color: #dc3545;
    font-weight: 800;
}

/* ── Mode notes actif (sur le bouton crayon) ─────────────────────────────────── */
.sudoku-pencil-on {
    background: #198754 !important;
    color: #fff !important;
    border-color: #198754 !important;
}

/* ── Responsive ──────────────────────────────────────────────────────────────── */
@media (max-width: 420px) {
    .sudoku-pad {
        grid-template-columns: repeat(5, 1fr);
    }
}