/* sudoku demo */

.sd-layout {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: flex-start;
    gap: 1.5rem;
    margin-top: 1rem;
}

.sd-board {
    display: grid;
    grid-template-columns: repeat(9, 44px);
    grid-template-rows: repeat(9, 44px);
    border: 2px solid #8b949e;
    user-select: none;
    -webkit-user-select: none;
}

.sd-board button {
    all: unset;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #30363d;
    color: #f0883e;
    font-size: 1.3rem;
    font-family: 'Cascadia Code', 'Fira Code', monospace;
    cursor: pointer;
}

.sd-board button.given { color: #e6edf3; font-weight: 700; }
.sd-board button.trying { color: #58a6ff; }
.sd-board button.selected { background: rgba(240, 136, 62, 0.22); }
.sd-board button.box-r { border-right: 2px solid #8b949e; }
.sd-board button.box-b { border-bottom: 2px solid #8b949e; }

.sd-pad {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 4px;
    width: 400px;
    max-width: 100%;
    margin-top: 0.6rem;
}

.sd-side {
    width: 360px;
    max-width: 100%;
    text-align: left;
}

.sd-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: flex-start;
}

.sd-table {
    width: 100%;
    margin-top: 0.8rem;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.sd-table th, .sd-table td {
    padding: 0.35rem 0.5rem;
    border-bottom: 1px solid #30363d;
    text-align: left;
}

.sd-table td:nth-child(3), .sd-table td:nth-child(4) {
    font-family: 'Cascadia Code', 'Fira Code', monospace;
    text-align: right;
}

@media (max-width: 480px) {
    .sd-board { grid-template-columns: repeat(9, 1fr); grid-template-rows: none; width: 100%; }
    .sd-board button { aspect-ratio: 1; font-size: 1.1rem; }
}