/* ノノグラムの解き方ページ（how_to_solve.php / how_to_solve_en.php）の図 */

.ng-figure {
    margin: 1rem 0 1.5rem;
    overflow-x: auto;
}

.ng-line {
    display: flex;
    align-items: center;
    margin: 0.3rem 0;
    white-space: nowrap;
}

.ng-label {
    flex: 0 0 4rem;
    font-size: 0.8rem;
    color: #6c757d;
}

.ng-clue {
    flex: 0 0 3.2rem;
    text-align: right;
    padding-right: 0.5rem;
    font-weight: bold;
}

.ng-num + .ng-num {
    margin-left: 0.3rem;
}

.ng-num-R {
    color: #dc3545;
}

.ng-num-B {
    color: #0d6efd;
}

.ng-cells {
    display: inline-flex;
    border-left: 1px solid #495057;
}

.ng-cell {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 1.5rem;
    width: 1.5rem;
    height: 1.5rem;
    box-sizing: border-box;
    border: 1px solid #495057;
    border-left: none;
    font-size: 0.85rem;
    line-height: 1;
    color: #868e96;
}

.ng-cell.ng-sep {
    border-right-width: 2px;
}

/* マスの状態。表の中のマス（.ng-gcell）と共用する */
.ng-fill {
    background-color: #212529;
}

.ng-red {
    background-color: #dc3545;
}

.ng-blue {
    background-color: #0d6efd;
}

.ng-place1 {
    background-color: #9ec5fe;
}

.ng-place2 {
    background-color: #ffda6a;
}

/* その手順で新しく確定したマス */
.ng-new {
    box-shadow: inset 0 0 0 3px #fd7e14;
}

.ng-blank.ng-new {
    background-color: #fff3cd;
}

.ng-figcaption {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: #6c757d;
    white-space: normal;
}

.ng-legend {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 1.25rem;
    margin: 1rem 0;
    font-size: 0.9rem;
}

.ng-legend .ng-cell {
    border-left: 1px solid #495057;
    margin-right: 0.35rem;
    vertical-align: middle;
}

.ng-grid {
    border-collapse: collapse;
}

.ng-grid td {
    padding: 0;
}

.ng-grid .ng-gcell {
    width: 1.6rem;
    min-width: 1.6rem;
    height: 1.6rem;
    border: 1px solid #495057;
    text-align: center;
    vertical-align: middle;
    font-size: 0.85rem;
    color: #868e96;
}

.ng-grid .ng-colclue {
    vertical-align: bottom;
    text-align: center;
    font-weight: bold;
    line-height: 1.15;
    padding-bottom: 0.25rem;
}

.ng-grid .ng-rowclue {
    text-align: right;
    white-space: nowrap;
    font-weight: bold;
    padding-right: 0.5rem;
}

.ng-stages {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 2rem;
    margin: 1rem 0;
}

.ng-stage {
    max-width: 15rem;
}

.ng-toc li {
    margin: 0.15rem 0;
}

.ng-stage-title {
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

.ng-cta {
    margin: 2.5rem 0 1rem;
    padding: 1.5rem;
    border: 1px solid #dee2e6;
    border-radius: 0.5rem;
    background-color: #f8f9fa;
}