/* ===== Killer Sudoku 专属样式 ===== */

/* ===== 游戏区整体布局 ===== */
.killer-game-section {
    padding: 16px 0 20px;
}

.killer-game-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    gap: 36px;
    align-items: flex-start;
    justify-content: center;
}

.killer-board-side {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    align-items: flex-start;
}

.killer-panel-side {
    width: 320px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

/* ===== 难度选择栏 ===== */
.killer-diff-bar {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px 0;
    flex-wrap: wrap;
}

.killer-diff-bar .diff-btn {
    padding: 8px 22px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    background: var(--btn-bg);
    border: 1px solid var(--btn-border);
    color: var(--text);
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}

.killer-diff-bar .diff-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.killer-diff-bar .diff-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

/* ===== 棋盘容器 ===== */
.killer-board-container {
    position: relative;
    width: 100%;
    max-width: 680px;
    background: var(--board-bg);
    border-radius: var(--radius-lg);
    padding: 14px;
    box-shadow: var(--shadow-md);
}

/* ===== 杀手数独棋盘 ===== */
.killer-board {
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    grid-template-rows: repeat(9, 1fr);
    width: 100%;
    aspect-ratio: 1;
    background: #fff;
    border: 3px solid var(--text, #333);
    border-radius: 4px;
    overflow: hidden;
}

.killer-cell {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: calc(28px * var(--font-scale));
    font-weight: 600;
    color: var(--text, #333);
    cursor: pointer;
    background: #fff;
    border-right: 1px solid #e0e0e0;
    border-bottom: 1px solid #e0e0e0;
    transition: background 0.1s;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

/* 宫格粗线 - 最粗，最清晰 */
.killer-cell[data-col="2"],
.killer-cell[data-col="5"] {
    border-right: 3px solid var(--text, #333);
}
.killer-cell[data-row="2"],
.killer-cell[data-row="5"] {
    border-bottom: 3px solid var(--text, #333);
}
.killer-cell[data-col="8"] { border-right: none; }
.killer-cell[data-row="8"] { border-bottom: none; }

/* 交互状态 */
.killer-cell:hover {
    background: rgba(74, 125, 255, 0.05);
}

.killer-cell.selected {
    background: rgba(74, 125, 255, 0.18);
}

.killer-cell.highlight {
    background: rgba(74, 125, 255, 0.06);
}

.killer-cell.error {
    color: var(--error, #e74c3c);
}

.killer-cell.given {
    color: var(--text, #333);
    font-weight: 700;
}

.killer-cell.same-num {
    background: rgba(74, 125, 255, 0.1);
}

/* 笔记 */
.killer-cell .notes {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    padding: 4px;
    font-size: calc(12px * var(--font-scale));
    color: var(--text-sub, #999);
    font-weight: 500;
    pointer-events: none;
    z-index: 2;
}

.killer-cell .notes span {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===== 笼子虚线边框 - 橙色虚线，粗且醒目 ===== */
.killer-cell.cage-top {
    border-top: 2.5px dashed #e67e22;
}
.killer-cell.cage-bottom {
    border-bottom: 2.5px dashed #e67e22 !important;
}
.killer-cell.cage-left {
    border-left: 2.5px dashed #e67e22;
}
.killer-cell.cage-right {
    border-right: 2.5px dashed #e67e22 !important;
}

/* 宫格线处的笼子边：保持宫格线为实线黑色，笼子线只在非宫格位置显示 */
.killer-cell[data-col="2"].cage-right,
.killer-cell[data-col="5"].cage-right {
    border-right: 3px solid var(--text, #333) !important;
    position: relative;
}
.killer-cell[data-row="2"].cage-bottom,
.killer-cell[data-row="5"].cage-bottom {
    border-bottom: 3px solid var(--text, #333) !important;
    position: relative;
}

/* 笼子和值标签 */
.killer-cage-sum {
    position: absolute;
    top: 3px;
    left: 5px;
    font-size: calc(13px * var(--font-scale));
    color: #d35400;
    font-weight: 700;
    pointer-events: none;
    z-index: 4;
    line-height: 1;
    background: rgba(255,255,255,0.95);
    padding: 1px 4px;
    border-radius: 3px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    letter-spacing: -0.3px;
}

/* ===== 右侧面板 ===== */
.killer-status-bar {
    margin-bottom: 0;
}

.killer-func-bar {
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
    margin-bottom: 0;
}

.killer-numpad {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    grid-template-rows: repeat(3, 1fr) !important;
    gap: 10px;
    width: 100%;
    margin-bottom: 0;
}

.killer-numpad .num-btn {
    min-height: 88px;
    font-size: calc(34px * var(--font-scale));
    border-radius: 12px;
    aspect-ratio: 1;
    font-weight: 600;
}

.killer-action-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.killer-action-row .big-newgame-btn {
    width: 100%;
    padding: 16px 20px;
    font-size: calc(17px * var(--font-scale));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

/* ===== 响应式适配 ===== */
/* 超宽屏 */
@media (min-width: 1400px) {
    .killer-game-wrap {
        max-width: 1400px;
        gap: 48px;
    }
    .killer-board-container {
        max-width: 780px;
    }
    .killer-panel-side {
        width: 360px;
    }
    .killer-cell {
        font-size: calc(32px * var(--font-scale));
    }
    .killer-cage-sum {
        font-size: calc(14px * var(--font-scale));
    }
    .killer-cell .notes {
        font-size: calc(13px * var(--font-scale));
    }
    .killer-numpad .num-btn {
        min-height: 96px;
        font-size: calc(38px * var(--font-scale));
    }
}

/* 中等屏 */
@media (max-width: 1100px) {
    .killer-game-wrap {
        gap: 24px;
        padding: 0 16px;
    }
    .killer-board-container {
        max-width: 560px;
        padding: 10px;
    }
    .killer-panel-side {
        width: 280px;
    }
    .killer-cell {
        font-size: calc(24px * var(--font-scale));
    }
    .killer-cage-sum {
        font-size: calc(12px * var(--font-scale));
    }
    .killer-cell .notes {
        font-size: calc(11px * var(--font-scale));
    }
    .killer-numpad .num-btn {
        min-height: 76px;
        font-size: calc(30px * var(--font-scale));
    }
    .killer-diff-bar .diff-btn {
        padding: 6px 18px;
        font-size: 13px;
    }
}

/* 平板 */
@media (max-width: 900px) {
    .killer-game-wrap {
        gap: 16px;
        padding: 0 12px;
    }
    .killer-board-container {
        max-width: 460px;
        padding: 8px;
    }
    .killer-panel-side {
        width: 240px;
        gap: 10px;
    }
    .killer-cell {
        font-size: calc(20px * var(--font-scale));
    }
    .killer-cage-sum {
        font-size: calc(11px * var(--font-scale));
        top: 2px;
        left: 3px;
        padding: 0 3px;
    }
    .killer-cell .notes {
        font-size: calc(10px * var(--font-scale));
        padding: 3px;
    }
    .killer-numpad .num-btn {
        min-height: 62px;
        font-size: calc(26px * var(--font-scale));
    }
    .killer-diff-bar {
        gap: 6px;
    }
    .killer-diff-bar .diff-btn {
        padding: 5px 14px;
        font-size: 12px;
    }
}

/* 手机端：上下布局 */
@media (max-width: 768px) {
    .killer-game-wrap {
        flex-direction: column;
        gap: 12px;
        align-items: center;
        padding: 0 10px;
    }
    .killer-board-side {
        justify-content: center;
        width: 100%;
    }
    .killer-board-container {
        max-width: 100%;
        padding: 8px;
    }
    .killer-panel-side {
        width: 100%;
        max-width: 420px;
    }
    .killer-cell {
        font-size: calc(22px * var(--font-scale));
    }
    .killer-cage-sum {
        font-size: calc(11px * var(--font-scale));
    }
    .killer-cell .notes {
        font-size: calc(10px * var(--font-scale));
    }
    .killer-numpad .num-btn {
        min-height: 70px;
        font-size: calc(30px * var(--font-scale));
    }
    .killer-diff-bar {
        gap: 4px;
        padding: 10px 10px 0;
        overflow-x: auto;
        flex-wrap: nowrap;
        justify-content: flex-start;
        -webkit-overflow-scrolling: touch;
    }
    .killer-diff-bar .diff-btn {
        padding: 5px 14px;
        font-size: 12px;
        flex-shrink: 0;
    }
}

@media (max-width: 480px) {
    .killer-game-wrap {
        padding: 0 6px;
        gap: 8px;
    }
    .killer-cell {
        font-size: calc(18px * var(--font-scale));
    }
    .killer-cage-sum {
        font-size: calc(10px * var(--font-scale));
        top: 2px;
        left: 3px;
        padding: 0 2px;
    }
    .killer-cell .notes {
        font-size: calc(9px * var(--font-scale));
        padding: 2px;
    }
    .killer-numpad .num-btn {
        min-height: 58px;
        font-size: calc(26px * var(--font-scale));
    }
    .killer-action-row .big-newgame-btn {
        padding: 12px 16px;
        font-size: calc(15px * var(--font-scale));
    }
}