/* 设置面板 */
:root {
    --accent: #4ecdc4;
    --panel-bg: rgb(28, 27, 40);
    --row-bg: rgba(30, 30, 60, 0.8);
    --field-bg: rgba(15, 15, 30, 0.9);
    --text: rgba(255, 255, 255, 0.9);
}

#settings {
    display: none;
    height: 100%;
    background-color: var(--panel-bg);
    flex-direction: column;
    overflow-y: scroll;
    scrollbar-width: none;
    border-bottom: 5px solid #4ecdc4;
}

/* 返回按钮 */
.settings_back {
    background-color: rgba(78, 205, 196, 0.7);
    height: 40px;
}
.settings_title {
    display: flex;
    align-items: center;
    height: 5%;
    color: var(--accent);
    background-color: var(--row-bg);
    font-size: 1.5em;
    border-bottom: 2px solid var(--accent);
}
/* 设置项 */
.settings_row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--row-bg);
    color: var(--text);
    min-height: 5%;
    user-select: none;
}
.settings_row > span {
    flex: 0 0 auto;
    white-space: nowrap;
    color: var(--accent);
}

/* 滑块 */
/* 滑动条底部长条轨道 */
.settings_row input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    width: 100%;
    border-radius: 3px;
    background: var(--field-bg);
    outline: none;
    cursor: pointer;
}
/* 拖动小圆点 */
.settings_row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent);
    border: 2px solid var(--panel-bg);
    box-shadow: 0 0 4px rgba(78, 205, 196, 0.6);
    cursor: pointer;
}
/* （火狐浏览器）专属拖动圆点 */
.settings_row input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent);
    border: 2px solid var(--panel-bg);
    cursor: pointer;
}
/* 滑块右侧显示数值的文字区域 */
.settings_val {
    text-align: left;
    font-size: 0.85rem;
    width: 15%;
    color: rgba(255, 255, 255, 0.85);
    font-variant-numeric: tabular-nums;
}

/* 颜色选择器 */
.settings_row input[type="color"] {
    width: 44px;
    height: 30px;
    padding: 0;
    border: 1px solid rgba(78, 205, 196, 0.4);
    border-radius: 6px;
    background: transparent;
    cursor: pointer;
}

.settings_row input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 2px;
}

.settings_row input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 4px;
}
/* 勾选框行：标签居左，勾选框居右 */
.settings_check {
    cursor: pointer;
}
.settings_check input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
    cursor: pointer;
}
/* 进入设置模式：隐藏其他兄弟元素，仅显示设置面板 */
#battle_control.settings_mode {
    grid-template-rows: 1fr;
    grid-template-columns: 1fr;
}
#battle_control.settings_mode > #basic_control,
#battle_control.settings_mode > #units_list {
    display: none;
}
#battle_control.settings_mode > #settings {
    display: block;
}