/* ======= BMI 计算器样式 ======= */

.tool-title-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--primary-light);
}

.tool-title-wrapper i {
    font-size: 2rem;
    color: var(--primary-color);
}

.tool-title-wrapper .tool-title {
    margin-bottom: 0;
    border-bottom: none;
}

/* 输入区 */
.bmi-input-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.bmi-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.bmi-label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.bmi-field input.form-input {
    font-size: 20px;
    font-weight: 600;
    padding: 12px 14px;
    font-family: 'Consolas', 'Monaco', monospace;
    text-align: center;
}

.bmi-hint {
    margin-top: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    text-align: center;
}

/* 错误提示 */
.error-tip {
    min-height: 20px;
    margin: 4px 0 2px;
    color: #e74c3c;
    font-size: 14px;
    text-align: center;
    font-weight: 500;
}

/* 结果区 */
.bmi-result {
    margin-top: 10px;
    text-align: center;
}

.bmi-value-card {
    padding: 20px 16px;
    background: linear-gradient(135deg, #eaf4ff 0%, #ffffff 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.bmi-value-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.bmi-value {
    font-size: 60px;
    font-weight: 700;
    color: var(--primary-color);
    font-family: 'Consolas', 'Monaco', monospace;
    line-height: 1.15;
}

.bmi-category {
    display: inline-block;
    margin-top: 8px;
    padding: 6px 20px;
    border-radius: 999px;
    font-size: 16px;
    font-weight: 700;
    color: #fff;
}

.bmi-category .bmi-cat-tip {
    font-weight: 400;
    font-size: 12px;
    margin-left: 8px;
    opacity: 0.92;
}

.bmi-category.cat-under {
    background: #7f8c8d;
}

.bmi-category.cat-normal {
    background: #52c41a;
}

.bmi-category.cat-over {
    background: #fa8c16;
}

.bmi-category.cat-obese {
    background: #e74c3c;
}

/* 色带刻度尺 */
.bmi-scale-wrap {
    margin: 20px 4px 0;
}

.bmi-scale {
    position: relative;
    height: 16px;
    border-radius: 999px;
    /* 分段按中国标准位置：15/18.5/24/28/40 -> 0%/14%/36%/52%/100% */
    background: linear-gradient(90deg,
            #aeb6bf 0%,
            #aeb6bf 14%,
            #52c41a 14%,
            #52c41a 36%,
            #fa8c16 36%,
            #fa8c16 52%,
            #e74c3c 52%,
            #e74c3c 100%);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.12);
}

/* WHO 标准切点：18.5/25/30 -> 14%/40%/60% */
.bmi-scale[data-std="who"] {
    background: linear-gradient(90deg,
            #aeb6bf 0%,
            #aeb6bf 14%,
            #52c41a 14%,
            #52c41a 40%,
            #fa8c16 40%,
            #fa8c16 60%,
            #e74c3c 60%,
            #e74c3c 100%);
}

.bmi-marker {
    position: absolute;
    top: -5px;
    left: 0;
    width: 4px;
    height: 26px;
    background: #2c3e50;
    border: 2px solid #fff;
    border-radius: 4px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.35);
    transform: translateX(-50%);
    transition: left 0.25s ease;
    pointer-events: none;
}

.bmi-scale-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 6px;
    font-size: 12px;
    color: var(--text-secondary);
    font-family: 'Consolas', 'Monaco', monospace;
}

.bmi-scale-labels span:nth-child(2) {
    transform: translateX(-8%);
}

.bmi-scale-labels span:nth-child(3) {
    transform: translateX(-12%);
}

.bmi-scale-labels span:nth-child(4) {
    transform: translateX(-12%);
}

.bmi-scale-labels span:last-child {
    transform: none;
}

/* 健康体重范围 */
.bmi-range-box {
    margin-top: 16px;
    padding: 12px 16px;
    background: rgba(82, 196, 26, 0.1);
    border: 1px solid rgba(82, 196, 26, 0.25);
    border-radius: var(--radius-md);
    font-size: 14px;
    color: #237804;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.bmi-range-box i {
    font-size: 16px;
}

.bmi-range-box .bmi-range-value {
    font-weight: 700;
    font-family: 'Consolas', 'Monaco', monospace;
    color: #237804;
}

/* 免责声明 */
.bmi-disclaimer {
    margin-top: 12px;
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
}

/* 暗色模式 */
[data-theme="dark"] .bmi-value-card {
    background: linear-gradient(135deg, rgba(63, 81, 245, 0.12) 0%, transparent 100%);
    border-color: var(--border-color);
}

[data-theme="dark"] .bmi-range-box {
    background: rgba(82, 196, 26, 0.12);
    border-color: rgba(82, 196, 26, 0.35);
}

[data-theme="dark"] .bmi-range-box,
[data-theme="dark"] .bmi-range-box .bmi-range-value {
    color: #95de64;
}

/* 响应式 */
@media (max-width: 560px) {
    .bmi-input-grid {
        grid-template-columns: 1fr;
    }

    .bmi-value {
        font-size: 46px;
    }
}