/* ── 时间计算器工具页 ── */

/* 两列表单 */
.sj-form {
    grid-template-columns: 1fr 1fr;
}

/* 时长表单三列 */
.sj-duration-form {
    grid-template-columns: 1fr 1fr 1fr;
    margin-top: -0.5rem;
}

/* 模式切换标签 */
.sj-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 1.5rem;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    overflow: hidden;
}

.sj-tab {
    flex: 1;
    padding: 0.7rem 1rem;
    border: none;
    background: #f5f5f5;
    color: #666;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
}

.sj-tab.active {
    background: #2563eb;
    color: white;
}

.sj-tab:hover:not(.active) {
    background: #e8e8e8;
}

/* 跨天选项 */
.sj-cross-day {
    margin: 0.5rem 0 1rem;
    font-size: 0.88rem;
    color: #666;
}

.sj-cross-day label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    cursor: pointer;
}

.sj-cross-day input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: #2563eb;
}

/* 结果区 */
.sj-result {
    margin-top: 1.5rem;
    background: #f8f9fb;
    border: 1px solid #e8eaf0;
    border-radius: 10px;
    padding: 1.5rem;
}

.sj-result-content {
    text-align: center;
}

.sj-result-main {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.3rem;
    margin-bottom: 1rem;
}

.sj-result-num {
    font-size: 2.2rem;
    font-weight: 700;
    color: #2563eb;
    font-family: 'Fira Code', monospace;
}

.sj-result-unit {
    font-size: 0.95rem;
    color: #666;
}

.sj-result-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.8rem;
    margin-bottom: 1rem;
}

.sj-result-item {
    text-align: center;
    background: white;
    border: 1px solid #e8eaf0;
    border-radius: 8px;
    padding: 0.7rem 0.5rem;
}

.sj-result-item-val {
    font-size: 1.2rem;
    font-weight: 600;
    color: #333;
    font-family: 'Fira Code', monospace;
}

.sj-result-item-label {
    font-size: 0.78rem;
    color: #999;
    margin-top: 0.15rem;
}

.sj-result-note {
    font-size: 0.85rem;
    color: #888;
    line-height: 1.7;
    padding-top: 0.6rem;
    border-top: 1px solid #e8eaf0;
}

/* ── Mobile ── */
@media (max-width: 640px) {
    .sj-form {
        grid-template-columns: 1fr;
    }

    .sj-duration-form {
        grid-template-columns: 1fr 1fr 1fr;
    }

    .sj-result-num {
        font-size: 1.8rem;
    }

    .sj-result-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}