/* 分类标签栏 */
.uc-category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 28px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--ut-color-border);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.uc-tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--ut-color-border);
    border-radius: var(--ut-radius-pill, 50px);
    background: var(--ut-color-surface-muted);
    color: var(--ut-color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--ut-transition-fast);
    white-space: nowrap;
}

.uc-tab-btn:hover {
    border-color: var(--ut-color-primary-500);
    color: var(--ut-color-primary-500);
    background: var(--ut-color-surface);
}

.uc-tab-btn.active {
    background: var(--ut-color-primary-500);
    border-color: var(--ut-color-primary-500);
    color: #fff;
}

/* 换算操作区 */
.uc-converter {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 20px;
    align-items: end;
    margin-bottom: 24px;
}

@media (max-width: 768px) {
    .uc-converter {
        grid-template-columns: 1fr;
        gap: 12px;
    }
}

.uc-input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.uc-value-input {
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 1.15rem;
    letter-spacing: 0.5px;
}

.uc-unit-select {
    font-size: 0.9rem;
}

/* 交换按钮 */
.uc-swap-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 20px;
}

.uc-swap-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 2px solid var(--ut-color-border);
    background: var(--ut-color-surface);
    color: var(--ut-color-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all var(--ut-transition-fast);
}

.uc-swap-btn:hover {
    border-color: var(--ut-color-primary-500);
    color: var(--ut-color-primary-500);
    background: var(--ut-color-surface-muted);
    transform: rotate(180deg);
}

@media (max-width: 768px) {
    .uc-swap-container {
        padding-top: 0;
    }

    .uc-swap-btn {
        transform: rotate(90deg);
    }

    .uc-swap-btn:hover {
        transform: rotate(270deg);
    }
}

/* 操作按钮 */
.uc-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 24px;
}

/* 全量对照表 */
.uc-reference-section {
    border-top: 1px solid var(--ut-color-border);
    padding-top: 20px;
}

.uc-reference-title {
    font-weight: 600;
    color: var(--ut-color-text-secondary);
    margin-bottom: 16px;
    font-size: 0.95rem;
}

.uc-reference-table {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

@media (max-width: 576px) {
    .uc-reference-table {
        grid-template-columns: 1fr;
    }
}

.uc-ref-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    border-radius: var(--ut-radius-sm);
    transition: background var(--ut-transition-fast);
}

.uc-ref-item:nth-child(odd) {
    background: var(--ut-color-surface-muted);
}

.uc-ref-item:hover {
    background: var(--ut-color-surface-muted);
}

.uc-ref-name {
    font-size: 0.875rem;
    color: var(--ut-color-text-secondary);
    font-weight: 500;
}

.uc-ref-value {
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--ut-color-primary-500);
}