/* ============================================
   货币转换工具专用样式
   ⚠️ 不包含 info-card 样式，完全依赖 tools-common.css
   ============================================ */

/* 汇率转换器 */
.converter-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
}

.converter-row {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 16px;
    align-items: end;
}

.currency-input {
    display: flex;
    flex-direction: column;
}

.input-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.swap-button {
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-swap {
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-swap:hover {
    background: var(--primary-dark);
    transform: rotate(180deg);
}

.rate-info {
    margin-top: 16px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: 8px;
    text-align: center;
}

.rate-display {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.rate-text {
    font-weight: bold;
    color: var(--primary-color);
}

.rate-time {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* 快速转换 */
.quick-convert {
    margin-bottom: 24px;
}

.section-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.quick-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.quick-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.quick-btn:hover {
    background: var(--primary-color);
    color: white;
}

/* 汇率图表 */
.chart-section {
    margin-bottom: 24px;
}

.chart-controls {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 16px;
}

.chart-select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--card-bg);
    color: var(--text-primary);
    font-size: 14px;
}

.btn-refresh {
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    width: 36px;
    height: 36px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-refresh:hover {
    background: var(--primary-dark);
}

.chart-container {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    height: 300px;
    position: relative;
}

/* 主要汇率表 */
.rates-table {
    margin-bottom: 24px;
}

.table-container {
    overflow-x: auto;
}

.rates-grid {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
}

.rates-grid th,
.rates-grid td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.rates-grid th {
    background: var(--bg-secondary);
    font-weight: bold;
}

.currency-name {
    font-weight: bold;
}

.rate-up {
    color: var(--success-color);
}

.rate-down {
    color: var(--error-color);
}

/* 汇率说明 */
.info-section {
    margin-bottom: 24px;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.info-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
}

.info-item h4 {
    margin-bottom: 8px;
    color: var(--primary-color);
    font-size: 1rem;
}

.info-item p {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.9rem;
}

/* 使用说明 */
.usage-section {
    margin-bottom: 30px;
}

.usage-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
}

.usage-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
}

.usage-item h4 {
    margin-bottom: 12px;
    color: var(--primary-color);
}

.usage-item ul {
    margin: 0;
    padding-left: 20px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 工具描述样式（如果需要保留） */
.tool-description {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.description-primary {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.description-detailed {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ============================================
   响应式设计
   ============================================ */

@media (max-width: 768px) {
    .converter-row {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .input-group {
        grid-template-columns: 1fr;
    }

    .quick-buttons {
        justify-content: center;
    }

    .chart-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .chart-container {
        height: 250px;
    }

    .usage-content {
        grid-template-columns: 1fr;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }
}