/* 全局样式 */
:root {
    --primary-color: #3498db;
    --secondary-color: #2980b9;
    --accent-color: #16a085;
    --text-color: #333;
    --light-gray: #f5f5f5;
    --card-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    background-color: #f0f2f5;
    color: var(--text-color);
    margin: 0;
    padding: 0;
}

/* 侧边栏样式 */
.sidebar {
    background-color: white;
    min-height: 100vh;
    padding: 20px 0;
    box-shadow: var(--card-shadow);
    position: sticky;
    top: 0;
}

/* 修改logo样式 */
.logo {
    text-align: center;
    padding: 15px 10px 25px;
    border-bottom: 1px solid #eee;
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.logo-img {
    max-width: 80px;
    height: auto;
    margin-bottom: 10px;
}

.logo-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
}

.nav-link {
    color: var(--text-color);
    padding: 12px 20px;
    margin: 5px 0;
    border-radius: 0 30px 30px 0;
    transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
    background-color: rgba(52, 152, 219, 0.1);
    color: var(--primary-color);
}

.nav-link i {
    margin-right: 10px;
    font-size: 1.2rem;
}

.update-info {
    position: absolute;
    bottom: 20px;
    width: 100%;
    text-align: center;
    font-size: 0.8rem;
    color: #777;
    padding: 0 20px;
}

/* 主内容区样式 */
.main-content {
    padding: 20px 30px;
}

.status-bar {
    margin-bottom: 25px;
    align-items: center;
}

.status-bar h2 {
    font-size: 1.8rem;
    font-weight: 600;
    margin: 0;
}

.status-bar i {
    color: var(--primary-color);
    margin-right: 10px;
}

.refresh-button button {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    transition: var(--transition);
}

.refresh-button button:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

/* 卡片样式 */
.card {
    border: none;
    border-radius: 10px;
    box-shadow: var(--card-shadow);
    margin-bottom: 25px;
    transition: var(--transition);
}

.card:hover {
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    transform: translateY(-3px);
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* 数据概览卡片 */
.data-overview {
    margin-bottom: 25px;
}

.overview-card {
    text-align: center;
}

.overview-card .price {
    font-size: 2rem;
    font-weight: 700;
    margin: 10px 0 5px;
}

.overview-card .change, .overview-card .material {
    font-size: 1rem;
    margin-bottom: 5px;
}

.overview-card .update-time {
    font-size: 0.8rem;
    color: #777;
    margin-bottom: 0;
}

/* 涨跌颜色 */
.positive {
    color: #27ae60;
}

.negative {
    color: #e74c3c;
}

/* 部分标题 */
.section {
    margin-bottom: 30px;
}

.section-header {
    margin-bottom: 15px;
}

.section-header h3 {
    font-size: 1.4rem;
    font-weight: 600;
}

.section-header i {
    color: var(--primary-color);
    margin-right: 10px;
}

/* 图表容器 */
.chart-container {
    height: 300px;
    width: 100%;
}

/* 数据表格 */
.data-card .table th {
    background-color: rgba(52, 152, 219, 0.1);
    color: var(--primary-color);
    font-weight: 600;
}

.data-card .table td {
    vertical-align: middle;
}

/* 信息卡片 */
.info-card {
    background-color: rgba(52, 152, 219, 0.05);
}

.info-card .card-title {
    color: var(--primary-color);
}

.info-card ul {
    padding-left: 20px;
}

.info-card li {
    margin-bottom: 8px;
}

/* 响应式调整 */
@media (max-width: 991px) {
    .sidebar {
        min-height: auto;
        position: static;
    }
    
    .update-info {
        position: static;
        margin-top: 20px;
    }
    
    .chart-container {
        height: 250px;
    }
}

@media (max-width: 768px) {
    .main-content {
        padding: 15px;
    }
    
    .status-bar h2 {
        font-size: 1.5rem;
        margin-bottom: 15px;
    }
    
    .overview-card .price {
        font-size: 1.5rem;
    }
}