/* 全局变量定义 */
:root {
    --up-color: #d32f2f; /* 涨红 */
    --down-color: #2e7d32; /* 跌绿 */
    --primary-bg: #ffffff;
    --secondary-bg: #f5f7fa;
    --text-main: #212121;
    --text-light: #757575;
    --border-color: #e0e0e0;
    --accent-blue: #1976d2;
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--secondary-bg);
    color: var(--text-main);
    line-height: 1.5;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 工具类 */
.up { color: var(--up-color); }
.down { color: var(--down-color); }

/* 顶部行情条 */
.ticker-wrap {
    background-color: #000;
    color: #fff;
    padding: 8px 0;
    font-size: 0.85rem;
    overflow: hidden;
    white-space: nowrap;
}

.ticker-content {
    display: flex;
    justify-content: space-between;
}

.ticker-item {
    display: inline-flex;
    gap: 8px;
    align-items: center;
}

.ticker-item .name {
    color: #bbb;
}

.ticker-item .value {
    font-weight: bold;
}

/* 主导航 */
.main-header {
    background-color: var(--primary-bg);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--accent-blue);
    display: inline-block;
}

.sub-logo {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-left: 5px;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-menu a {
    font-weight: 500;
    color: var(--text-main);
    padding: 18px 0;
    border-bottom: 2px solid transparent;
}

.nav-menu a:hover, .nav-menu a.active {
    color: var(--accent-blue);
    border-bottom-color: var(--accent-blue);
}

.header-actions {
    display: flex;
    gap: 15px;
}

.btn-login {
    padding: 6px 15px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.9rem;
}

.btn-register {
    padding: 6px 15px;
    background-color: var(--accent-blue);
    color: #fff;
    border-radius: 4px;
    font-size: 0.9rem;
}

/* 主体布局 */
.main-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    margin-top: 20px;
    margin-bottom: 40px;
}

/* 左侧内容 */
.headline-news {
    background: var(--primary-bg);
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.news-image {
    position: relative;
    height: 300px;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    padding: 20px;
    color: #fff;
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    background-color: var(--up-color);
    color: #fff;
    font-size: 0.75rem;
    border-radius: 2px;
    margin-bottom: 8px;
}

.headline-news h2 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.headline-news p {
    font-size: 0.95rem;
    opacity: 0.9;
}

/* 通用区块标题 */
.section-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.section-title h3 {
    font-size: 1.1rem;
    color: var(--text-main);
    border-left: 3px solid var(--accent-blue);
    padding-left: 10px;
}

.more-link {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* 股票表格 */
.stock-table-wrapper {
    background: var(--primary-bg);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.stock-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.stock-table th {
    text-align: left;
    padding: 12px 10px;
    color: var(--text-light);
    font-weight: normal;
    border-bottom: 1px solid var(--border-color);
}

.stock-table td {
    padding: 15px 10px;
    border-bottom: 1px solid #f0f0f0;
}

.stock-name {
    font-weight: bold;
    color: var(--text-main);
}

.stock-code {
    font-size: 0.8rem;
    color: var(--text-light);
}

.price {
    font-weight: bold;
    font-family: 'Courier New', monospace;
}

.btn-trade {
    padding: 4px 12px;
    background-color: #fff;
    border: 1px solid var(--accent-blue);
    color: var(--accent-blue);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.2s;
}

.btn-trade:hover {
    background-color: var(--accent-blue);
    color: #fff;
}

/* 新闻列表 */
.news-list-section {
    background: var(--primary-bg);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.news-list li {
    padding: 12px 0;
    border-bottom: 1px dashed #eee;
    display: flex;
    align-items: center;
    gap: 15px;
}

.news-list li:last-child {
    border-bottom: none;
}

.news-list .time {
    color: var(--text-light);
    font-size: 0.85rem;
    min-width: 40px;
}

.news-list a {
    flex: 1;
    font-size: 0.95rem;
    color: var(--text-main);
}

.news-list a:hover {
    color: var(--accent-blue);
}

.tag {
    font-size: 0.75rem;
    padding: 2px 6px;
    border-radius: 2px;
    background-color: #f0f0f0;
    color: var(--text-light);
}

/* 右侧侧边栏 */
.widget {
    background: var(--primary-bg);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.widget-title {
    font-size: 1.1rem;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

/* 用户卡片 */
.user-placeholder {
    text-align: center;
    padding: 20px 0;
}

.avatar-icon {
    font-size: 3rem;
    color: #ddd;
    margin-bottom: 10px;
}

.btn-full {
    width: 100%;
    padding: 10px;
    background-color: var(--accent-blue);
    color: #fff;
    border: none;
    border-radius: 4px;
    margin-top: 15px;
    cursor: pointer;
}

/* 板块列表 */
.sector-list li {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid #f5f5f5;
    font-size: 0.9rem;
}

.sector-change {
    font-weight: bold;
}

/* 广告位 */
.ad-widget {
    padding: 0;
    overflow: hidden;
}

.ad-widget img {
    width: 100%;
    display: block;
}

.ad-text {
    padding: 15px;
    background: #fff;
}

.ad-text h4 {
    font-size: 1rem;
    margin-bottom: 5px;
}

.ad-text p {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* 页脚 */
.site-footer {
    background-color: #263238;
    color: #b0bec5;
    padding: 40px 0 20px;
    font-size: 0.9rem;
}

.footer-content {
    text-align: center;
}

.footer-links {
    margin-bottom: 20px;
}

.footer-links a {
    margin: 0 15px;
    color: #eceff1;
}

.footer-links a:hover {
    color: #fff;
}

.copyright p {
    margin-bottom: 5px;
    font-size: 0.8rem;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .main-layout {
        grid-template-columns: 1fr;
    }
    
    .header-inner {
        flex-direction: column;
        height: auto;
        padding: 10px 0;
        gap: 10px;
    }
    
    .nav-menu {
        gap: 15px;
        font-size: 0.9rem;
    }
    
    .ticker-content {
        font-size: 0.75rem;
    }
    
    .stock-table {
        font-size: 0.8rem;
    }
    
    .stock-table th:nth-child(4), 
    .stock-table td:nth-child(4),
    .stock-table th:nth-child(5), 
    .stock-table td:nth-child(5) {
        display: none;
    }
}