/* 全局样式 */
:root {
    --primary-color: #00d4ff;
    --secondary-color: #6c63ff;
    --accent-color: #ff4081;
    --dark-bg: #0a0e17;
    --darker-bg: #050811;
    --card-bg: rgba(16, 20, 31, 0.8);
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --text-muted: #718096;
    --border-color: rgba(0, 212, 255, 0.2);
    --success-color: #00ff88;
    --warning-color: #ffaa00;
    --danger-color: #ff4757;
    --glow-primary: 0 0 20px rgba(0, 212, 255, 0.5);
    --glow-secondary: 0 0 20px rgba(108, 99, 255, 0.5);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Exo 2', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* 背景特效 */
.bg-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.particles {
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(108, 99, 255, 0.1) 0%, transparent 50%);
}

.grid-lines {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
}

.glow-effects {
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 0%, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
}

/* 容器 */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
    z-index: 1;
}

/* 头部样式 */
.header {
    text-align: center;
    margin-bottom: 40px;
    padding: 20px;
    position: relative;
}

.header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

/* 顶部功能区 - 右上角 */
.top-bar {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(10, 14, 23, 0.85);
    padding: 8px 16px;
    border-radius: 50px;
    border: 1px solid rgba(0, 212, 255, 0.2);
    backdrop-filter: blur(10px);
    z-index: 100;
}

.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
    margin-bottom: 15px;
}

.logo-icon {
    font-size: 3rem;
    color: var(--primary-color);
    text-shadow: var(--glow-primary);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.title {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.8rem;
    font-weight: 900;
    letter-spacing: 2px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title .highlight {
    color: var(--text-primary);
    -webkit-text-fill-color: var(--text-primary);
}

.subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-top: 10px;
}

/* 统计概览 */
.stats-overview {
    margin-bottom: 40px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--glow-primary);
}

.stat-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
}

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 2.2rem;
    font-weight: 700;
    font-family: 'Orbitron', sans-serif;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* 主要内容区域 */
.main-content {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.ranking-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.ranking-header h2 {
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.ranking-header h2 i {
    color: var(--accent-color);
}

.filters {
    display: flex;
    gap: 20px;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.filter-group label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.filter-group select {
    background: var(--darker-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px 15px;
    font-family: 'Exo 2', sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: var(--glow-primary);
}

/* 排行榜表格 */
.ranking-table-container {
    overflow-x: auto;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.ranking-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
}

.ranking-table th {
    background: var(--darker-bg);
    color: var(--text-primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    padding: 20px;
    text-align: left;
    border-bottom: 2px solid var(--primary-color);
}

.ranking-table td {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.ranking-table tbody tr {
    transition: all 0.3s ease;
    cursor: pointer;
}

.ranking-table tbody tr:hover {
    background: rgba(0, 212, 255, 0.1);
    transform: scale(1.01);
}

.ranking-table tbody tr.top-3 {
    background: linear-gradient(90deg, rgba(0, 212, 255, 0.1), transparent);
}

.rank-col {
    width: 80px;
    font-weight: 700;
    font-family: 'Orbitron', sans-serif;
    color: var(--primary-color);
}

.user-col {
    width: 250px;
}

.power-col {
    width: 150px;
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    color: var(--success-color);
}

.params-col {
    width: 300px;
}

.trend-col {
    width: 100px;
}

/* 排名徽章 */
.rank-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-weight: 700;
    font-size: 1.1rem;
}

.rank-1 {
    background: linear-gradient(135deg, #ffd700, #ffaa00);
    color: #000;
}

.rank-2 {
    background: linear-gradient(135deg, #c0c0c0, #a0a0a0);
    color: #000;
}

.rank-3 {
    background: linear-gradient(135deg, #cd7f32, #a0522d);
    color: #000;
}

/* 参数进度条 */
.param-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.param-label {
    min-width: 100px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.param-value {
    min-width: 40px;
    text-align: right;
    font-weight: 600;
}

.param-progress {
    flex: 1;
    height: 8px;
    background: var(--darker-bg);
    border-radius: 4px;
    overflow: hidden;
}

.param-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 4px;
    transition: width 0.5s ease;
}

/* 加载状态 */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px;
    text-align: center;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading p {
    color: var(--text-secondary);
}

/* 详情面板 */
.details-panel {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background: var(--card-bg);
    border-left: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    transition: right 0.3s ease;
    z-index: 1000;
    overflow-y: auto;
}

.details-panel.active {
    right: 0;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px;
    border-bottom: 1px solid var(--border-color);
}

.panel-header h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 2rem;
    cursor: pointer;
    transition: color 0.3s ease;
    line-height: 1;
}

.close-btn:hover {
    color: var(--accent-color);
}

.panel-content {
    padding: 25px;
}

.placeholder {
    text-align: center;
    color: var(--text-muted);
    padding: 40px 0;
}

/* 底部样式 */
.footer {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-logo {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.status {
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.status.online {
    background: rgba(0, 255, 136, 0.2);
    color: var(--success-color);
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .container {
        padding: 15px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .ranking-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
    
    .filters {
        width: 100%;
        justify-content: space-between;
    }
    
    .details-panel {
        width: 100%;
        right: -100%;
    }
}

@media (max-width: 768px) {
    .title {
        font-size: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 15px;
    }
    
    .auth-section {
        gap: 6px;
    }
    
    .auth-section .auth-btn {
        font-size: 0.8rem;
        padding: 6px 10px;
    }
    
    .lang-btn {
        padding: 6px 8px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 15px;
    }
    
    .auth-section {
        gap: 6px;
    }
    
    .logo-container {
        flex-direction: column;
        gap: 10px;
    }
    
    .title {
        font-size: 1.8rem;
        text-align: center;
    }
    
    .main-content {
        padding: 20px;
    }
    
    .ranking-table th,
    .ranking-table td {
        padding: 12px 8px;
    }
}

/* ===== 账户系统样式 ===== */

/* 按钮通用样式 */
.nav-btn {
    padding: 8px 16px;
    border: none;
    border-radius: 20px;
    font-family: 'Exo 2', sans-serif;
    font-weight: 500;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    text-decoration: none;
}

/* 语言按钮 */
.lang-btn {
    background: transparent;
    border: 1px solid rgba(0, 212, 255, 0.3);
    color: var(--text-primary);
    padding: 8px 14px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    min-width: 50px;
    justify-content: center;
}

.lang-btn:hover {
    background: rgba(0, 212, 255, 0.15);
    border-color: var(--primary-color);
    transform: scale(1.05);
}

/* 插件按钮 */
.plugin-btn {
    background: linear-gradient(135deg, rgba(157, 78, 221, 0.2), rgba(108, 99, 255, 0.2));
    color: #c77dff;
    border: 1px solid rgba(157, 78, 221, 0.4);
}

.plugin-btn:hover {
    background: linear-gradient(135deg, rgba(157, 78, 221, 0.3), rgba(108, 99, 255, 0.3));
    box-shadow: 0 0 20px rgba(157, 78, 221, 0.4);
    transform: translateY(-2px);
}

/* 登录按钮 */
.login-btn {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.login-btn:hover {
    background: rgba(0, 212, 255, 0.15);
    box-shadow: var(--glow-primary);
    transform: translateY(-2px);
}

/* 注册按钮 */
.register-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--dark-bg);
    border: none;
    font-weight: 600;
}

.register-btn:hover {
    box-shadow: 0 0 25px rgba(0, 212, 255, 0.5);
    transform: translateY(-2px);
}

/* 账户入口区域 */
.auth-section {
    display: flex;
    gap: 8px;
    align-items: center;
}

/* 分隔线 */
.top-bar-divider {
    width: 1px;
    height: 24px;
    background: rgba(0, 212, 255, 0.2);
    margin: 0 4px;
}

/* 用户信息区域 */
.user-section {
    display: none;
    align-items: center;
    gap: 12px;
}

.user-avatar-small {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--primary-color);
}

.user-avatar-small img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-info-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.user-name-nav {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.user-rank-nav {
    color: var(--text-muted);
    font-size: 0.75rem;
}

.user-authcode-nav {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--success-color);
}

.user-authcode-nav code {
    background: rgba(0, 255, 136, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Orbitron', monospace;
    font-size: 0.7rem;
}

.copy-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px;
    transition: all 0.2s;
}

.copy-btn:hover {
    color: var(--primary-color);
    transform: scale(1.1);
}

/* 退出按钮 */
.logout-btn {
    background: rgba(255, 71, 87, 0.1);
    color: var(--danger-color);
    border: 1px solid rgba(255, 71, 87, 0.3);
}

.logout-btn:hover {
    background: rgba(255, 71, 87, 0.2);
    box-shadow: 0 0 15px rgba(255, 71, 87, 0.3);
}
    border: 1px solid var(--border-color);
}

.auth-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 25px;
    font-family: 'Exo 2', sans-serif;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.login-btn {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.login-btn:hover {
    background: rgba(0, 212, 255, 0.1);
    box-shadow: var(--glow-primary);
}

.register-btn {
    background: var(--primary-color);
    color: var(--dark-bg);
}

.plugin-btn {
    background: transparent;
    color: #9d4edd;
    border: 1px solid #9d4edd;
}

.plugin-btn:hover {
    background: rgba(157, 78, 221, 0.1);
    box-shadow: 0 0 20px rgba(157, 78, 221, 0.5);
}

.register-btn:hover {
    background: #00b8e6;
    box-shadow: var(--glow-primary);
}

.logout-btn {
    background: transparent;
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
    padding: 8px 15px;
    font-size: 0.9rem;
}

.logout-btn:hover {
    background: rgba(255, 71, 87, 0.1);
}

/* 用户头像和信息 */
.user-avatar-small {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--primary-color);
}

.user-avatar-small img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-info-nav {
    display: flex;
    flex-direction: column;
}

.user-name-nav {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.user-rank-nav {
    font-size: 0.8rem;
    color: var(--accent-color);
}

.user-authcode-nav {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 4px;
    background: rgba(0, 212, 255, 0.1);
    padding: 4px 8px;
    border-radius: 4px;
}

.user-authcode-nav code {
    font-family: 'Orbitron', monospace;
    font-size: 0.7rem;
    color: var(--accent-color);
}

.user-authcode-nav .copy-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 3px;
    transition: all 0.2s;
}

.user-authcode-nav .copy-btn:hover {
    color: var(--accent-color);
    background: rgba(0, 212, 255, 0.2);
}

/* 语言切换器 */
.lang-switcher {
    position: relative;
    flex-shrink: 0;
}

.lang-btn {
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1.1rem;
    transition: all 0.2s;
    min-width: 44px;
}

.lang-btn:hover {
    background: rgba(0, 212, 255, 0.2);
    border-color: var(--accent-color);
}

/* 语言下拉框 */
.lang-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: linear-gradient(135deg, rgba(10, 14, 23, 0.98), rgba(20, 30, 50, 0.98));
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 12px;
    padding: 8px;
    min-width: 160px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    z-index: 2000;
    animation: slideDown 0.2s ease;
}

.lang-dropdown.show {
    display: block;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: rgba(0, 212, 255, 0.05);
    border: 1px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.lang-option:hover {
    background: rgba(0, 212, 255, 0.15);
}

.lang-option.active {
    background: rgba(0, 212, 255, 0.2);
    border-color: rgba(0, 212, 255, 0.3);
}

.lang-option .flag {
    font-size: 1.2rem;
}

.lang-option .name {
    flex: 1;
}

.lang-option .check {
    color: var(--accent-color);
    opacity: 0;
    font-size: 0.8rem;
}

.lang-option.active .check {
    opacity: 1;
}

/* 模态框 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    width: 90%;
    max-width: 450px;
    padding: 0;
    box-shadow: 0 20px 60px rgba(0, 212, 255, 0.3);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 2rem;
    cursor: pointer;
    transition: color 0.3s ease;
    line-height: 1;
}

.modal-close:hover {
    color: var(--accent-color);
}

.modal-body {
    padding: 30px;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    background: var(--darker-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: 'Exo 2', sans-serif;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: var(--glow-primary);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.submit-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: 10px;
    color: white;
    font-family: 'Exo 2', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 10px;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.4);
}

.auth-switch {
    text-align: center;
    margin-top: 20px;
    color: var(--text-secondary);
}

.auth-switch a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.auth-switch a:hover {
    text-decoration: underline;
}

/* 响应式 */
@media (max-width: 768px) {
    .header {
        padding: 15px;
    }
    
    .top-bar {
        position: absolute;
        top: 15px;
        right: 15px;
        padding: 6px 10px;
        gap: 4px;
    }
    
    .nav-btn {
        padding: 5px 10px;
        font-size: 0.75rem;
    }
    
    .lang-btn {
        padding: 5px 8px;
        min-width: 36px;
    }
    
    .top-bar-divider {
        height: 18px;
        margin: 0 2px;
    }
    
    .user-section {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .modal-content {
        width: 95%;
        margin: 20px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 10px;
    }
    
    .top-bar {
        position: relative;
        top: auto;
        right: auto;
        justify-content: center;
        margin-bottom: 10px;
        flex-wrap: wrap;
        border-radius: 16px;
        padding: 8px;
    }
    
    .top-bar-divider {
        display: none;
    }
    
    .nav-btn {
        padding: 6px 12px;
        font-size: 0.8rem;
    }
    
    .logo-container {
        margin-top: 0;
    }
        flex-direction: column;
        gap: 10px;
    }
    
    .title {
        font-size: 1.8rem;
        text-align: center;
    }
    
    .main-content {
        padding: 20px;
    }
    
    .ranking-table th,
    .ranking-table td {
        padding: 12px 8px;
    }
}