:root {
    --primary-color: #667eea;
    --primary-dark: #4c51bf;
    --primary-light: #7c3aed;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --border-color: #e2e8f0;
    --bg-white: #ffffff;
    --bg-light: #f7fafc;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

.nav-wrapper {
    position: relative;
    z-index: 1000;
    width: 100%;
}

.main-header {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.6) 0%, rgba(247, 250, 252, 0.6) 100%);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: all var(--transition-normal);
}

.main-header.scrolled {
    background: rgba(255, 255, 255, 0.75);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.main-header .container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 64px;
    position: relative;
    gap: var(--spacing-md);
    flex-wrap: nowrap;
}

.logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    z-index: 1001;
    min-width: 120px;
}

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: transform var(--transition-fast);
}

.logo a:hover {
    transform: translateY(-1px);
}

.logo-full {
    height: 40px;
    width: auto;
    transition: all var(--transition-normal);
}

.logo-icon {
    display: none;
    height: 32px;
    width: 32px;
}

.main-nav {
    display: flex;
    align-items: center;
    flex: 1 1 auto;
    justify-content: center;
    min-width: 0; /* 允许收缩 */
    max-width: none;
}

.main-nav ul {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--spacing-lg);
    flex-wrap: nowrap;
    min-width: fit-content;
}

.main-nav li {
    position: relative;
    flex-shrink: 0;
    white-space: nowrap;
}

.main-nav a {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 8px;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    min-width: fit-content;
}

.main-nav a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    opacity: 0;
    transform: scaleX(0);
    transform-origin: left;
    transition: all var(--transition-normal);
    border-radius: 8px;
}

.main-nav a:hover::before,
.main-nav a.active::before {
    opacity: 0.1;
    transform: scaleX(1);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-radius: 2px;
    animation: activeIndicator 0.3s ease-out;
}

@keyframes activeIndicator {
    from {
        width: 0;
        opacity: 0;
    }
    to {
        width: 20px;
        opacity: 1;
    }
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 24px;
    padding: var(--spacing-xs) var(--spacing-md);
    width: 260px; /* 减小默认宽度 */
    height: 44px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    margin-right: var(--spacing-md); /* 减小右边距 */
    flex-shrink: 1;
    min-width: 180px; /* 减小最小宽度 */
}

.search-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    opacity: 0;
    transition: opacity var(--transition-normal);
    border-radius: 22px;
}

.search-box:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: scale(1.02);
}

.search-box:focus-within::before {
    opacity: 0.05;
}

.search-box form {
    display: flex;
    align-items: center;
    width: 100%;
    position: relative;
    z-index: 1;
}

.search-box input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 14px;
    color: var(--text-primary);
    padding: var(--spacing-sm);
}

.search-box input::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

.search-box button {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    padding: var(--spacing-sm);
    border-radius: 50%;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-box button:hover {
    color: var(--primary-color);
    background: rgba(102, 126, 234, 0.1);
    transform: scale(1.1);
}

.user-area {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-shrink: 0;
    position: relative;
    min-width: 140px; /* 减小最小宽度 */
    transition: opacity 0.3s ease; /* 企业级平滑过渡效果 */
}

/* 企业级加载状态 */
.auth-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 80px;
    height: 32px;
}

.loading-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(102, 126, 234, 0.2);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.user-area::before {
    content: '';
    position: absolute;
    left: -20px; /* 调整分隔线位置 */
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 24px;
    background: linear-gradient(to bottom, transparent, rgba(102, 126, 234, 0.2) 20%, rgba(102, 126, 234, 0.2) 80%, transparent);
}

.login-buttons {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm); /* 减小按钮间距 */
}

.login-btn,
.register-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px; /* 减小内边距 */
    font-size: 14px;
    font-weight: 500;
    border-radius: 20px;
    text-decoration: none;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    min-width: 70px; /* 减小最小宽度 */
    height: 36px; /* 减小高度 */
    border: 2px solid transparent;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.login-btn {
    background: rgba(255, 255, 255, 0.85);
    color: var(--text-primary);
    border-color: rgba(102, 126, 234, 0.2);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.register-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.login-btn::before,
.register-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.login-btn:hover::before,
.register-btn:hover::before {
    left: 100%;
}

.login-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(255, 255, 255, 0.95);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.15);
}

.register-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    filter: brightness(1.05) saturate(1.1);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    position: relative;
}

/* 全局统一头像样式 - 所有页面共用 */
.user-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ff6d3f, #ff5c26);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(255, 109, 63, 0.2);
    text-transform: uppercase;
    overflow: hidden;
    position: relative;
}

.user-avatar:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(255, 109, 63, 0.3);
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

/* 确保所有页面头像大小一致的响应式设计 */
@media (max-width: 768px) {
    .user-avatar {
        width: 34px;
        height: 34px;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .user-avatar {
        width: 32px;
        height: 32px;
        font-size: 12px;
    }
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--spacing-sm);
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    border: 1px solid var(--border-color);
    min-width: 160px;
    max-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) translateX(0);
    transition: all var(--transition-normal);
    z-index: 1002;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.user-dropdown::before {
    content: '';
    position: absolute;
    top: -6px;
    right: 18px;
    width: 12px;
    height: 12px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-right: none;
    transform: rotate(45deg);
    border-radius: 2px 0 0 0;
}

.user-info:hover .user-dropdown,
.user-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) translateX(0);
}

.user-dropdown ul {
    list-style: none;
    margin: 0;
    padding: 8px;
}

.user-dropdown li {
    margin: 0;
}

.user-dropdown a {
    display: flex;
    align-items: center;
    padding: 10px 14px;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.user-dropdown a:hover {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.08), rgba(118, 75, 162, 0.08));
    color: var(--primary-color);
    transform: translateX(2px);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.1);
}

.user-dropdown a:active {
    transform: translateX(1px);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.12), rgba(118, 75, 162, 0.12));
}

.user-dropdown a[id="logout-button"] {
    color: #dc2626;
    border-top: 1px solid var(--border-color);
    margin-top: 4px;
    padding-top: 12px;
}

.user-dropdown a[id="logout-button"]:hover {
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.08), rgba(239, 68, 68, 0.08));
    color: #dc2626;
}

/* 通知按钮样式 */
.notification-btn {
    position: relative;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.2);
    border: none;
    overflow: hidden;
    margin-left: 8px;
}

.notification-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
    background: linear-gradient(135deg, #5a67d8, #667eea);
}

.notification-btn:active {
    transform: scale(0.98);
}

.notification-btn i {
    font-size: 16px;
    transition: all 0.3s ease;
}

.notification-btn:hover i {
    transform: rotate(10deg);
}

/* 通知红点 */
.notification-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 16px;
    height: 16px;
    background: linear-gradient(135deg, #ff4757, #ff3742);
    border-radius: 50%;
    font-size: 10px;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border: 2px solid white;
    box-shadow: 0 2px 6px rgba(255, 71, 87, 0.4);
    animation: notification-pulse 2s infinite;
    min-width: 16px;
    z-index: 1;
}

@keyframes notification-pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* 通知面板 */
.notification-panel {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    border: 1px solid var(--border-color);
    width: 320px;
    max-height: 400px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    z-index: 1003;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    overflow: hidden;
}

.notification-panel::before {
    content: '';
    position: absolute;
    top: -6px;
    right: 18px;
    width: 12px;
    height: 12px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-right: none;
    transform: rotate(45deg);
    border-radius: 2px 0 0 0;
}

.notification-panel.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.notification-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
}

.notification-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.notification-list {
    max-height: 300px;
    overflow-y: auto;
    padding: 8px;
}

.notification-item {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 4px;
    transition: all var(--transition-fast);
    cursor: pointer;
    border-left: 3px solid transparent;
}

.notification-item:hover {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
    border-left-color: var(--primary-color);
}

.notification-item.unread {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.08), rgba(118, 75, 162, 0.08));
    border-left-color: var(--primary-color);
}

.notification-item.unread::after {
    content: '';
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: #ff4757;
    border-radius: 50%;
}

.notification-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 4px 0;
    line-height: 1.4;
}

.notification-message {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0 0 8px 0;
    line-height: 1.4;
}

.notification-time {
    font-size: 12px;
    color: var(--text-muted);
    margin: 0;
}

.notification-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
    font-size: 14px;
}

.notification-empty i {
    font-size: 32px;
    margin-bottom: 12px;
    color: var(--text-muted);
    opacity: 0.5;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .notification-btn {
        width: 34px;
        height: 34px;
    }
    
    .notification-btn i {
        font-size: 14px;
    }
    
    .notification-badge {
        width: 14px;
        height: 14px;
        font-size: 9px;
        border-width: 1.5px;
    }
    
    .notification-panel {
        width: 280px;
        right: -10px;
    }
    
    .notification-panel::before {
        right: 24px;
    }
}

@media (max-width: 480px) {
    .notification-btn {
        width: 32px;
        height: 32px;
        margin-left: 6px;
    }
    
    .notification-btn i {
        font-size: 13px;
    }
    
    .notification-panel {
        width: 260px;
        right: -20px;
    }
}

@media (max-width: 768px) {
    .user-dropdown {
        right: -10px;
        min-width: 140px;
        margin-top: 8px;
    }
    
    .user-dropdown::before {
        right: 22px;
    }
    
    .user-dropdown a {
        padding: 12px 16px;
        font-size: 15px;
    }
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    cursor: pointer;
    border-radius: 8px;
    transition: all var(--transition-fast);
    background: transparent;
    border: none;
    padding: 0;
}

.mobile-menu-toggle:hover {
    background: rgba(102, 126, 234, 0.1);
}

.mobile-menu-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    margin: 2px 0;
    transition: all var(--transition-normal);
    border-radius: 1px;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.mobile-search {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.mobile-search .search-box {
    width: 100%;
    margin: 0;
}

.mobile-menu ul {
    list-style: none;
    margin: 0;
    padding: var(--spacing-lg);
}

.mobile-menu li {
    margin: 0;
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
}

.mobile-menu li:last-child {
    border-bottom: none;
}

.mobile-menu a {
    display: block;
    padding: var(--spacing-lg);
    color: var(--text-primary);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: all var(--transition-fast);
    border-radius: 8px;
    margin: var(--spacing-xs) 0;
}

.mobile-menu a:hover,
.mobile-menu a.active {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    color: var(--primary-color);
    transform: translateX(8px);
}

/* 响应式断点优化 */
@media (max-width: 1200px) {
    .main-nav ul {
        gap: var(--spacing-md);
    }
    
    .main-nav a {
        padding: var(--spacing-sm) 10px;
        font-size: 14px;
    }
    
    .search-box {
        width: 220px;
    }
}

@media (max-width: 1024px) {
    .search-box {
        width: 200px;
        margin-right: var(--spacing-sm);
    }
    
    .main-nav ul {
        gap: var(--spacing-sm);
    }
    
    .main-nav a {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 13px;
    }
    
    .main-header .container {
        gap: var(--spacing-sm);
        padding: 0 var(--spacing-md);
    }
    
    .user-area {
        min-width: 120px;
    }
    
    .user-area::before {
        left: -16px;
    }
}

@media (max-width: 900px) {
    .main-nav {
        min-width: 0;
    }
    
    .main-nav ul {
        gap: 6px;
    }
    
    .main-nav a {
        padding: 6px 8px;
        font-size: 12px;
    }
    
    .search-box {
        width: 160px;
        min-width: 140px;
    }
    
    .login-btn,
    .register-btn {
        padding: 6px 12px;
        font-size: 12px;
        min-width: 60px;
        height: 32px;
    }
    
    .user-area {
        gap: var(--spacing-sm);
        min-width: 100px;
    }
}

@media (max-width: 768px) {
    .main-header .container {
        padding: 0 var(--spacing-md);
        gap: var(--spacing-md);
    }
    
    .main-nav,
    .search-box {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .logo-full {
        display: none;
    }
    
    .logo-icon {
        display: block;
    }
    
    .user-area {
        order: 2;
        gap: var(--spacing-sm);
    }
    
    .user-area::before {
        display: none;
    }
    
    .mobile-menu-toggle {
        order: 3;
    }
    
    .login-buttons {
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .main-header .container {
        padding: 0 var(--spacing-sm);
        min-height: 56px;
    }
    
    .login-btn,
    .register-btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: 13px;
        min-width: 70px;
        height: 36px;
    }
    
    .user-avatar {
        width: 32px;
        height: 32px;
        font-size: 13px;
    }
}

/* 确保导航项不换行 */
.main-nav ul li {
    display: inline-flex;
    flex-shrink: 0;
}

.main-nav ul li a {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    max-width: none;
}

/* 性能优化 */
.main-header,
.mobile-menu {
    will-change: transform;
}

.main-nav a,
.login-btn,
.register-btn {
    will-change: transform;
}

/* 无障碍支持 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (prefers-contrast: high) {
    .main-header {
        border-bottom-width: 2px;
    }
    
    .main-nav a:hover,
    .main-nav a.active {
        text-decoration: underline;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #f7fafc;
        --text-secondary: #e2e8f0;
        --text-muted: #a0aec0;
        --border-color: #2d3748;
        --bg-white: #1a202c;
        --bg-light: #2d3748;
    }
    
    .main-header {
        background: linear-gradient(135deg, rgba(26, 32, 44, 0.95) 0%, rgba(45, 55, 72, 0.95) 100%);
    }
}

/* 会员等级徽章样式 */
.member-badge {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.7rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: all var(--transition-normal);
    margin-right: 0.75rem;
    border: 1px solid transparent;
    white-space: nowrap;
}

/* 普通用户样式 */
.member-badge.normal {
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    color: #64748b;
    border-color: #cbd5e1;
}

.member-badge.normal .member-icon {
    color: #94a3b8;
}

/* Basic会员样式 */
.member-badge.basic {
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
    color: #059669;
    border-color: #34d399;
    box-shadow: 0 2px 8px rgba(52, 211, 153, 0.2);
}

.member-badge.basic .member-icon {
    color: #10b981;
}

/* Pro会员样式 */
.member-badge.pro {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    color: #2563eb;
    border-color: #3b82f6;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.2);
}

.member-badge.pro .member-icon {
    color: #1d4ed8;
}

/* Premium会员样式 */
.member-badge.premium {
    background: linear-gradient(135deg, #fdf2f8 0%, #fce7f3 100%);
    color: #c2185b;
    border-color: #ec4899;
    box-shadow: 0 2px 8px rgba(236, 72, 153, 0.2);
}

.member-badge.premium .member-icon {
    color: #be185d;
}

/* 会员图标样式 - 提高优先级确保头部徽章正确显示 */
.member-badge .member-icon {
    font-size: 0.85rem;
    transition: transform var(--transition-fast);
}

/* 加载状态样式 */
.member-badge.loading {
    opacity: 0.7;
    pointer-events: none;
}

.member-badge.loading .member-icon {
    animation: memberLoading 1.5s ease-in-out infinite;
}

@keyframes memberLoading {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* 防止闪烁的预加载状态 */
.member-badge.preload {
    visibility: hidden;
    opacity: 0;
    transition: all var(--transition-fast);
}

.member-badge.ready {
    visibility: visible;
    opacity: 1;
}

/* 悬停效果 */
.member-badge:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.member-badge:hover .member-icon {
    transform: scale(1.1);
}

/* 用户信息区域布局调整 */
.user-info {
    display: flex;
    align-items: center;
    position: relative;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .member-badge {
        font-size: 0.7rem;
        padding: 0.3rem 0.5rem;
        margin-right: 0.5rem;
        gap: 0.3rem;
    }
    
    .member-text {
        display: none; /* 移动端只显示图标 */
    }
}

@media (max-width: 480px) {
    .member-badge {
        padding: 0.25rem 0.4rem;
        margin-right: 0.3rem;
    }
}