/* 渐变背景 */
    .gradient-bg {
        /*background: linear-gradient(135deg, #6B73FF 0%, #000DFF 100%);*/
        background: linear-gradient(135deg, #787ef7 0%, #3b42c5 100%);
    }
    
    /* 自定义滚动条 */
    ::-webkit-scrollbar {
        width: 8px;
    }
    ::-webkit-scrollbar-track {
        background: #f1f1f1;
    }
    ::-webkit-scrollbar-thumb {
        background: #888;
        border-radius: 4px;
    }
    ::-webkit-scrollbar-thumb:hover {
        background: #555;
    }

    /* 按钮渐变效果 */
    .btn-login {
        background: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
    }
    .btn-register {
        background: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%);
    }
    .btn-login:hover, .btn-register:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }


        /* 用户信息下拉菜单样式 */
        .user-menu {
            display: none;
            position: absolute;
            right: 0;
            top: 100%;
            background: white;
            min-width: 200px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            border-radius: 4px;
            z-index: 100;
            padding: 0.5rem 0;
        }
        
        .user-menu.show {
            display: block;
        }
        
        .user-menu a {
            display: block;
            padding: 0.5rem 1rem;
            color: #333;
            /*transition: background-color 0.2s;*/
        }
        
        .user-menu a:hover {
            background-color: #f5f5f5;
        }
        
        .user-menu .border-t {
            margin: 0.5rem 0;
        }


        /* 移动端导航菜单样式 */
        .mobile-nav-menu {
            display: none;
            position: fixed;
            top: 60px;
            left: 0;
            width: 100%;
            background: rgba(0, 0, 0, 0.9);
            z-index: 100;
            padding: 1rem;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        }
        
        .mobile-nav-menu.show {
            display: block;
        }
        
        .mobile-nav-menu a {
            display: block;
            color: white;
            padding: 0.75rem 1rem;
            margin: 0.25rem 0;
            border-radius: 4px;
            transition: background-color 0.3s;
        }
        
        .mobile-nav-menu a:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }


    /* 语言选择下拉菜单 */
    .language-selector {
        position: relative;
        display: inline-block;
    }
    .language-menu {
        display: none;
        position: absolute;
        right: 0;
        top: 100%;
        background: white;
        min-width: 120px;
        box-shadow: 0 8px 16px rgba(0,0,0,0.1);
        border-radius: 8px;
        z-index: 100;
    }
    .language-selector:hover .language-menu {
        display: block;
    }
    .language-menu a {
        display: block;
        padding: 8px 12px;
        color: #333;
        text-decoration: none;
    }
    .language-menu a:hover {
        background: #f5f5f5;
    }
    .language-menu a.active {
        background: #e5e7eb;
        font-weight: 500;
    }
    .language-flag {
        width: 20px;
        height: 15px;
        margin-right: 8px;
        border-radius: 2px;
    }


    /* 暗色模式样式 */
    .dark-mode {
        background-color: #1a202c;
        color: #e2e8f0;
    }
    .dark-mode .gradient-bg {
        background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
    }
    .dark-mode .bg-white {
        background-color: #2d3748;
    }
    .dark-mode .bg-gray-50,
    .dark-mode .bg-green-50,
    .dark-mode .bg-yellow-50,
    .dark-mode .bg-purple-50,
    .dark-mode .bg-blue-50 {
        background-color: #1a202c;
    }
    .dark-mode .text-gray-600,
    .dark-mode .text-gray-700,
    .dark-mode .text-gray-800 {
        color: #e2e8f0;
    }
    .dark-mode .text-blue-600 {
        color: #90cdf4;
    }
    .dark-mode .border-gray-100 {
        border-color: #4a5568;
    }
    .dark-mode .shadow-md {
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    }
    .dark-mode .user-menu,
    .dark-mode .language-menu {
        background-color: #2d3748;
        box-shadow: 0 8px 16px rgba(0,0,0,0.3);
    }
    .dark-mode .user-menu a,
    .dark-mode .language-menu a {
        color: #e2e8f0;
    }
    .dark-mode .user-menu a:hover,
    .dark-mode .language-menu a:hover {
        background-color: #4a5568;
    }
    .dark-mode .bg-gray-100 {
        background-color: #4a5568;
        color: #e2e8f0;
    }
    .dark-mode .bg-gray-100:hover {
        background-color: #5a6778;
    }
    .dark-mode .bg-blue-100 {
        background-color: #2c5282;
    }


    /* 禁用按钮样式 */
    button:disabled {
        color: #817d7d; /* 深灰色文字 */
        cursor: not-allowed; /* 鼠标显示禁止符号 */
    }


    /* 新增：评论区域样式 */
    .comment-section {
        border-top: 4px solid #4f46e5;
        padding-top: 2rem;
        margin-top: 3rem;
    }
    .comment-card {
        background: white;
        border-radius: 10px;
        padding: 1.5rem;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
        transition: all 0.3s ease;
    }
    .comment-card:hover {
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
        transform: translateY(-3px);
    }
    .comment-header {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 1rem;
    }
    .user-avatar {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: linear-gradient(135deg, #6366f1, #8b5cf6);
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-weight: bold;
        font-size: 18px;
    }
    .comment-content {
        padding-left: 52px;
        line-height: 1.6;
        color: #4b5563;
    }
    .comment-meta {
        display: flex;
        justify-content: space-between;
        margin-top: 1rem;
        color: #9ca3af;
        font-size: 0.875rem;
    }
    .pagination {
        display: flex;
        justify-content: center;
        gap: 8px;
        margin-top: 2rem;
    }
    .page-btn {
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 8px;
        background: white;
        border: 1px solid #e5e7eb;
        cursor: pointer;
        font-weight: 600;
        transition: all 0.2s;
    }
    .page-btn:hover {
        background: #4f46e5;
        color: white;
        border-color: #4f46e5;
    }
    .page-btn.active {
        background: #4f46e5;
        color: white;
        border-color: #4f46e5;
    }
    .char-counter {
        text-align: right;
        font-size: 0.875rem;
        color: #6b7280;
        margin-top: 4px;
    }
    .char-counter.warning {
        color: #ef4444;
    }
    @keyframes spin {
        to { transform: rotate(360deg); }
    }