:root {
            --primary-color: #4361ee;
            --secondary-color: #f5f5f5;
            --text-color: #333;
            --border-color: #e0e0e0;
            --hover-color: #357abd;
            --danger-color: #e74c3c;
            --success-color: #2ecc71;
            --warning-color: #f1c40f;
            --border-radius: 8px;
            --box-shadow: 0 2px 4px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }

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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: #f9f9f9;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }

        /* 导航栏样式 */
        .fixed-navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background-color: white;
            padding: 15px 20px;
            box-shadow: var(--box-shadow);
            display: flex;
            justify-content: space-between;
            align-items: center;
            z-index: 1000;
        }

        .nav-links {
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .nav-links a {
            color: var(--text-color);
            text-decoration: none;
            padding: 8px 15px;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }

        .nav-links a:hover {
            background-color: var(--secondary-color);
            color: var(--primary-color);
        }

        .login-status {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .welcome-text {
            color: var(--text-color);
            font-weight: 500;
        }

        /* 按钮样式 */
        .btn {
            padding: 8px 16px;
            border: none;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 500;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary {
            background-color: var(--primary-color);
            color: white;
        }

        .btn-primary:hover {
            background-color: var(--hover-color);
        }

        .btn-secondary {
            background-color: var(--secondary-color);
            color: var(--text-color);
        }

        .btn-secondary:hover {
            background-color: #e0e0e0;
        }

        .btn-danger {
            background-color: var(--danger-color);
            color: white;
        }

        .btn-danger:hover {
            background-color: #c0392b;
        }

        .btn-yellow {
            background-color: var(--warning-color);
            color: var(--text-color);
        }

        .btn-yellow:hover {
            background-color: #f39c12;
        }

        /* 搜索框样式 */
        .search-container {
            margin: 80px 0 20px;
            padding: 20px;
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
        }

        .search-form {
            display: flex;
            gap: 10px;
        }

        .search-input {
            flex: 1;
            padding: 10px 15px;
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            font-size: 16px;
        }

        /* 过滤器样式 */
        .filter-section {
            margin-bottom: 20px;
            background-color: white;
            padding: 20px;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
        }

        .filter-section h3 {
            margin-bottom: 15px;
            color: var(--text-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .filter-scroll {
            overflow-x: auto;
            padding-bottom: 10px;
        }

        .filter-links {
            display: flex;
            gap: 10px;
            flex-wrap: nowrap;
        }

        .filter-links a {
            padding: 8px 15px;
            background-color: var(--secondary-color);
            border-radius: var(--border-radius);
            color: var(--text-color);
            text-decoration: none;
            white-space: nowrap;
            transition: var(--transition);
        }

        .filter-links a:hover,
        .filter-links a.active {
            background-color: var(--primary-color);
            color: white;
        }

        /* 记事本列表样式 */
        .form-card {
            background-color: white;
            padding: 20px;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            margin-bottom: 20px;
        }

        .form-card h2 {
            margin-bottom: 20px;
            color: var(--text-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .note-list {
            list-style: none;
        }

        .note-item {
            padding: 15px;
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .note-item:last-child {
            border-bottom: none;
        }

        .note-item:hover {
            background-color: var(--secondary-color);
        }

        .note-title {
            color: var(--text-color);
            text-decoration: none;
            font-weight: 500;
            font-size: 18px;
            display: block;
            margin-bottom: 10px;
        }

        .note-title.highlight {
            color: var(--primary-color);
        }

        .note-meta {
            display: flex;
            gap: 20px;
            margin-bottom: 10px;
            color: #666;
            font-size: 14px;
        }

        .note-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .status {
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 500;
        }

        .status-red {
            background-color: #ffebee;
            color: var(--danger-color);
        }

        .note-actions {
            display: flex;
            gap: 10px;
            margin-top: 10px;
        }

        /* 分页样式 */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-top: 20px;
        }

        .pagination a,
        .pagination span {
            padding: 8px 15px;
            background-color: var(--secondary-color);
            border-radius: var(--border-radius);
            color: var(--text-color);
            text-decoration: none;
            transition: var(--transition);
        }

        .pagination a:hover {
            background-color: var(--primary-color);
            color: white;
        }

        /* 移动端菜单样式 */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--text-color);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 60px;
            left: 0;
            right: 0;
            background-color: white;
            padding: 20px;
            box-shadow: var(--box-shadow);
            z-index: 999;
        }

        .mobile-menu a {
            display: block;
            padding: 10px 0;
            color: var(--text-color);
            text-decoration: none;
            border-bottom: 1px solid var(--border-color);
        }

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

        /* 响应式设计 */
        @media (max-width: 768px) {
            .container {
                padding: 10px;
            }

            .mobile-menu-btn {
                display: block;
                background: none;
                border: none;
                font-size: 24px;
                cursor: pointer;
                color: var(--text-color);
                padding: 5px;
            }

            .nav-links {
                display: none;
            }

            .mobile-menu {
                display: none;
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background-color: white;
                padding: 20px;
                box-shadow: var(--box-shadow);
                z-index: 999;
            }

            .mobile-menu.active {
                display: block;
            }

            .mobile-menu a {
                display: block;
                padding: 10px 0;
                color: var(--text-color);
                text-decoration: none;
                border-bottom: 1px solid var(--border-color);
            }

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

            /* 修改顶部导航栏按钮样式 */
            .login-status {
                display: flex;
                align-items: center;
                gap: 5px;
            }

            .login-status .btn {
                padding: 5px 10px;
                font-size: 14px;
                white-space: nowrap;
            }

            .welcome-text {
                font-size: 14px;
                white-space: nowrap;
            }

            .search-form {
                flex-direction: column;
            }

            .note-meta {
                flex-direction: column;
                gap: 5px;
            }

            .note-actions {
                flex-wrap: wrap;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* 登录表单样式 */
        .login-container {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .login-container input {
            padding: 8px 15px;
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            font-size: 14px;
        }

        @media (max-width: 480px) {
            .login-container {
                flex-direction: row; /* 修改为水平排列 */
                flex-wrap: nowrap; /* 防止换行 */
                gap: 5px; /* 减小间距 */
                width: 100%; /* 确保容器占满宽度 */
                justify-content: flex-start; /* 左对齐 */
            }

            .login-container input {
                width: auto; /* 修改宽度为自动 */
                flex: 0.7; /* 缩小30%，原来是1 */
                padding: 6px 10px; /* 减小内边距 */
                font-size: 13px; /* 减小字体大小 */
                min-width: 0; /* 防止输入框溢出 */
                max-width: 28%; /* 缩小30%，原来是40% */
            }
            
            .login-container button {
                width: auto; /* 修改宽度为自动 */
                white-space: nowrap; /* 防止按钮文字换行 */
                padding: 6px 10px; /* 减小内边距 */
                font-size: 13px; /* 减小字体大小 */
                flex-shrink: 0; /* 防止按钮被压缩 */
                min-width: 60px; /* 设置最小宽度 */
                margin-left: 0; /* 移除自动边距，使按钮靠近密码框 */
            }
        }
        
        /* 针对更小屏幕的优化 */
        @media (max-width: 360px) {
            .login-container input {
                max-width: 25%; /* 缩小30%，原来是35% */
            }
            
            .login-container button {
                min-width: 50px; /* 更小屏幕上减小按钮最小宽度 */
            }
        }

        /* 新建内容弹窗样式 */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(0, 0, 0, 0.5);
            display: none;
            justify-content: center;
            align-items: center;
            z-index: 1000;
        }

        .modal-content {
            background-color: white;
            border-radius: var(--border-radius);
            width: 90%;
            max-width: 600px;
            max-height: 90vh;
            overflow-y: auto;
            box-shadow: var(--box-shadow);
            animation: modalSlideIn 0.3s ease;
        }

        @keyframes modalSlideIn {
            from {
                transform: translateY(-20px);
                opacity: 0;
            }
            to {
                transform: translateY(0);
                opacity: 1;
            }
        }

        .modal-header {
            padding: 20px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: var(--secondary-color);
            border-radius: var(--border-radius) var(--border-radius) 0 0;
        }

        .modal-header h3 {
            margin: 0;
            color: var(--text-color);
            font-size: 1.2em;
        }

        .modal-close {
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--text-color);
            padding: 0;
            width: 30px;
            height: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: var(--transition);
        }

        .modal-close:hover {
            background-color: rgba(0, 0, 0, 0.1);
        }

        .modal-body {
            padding: 20px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .modal-input,
        .modal-textarea,
        .modal-select {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            font-size: 16px;
            transition: var(--transition);
            background-color: white;
        }

        .modal-input:focus,
        .modal-textarea:focus,
        .modal-select:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 2px rgba(74, 144, 226, 0.2);
            outline: none;
        }

        .modal-textarea {
            min-height: 150px;
            resize: vertical;
        }

        .form-row {
            display: flex;
            gap: 15px;
            margin-bottom: 20px;
        }

        .form-row .form-group {
            flex: 1;
            margin-bottom: 0;
        }

        .file-upload-label {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
        }

        .file-upload-btn {
            padding: 8px 16px;
            background-color: var(--secondary-color);
            color: var(--text-color);
            border-radius: var(--border-radius);
            cursor: pointer;
            transition: var(--transition);
        }

        .file-upload-btn:hover {
            background-color: var(--border-color);
        }

        .file-names {
            font-size: 14px;
            color: #666;
            margin-top: 5px;
        }

        .form-actions {
            display: flex;
            justify-content: flex-end;
            gap: 10px;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
        }

        @media (max-width: 768px) {
            .modal-content {
                width: 95%;
                margin: 10px;
            }

            .form-row {
                flex-direction: column;
                gap: 10px;
            }

            .form-actions {
                flex-direction: column;
            }

            .form-actions button {
                width: 100%;
            }
        }

        .custom-confirm-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(0, 0, 0, 0.5);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 1000;
        }
        
        .custom-confirm-box {
            background-color: white;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            max-width: 400px;
            width: 90%;
        }
        
        .custom-confirm-title {
            font-size: 18px;
            font-weight: bold;
            margin-bottom: 10px;
            color: #333;
        }
        
        .custom-confirm-message {
            margin-bottom: 20px;
            color: #666;
        }
        
        .custom-confirm-buttons {
            display: flex;
            justify-content: flex-end;
            gap: 10px;
        }
        
        .custom-confirm-btn {
            padding: 8px 16px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
        }
        
        .custom-confirm-btn-cancel {
            background-color: #f5f5f5;
            color: #333;
        }
        
        .custom-confirm-btn-confirm {
            background-color: #dc3545;
            color: white;
        }
        
        .custom-confirm-btn:hover {
            opacity: 0.9;
        }