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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            color: #333;
        }

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

        /* Header */
        .header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            padding: 20px;
            margin-bottom: 30px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
        }

        .nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .logo {
            font-size: 28px;
            font-weight: bold;
            color: #667eea;
            text-decoration: none;
        }

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

        .nav-link {
            padding: 10px 20px;
            border-radius: 25px;
            text-decoration: none;
            color: #666;
            transition: all 0.3s ease;
            font-weight: 500;
        }

        .nav-link:hover, .nav-link.active {
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            transform: translateY(-2px);
        }

        /* Search Section */
        .search-section {
            background: rgba(255, 255, 255, 0.9);
            border-radius: 20px;
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
        }

        .search-form {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
        }

        .search-input {
            flex: 1;
            min-width: 250px;
            padding: 15px 20px;
            border: 2px solid #e1e8ed;
            border-radius: 25px;
            font-size: 16px;
            transition: all 0.3s ease;
        }

        .search-input:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }

        .filter-select {
            padding: 15px 20px;
            border: 2px solid #e1e8ed;
            border-radius: 25px;
            font-size: 16px;
            background: white;
            cursor: pointer;
        }

        .search-btn {
            padding: 15px 30px;
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            border: none;
            border-radius: 25px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .search-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
        }

        /* Teachers Grid */
        .teachers-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 25px;
            margin-bottom: 30px;
        }

        .teacher-card {
            background: rgba(255, 255, 2555, 0.95);
            border-radius: 20px;
            padding: 25px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .teacher-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
        }

        .teacher-header {
            display: flex;
            items-center;
            gap: 15px;
            margin-bottom: 15px;
        }

        .teacher-avatar {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: linear-gradient(135deg, #667eea, #764ba2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 24px;
            font-weight: bold;
        }

        .teacher-info h3 {
            color: #333;
            margin-bottom: 5px;
        }

        .teacher-subject {
            color: #666;
            font-size: 14px;
        }

        .rating {
            display: flex;
            align-items: center;
            gap: 5px;
            margin: 10px 0;
        }

        .stars {
            color: #ffc107;
            font-size: 18px;
        }

        .rating-text {
            color: #666;
            font-size: 14px;
        }

        .teacher-stats {
            display: flex;
            justify-content: space-between;
            margin: 15px 0;
            padding: 15px;
            background: rgba(102, 126, 234, 0.1);
            border-radius: 15px;
        }

        .stat {
            text-align: center;
        }

        .stat-value {
            font-size: 20px;
            font-weight: bold;
            color: #667eea;
        }

        .stat-label {
            font-size: 12px;
            color: #666;
        }

        .teacher-bio {
            color: #666;
            font-size: 14px;
            line-height: 1.5;
            margin-bottom: 15px;
        }

        .teacher-actions {
            display: flex;
            gap: 10px;
        }

        .btn {
            padding: 10px 20px;
            border: none;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            text-align: center;
        }

        .btn-primary {
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
        }

        .btn-outline {
            background: transparent;
            border: 2px solid #667eea;
            color: #667eea;
        }

        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
        }

        /* Modal */
        .modal {
            display: none;
            position: fixed;
            z-index: 1000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(5px);
        }

        .modal-content {
            background: white;
            margin: 5% auto;
            padding: 30px;
            border-radius: 20px;
            width: 80%;
            max-width: 600px;
            max-height: 80vh;
            overflow-y: auto;
        }

        .close {
            color: #aaa;
            float: right;
            font-size: 28px;
            font-weight: bold;
            cursor: pointer;
        }

        .close:hover {
            color: #000;
        }

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

        .form-label {
            display: block;
            margin-bottom: 5px;
            font-weight: 500;
            color: #333;
        }

        .form-input {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid #e1e8ed;
            border-radius: 10px;
            font-size: 16px;
            transition: all 0.3s ease;
        }

        .form-input:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }

        .reviews-list {
            max-height: 300px;
            overflow-y: auto;
            margin-top: 20px;
        }

        .review {
            padding: 15px;
            background: #f8f9fa;
            border-radius: 10px;
            margin-bottom: 10px;
        }

        .review-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 10px;
        }

        .review-author {
            font-weight: bold;
            color: #333;
        }

        .review-date {
            color: #666;
            font-size: 12px;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .nav {
                flex-direction: column;
                gap: 15px;
            }

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

            .search-input {
                min-width: 100%;
            }

            .teachers-grid {
                grid-template-columns: 1fr;
            }

            .teacher-stats {
                flex-direction: column;
                gap: 10px;
            }

            .modal-content {
                width: 95%;
                margin: 10% auto;
            }
        }

        /* Animation */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .teacher-card {
            animation: fadeInUp 0.6s ease;
        }