body {
            box-sizing: border-box;
            font-family: 'Cairo', 'Inter', sans-serif;
        }
        
        .hero-bg {
            background: linear-gradient(135deg, #1e40af 0%, #3b82f6 50%, #60a5fa 100%);
            position: relative;
            overflow: hidden;
        }
        
        .hero-bg::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
        }
         .teacher-card {
            transition: all 0.3s ease;
        }
        
        .teacher-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
        }
        
        .modal {
            opacity: 0;
            visibility: hidden;
            transform: scale(0.8);
            transition: all 0.3s ease;
        }
        
        .modal.active {
            opacity: 1;
            visibility: visible;
            transform: scale(1);
        }
        
        .modal-backdrop {
            backdrop-filter: blur(4px);
            background: rgba(0, 0, 0, 0.5);
        }
        
        .form-input {
            transition: all 0.3s ease;
        }
        
        .form-input:focus {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px -5px rgba(59, 130, 246, 0.15);
        }
        
        .whatsapp-btn {
            background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
        }
        
        .whatsapp-btn:hover {
            background: linear-gradient(135deg, #128C7E 0%, #075E54 100%);
        }
        
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            animation: fadeInUp 0.6s ease forwards;
        }
        
        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .stagger-1 { animation-delay: 0.1s; }
        .stagger-2 { animation-delay: 0.2s; }
        .stagger-3 { animation-delay: 0.3s; }
        .stagger-4 { animation-delay: 0.4s; }
        .stagger-5 { animation-delay: 0.5s; }
        .stagger-6 { animation-delay: 0.6s; }
        
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }
        
        .accordion-content.active {
            max-height: 1000px;
        }