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

        body {
            font-family: 'Inter', sans-serif;
            background: linear-gradient(240deg, #B0E0E6, #E6F2FF, #87CEFA, #F0F8FF);
            background-size: 100% 100%;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            padding: 20px;
            color: #1A365D;
        }

        .container {
            display: flex;
            gap: 40px;
            max-width: 1300px;
            width: 100%;
            perspective: 1000px;
        }

        .space-card {
            flex: 1;
            background: rgba(255, 255, 255, 0.9);
            border-radius: 20px;
            padding: 35px;
            text-align: center;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
            transition: all 0.6s cubic-bezier(0.23, 1, 0.32, 1);
            transform-style: preserve-3d;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(100, 149, 237, 0.2);
        }

        .space-card::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(45deg, transparent, rgba(173, 216, 230, 0.1), transparent);
            transform: rotate(-45deg);
            transition: all 0.5s ease;
            opacity: 0;
        }

        .space-card:hover::before {
            opacity: 1;
        }

        .space-card:hover {
            transform: translateY(-15px) rotateX(3deg) scale(1.02);
            box-shadow: 0 30px 60px rgba(0,0,0,0.15);
        }

        .space-card-icon {
            width: 120px;
            height: 120px;
            margin: 0 auto 25px;
            display: flex;
            justify-content: center;
            align-items: center;
            transition: all 0.4s ease;
            position: relative;
        }

        .space-card-icon svg {
            filter: drop-shadow(0 0 8px rgba(0,0,0,0.1));
        }

        .space-title {
            font-family: 'Sora', sans-serif;
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: #1A78C2;
            font-weight: 700;
            letter-spacing: 1px;
            position: relative;
        }

        .space-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            width: 50px;
            height: 3px;
            background: linear-gradient(90deg, transparent, #1A78C2, transparent);
            transform: translateX(-50%);
        }

        .space-description {
            color: #2D3748;
            margin-bottom: 30px;
            font-size: 1rem;
            line-height: 1.6;
            font-weight: 300;
        }

        .login-button {
            width: 100%;
            padding: 15px;
            border: none;
            border-radius: 50px;
            cursor: pointer;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
            font-size: 0.9rem;
            transform: perspective(1px) translateZ(0);
        }

        .student-button {
            background: linear-gradient(to right, #3B82F6, #1E40AF);
            color: white;
        }

        .teacher-button {
            background: linear-gradient(to right, #10B981, #047857);
            color: white;
        }

        .admin-button {
            background: linear-gradient(to right, #8B5CF6, #5B21B6);
            color: white;
        }

        .login-button:hover {
            transform: translateY(-8px) scale(1.05);
            box-shadow: 0 15px 25px rgba(0,0,0,0.2);
            opacity: 0.9;
        }

        @media (max-width: 768px) {
            .container {
                flex-direction: column;
                gap: 30px;
            }
        }