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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: url('campus.jpg') no-repeat center center fixed;
    background-size: cover;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1;
}

.container {
    width: 100%;
    max-width: 600px;
    position: relative;
    z-index: 2;
}

.welcome-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.logo-section {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    max-width: 150px;
    height: auto;
    margin-bottom: 20px;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.logo-section h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 10px;
    letter-spacing: -0.5px;
}

.logo-section p {
    color: #666;
    font-size: 1.1rem;
    font-weight: 400;
}

.selection-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.option-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    padding: 30px 20px;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.option-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.1);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.option-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(102, 126, 234, 0.4);
}

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

.option-card:active {
    transform: translateY(-2px);
}

.option-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    display: block;
}

.option-card h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
}

.option-card p {
    font-size: 0.9rem;
    opacity: 0.9;
    line-height: 1.4;
    position: relative;
    z-index: 1;
}

.student-option {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
}

.staff-option {
    background: linear-gradient(135deg, #059669 0%, #0d9488 100%);
}

.footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #e5e7eb;
    color: #6b7280;
    font-size: 0.85rem;
}

/* Responsive design */
@media (max-width: 768px) {
    .selection-options {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .welcome-card {
        padding: 30px 20px;
    }
    
    .logo-section h1 {
        font-size: 2rem;
    }
    
    .option-card {
        padding: 25px 15px;
    }
    
    .option-icon {
        font-size: 2.5rem;
    }
}