body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.min-vh-100 {
    min-height: 100vh;
}

.card {
    border-radius: 15px;
    border: none;
}

.card-body {
    padding: 2.5rem;
}

.btn-primary {
    background-color: #667eea;
    border-color: #667eea;
}

.btn-primary:hover {
    background-color: #5a6fd1;
    border-color: #5a6fd1;
}

.input-group-text {
    background-color: #f8f9fa;
}

.form-control:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.25rem rgba(102, 126, 234, 0.25);
}