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

.bg-gradient-light {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.card {
    border-radius: 15px;
    overflow: hidden;
    transition: transform 0.3s ease-in-out;
}

.card:hover {
    transform: translateY(-5px);
}

.form-control, .input-group-text, .btn {
    border-radius: 8px;
}

.input-group-text {
    background-color: #f8f9fa;
    border-right: none;
}

.form-control:focus {
    box-shadow: none;
    border-color: #667eea;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-success {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    border: none;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(67, 233, 123, 0.4);
}

.alert {
    border-radius: 10px;
    border: none;
}

.toggle-password {
    border-radius: 0 8px 8px 0;
}

/* Spinner Animation */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}