body {
    background-color: #f8f9fa;
}

.card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}

.card-header {
    border-radius: 15px 15px 0 0 !important;
    background: linear-gradient(45deg, #dc3545, #ff4757) !important;
}

.form-control, .form-select {
    padding: 12px;
    border-radius: 8px;
    border: 2px solid #eee;
}

.form-control:focus, .form-select:focus {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.2rem rgba(220,53,69,.25);
}

.btn-danger {
    background: linear-gradient(45deg, #dc3545, #ff4757);
    border: none;
    padding: 12px;
    border-radius: 8px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-danger:hover {
    background: linear-gradient(45deg, #ff4757, #dc3545);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(220,53,69,.3);
}

select.form-control {
    height: 48px;
}

.alert {
    border-radius: 8px;
    margin-top: 20px;
}

#loading {
    padding: 20px;
    border-radius: 8px;
    background: rgba(255,255,255,0.9);
}

.spinner-border {
    width: 3rem;
    height: 3rem;
}