/* Main Styles for WP Billing App */
:root {
    --primary-color: #4e73df;
    --secondary-color: #1cc88a;
    --danger-color: #e74a3b;
    --warning-color: #f6c23e;
    --info-color: #36b9cc;
    --light-color: #f8f9fc;
    --dark-color: #5a5c69;
    --shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.15);
}

.wp-billing-app-public {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 15px;
}

.billing-form-title {
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 10px;
}

.billing-form-title:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--primary-color);
}

.card {
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: var(--shadow);
}

.card-header {
    font-weight: 600;
    padding: 0.75rem 1.25rem;
}

.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.input-group-text {
    background-color: var(--light-color);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(78, 115, 223, 0.25);
}

/* Table Styling */
.table {
    margin-bottom: 0;
}

.table th {
    background-color: var(--light-color);
    font-weight: 600;
}

.table-hover tbody tr:hover {
    background-color: rgba(78, 115, 223, 0.05);
}

/* Button Styling */
.btn {
    font-weight: 500;
    border-radius: 4px;
    transition: all 0.2s;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: #2e59d9;
    border-color: #2653d4;
}

.btn-success {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.btn-success:hover {
    background-color: #17a673;
    border-color: #169b6b;
}

.btn-danger {
    background-color: var(--danger-color);
    border-color: var(--danger-color);
}

.btn-danger:hover {
    background-color: #e02d1b;
    border-color: #d52a1a;
}

.btn-info {
    background-color: var(--info-color);
    border-color: var(--info-color);
}

.btn-info:hover {
    background-color: #2ca8c7;
    border-color: #2a9fbe;
}

/* Form Actions */
.form-actions {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #e3e6f0;
}

/* Alert Styling */
.alert {
    border-radius: 8px;
    padding: 1rem;
}

.alert-success {
    background-color: #eafaf1;
    border-color: #d5f5e3;
    color: #1e8449;
}

.alert-danger {
    background-color: #fdecea;
    border-color: #f5b7b1;
    color: #922b21;
}

/* Modal Styling */
.modal-content {
    border: none;
    border-radius: 8px;
    overflow: hidden;
}

.modal-header {
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.modal-footer {
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

/* Invoice Preview */
#previewContent {
    padding: 20px;
    background: #fff;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .card {
        margin-bottom: 1.5rem;
    }
    
    .form-actions button {
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .table-responsive {
        border: none;
    }
    
    .input-group-text {
        display: none;
    }
}