:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --dark-color: #1f2937;
    --light-color: #f3f4f6;
    --border-color: #e5e7eb;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f9fafb;
    color: #374151;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 30px 0;
    margin-bottom: 30px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.header h1 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
}

.nav-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.nav-tab {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    padding: 12px 24px;
    cursor: pointer;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s;
}

.nav-tab:hover {
    background: rgba(255, 255, 255, 0.3);
}

.nav-tab.active {
    background: white;
    color: var(--primary-color);
    font-weight: 600;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.card {
    background: white;
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--dark-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark-color);
}

.form-group label.required::after {
    content: ' *';
    color: var(--danger-color);
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.phone-group {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 10px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
}

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

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

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

.btn-success:hover {
    background: #059669;
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-secondary {
    background: #6b7280;
    color: white;
}

.btn-secondary:hover {
    background: #4b5563;
}

.btn-group {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
}

.icon-btn {
    background: none;
    border: none;
    padding: 6px;
    cursor: pointer;
    color: #6b7280;
    transition: all 0.2s;
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    background: #f3f4f6;
    color: var(--primary-color);
}

.icon-btn:active {
    transform: scale(0.95);
}

.icon-btn svg {
    display: block;
}

.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table thead {
    background: var(--light-color);
}

table th,
table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

table th {
    font-weight: 600;
    color: var(--dark-color);
}

table tr:hover {
    background: #f9fafb;
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.badge-pending {
    background: #fef3c7;
    color: #92400e;
}

.badge-served {
    background: #d1fae5;
    color: #065f46;
}

.badge-refunded {
    background: #fee2e2;
    color: #991b1b;
}

.search-filter {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.search-filter input,
.search-filter select {
    flex: 1;
    min-width: 200px;
}

.alert {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background: white;
    margin: 5% auto;
    padding: 30px;
    border-radius: 12px;
    max-width: 800px;
    max-height: 85vh;
    overflow-y: auto;
}

.close {
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: #9ca3af;
}

.close:hover {
    color: #374151;
}

.voucher-display {
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    background: white;
}

.voucher-header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 3px solid var(--primary-color);
}

.voucher-logo {
    max-width: 150px;
    max-height: 80px;
    margin-bottom: 15px;
}

.voucher-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 20px;
}

.voucher-field {
    padding: 12px;
    background: var(--light-color);
    border-radius: 8px;
}

.voucher-field label {
    display: block;
    font-size: 0.85rem;
    color: #6b7280;
    margin-bottom: 4px;
}

.voucher-field .value {
    font-weight: 600;
    color: var(--dark-color);
}

@media (max-width: 768px) {
    .form-grid,
    .voucher-grid {
        grid-template-columns: 1fr;
    }
    
    .phone-group {
        grid-template-columns: 100px 1fr;
    }
    
    .search-filter {
        flex-direction: column;
    }
    
    .header h1 {
        font-size: 1.8rem;
    }
}

@media print {
    .no-print {
        display: none !important;
    }
    
    .voucher-display {
        border: none;
        box-shadow: none;
    }
}