/* Voucher Cash Book System - Modern Mobile-First CSS */

:root {
    --primary: #667eea;
    --primary-dark: #5568d3;
    --secondary: #764ba2;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --light: #f8f9fa;
    --dark: #1f2937;
    --gray: #6b7280;
    --border: #e5e7eb;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f3f4f6;
    color: #1f2937;
    line-height: 1.6;
}

/* Navigation */
.navbar {
    background: white;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-menu {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.nav-link {
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: var(--gray);
    border-radius: 6px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.nav-link:hover {
    background: var(--light);
    color: var(--primary);
}

.nav-link.active {
    background: var(--primary);
    color: white;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 3px;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 18px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: all 0.3s;
}

/* Main Content */
.main-content {
    min-height: calc(100vh - 140px);
    padding: 2rem 1rem;
}

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

/* Cards */
.card {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.card-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-body {
    padding: 1.5rem;
}

/* Buttons */
.btn {
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

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

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

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

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

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

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--gray);
}

.btn-outline:hover {
    background: var(--light);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark);
}

.required {
    color: var(--danger);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.95rem;
    transition: all 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
}

/* Radio Group */
.radio-group {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.radio-label input[type="radio"] {
    cursor: pointer;
}

.radio-text {
    font-weight: 500;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

/* Badges */
.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

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

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

.badge-info {
    background: #dbeafe;
    color: #1e40af;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

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

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

.table th {
    font-weight: 600;
    color: var(--dark);
    font-size: 0.875rem;
    text-transform: uppercase;
}

.table tbody tr:hover {
    background: var(--light);
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 0.5rem;
}

.btn-icon {
    padding: 0.5rem;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--gray);
    border-radius: 4px;
    transition: all 0.2s;
    text-decoration: none;
}

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

.btn-icon.danger:hover {
    color: var(--danger);
    background: #fee2e2;
}

/* Summary Cards */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.summary-card {
    background: var(--light);
    padding: 1.25rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary);
}

.summary-card.success {
    border-left-color: var(--success);
}

.summary-card.danger {
    border-left-color: var(--danger);
}

.summary-card.info {
    border-left-color: var(--info);
}

.summary-card.warning {
    border-left-color: var(--warning);
}

.summary-label {
    font-size: 0.875rem;
    color: var(--gray);
    margin-bottom: 0.5rem;
}

.summary-value {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.page-info {
    color: var(--gray);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--gray);
}

.empty-state i {
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Voucher Page Specific */
.voucher-header {
    text-align: center;
    padding: 1.5rem;
    background: var(--light);
    border-radius: 8px;
}

.voucher-header h3 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.voucher-header h4 {
    font-size: 1.25rem;
    color: var(--primary);
    font-weight: 600;
}

.form-section {
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
}

.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--dark);
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

/* Categories Page */
.categories-grid {
    display: grid;
    gap: 1.5rem;
}

.category-section {
    background: var(--light);
    padding: 1.5rem;
    border-radius: 8px;
}

.category-type-header {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.category-list {
    display: grid;
    gap: 0.75rem;
}

.category-item {
    background: white;
    padding: 1rem;
    border-radius: 6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid var(--border);
}

.category-info {
    flex: 1;
}

.category-info strong {
    display: block;
    margin-bottom: 0.25rem;
}

.category-info small {
    display: block;
    margin-top: 0.25rem;
}

.category-actions {
    display: flex;
    gap: 0.5rem;
}

/* Input Group */
.input-group {
    display: flex;
    gap: 0.5rem;
}

.input-group .form-control {
    flex: 1;
}

/* Text Utilities */
.text-center {
    text-align: center;
}

.text-success {
    color: var(--success);
}

.text-danger {
    color: var(--danger);
}

.text-info {
    color: var(--info);
}

.text-muted {
    color: var(--gray);
}

.text-primary {
    color: var(--primary);
}

.mb-3 {
    margin-bottom: 1rem;
}

.mb-4 {
    margin-bottom: 1.5rem;
}

/* Footer */
.footer {
    background: white;
    border-top: 1px solid var(--border);
    padding: 1.5rem;
    text-align: center;
    color: var(--gray);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow-lg);
        display: none;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .summary-cards {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions .btn {
        width: 100%;
    }
    
    .card-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .table {
        font-size: 0.875rem;
    }
    
    .table th,
    .table td {
        padding: 0.75rem 0.5rem;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .footer,
    .form-actions,
    .action-buttons {
        display: none;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #000;
    }
}