/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Sarabun', sans-serif;
    background-color: #f8fafc;
    color: #2d3748;
    line-height: 1.6;
}

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

/* Header Styles */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.back-btn {
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 16px;
}

.back-btn:hover {
    background: rgba(255,255,255,0.3);
    transform: translateX(-2px);
}

.header h1 {
    font-size: 24px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.btn-primary {
    background: #4f46e5;
    color: white;
}

.btn-primary:hover {
    background: #4338ca;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

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

.btn-secondary:hover {
    background: #5b6471;
}

.btn-danger {
    background: #dc2626;
    color: white;
}

.btn-danger:hover {
    background: #b91c1c;
}

.btn-success {
    background: #059669;
    color: white;
}

.btn-success:hover {
    background: #047857;
}

.btn-warning {
    background: #d97706;
    color: white;
}

.btn-warning:hover {
    background: #b45309;
}

/* Search Section */
.search-section {
    background: white;
    padding: 20px 0;
    border-bottom: 1px solid #e5e7eb;
    margin-bottom: 20px;
}

.search-controls {
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex: 1;
    max-width: 400px;
}

.search-box i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #9ca3af;
}

.search-box input {
    width: 100%;
    padding: 12px 15px 12px 45px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.search-box input:focus {
    outline: none;
    border-color: #4f46e5;
}

.filter-group {
    display: flex;
    gap: 10px;
    align-items: center;
}

.filter-group select {
    padding: 10px 15px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 14px;
    background: white;
    cursor: pointer;
    transition: border-color 0.3s ease;
}

.filter-group select:focus {
    outline: none;
    border-color: #4f46e5;
}

/* Units Table */
.units-section {
    margin-bottom: 40px;
}

.table-container {
    background: white;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    overflow: hidden;
}

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

.units-table th {
    background: #f8fafc;
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: #374151;
    border-bottom: 2px solid #e5e7eb;
    font-size: 14px;
}

.units-table td {
    padding: 15px;
    border-bottom: 1px solid #f3f4f6;
    vertical-align: middle;
}

.units-table tr:hover {
    background-color: #f9fafb;
}

.units-table tr:last-child td {
    border-bottom: none;
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.status-active {
    background: #dcfce7;
    color: #166534;
}

.status-inactive {
    background: #fee2e2;
    color: #991b1b;
}

.default-badge {
    background: #fef3c7;
    color: #92400e;
    font-size: 12px;
    padding: 4px 8px;
    border-radius: 12px;
    font-weight: 500;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 5px;
}

.action-btn {
    padding: 6px 10px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 5px;
}

.edit-btn {
    background: #3b82f6;
    color: white;
}

.edit-btn:hover {
    background: #2563eb;
}

.delete-btn {
    background: #ef4444;
    color: white;
}

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

.default-btn {
    background: #f59e0b;
    color: white;
    padding: 6px 12px;
    font-size: 11px;
}

.default-btn:hover {
    background: #d97706;
}

.default-btn:disabled {
    background: #9ca3af;
    cursor: not-allowed;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: white;
    border-radius: 12px;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideIn 0.3s ease;
}

.modal-sm {
    max-width: 400px;
}

.modal-header {
    padding: 20px 25px;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: #374151;
}

.close-btn {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #9ca3af;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.close-btn:hover {
    background: #f3f4f6;
    color: #374151;
}

.modal-body {
    padding: 20px 25px;
}

.modal-footer {
    padding: 20px 25px;
    border-top: 1px solid #e5e7eb;
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

/* Form Styles */
#unitForm {
    padding: 25px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    margin-bottom: 8px;
    font-weight: 500;
    color: #374151;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 15px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #4f46e5;
}

.help-text {
    margin-top: 5px;
    font-size: 12px;
    color: #6b7280;
}

/* Checkbox Styles */
.checkbox-container {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: #374151;
    margin-top: 5px;
}

.checkbox-container input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    background: white;
    border: 2px solid #d1d5db;
    border-radius: 4px;
    position: relative;
    transition: all 0.3s ease;
}

.checkbox-container:hover .checkmark {
    border-color: #4f46e5;
}

.checkbox-container input[type="checkbox"]:checked + .checkmark {
    background: #4f46e5;
    border-color: #4f46e5;
}

.checkbox-container input[type="checkbox"]:checked + .checkmark::after {
    content: '\2713';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 14px;
    font-weight: bold;
}

.form-actions {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    padding-top: 20px;
    border-top: 1px solid #e5e7eb;
}

/* Delete Confirm Modal */
.delete-confirm,
.default-confirm {
    text-align: center;
    padding: 20px 0;
}

.delete-confirm i {
    font-size: 48px;
    color: #ef4444;
    margin-bottom: 15px;
}

.default-confirm i {
    font-size: 48px;
    color: #f59e0b;
    margin-bottom: 15px;
}

.delete-confirm p,
.default-confirm p {
    margin-bottom: 10px;
    color: #374151;
}

.delete-confirm .warning {
    font-size: 12px;
    color: #ef4444;
    font-weight: 500;
}

.default-confirm .info {
    font-size: 12px;
    color: #6b7280;
    font-style: italic;
}

/* Loading and No Data */
.loading,
.no-data {
    text-align: center;
    padding: 60px 20px;
    color: #9ca3af;
}

.loading i {
    font-size: 24px;
    margin-bottom: 10px;
}

.no-data i {
    font-size: 48px;
    margin-bottom: 15px;
}

.no-data p {
    font-size: 16px;
}

/* Toast Notification */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    min-width: 300px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    z-index: 1100;
    transform: translateX(400px);
    transition: transform 0.3s ease;
}

.toast.show {
    transform: translateX(0);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px 20px;
}

.toast-icon {
    font-size: 16px;
}

.toast-success .toast-icon {
    color: #059669;
}

.toast-error .toast-icon {
    color: #dc2626;
}

.toast-warning .toast-icon {
    color: #d97706;
}

.toast-info .toast-icon {
    color: #3b82f6;
}

.toast-message {
    flex: 1;
    font-size: 14px;
    color: #374151;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .header h1 {
        font-size: 20px;
    }
    
    .header h1 .btn-text {
        display: none;
    }
    
    .search-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        max-width: none;
    }
    
    .filter-group {
        justify-content: space-between;
    }
    
    .hide-mobile {
        display: none;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .modal-content {
        width: 95%;
        margin: 10px;
    }
    
    .modal-footer {
        flex-direction: column-reverse;
    }
    
    .form-actions {
        flex-direction: column-reverse;
    }
    
    .toast {
        left: 10px;
        right: 10px;
        min-width: auto;
        transform: translateY(-100px);
    }
    
    .toast.show {
        transform: translateY(0);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .header-left {
        gap: 10px;
    }
    
    .header h1 {
        font-size: 18px;
    }
    
    .units-table th,
    .units-table td {
        padding: 10px 8px;
        font-size: 13px;
    }
    
    .btn {
        padding: 8px 15px;
        font-size: 13px;
    }
    
    .action-btn {
        padding: 5px 8px;
        font-size: 11px;
    }
}

/* Print Styles */
@media print {
    .header-actions,
    .search-section,
    .modal,
    .toast {
        display: none !important;
    }
    
    .header {
        background: none !important;
        color: #000 !important;
        box-shadow: none !important;
    }
    
    .table-container {
        box-shadow: none !important;
    }
    
    .action-buttons {
        display: none !important;
    }
}