:root{--color-primary: #0077b6;--color-primary-dark: #005f8a;--color-primary-light: #00a8e8;--color-secondary: #023e8a;--color-white: #ffffff;--color-gray-50: #f8fafc;--color-gray-100: #f1f5f9;--color-gray-200: #e2e8f0;--color-gray-300: #cbd5e1;--color-gray-400: #94a3b8;--color-gray-500: #64748b;--color-gray-600: #475569;--color-gray-700: #334155;--color-gray-800: #1e293b;--color-gray-900: #0f172a;--color-success: #10b981;--color-warning: #f59e0b;--color-error: #ef4444;--sidebar-width: 260px;--sidebar-collapsed-width: 70px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:14px;line-height:1.5;color:var(--color-gray-800);background-color:var(--color-gray-100)}a{color:var(--color-primary);text-decoration:none}button{cursor:pointer;font-family:inherit}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 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#bfdbfe}.checkbox-label{display:flex;align-items:center;gap:8px;cursor:pointer}.checkbox-label input[type=checkbox]{width:18px;height:18px}.upload-btn{width:100%}.submit-btn{width:100%;padding:14px;font-size:16px}.image-preview{position:relative;margin-bottom:12px;border-radius:8px;overflow:hidden}.image-preview img{width:100%;height:150px;object-fit:cover;display:block}.image-preview .remove-image{position:absolute;top:8px;right:8px;width:28px;height:28px;border-radius:50%;background:#0009;color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}.image-preview .remove-image:hover{background:var(--color-error)}.loading-state{padding:60px 20px;text-align:center;color:var(--color-gray-500)}@media(max-width:1024px){.form-grid{grid-template-columns:1fr}}.data-table-page .page-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:24px}.card-header{display:flex;justify-content:space-between;align-items:center;gap:16px}.search-box{display:flex;align-items:center;gap:8px;background:var(--color-gray-100);padding:8px 12px;border-radius:8px;min-width:250px}.search-box input{border:none;background:none;outline:none;flex:1;font-size:14px}.search-box svg{color:var(--color-gray-400)}.action-buttons{display:flex;gap:8px}.action-btn{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:6px;background:var(--color-gray-100);color:var(--color-gray-600);border:none;cursor:pointer;transition:all .2s ease;text-decoration:none}.action-btn:hover{background:var(--color-gray-200);color:var(--color-gray-900)}.action-btn-danger:hover{background:var(--color-error);color:#fff}.action-btn:disabled{opacity:.5;cursor:not-allowed}.loading-state,.error-state,.empty-state{padding:60px 20px;text-align:center;color:var(--color-gray-500)}.error-state{color:var(--color-error)}.empty-state .btn{margin-top:16px}.pagination{display:flex;align-items:center;justify-content:center;gap:16px;padding:20px;border-top:1px solid var(--color-gray-200)}.page-info{color:var(--color-gray-600);font-size:14px}.btn-sm{padding:6px 12px;font-size:13px}.btn-sm svg{width:14px;height:14px}.contact-page{padding:1.5rem}.contact-layout{display:grid;grid-template-columns:350px 1fr;gap:1.5rem;margin-top:1.5rem;height:calc(100vh - 200px)}.message-list{background:var(--bg-secondary);border-radius:8px;overflow-y:auto;border:1px solid var(--border-color)}.message-item{padding:1rem;border-bottom:1px solid var(--border-color);cursor:pointer;transition:background .15s;position:relative}.message-item:hover{background:var(--bg-hover)}.message-item.active{background:var(--bg-hover);border-left:3px solid var(--primary)}.message-item.unread{background:#3b82f60d}.message-item.unread .message-name,.message-item.unread .message-subject{font-weight:600}.message-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.25rem}.message-name{font-size:.875rem;color:var(--text-primary)}.message-date{font-size:.75rem;color:var(--text-muted)}.message-subject{font-size:.875rem;color:var(--text-primary);margin-bottom:.25rem}.message-preview{font-size:.75rem;color:var(--text-muted);line-height:1.4}.message-actions{position:absolute;top:.5rem;right:.5rem;opacity:0;transition:opacity .15s}.message-item:hover .message-actions{opacity:1}.icon-btn{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:4px;padding:.25rem;cursor:pointer;color:var(--text-muted)}.icon-btn:hover{color:var(--error);border-color:var(--error)}.message-detail{background:var(--bg-secondary);border-radius:8px;border:1px solid var(--border-color);padding:1.5rem;display:flex;flex-direction:column}.detail-header{border-bottom:1px solid 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