:root{--primary: #6366f1;--primary-hover: #4f46e5;--danger: #ef4444;--success: #22c55e;--warning: #f59e0b;--gray-50: #f9fafb;--gray-100: #f3f4f6;--gray-200: #e5e7eb;--gray-300: #d1d5db;--gray-500: #6b7280;--gray-700: #374151;--gray-900: #111827;--radius: 8px;--shadow: 0 1px 3px rgba(0,0,0,.1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:14px;color:var(--gray-900);background:var(--gray-50)}a{color:inherit;text-decoration:none}.layout{display:flex;min-height:100vh}.sidebar{width:220px;background:#fff;border-right:1px solid var(--gray-200);display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0;z-index:10}.sidebar-logo{padding:20px 16px 16px;font-size:16px;font-weight:700;color:var(--primary);border-bottom:1px solid var(--gray-200)}.sidebar-logo span{font-weight:400;color:var(--gray-500);font-size:12px;display:block}.sidebar-nav{flex:1;padding:8px 0}.sidebar-nav a{display:flex;align-items:center;gap:10px;padding:10px 16px;color:var(--gray-700);font-size:14px;border-radius:0;transition:background .15s}.sidebar-nav a:hover,.sidebar-nav a.active{background:var(--gray-100);color:var(--primary)}.sidebar-user{padding:12px 16px;border-top:1px solid var(--gray-200);font-size:12px;color:var(--gray-500)}.sidebar-user strong{display:block;color:var(--gray-900);margin-bottom:2px}.sidebar-user button{margin-top:6px;font-size:12px;color:var(--danger);background:none;border:none;cursor:pointer;padding:0}.main{margin-left:220px;flex:1;padding:24px}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.page-header h1{font-size:22px;font-weight:700}.card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--gray-200);padding:16px;margin-bottom:16px}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:var(--radius);font-size:13px;font-weight:500;cursor:pointer;border:none;transition:background .15s,opacity .15s}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-hover)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover:not(:disabled){background:#dc2626}.btn-success{background:var(--success);color:#fff}.btn-success:hover:not(:disabled){background:#16a34a}.btn-secondary{background:var(--gray-100);color:var(--gray-700);border:1px solid var(--gray-200)}.btn-secondary:hover:not(:disabled){background:var(--gray-200)}.btn-sm{padding:4px 10px;font-size:12px}.btn-ghost{background:transparent;color:var(--gray-500);border:1px solid var(--gray-200)}.btn-ghost:hover{background:var(--gray-100)}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse}th{text-align:left;padding:10px 12px;font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--gray-500);border-bottom:1px solid var(--gray-200)}td{padding:10px 12px;border-bottom:1px solid var(--gray-100);vertical-align:middle}tr:last-child td{border-bottom:none}tr:hover td{background:var(--gray-50)}.badge{display:inline-block;padding:3px 8px;border-radius:12px;font-size:11px;font-weight:600;white-space:nowrap}.badge-new{background:#dbeafe;color:#1d4ed8}.badge-in_progress{background:#fef3c7;color:#92400e}.badge-resolved{background:#dcfce7;color:#166534}.badge-closed{background:var(--gray-100);color:var(--gray-500)}.badge-rejected{background:#fee2e2;color:#991b1b}.badge-low{background:var(--gray-100);color:var(--gray-500)}.badge-normal{background:#dbeafe;color:#1d4ed8}.badge-high{background:#fef3c7;color:#92400e}.badge-urgent{background:#fee2e2;color:#991b1b}.form-group{margin-bottom:14px}.form-group label{display:block;font-size:12px;font-weight:600;color:var(--gray-700);margin-bottom:4px}.form-group input,.form-group select,.form-group textarea{width:100%;padding:8px 10px;border:1px solid var(--gray-300);border-radius:var(--radius);font-size:14px;font-family:inherit;color:var(--gray-900)}.form-group textarea{resize:vertical;min-height:80px}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #6366f126}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:center;justify-content:center;z-index:100;padding:16px}.modal{background:#fff;border-radius:12px;width:100%;max-width:560px;max-height:90vh;overflow-y:auto;padding:24px;box-shadow:0 20px 60px #00000040}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.modal-header h2{font-size:18px;font-weight:700}.modal-close{background:none;border:none;font-size:20px;cursor:pointer;color:var(--gray-500);padding:4px}.modal-footer{display:flex;gap:8px;justify-content:flex-end;margin-top:20px;padding-top:16px;border-top:1px solid var(--gray-200)}.error-msg{color:var(--danger);font-size:13px;margin-top:8px}.empty-state{text-align:center;padding:48px 16px;color:var(--gray-500)}.empty-state .icon{font-size:40px;margin-bottom:12px}.spinner{display:inline-block;width:14px;height:14px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.filters{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.filters input,.filters select{padding:7px 10px;border:1px solid var(--gray-300);border-radius:var(--radius);font-size:13px}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:16px}.stat-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius);padding:16px;text-align:center}.stat-card .val{font-size:28px;font-weight:700;color:var(--primary)}.stat-card .lbl{font-size:12px;color:var(--gray-500);margin-top:4px}.priority-dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:4px}.priority-dot.low{background:var(--gray-300)}.priority-dot.normal{background:#60a5fa}.priority-dot.high{background:var(--warning)}.priority-dot.urgent{background:var(--danger)}.tab-bar{display:flex;border-bottom:1px solid var(--gray-200);margin-bottom:16px}.tab-bar button{background:none;border:none;padding:10px 16px;font-size:14px;cursor:pointer;color:var(--gray-500);border-bottom:2px solid transparent;margin-bottom:-1px}.tab-bar button.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}.color-dot{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:6px}.timeline{padding-left:0;list-style:none}.timeline li{display:flex;gap:12px;padding:8px 0;border-bottom:1px solid var(--gray-100);font-size:13px}.timeline li:last-child{border-bottom:none}.timeline .time{color:var(--gray-500);white-space:nowrap;min-width:120px}.timeline .actor{font-weight:600}