:root{--primary-color: #2c5f4d;--secondary-color: #4CAF50;--danger-color: #f44336;--border-color: #ddd;--text-dark: #333;--text-light: #666;--bg-light: #f9f9f9}*{box-sizing:border-box}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--bg-light);color:var(--text-dark)}.app{display:flex;flex-direction:column;min-height:100vh}.app-tracker-only{width:100%;min-height:100vh}.app-header{background-color:var(--primary-color);color:#fff;padding:24px;box-shadow:0 2px 4px #0000001a}.header-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.app-header h1{margin:0;font-size:28px}.user-info{display:flex;gap:16px;align-items:center;font-size:14px}.logout-button{background:#fff3;color:#fff;border:1px solid rgba(255,255,255,.3);padding:6px 12px;cursor:pointer;border-radius:4px;font-size:12px;font-weight:600;transition:all .2s ease}.logout-button:hover{background:#ffffff4d}.app-nav{display:flex;gap:12px}.app-nav-tracker-only{flex-wrap:wrap;gap:10px}.nav-button{background:#fff3;color:#fff;border:2px solid transparent;padding:8px 16px;cursor:pointer;border-radius:4px;font-size:14px;transition:all .2s ease}.nav-button:hover{background:#ffffff4d}.nav-button.active{background:var(--secondary-color);border-color:#fff}.app-main{flex:1;padding:24px;max-width:1200px;margin:0 auto;width:100%}.app-main-tracker-only{max-width:none;width:100%;margin:0;padding:12px 0 24px}.app-main-tracker-only .form-section{width:100%;max-width:none}.login-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background:linear-gradient(135deg,var(--primary-color) 0%,#1e4d3a 100%)}.login-form{background:#fff;padding:40px;border-radius:8px;box-shadow:0 4px 12px #0003;width:100%;max-width:400px}.login-form h1{text-align:center;color:var(--primary-color);margin:0 0 24px;font-size:24px}.login-form-group{margin-bottom:16px}.login-form-group label{display:block;margin-bottom:6px;font-weight:600;color:var(--text-dark);font-size:13px}.login-form-group input{width:100%;padding:10px;border:1px solid var(--border-color);border-radius:4px;font-size:14px;font-family:inherit}.login-form-group input:focus{outline:none;border-color:var(--secondary-color);box-shadow:0 0 0 3px #4caf501a}.login-button{width:100%;padding:10px;background-color:var(--secondary-color);color:#fff;border:none;border-radius:4px;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s ease;margin-top:8px}.login-button:hover{background-color:#45a049}.login-button:disabled{background-color:#ccc;cursor:not-allowed}.login-error{background-color:#f8d7da;color:#721c24;padding:12px 16px;border-radius:4px;margin-bottom:16px;border:1px solid #f5c6cb;font-size:13px}.demo-users{margin-top:24px;padding-top:16px;border-top:1px solid var(--border-color);font-size:12px;color:var(--text-light)}.demo-users h3{margin:0 0 8px;font-size:12px;color:var(--text-dark);font-weight:600}.demo-users p{margin:4px 0}.form-section{background:#fff;padding:24px;border-radius:8px;box-shadow:0 1px 3px #0000001a}.form-section h2{margin-top:0;margin-bottom:24px;color:var(--primary-color)}.form-section h3{margin-top:0;margin-bottom:16px;color:var(--text-dark);font-size:16px}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;font-weight:600;color:var(--text-dark)}.form-group input[type=text],.form-group input[type=email],.form-group input[type=tel],.form-group input[type=number],.form-group input[type=date],.form-group select,.form-group textarea{width:100%;padding:10px 12px;border:1px solid var(--border-color);border-radius:4px;font-size:14px;font-family:inherit}.form-group textarea{resize:vertical;min-height:100px}.form-group input[type=text]:focus,.form-group input[type=email]:focus,.form-group input[type=tel]:focus,.form-group input[type=number]:focus,.form-group input[type=date]:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #2c5f4d1a}.form-group input[type=checkbox]{margin-right:8px;cursor:pointer}.form-group.checkbox-group{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}.form-group.checkbox-group label{display:flex;align-items:center;margin-bottom:0;cursor:pointer}.form-group.checkbox-group input[type=checkbox]{width:18px;height:18px;cursor:pointer}.submit-button,.button{background-color:var(--primary-color);color:#fff;padding:12px 24px;border:none;border-radius:4px;font-size:16px;font-weight:600;cursor:pointer;transition:background-color .2s ease;margin-right:8px}.submit-button:hover,.button:hover{background-color:#1f4738}.button-secondary{background-color:var(--secondary-color)}.button-secondary:hover{background-color:#45a049}.button-danger{background-color:var(--danger-color)}.button-danger:hover{background-color:#da190b}.button:disabled{background-color:#ccc;cursor:not-allowed}.multi-column-form{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}.form-column{display:flex;flex-direction:column}.form-column .form-group:last-child{margin-bottom:0}.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px}.form-row .form-group{margin-bottom:0}.section-title{font-size:18px;font-weight:600;margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--border-color);color:var(--primary-color)}.info-box{background-color:#f0f8ff;border-left:4px solid #2196f3;padding:12px 16px;margin-bottom:16px;border-radius:4px}.warning-box{background-color:#fff3cd;border-left:4px solid #ffc107;padding:12px 16px;margin-bottom:16px;border-radius:4px}.error-box{background-color:#f8d7da;border-left:4px solid #dc3545;padding:12px 16px;margin-bottom:16px;border-radius:4px}.success-box{background-color:#d4edda;border-left:4px solid #28a745;padding:12px 16px;margin-bottom:16px;border-radius:4px}.sample-row{background:#fff;border:1px solid var(--border-color);padding:16px;margin-bottom:12px;border-radius:4px;position:relative}.sample-row-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.sample-row-title{font-weight:600;color:var(--text-dark);margin:0}.requested-tests-grid{display:grid;gap:16px}.requested-tests-category{border:1px solid var(--border-color);border-radius:6px;padding:16px;background:#fafafa}.requested-tests-category h4{margin:0 0 12px;color:var(--text-dark);font-size:14px}.requested-tests-category .checkbox-group{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px 16px}.requested-tests-category .checkbox-item{display:flex;align-items:flex-start;gap:10px}.requested-tests-category .checkbox-item input[type=checkbox]{margin:2px 0 0;flex-shrink:0}.requested-tests-category .checkbox-item label{margin-bottom:0;font-weight:400;line-height:1.4;cursor:pointer}.success-message{background-color:#d4edda;color:#155724;padding:12px 16px;border-radius:4px;margin-bottom:16px;border:1px solid #c3e6cb}.error-message{background-color:#f8d7da;color:#721c24;padding:12px 16px;border-radius:4px;margin-bottom:16px;border:1px solid #f5c6cb}.qr-code-display{display:flex;flex-direction:column;align-items:center;gap:12px;padding:16px;background:#fff;border:1px dashed var(--border-color);border-radius:4px;margin-top:16px}.qr-code-display img{width:200px;height:200px;border:2px solid var(--border-color);padding:8px;background:#fff}.qr-code-display p{margin:0;font-size:12px;color:var(--text-light);text-align:center}.sample-list{display:flex;flex-direction:column;gap:12px}.sample-card{background:#fff;border:1px solid var(--border-color);padding:16px;border-radius:4px;display:grid;grid-template-columns:1fr auto;gap:16px;align-items:start}.sample-card-info{display:grid;grid-template-columns:1fr 1fr;gap:16px}.sample-card-field{display:flex;flex-direction:column}.sample-card-field strong{color:var(--text-light);font-size:12px;margin-bottom:4px}.sample-card-field span{color:var(--text-dark);font-size:14px}.status-badge{display:inline-block;padding:4px 12px;border-radius:12px;font-size:12px;font-weight:600}.status-badge.received{background-color:#e3f2fd;color:#1976d2}.status-badge.in_testing{background-color:#fff3e0;color:#f57c00}.status-badge.completed{background-color:#e8f5e9;color:#388e3c}.loading,.empty-state{text-align:center;padding:40px;color:var(--text-light)}.empty-state h3{color:var(--text-dark)}.profile-link{background:#fff3;color:#fff;border:1px solid rgba(255,255,255,.3);padding:6px 12px;cursor:pointer;border-radius:4px;font-size:12px;font-weight:600;transition:all .2s ease}.profile-link:hover{background:#ffffff4d}.responsive-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}.sample-detail-grid{display:grid;grid-template-columns:2fr 1fr;gap:20px}.sample-card-side{display:flex;flex-direction:column;gap:8px;min-width:220px;align-items:center}@media (max-width: 768px){.app-header{padding:16px}.header-top{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:12px}.app-header h1{font-size:20px}.user-info{flex-wrap:wrap;gap:8px;font-size:13px}.app-nav{flex-wrap:wrap;gap:8px}.nav-button{flex:1;min-width:110px;text-align:center;padding:8px 12px}.app-main,.form-section{padding:16px}.login-form{padding:28px 24px}.sample-detail-grid{grid-template-columns:1fr}.sample-card-side{min-width:unset;width:100%;flex-direction:row;flex-wrap:wrap;justify-content:center}}@media (max-width: 480px){.app-header{padding:12px}.app-header h1{font-size:17px}.user-info span{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:120px}.nav-button{font-size:13px;padding:8px 10px;min-width:unset;flex:1}.app-main{padding:12px}.login-container{align-items:flex-start;padding:24px 12px}.login-form{padding:20px 16px;border-radius:4px;margin:0}.form-section{padding:12px;border-radius:4px}.sample-card,.sample-card-info,.responsive-grid-2,.multi-column-form,.form-row{grid-template-columns:1fr}.form-group.checkbox-group{grid-template-columns:1fr 1fr}.requested-tests-category{padding:12px}.requested-tests-category .checkbox-group{grid-template-columns:1fr;gap:10px}.submit-button,.button{width:100%;margin-right:0;margin-bottom:8px;box-sizing:border-box}.qr-code-display img{max-width:100%;width:160px;height:160px}.app-main img{max-width:100%}}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial}