.error-message{display:none;background-color:#fee2e2;border:1px solid #fecaca;color:#dc2626;padding:.75rem;border-radius:var(--radius-md);margin-top:1rem;font-size:.9rem}.dark .error-message{background-color:#450a0a;border-color:#7f1d1d;color:#ef4444}.app-container{min-height:calc(100vh - 200px);padding:2rem 0}.app-header .app-icon{font-size:4rem;display:block;margin-bottom:1rem}.control-group{display:flex;flex-direction:column}.control-group label{font-weight:500;margin-bottom:.5rem;color:var(--text-primary)}.results-grid{display:grid;gap:1rem}.result-item{display:flex;justify-content:space-between;align-items:center;padding:1rem;background:var(--bg-secondary);border-radius:var(--radius-md);border:1px solid var(--border-color)}.result-label{font-weight:500;color:var(--text-secondary)}.result-value{font-weight:600;color:var(--primary-color);font-size:1.1rem;font-family:'Courier New',monospace}.reference-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.reference-item{text-align:center;padding:1rem}.reference-item h4{margin-bottom:.5rem;color:var(--text-primary)}.reference-temps{display:flex;flex-direction:column;gap:.25rem}.reference-temps span{font-family:'Courier New',monospace;color:var(--text-secondary);font-size:.9rem}@media (max-width:768px){.grid-2{grid-template-columns:1fr}.reference-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:480px){.reference-grid{grid-template-columns:1fr}}