:root{--primary:#1e3a8a;--primary-hover:#1e40af;--secondary:#64748b;--background:#f8fafc;--card:#fff;--text:#0f172a;--text-muted:#64748b;--border:#e2e8f0;--success:#10b981;--accent:#3b82f6}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--background);color:var(--text);font-family:Inter,sans-serif;line-height:1.5}.container{max-width:800px;margin:0 auto;padding:2rem 1rem}header{text-align:center;margin-bottom:3rem}.logo{color:var(--primary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.5rem;font-size:1.5rem;font-weight:700}.logo-img{max-width:400px;max-height:200px;margin-bottom:1rem}h1{margin-bottom:.5rem;font-size:2.25rem;font-weight:800}.subtitle{color:var(--text-muted)}footer{border-top:1px solid var(--border);text-align:center;margin-top:4rem;padding-top:2rem}.footer-links{justify-content:center;gap:2rem;margin-bottom:1rem;display:flex}.footer-links a{color:var(--text-muted);font-size:.875rem;text-decoration:none;transition:color .2s}.footer-links a:hover{color:var(--primary)}.copyright{color:var(--text-muted);font-size:.75rem}.search-card{background:var(--card);border-radius:1rem;margin-bottom:2rem;padding:2rem;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -2px #0000001a}.search-form{gap:1rem;display:flex}input{border:1px solid var(--border);border-radius:.5rem;flex:1;padding:.75rem 1rem;font-size:1rem;transition:border-color .2s}input:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px #3b82f61a}button{background-color:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:.5rem;padding:.75rem 1.5rem;font-weight:600;transition:background-color .2s}button:hover{background-color:var(--primary-hover)}button:disabled{opacity:.7;cursor:not-allowed}.results-card{background:var(--card);border-radius:1rem;animation:.3s ease-out slideUp;overflow:hidden;box-shadow:0 4px 6px -1px #0000001a}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.status-header{background:var(--primary);color:#fff;justify-content:space-between;align-items:center;padding:1.5rem 2rem;display:flex}.status-badge{background:#fff3;border-radius:9999px;padding:.25rem .75rem;font-size:.875rem;font-weight:600}.details-grid{border-bottom:1px solid var(--border);grid-template-columns:1fr 1fr;gap:2rem;padding:2rem;display:grid}@media (width<=640px){.details-grid{grid-template-columns:1fr}.search-form{flex-direction:column}}.detail-item label{color:var(--text-muted);text-transform:uppercase;margin-bottom:.25rem;font-size:.75rem;font-weight:600;display:block}.detail-item p{font-weight:500}.tracking-stepper{padding:2rem}.step{gap:1rem;margin-bottom:1.5rem;display:flex;position:relative}.step:not(:last-child):after{content:"";background-color:var(--border);width:2px;position:absolute;top:24px;bottom:-16px;left:11px}.step.active:not(:last-child):after{background-color:var(--success)}.step-icon{background:var(--border);z-index:1;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;display:flex}.step.active .step-icon{background:var(--success);color:#fff}.step-content h3{font-size:.875rem;font-weight:600}.step-content p{color:var(--text-muted);font-size:.875rem}.error-message{color:#ef4444;text-align:center;background:#fef2f2;border-radius:.5rem;margin-bottom:1rem;padding:1rem}.loading-spinner{border:2px solid #ffffff4d;border-top-color:#fff;border-radius:50%;width:1rem;height:1rem;margin-right:.5rem;animation:1s ease-in-out infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}