body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",sans-serif;background:#f5f7fb;color:#1f2937}nav{display:flex;gap:16px;background:#0f766e;padding:14px 24px}nav a{color:white;text-decoration:none;font-weight:700}main{padding:24px;max-width:1200px;margin:auto}.login{display:grid;place-items:center;min-height:100vh}.login-card,.cards section,article,dialog{background:white;border-radius:12px;box-shadow:0 4px 18px #0001;padding:20px}.login-card{width:360px}label{display:block;margin:12px 0}input,select,textarea,button{padding:10px;border:1px solid #cbd5e1;border-radius:8px;margin:4px}button{background:#0f766e;color:white;cursor:pointer}.alert{background:#fee2e2;color:#991b1b;padding:10px;border-radius:8px}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px}.grid img,.device img{width:100%;height:140px;object-fit:cover;border-radius:8px}.device{display:grid;grid-template-columns:160px 1fr;gap:12px;margin:12px 0}.filters{display:flex;flex-wrap:wrap;align-items:center;margin-bottom:16px}#preview img{max-width:85vw;max-height:80vh}.row{margin:8px 0}