body{margin:0;font:14px/1.4 system-ui,sans-serif;color:#1a1a1a;background:#fafafa}header{display:flex;gap:1rem;align-items:center;padding:.75rem 1.5rem;background:#1f2937;color:#fff}header button{margin-left:auto}nav{display:flex;gap:1rem;padding:.5rem 1.5rem;border-bottom:1px solid #ddd;background:#fff}nav a{color:#374151;text-decoration:none}nav a.on{font-weight:600;text-decoration:underline}main{padding:1rem 1.5rem}main.login{text-align:center;padding-top:20vh}table{border-collapse:collapse;width:100%;background:#fff;margin-bottom:1rem}th,td{border:1px solid #e5e7eb;padding:.3rem .5rem;text-align:left;vertical-align:top}th{background:#f3f4f6}.error{color:#b91c1c}