:root{--bg:#0f1419;--card:#1a2332;--text:#e7ecf3;--muted:#8b9cb3;--pass:#3dd68c;--warn:#f5c542;--fail:#f87171;--accent:#5b9fd4}*{box-sizing:border-box}body{margin:0;font-family:system-ui,sans-serif;background:var(--bg);color:var(--text)}.header{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.5rem;border-bottom:1px solid #2a3544}.header nav a{color:var(--muted);margin-left:1rem;text-decoration:none}.header nav a:hover{color:var(--accent)}.main{padding:1.5rem;max-width:1100px;margin:0 auto}.card{background:var(--card);border-radius:8px;padding:1.25rem;margin-bottom:1rem}.btn{background:var(--accent);color:#fff;border:none;padding:.5rem 1rem;border-radius:6px;cursor:pointer}.btn:disabled{opacity:.5}input{width:100%;padding:.5rem;margin:.25rem 0 .75rem;border-radius:6px;border:1px solid #2a3544;background:#0f1419;color:var(--text)}.status-pass{color:var(--pass)}.status-warn{color:var(--warn)}.status-fail{color:var(--fail)}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));grid-gap:1rem;gap:1rem}