:root { --bg:#1f1f1f; --card:#2a2a28; --line:#555; --text:#eee; --muted:#9a9a9a;
          --ok:#1f9d3a; --warn:#e0a800; --bad:#e02020; }
  * { box-sizing: border-box; }
  body { margin:0; background:var(--bg); color:var(--text); font:14px/1.4 system-ui,sans-serif; }
  header { display:flex; flex-wrap:wrap; gap:12px; align-items:center; padding:12px 16px; background:#161a26; }
  header h1 { font-size:16px; margin:0 auto 0 0; }
  .totals span { margin-left:14px; }
  main { padding:16px; display:grid; gap:14px; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); align-items:start; }
  .card { background:var(--card); border:1px solid var(--line); border-radius:6px; padding:12px; cursor:pointer; }
  .card h2 { font-size:15px; margin:0 0 6px; text-align:center; }
  .dot { display:inline-block; width:12px; height:12px; border-radius:50%; margin:0 4px -1px 10px; }
  .ok { background:var(--ok); } .warn { background:var(--warn); } .offline { background:var(--bad); }
  .counts { text-align:center; }
  .tanks { display:none; margin-top:10px; border-top:1px solid var(--line); padding-top:8px; }
  .card.open .tanks { display:block; }
  .tank { display:grid; grid-template-columns:14px 1fr auto; gap:8px; padding:4px 0; align-items:center; }
  .tank small { color:var(--muted); display:block; }
  .bar { height:4px; background:#444; border-radius:2px; margin-top:3px; }
  .bar i { display:block; height:100%; background:#4a90d9; border-radius:2px; }
  #banner { display:none; margin:12px 16px 0; padding:8px 12px; background:#5a1b1b; border-radius:6px; }
  footer { padding:12px 16px; color:var(--muted); }
  footer .dot { margin-left:0; margin-right:6px; }
  .bar-user { display:flex; gap:10px; align-items:center; }
  a, .linkbtn { color:#8ab4f8; text-decoration:none; cursor:pointer; background:none; border:0; font:inherit; padding:0; }
  a:hover, .linkbtn:hover { text-decoration:underline; }
  input, select, button.btn { background:#1b1b1b; color:var(--text); border:1px solid var(--line); border-radius:4px; padding:7px 9px; font:inherit; }
  button.btn { background:#2f5fb3; border-color:#2f5fb3; cursor:pointer; }
  button.danger { background:#8a2222; border-color:#8a2222; }
  .panel { max-width:760px; margin:20px auto; padding:16px; background:var(--card); border:1px solid var(--line); border-radius:6px; }
  .panel h2 { margin:0 0 12px; font-size:16px; }
  .login { max-width:320px; margin:12vh auto 0; }
  .login form, .row-form { display:grid; gap:10px; }
  .row-form { grid-template-columns:1fr 1fr 130px auto; align-items:center; }
  table { width:100%; border-collapse:collapse; }
  td, th { text-align:left; padding:8px 6px; border-bottom:1px solid var(--line); }
  td.act { text-align:right; white-space:nowrap; }
  td.act > * { margin-left:8px; }
  .err { color:#ff8080; min-height:1.3em; }
  @media (max-width:640px) { .row-form { grid-template-columns:1fr; } }
  .muted { color:var(--muted); }