:root{
  --navy:#092443; --navy-d:#061a33; --bg:#f4f6f9; --card:#fff; --line:#d8dee6;
  --ok:#1e7e34; --ok-bg:#e7f4ea; --warn:#9a6b00; --warn-bg:#fff3cd;
  --trip:#a3242c; --trip-bg:#f8d7da; --muted:#6b7480;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background:var(--bg);color:#1c2530;font-size:16px;line-height:1.4}
main{max-width:760px;margin:0 auto;padding:12px 12px 64px}
h1{font-size:1.25rem;margin:.2rem 0}
h2{font-size:1.02rem;margin:.6rem 0 .4rem}
.muted{color:var(--muted);font-size:.86rem;margin:.2rem 0}
a{color:var(--navy)}

.topbar{position:sticky;top:0;z-index:10;background:var(--navy);color:#fff;
  display:flex;justify-content:space-between;align-items:center;gap:8px;
  padding:5px 12px;flex-wrap:wrap;box-shadow:0 1px 3px rgba(0,0,0,.12)}
.topbar .brand{display:flex;align-items:center;gap:8px;color:#fff}
.brand-logo{height:22px;width:auto;display:block}
.brand-sub{font-weight:600;font-size:.9rem;color:#dce6f1;border-left:1px solid rgba(255,255,255,.35);padding-left:8px}
.logo-tile{background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:12px 16px;margin:0 auto 16px;width:max-content;max-width:100%}
.login-logo{display:block;height:40px;width:auto}
.topbar nav{display:flex;gap:14px;align-items:center}
.topbar nav a{color:#dce6f1;text-decoration:none;font-size:.9rem}
.inline{display:inline}
button.link{background:none;border:none;color:var(--navy);font-size:.9rem;cursor:pointer;padding:0}
.topbar button.link{color:#dce6f1}

.card{background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:14px;margin:12px 0;box-shadow:0 1px 2px rgba(0,0,0,.04)}
.login{max-width:380px;margin:8vh auto}
label{display:block;font-size:.85rem;color:var(--muted);margin:10px 0}
input,select,textarea{width:100%;font-size:16px;padding:11px;margin-top:4px;
  border:1px solid var(--line);border-radius:9px;background:#fff}
button{font-size:16px}
button.primary{background:var(--navy);color:#fff;border:none;border-radius:9px;
  padding:12px 16px;width:100%;margin-top:10px;cursor:pointer}
button.primary:active{background:var(--navy-d)}
.btn{display:inline-block;background:#fff;border:1px solid var(--line);border-radius:9px;
  padding:9px 13px;text-decoration:none;color:var(--navy)}

.sheet-head{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;flex-wrap:wrap}
.datenav{display:flex;gap:6px;align-items:center}
.datenav input[type=date]{width:auto}

.group{background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:6px 12px 12px;margin:12px 0}
.group h2{position:sticky;top:38px;background:var(--card);padding:8px 0;margin:0 0 4px;
  border-bottom:2px solid var(--navy);z-index:5}

.field{border-bottom:1px solid var(--line);padding:10px 0}
.field:last-child{border-bottom:none}
.field-head{display:flex;align-items:center;gap:8px}
.pno{font-weight:700;color:var(--navy);font-size:.8rem;min-width:26px}
.pname{flex:1;font-size:.95rem}
.field-meta{display:flex;gap:8px;flex-wrap:wrap;margin:2px 0 6px 34px;font-size:.78rem;color:var(--muted)}
.tag{font-family:ui-monospace,monospace}
.target{color:#3a3f46}
.field-input{display:flex;align-items:center;gap:8px;margin-left:34px}
.field-input .val{flex:1}
.field-input .unit{color:var(--muted);font-size:.85rem;min-width:36px}
.comment{display:none;margin:8px 0 0 34px;min-height:42px}
.comment.show{display:block}

.pill{font-size:.7rem;font-weight:700;padding:2px 8px;border-radius:20px;border:1px solid transparent}
.pill-none{color:var(--muted);border-color:var(--line)}
.pill-ok{color:var(--ok);background:var(--ok-bg)}
.pill-alarm,.pill-warn{color:var(--warn);background:var(--warn-bg)}
.pill-trip{color:var(--trip);background:var(--trip-bg)}
.field.sev-ok{background:linear-gradient(90deg,var(--ok-bg) 0 4px,transparent 4px)}
.field.sev-alarm,.field.sev-warn{background:linear-gradient(90deg,var(--warn-bg) 0 4px,transparent 4px)}
.field.sev-trip{background:linear-gradient(90deg,var(--trip-bg) 0 4px,transparent 4px)}

.alert{padding:10px 12px;border-radius:9px;margin:10px 0;font-size:.9rem}
.alert.error{background:var(--trip-bg);color:var(--trip)}
.alert.info{background:#e7eef6;color:var(--navy)}
details.instructions{margin:10px 0;font-size:.88rem}
.exportbar{display:flex;gap:8px;margin:16px 0;flex-wrap:wrap}
.signoff-sup{display:flex;gap:8px;align-items:flex-end;flex-wrap:wrap}
.signoff-sup label{flex:1;margin:0}

table.history{width:100%;border-collapse:collapse;font-size:.9rem;background:#fff;border-radius:10px;overflow:hidden}
table.history th,table.history td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line)}
table.history th{background:#eef2f7}
ul.plain{list-style:none;padding:0}ul.plain li{padding:4px 0}
.row{display:flex;gap:8px;align-items:flex-end}.row select{flex:1}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}
.grid2 button{grid-column:1/-1}

#offline-banner{position:fixed;bottom:0;left:0;right:0;background:var(--warn-bg);
  color:var(--warn);text-align:center;padding:8px;font-size:.85rem}
@media(max-width:480px){.grid2{grid-template-columns:1fr}}