/* Hydvance brand guide v1.0 (Dec 2025), as applied in LH2TankSizing:
   deep-teal side panel, light working area, mint accent, Saira + Montserrat. */
:root{
  --absolute-zero:#132326; --cold-matter:#043a43; --hydrogen:#29e0a6; --energy:#5e70eb; --frost:#dae7e8; --mist:#f4f4f2;
  --bg:#eef2f2; --surface:#ffffff; --surface-2:#f4f4f2; --line:#dae7e8; --fg:#132326; --fg-soft:#3f5559;
  --danger:#c0392b; --danger-bg:#c0392b14; --warn:#e8a33d; --warn-bg:#e8a33d22; --ok:#1f9e76; --ok-bg:#29e0a622;
  --r-none:#8a9799; --r-reader:#5c6769; --r-editor:#5e70eb; --r-expert:#1f9e76; --r-admin:#043a43;
  --heading:'Saira Semi Condensed','Arial Narrow',sans-serif;
  --body:'Montserrat','Helvetica Neue',Arial,sans-serif;
  --mono:ui-monospace,'Cascadia Mono',Consolas,monospace;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%}
body{background:var(--bg);color:var(--fg);font-family:var(--body);font-size:14px;line-height:1.5}
h1,h2,h3{font-family:var(--heading);font-weight:600;margin:0;letter-spacing:.01em;text-wrap:balance}
a{color:var(--cold-matter)}
button,input,select{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:2px solid var(--energy);outline-offset:2px}
[hidden]{display:none!important}

.app{display:grid;grid-template-columns:240px minmax(0,1fr);min-height:100vh}
.side{background:var(--cold-matter);color:var(--mist);display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.side .logo{height:76px;display:flex;align-items:center;justify-content:center;border-bottom:1px solid #29e0a655;box-shadow:0 4px 10px -6px #0008}
.side .logo img{width:152px}
.side nav{display:flex;flex-direction:column;gap:2px;padding:14px 10px}
.side .sec{font-family:var(--heading);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--hydrogen);padding:12px 10px 4px}
.side nav a{color:var(--mist);text-decoration:none;padding:7px 10px;border-radius:6px;font-size:.88rem;opacity:.85}
.side nav a:hover{background:#ffffff12;opacity:1}
.side nav a.on{background:#29e0a61f;opacity:1;box-shadow:inset 3px 0 0 var(--hydrogen)}
.side .me{margin-top:auto;padding:14px 16px;border-top:1px solid #29e0a655;font-size:.8rem;display:flex;flex-direction:column;gap:4px}
.side .me small{opacity:.7}
.side .me form{margin:0}
.side .me button{background:none;border:0;color:var(--hydrogen);padding:0;cursor:pointer;font-size:.8rem}
.side .me a{color:var(--hydrogen)}
.main{padding:24px 28px 40px;display:flex;flex-direction:column;gap:16px;min-width:0;max-width:1280px}
.confid{color:var(--danger);font-weight:700;font-size:.78rem;letter-spacing:.04em}
.devbar{background:var(--warn);color:var(--absolute-zero);font-weight:700;font-size:.75rem;text-align:center;padding:3px}
.head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px}
.head h1{font-size:1.75rem}
.head p{margin:2px 0 0;color:var(--fg-soft);font-size:.88rem}
.title2{font-family:var(--heading);font-weight:700;font-size:1.02rem;border-bottom:1px solid var(--line);padding-bottom:4px}
.note{font-size:.8rem;color:var(--fg-soft)}
.row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.row form{margin:0}

.btn{display:inline-block;text-decoration:none;color:var(--fg);border:1px solid var(--hydrogen);background:transparent;border-radius:6px;padding:7px 14px;cursor:pointer;font-weight:600;font-size:.84rem;transition:background-color .15s,border-color .15s}
.btn:hover{border-color:var(--cold-matter)}
.btn.primary{background:var(--hydrogen);color:var(--cold-matter)}
.btn.ghost{border-color:var(--line);background:var(--surface)}
.btn.danger{border-color:var(--danger);color:var(--danger)}
.btn.sm{padding:4px 9px;font-size:.76rem;font-weight:500}

.flash{border-radius:6px;padding:9px 12px;font-size:.85rem;font-weight:600;border:1px solid}
.flash.ok{background:var(--ok-bg);border-color:var(--ok)}
.flash.warn{background:var(--warn-bg);border-color:var(--warn)}
.flash.bad{background:var(--danger-bg);border-color:var(--danger);color:var(--danger)}

.role{display:inline-flex;align-items:center;gap:6px;font-size:.72rem;font-weight:700;padding:2px 9px;border-radius:999px;white-space:nowrap;border:1px solid currentColor}
.role::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.role.none{color:var(--r-none);border-style:dashed}
.role.reader{color:var(--r-reader)} .role.editor{color:var(--r-editor)} .role.expert{color:var(--r-expert)} .role.admin{color:var(--r-admin)}
.pill{font-size:.72rem;font-weight:600;padding:2px 8px;border-radius:999px;white-space:nowrap;display:inline-block}
.pill.ok{background:var(--ok-bg);color:var(--ok)} .pill.warn{background:var(--warn-bg);color:var(--fg)} .pill.bad{background:var(--danger-bg);color:var(--danger)}

.field{display:flex;flex-direction:column;gap:4px;min-width:0}
.field label{font-size:.78rem;font-weight:600;color:var(--fg-soft)}
.field input,.field select{border:1px solid var(--line);background:var(--surface);border-radius:6px;padding:9px 11px;min-width:0}
.check{display:flex;gap:8px;align-items:center;font-size:.82rem}
.otp{font-family:var(--mono);font-size:1.4rem;letter-spacing:.4em;text-align:center}
form.stack{display:flex;flex-direction:column;gap:12px}
.inline-form{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end}
.inline-form .field{flex:1 1 200px}

.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.card{border:1px solid var(--line);border-radius:8px;background:var(--surface);padding:16px;display:flex;flex-direction:column;gap:10px;min-width:0}
.card .top{display:flex;justify-content:space-between;align-items:flex-start;gap:8px}
.card h3{font-size:1.18rem}
.card p{margin:0;font-size:.82rem;color:var(--fg-soft)}
.card .meta{font-family:var(--mono);font-size:.72rem;color:var(--fg-soft);display:flex;gap:10px;flex-wrap:wrap}
.card .btn{margin-top:auto;text-align:center}
.glyph{width:40px;height:40px;border-radius:8px;background:var(--cold-matter);display:grid;place-items:center;flex:none}
.glyph svg{width:24px;height:24px}
.empty{border:1px dashed var(--line);border-radius:8px;padding:16px;font-size:.82rem;color:var(--fg-soft)}

.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:8px;background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:.83rem;font-variant-numeric:tabular-nums}
th{font-family:var(--heading);font-weight:600;font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;text-align:left;color:var(--fg-soft);background:var(--surface-2);padding:9px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:9px 12px;border-bottom:1px solid var(--line);vertical-align:middle}
tr:last-child td{border-bottom:0}
td .who{display:flex;flex-direction:column}
td .who small{color:var(--fg-soft)}
.mono{font-family:var(--mono);font-size:.76rem}
.matrix select{border:1px solid var(--line);border-radius:999px;padding:3px 8px;font-size:.76rem;font-weight:700;background:var(--surface);cursor:pointer}
.matrix select[data-r="none"]{color:var(--r-none)} .matrix select[data-r="reader"]{color:var(--r-reader)} .matrix select[data-r="editor"]{color:var(--r-editor)} .matrix select[data-r="expert"]{color:var(--r-expert)} .matrix select[data-r="admin"]{color:var(--r-admin)}
.matrix td.changed{background:var(--warn-bg)}
.bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;border:1px solid var(--warn);background:var(--warn-bg);border-radius:6px;padding:9px 12px;font-size:.84rem;font-weight:600}

.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:16px}
.panel{border:1px solid var(--line);border-radius:8px;padding:16px;display:flex;flex-direction:column;gap:12px;background:var(--surface);min-width:0}
.panel.alert{border-color:var(--danger)}
.kv{display:grid;grid-template-columns:auto minmax(0,1fr);gap:5px 14px;font-size:.82rem;margin:0}
.kv dt{color:var(--fg-soft)} .kv dd{margin:0;overflow-wrap:anywhere}
.legend{display:flex;flex-wrap:wrap;gap:8px;font-size:.76rem;color:var(--fg-soft);align-items:center}
.callout{border-left:4px solid var(--energy);background:#5e70eb12;padding:10px 12px;border-radius:4px;font-size:.82rem}
.codes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 18px;font-family:var(--mono);font-size:1rem;background:var(--surface-2);border:1px solid var(--line);border-radius:8px;padding:14px 18px}
details summary{cursor:pointer;font-weight:600;font-size:.84rem}

/* Sign-in pages */
.auth{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);min-height:100vh}
.auth .brand{background:var(--cold-matter);color:var(--mist);padding:48px;display:flex;flex-direction:column;justify-content:space-between;gap:24px}
.auth .brand img{width:200px}
.auth .brand h2{font-size:2.1rem;line-height:1.1;color:var(--mist)}
.auth .brand p{opacity:.8;max-width:36ch;margin:10px 0 0}
.auth .brand ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:6px;font-size:.82rem;opacity:.85}
.auth .brand li::before{content:"✓  ";color:var(--hydrogen);font-weight:700}
.auth .form{padding:48px 32px;display:flex;flex-direction:column;justify-content:center;gap:16px;max-width:440px;margin:0 auto;width:100%}
.auth .form h1{font-size:1.65rem}
.steps{display:flex;gap:6px}
.steps i{flex:1;height:3px;border-radius:2px;background:var(--line)}
.steps i.on{background:var(--hydrogen)}
.qr{display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.qr img{width:180px;height:180px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:6px}
.secret{font-family:var(--mono);font-size:.82rem;word-break:break-all;background:var(--surface-2);border:1px solid var(--line);border-radius:6px;padding:8px}

@media (max-width:860px){
  .app{grid-template-columns:1fr}
  .side{position:static;height:auto}
  .side .logo{height:60px}
  .side nav{flex-direction:row;flex-wrap:wrap;padding:8px}
  .side .sec{display:none}
  .side .me{flex-direction:row;flex-wrap:wrap;gap:10px;padding:8px 16px}
  .main{padding:16px}
  .auth{grid-template-columns:1fr}
  .auth .brand{padding:24px}
  .auth .brand ul{display:none}
  .auth .form{padding:24px 16px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}