:root{
  --ground:#FBFCFD; --ink:#12161C; --muted:#5B6673; --panel:#F1F4F7; --surface:#FFFFFF;
  --line:#DFE4EA; --teal:#0E7C7B; --teal-ink:#0A5E5D; --teal-wash:#E4F1F0;
  --green:#1F9254; --green-w:#E4F3EA; --amber:#B7791F; --amber-w:#FBEFD6;
  --red:#C0362C; --red-w:#FBE4E1; --grey:#6B7480; --grey-w:#ECEFF2;
  --sans:"IBM Plex Sans",system-ui,sans-serif; --mono:"IBM Plex Mono",ui-monospace,monospace;
  --r:8px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;display:grid;grid-template-columns:236px 1fr;min-height:100vh;background:var(--ground);color:var(--ink);font:15px/1.5 var(--sans);letter-spacing:-.005em}
.mono{font-family:var(--mono);font-feature-settings:"tnum" 1}
.muted{color:var(--muted)}
a{color:var(--teal-ink);text-decoration:none}a:hover{text-decoration:underline}

/* rail */
.rail{position:sticky;top:0;height:100vh;background:var(--ink);color:#C3CBD4;display:flex;flex-direction:column;padding:22px 14px}
.brand{display:flex;align-items:center;gap:10px;padding:6px 8px 22px}
.brand-mark{font-family:var(--mono);font-weight:600;font-size:13px;background:var(--teal);color:#fff;padding:4px 7px;border-radius:6px;letter-spacing:.02em}
.brand-name{font-weight:600;color:#fff;font-size:16px}
.rail nav{display:flex;flex-direction:column;gap:2px}
.rail nav a{color:#AEB8C2;padding:9px 12px;border-radius:7px;font-weight:500}
.rail nav a:hover{background:#1D2530;color:#fff;text-decoration:none}
.rail nav a.on{background:var(--teal);color:#fff}
.rail-foot{margin-top:auto;font-size:12px;color:#6B7683;padding:8px;line-height:1.4}

main{padding:34px 40px 60px;max-width:1180px}
.ph{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;border-bottom:1px solid var(--line);padding-bottom:18px}
.ph h1{margin:0;font-size:26px;font-weight:600;letter-spacing:-.02em}
.ph .sub{margin:6px 0 0;color:var(--muted);max-width:64ch;font-size:14px}

/* stats — the dashboard hero */
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin-bottom:26px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px 16px;display:flex;flex-direction:column;gap:3px}
.stat:hover{border-color:#C4CCD4;text-decoration:none}
.stat-n{font-family:var(--mono);font-size:30px;font-weight:600;letter-spacing:-.03em;line-height:1}
.stat-l{font-size:13px;color:var(--muted)}
.stat.s-available{border-top:3px solid var(--green)} .stat.s-available .stat-n{color:var(--green)}
.stat.s-assigned{border-top:3px solid var(--teal)} .stat.s-assigned .stat-n{color:var(--teal-ink)}
.stat.s-leaver{border-top:3px solid var(--red)} .stat.s-leaver .stat-n{color:var(--red)}
.stat.s-disposed{border-top:3px solid var(--grey)} .stat.s-disposed .stat-n{color:var(--grey)}

.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px 22px;margin-bottom:20px}
.panel h2{margin:0 0 14px;font-size:15px;font-weight:600;letter-spacing:-.01em}
.panel.warn{border-color:#E9C4BF;background:linear-gradient(0deg,var(--surface),var(--red-w))}
.panel.warn h2{color:var(--red)}
.two{display:grid;grid-template-columns:340px 1fr;gap:20px;align-items:start}

/* tables */
table.grid{width:100%;border-collapse:collapse;font-size:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
table.grid th{text-align:left;font-weight:600;font-size:12.5px;color:var(--muted);padding:11px 14px;background:var(--panel);border-bottom:1px solid var(--line)}
table.grid td{padding:11px 14px;border-bottom:1px solid var(--line)}
table.grid tr:last-child td{border-bottom:0}
table.grid tbody tr:hover td{background:#F7F9FB}
tr.open td{box-shadow:inset 3px 0 0 var(--teal)}
.empty{color:var(--muted);text-align:center;padding:28px 0}

/* asset-tag chip — the subject's own vernacular */
.tag{font-family:var(--mono);font-weight:600;font-size:12.5px;background:var(--ink);color:#fff;padding:3px 7px;border-radius:5px;letter-spacing:.01em;white-space:nowrap}
.tag::before{content:"#";opacity:.5;margin-right:1px}
.tag-none{background:var(--grey-w);color:var(--muted)}.tag-none::before{content:""}
.chip{font-size:12px;font-weight:600;padding:3px 9px;border-radius:20px;white-space:nowrap;display:inline-block}
.st-available{background:var(--green-w);color:var(--green)}
.st-assigned{background:var(--teal-wash);color:var(--teal-ink)}
.st-leaver{background:var(--red-w);color:var(--red)}
.st-repair{background:var(--amber-w);color:var(--amber)}
.st-disposed{background:var(--grey-w);color:var(--grey)}

/* filters + forms */
.filters{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap}
.filters input,.filters select,.form input,.form select,.form textarea,.issue select{font:inherit;padding:9px 12px;border:1px solid var(--line);border-radius:7px;background:var(--surface);color:var(--ink)}
.filters input{flex:1;min-width:220px}
.filters input:focus,.form input:focus,.form select:focus,.form textarea:focus,.issue select:focus{outline:2px solid var(--teal);outline-offset:0;border-color:var(--teal)}
.btn{font:inherit;font-weight:600;background:var(--teal);color:#fff;border:1px solid var(--teal);padding:9px 16px;border-radius:7px;cursor:pointer}
.btn:hover{background:var(--teal-ink);text-decoration:none}
.btn.ghost{background:transparent;color:var(--teal-ink)}
.btn.small{padding:5px 11px;font-size:13px}
.form{display:grid;grid-template-columns:1fr 1fr;gap:14px 18px;max-width:720px}
.form label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:500;color:var(--muted)}
.form label input,.form label select,.form label textarea{font-weight:400;color:var(--ink)}
.form .wide{grid-column:1/-1}

/* device detail */
.kv{display:flex;justify-content:space-between;gap:16px;padding:9px 0;border-bottom:1px solid var(--line);font-size:14px}
.kv:last-child{border-bottom:0}.kv span{color:var(--muted)}
.issue{display:flex;gap:8px;margin-bottom:16px}.issue select{flex:1}
.holder{background:var(--teal-wash);border-radius:7px;padding:10px 14px;display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 16px}
.inline{display:inline}
.timeline{list-style:none;margin:0;padding:0;border-left:2px solid var(--line);margin-left:6px}
.timeline li{position:relative;padding:8px 0 8px 20px}
.timeline li::before{content:"";position:absolute;left:-7px;top:14px;width:10px;height:10px;border-radius:50%;background:var(--line);border:2px solid var(--surface)}
.timeline li.open::before{background:var(--teal)}
.tl-when{font-size:12.5px;color:var(--muted);display:block}
.tl-who{font-weight:500}

/* by-type bars */
.bars{display:flex;flex-direction:column;gap:8px}
.bar{display:grid;grid-template-columns:110px 1fr;align-items:center;gap:12px;font-size:13px}
.bar-t{background:var(--panel);border-radius:5px;height:26px;position:relative;overflow:hidden}
.bar-t::before{content:"";position:absolute;inset:0;width:var(--w);background:var(--teal-wash)}
.bar-t b{position:absolute;left:10px;top:50%;transform:translateY(-50%);font-family:var(--mono);font-weight:600;color:var(--teal-ink)}

@media (max-width:820px){
  body{grid-template-columns:1fr}
  .rail{position:static;height:auto;flex-direction:row;align-items:center;gap:6px;padding:12px}
  .rail nav{flex-direction:row;flex-wrap:wrap}.brand{padding:0 12px 0 4px}.rail-foot{display:none}
  main{padding:22px 18px}.stats{grid-template-columns:repeat(2,1fr)}.two{grid-template-columns:1fr}.form{grid-template-columns:1fr}
}
@media (prefers-color-scheme:dark){
  :root{--ground:#0E1217;--ink:#E7ECF1;--muted:#93A0AD;--panel:#1A212B;--surface:#151B23;--line:#28313D;
    --teal:#2AA7A3;--teal-ink:#7FD6D2;--teal-wash:#12302F;--green:#4CC17E;--green-w:#122C1E;
    --amber:#E0A63E;--amber-w:#33280F;--red:#EB6A5E;--red-w:#3A1B18;--grey:#8A94A0;--grey-w:#232A33}
  .tag{background:#2AA7A3;color:#06110F}.rail{background:#090C10}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

/* auth */
.rail-logout{background:none;border:1px solid #2A333F;color:#9AA6B2;font:inherit;font-size:13px;padding:7px 12px;border-radius:7px;width:100%;cursor:pointer;margin-top:8px}
.rail-logout:hover{background:#1D2530;color:#fff}
body.login{display:flex;align-items:center;justify-content:center;background:var(--ground)}
.loginbox{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:34px 32px;width:340px;display:flex;flex-direction:column;gap:14px;box-shadow:0 8px 40px rgba(18,22,28,.06)}
.loginbox .brand{padding:0 0 2px}.login-sub{margin:0 0 8px;color:var(--muted);font-size:14px}
.login-err{background:var(--red-w);color:var(--red);padding:9px 12px;border-radius:7px;font-size:13px;margin:0}
.loginbox label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:500;color:var(--muted)}
.loginbox input{font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink)}
.loginbox input:focus{outline:2px solid var(--teal);border-color:var(--teal)}
.loginbox .btn{margin-top:6px;justify-content:center;padding:11px}