/* Marginal Robotics workshop. Instrument-panel look: dark slate ground, amber accent,
   IBM Plex. Phone = field kit (bottom tabs); desktop (>= 960px) = top bar + workspace. */
:root{
  --bg:#0E1419; --bg2:#0B1015; --panel:#161E25; --panel2:#1B252E; --line:#24303A; --line2:#2E3B46;
  --ink:#E6EAEE; --ink2:#C9D2DA; --muted:#93A1AD; --accent:#F2A541; --accent-ink:#0E1419;
  --ok:#6CC28F; --okbg:#1F2D24; --oktx:#8FD6AA; --warnbg:#2A1E14; --warnline:#6B4520; --warntx:#E3CDB4;
  --sans:"IBM Plex Sans",system-ui,sans-serif; --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  color-scheme:dark;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.45 var(--sans)}
button{font:inherit;color:inherit}
a{color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.muted{color:var(--muted);font-size:13px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.sec{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:18px 0 8px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.row{display:flex;align-items:flex-start;gap:12px;padding:12px 14px;border-bottom:1px solid var(--line);width:100%;
  background:none;border-left:0;border-right:0;border-top:0;text-align:left;min-height:48px;text-decoration:none;color:inherit}
.row:last-child{border-bottom:0}
button.row,a.row{cursor:pointer}
button.row:hover,a.row:hover{background:var(--panel2)}
.row .grow{flex:1;min-width:0}
.row .side{color:var(--muted);font-size:14px;text-align:right}
.ico{display:flex;flex:none;margin-top:2px}
.alert{background:var(--warnbg);border:1px solid var(--warnline);border-radius:12px;padding:14px;display:flex;gap:12px;
  margin-bottom:8px;width:100%;text-align:left;cursor:pointer}
.alert .t{font-weight:600}.alert .d{color:var(--warntx);font-size:14px}
.btns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:12px}
.btn{min-height:48px;border-radius:10px;border:1px solid var(--line2);background:var(--panel);font-weight:600;cursor:pointer;padding:0 14px}
.btn.primary{background:var(--accent);color:var(--accent-ink);border:0}
.btn:disabled{opacity:.5;cursor:default}
.chip{display:inline-flex;align-items:center;gap:6px;padding:3px 8px;border-radius:4px;font-size:12px;background:var(--panel2);color:var(--ink2)}
.chip.ok{background:var(--okbg);color:var(--oktx)}
.seg{display:inline-flex;gap:4px;flex-wrap:wrap}
.seg button{font-size:13px;padding:8px 12px;border-radius:6px;border:1px solid var(--line2);background:transparent;color:var(--ink2);cursor:pointer;min-height:36px}
.seg button[aria-pressed="true"]{border-color:var(--accent);background:var(--panel2);color:var(--ink)}
.err{color:var(--accent);font-size:14px;min-height:20px}

/* ---- shells ---- */
.phone{max-width:600px;margin:0 auto;padding:0 16px calc(84px + env(safe-area-inset-bottom))}
.phone header.top{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:18px 0 8px}
.phone h1{font-size:18px;font-weight:600;margin:0}
.tabs{position:fixed;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));background:#121920;
  border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);z-index:10}
.tabs a{min-height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;text-decoration:none;color:var(--muted);font-size:12px}
.tabs a[aria-current="page"]{color:var(--accent);font-weight:600}

.desk{min-height:100vh;display:flex;flex-direction:column}
.desk header.bar{display:flex;flex-wrap:wrap;align-items:center;gap:12px 28px;padding:12px 28px;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:17px;letter-spacing:.01em;color:var(--ink);text-decoration:none}
.desk nav{display:flex;gap:4px;flex-wrap:wrap}
.desk nav a{color:var(--muted);text-decoration:none;padding:8px 12px;border-radius:6px}
.desk nav a[aria-current="page"]{color:var(--ink);background:var(--panel2)}
.pills{margin-left:auto;display:flex;flex-wrap:wrap;gap:8px;font-size:13px}
.pill{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border:1px solid var(--line);border-radius:999px;color:var(--ink2);text-decoration:none}
.desk main{flex:1;padding:24px 28px;max-width:1600px;width:100%;margin:0 auto}
.desk .narrow{max-width:640px}

/* ---- drive workspace ---- */
.ws{display:grid;grid-template-columns:280px minmax(0,1fr) 300px;gap:24px;align-items:start}
.ws aside{display:flex;flex-direction:column;gap:10px;min-width:0}
.drivecard{display:block;text-decoration:none;color:var(--ink);background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:14px}
.drivecard[aria-current="page"]{border-color:var(--accent)}
.drivecard .t{font-weight:600}
.drivecard .chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.ws main{min-width:0;display:flex;flex-direction:column;gap:16px}
.title{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 16px}
.title h1{margin:0;font-size:26px;font-weight:600}
.view3d{position:relative;height:min(62vh,560px);border-radius:12px;border:1px solid var(--line);overflow:hidden;background:var(--bg2)}
.view3d canvas{display:block;width:100%;height:100%;touch-action:none}
.view3d .over{position:absolute;left:12px;top:12px;right:12px;display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap;pointer-events:none}
.view3d .over > *{pointer-events:auto}
.view3d .hint{position:absolute;right:12px;bottom:12px;font:12px var(--mono);color:var(--muted);background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:6px 10px}
.view3d .loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--muted)}
.pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px;min-width:0}
.map{height:260px;border-radius:8px;overflow:hidden;background:var(--bg2)}
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:6px;max-height:260px;overflow:auto}
.thumbs button{padding:0;border:0;background:var(--line);border-radius:4px;overflow:hidden;cursor:zoom-in;aspect-ratio:3/2}
.thumbs img{width:100%;height:100%;object-fit:cover;display:block}
.stat{font-family:var(--mono);font-size:34px;font-weight:500;margin-top:4px;font-variant-numeric:tabular-nums}
.kv{display:flex;justify-content:space-between;gap:12px;padding:6px 0;border-bottom:1px solid var(--line)}
.kv:last-child{border-bottom:0}
.kv span:first-child{color:var(--ink2)}
.kv span:last-child{font-family:var(--mono);text-align:right}
.note{color:var(--muted);font-size:13px;margin-top:8px}
.lightbox{position:fixed;inset:0;background:rgba(5,8,11,.92);display:flex;align-items:center;justify-content:center;z-index:50;padding:16px}
.lightbox img{max-width:100%;max-height:100%;border-radius:8px}
.lightbox button{position:absolute;top:12px;right:12px;min-width:44px;min-height:44px;border-radius:999px;border:1px solid var(--line2);background:var(--panel);cursor:pointer}

@media (max-width:1200px){.ws{grid-template-columns:240px minmax(0,1fr)} .ws .stats{grid-column:1 / -1;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}}
.phone .view3d{height:min(56vh,420px)}
.phone .pair{grid-template-columns:1fr}
.login{max-width:360px;margin:18vh auto 0;padding:0 16px}
.login input{width:100%;min-height:52px;border-radius:10px;border:1px solid var(--line2);background:var(--panel);color:var(--ink);padding:0 14px;font:inherit;margin:8px 0 12px}
.login label{color:var(--muted);font-size:14px}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
.desk .mid{max-width:900px}
.md{color:var(--ink2);line-height:1.6;font-size:15px;min-width:0}
.md h1,.md h2,.md h3{color:var(--ink);line-height:1.25;margin:1.4em 0 .5em;text-wrap:balance}
.md h1{font-size:22px}.md h2{font-size:19px}.md h3{font-size:16px}
.md p,.md ul,.md ol{margin:.6em 0}
.md code{font-family:var(--mono);font-size:.88em;background:var(--bg2);padding:1px 5px;border-radius:4px;overflow-wrap:anywhere}
.md pre{background:var(--bg2);padding:12px;border-radius:8px;overflow-x:auto}
.md pre code{background:none;padding:0}
.md hr{border:0;border-top:1px solid var(--line);margin:1.5em 0}
.md .tblwrap{overflow-x:auto;margin:.8em 0}
.md table{border-collapse:collapse;font-size:14px;min-width:100%}
.md th,.md td{border-bottom:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.md th{color:var(--muted);font-weight:500}
.md a{color:var(--accent)}
.md strong{color:var(--ink)}
.sheet{width:100%;height:78vh;border:1px solid var(--line);border-radius:12px;background:#fff}