:root{
  --bg:#f7f7f5; --panel:#ffffff; --ink:#1c1c1a; --muted:#6b6b66;
  --line:#e2e2dd; --accent:#2f5f8f; --accent-soft:#eaf1f8;
  --warn:#8f5f2f; --danger:#a03030; --ok:#2f7f4f;
  --radius:8px;
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#17181b; --panel:#1f2125; --ink:#e9e9e6; --muted:#9b9b95;
    --line:#33353a; --accent:#6fa3d8; --accent-soft:#22314a;
    --warn:#dba36a; --danger:#e07575; --ok:#5fc98a;
  }
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-size:14px;line-height:1.5}
code,pre,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace}
code{background:var(--bg);padding:1px 5px;border-radius:4px}
pre{background:var(--bg);border:1px solid var(--line);border-radius:6px;
  padding:10px 12px;overflow-x:auto;margin:8px 0 0}
pre code{background:none;padding:0}

.topbar{display:flex;align-items:center;gap:24px;padding:10px 20px;background:var(--panel);
  border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.brand{font-weight:600;letter-spacing:.01em;white-space:nowrap}
.brand .mark{color:var(--accent)}
.topbar nav{display:flex;gap:4px;flex:1;flex-wrap:wrap}
.topbar nav a{color:var(--muted);text-decoration:none;padding:5px 10px;border-radius:6px}
.topbar nav a:hover{background:var(--accent-soft);color:var(--accent)}
.who{color:var(--muted);font-size:13px;white-space:nowrap}
.who .tag{color:var(--accent);font-weight:500}

main{max-width:1100px;margin:0 auto;padding:20px}
h1{font-size:20px;margin:0 0 4px}
h2{font-size:15px;margin:22px 0 8px}
.sub{color:var(--muted);margin:0 0 18px}

.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px 16px;margin-bottom:14px}
/* auto-fit, not auto-fill: auto-fill reserves empty tracks for columns that
   have no card to put in them, so with only one or two cohorts the real card
   gets squeezed into a narrow first track instead of using the row's width -
   the "cut off" white box. auto-fit collapses the empty tracks instead. */
.grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}

.dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:7px;
  vertical-align:middle;background:var(--muted)}
.dot.active{background:var(--ok);box-shadow:0 0 0 3px rgba(47,127,79,.15)}
.dot.idle{background:#c8a13a}
.dot.unknown{background:#c4c4bd}

.badge{display:inline-block;padding:1px 7px;border-radius:10px;font-size:11px;font-weight:500}
.avatar{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;
  border-radius:50%;font-size:10px;font-weight:700;flex:none;vertical-align:middle}
.muted{color:var(--muted)}
.small{font-size:12px}

button,.btn{font:inherit;padding:6px 12px;border:1px solid var(--line);border-radius:6px;
  background:var(--panel);color:var(--ink);cursor:pointer}
button:hover{border-color:var(--accent);color:var(--accent)}
button.primary{background:var(--accent);border-color:var(--accent);color:#fff}
button.primary:hover{filter:brightness(1.1);color:#fff}
button.link{border:none;background:none;padding:2px 4px;color:var(--muted)}
input,textarea,select{font:inherit;padding:7px 9px;border:1px solid var(--line);
  border-radius:6px;background:var(--panel);color:var(--ink);width:100%}
textarea{resize:vertical;min-height:74px}
label{display:block;font-size:12px;color:var(--muted);margin:10px 0 3px}

.msg{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:10px 13px;margin-bottom:9px}
.msg.unread{border-left:3px solid var(--accent)}
.msg header{display:flex;gap:9px;align-items:baseline;margin-bottom:5px}
.msg .from{font-weight:600}
.msg .body{white-space:pre-wrap;word-break:break-word}
.msg .gv{color:var(--warn);font-size:12px;margin-bottom:4px}
.mention{color:var(--accent);font-weight:500}

.chips{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}
.chip{padding:3px 10px;border:1px solid var(--line);border-radius:12px;background:var(--panel);
  cursor:pointer;font-size:12px;color:var(--muted)}
.chip.on{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}

.rxn{display:inline-flex;gap:4px;align-items:center;border:1px solid var(--line);
  border-radius:11px;padding:1px 8px;font-size:11px;background:var(--panel);cursor:pointer}
.rxn.mine{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}
.rxn-row{display:flex;gap:5px;flex-wrap:wrap;margin-top:7px}

.modal-bg{position:fixed;inset:0;background:rgba(28,28,26,.4);display:flex;
  align-items:center;justify-content:center;z-index:50}
/* The [hidden] attribute alone loses to the .modal-bg display:flex rule above
   at equal CSS specificity (author beats user-agent default regardless), so
   every modal-bg rendered open on load and Cancel could set hidden without
   ever visually closing it. This rule must win that tie. */
.modal-bg[hidden]{display:none}
.modal{background:var(--panel);border-radius:var(--radius);padding:18px 20px;
  width:min(520px,92vw);max-height:88vh;overflow:auto}

.ac{position:absolute;background:var(--panel);border:1px solid var(--line);
  border-radius:6px;box-shadow:0 4px 14px rgba(0,0,0,.09);z-index:40;min-width:170px}
.ac div{padding:5px 11px;cursor:pointer}
.ac div.sel{background:var(--accent-soft);color:var(--accent)}

table{border-collapse:collapse;width:100%}
th,td{text-align:left;padding:6px 9px;border-bottom:1px solid var(--line)}
th{color:var(--muted);font-weight:500;font-size:12px}
.err{color:var(--danger)}
.ok{color:var(--ok)}

.proj-layout{display:flex;gap:16px;align-items:flex-start}
.proj-main{flex:1;min-width:0}
.proj-sidebar{width:240px;flex-shrink:0;position:sticky;top:12px}

@media (max-width:640px){
  main{padding:12px}
  .topbar{gap:10px;padding:8px 12px;flex-wrap:wrap}
  .topbar nav{gap:2px}
  .topbar nav a{padding:5px 7px;font-size:13px}
  .who{display:none}
  .card{padding:11px 12px}
  .proj-layout{flex-direction:column}
  .proj-sidebar{width:100%;position:static}
  table{display:block;overflow-x:auto;white-space:nowrap}
}