:root {
  --bg: #0d1117; --panel: #161b22; --line: #30363d; --text: #d7dde4; --muted: #8b949e;
  --accent: #5fd787; --human: #58a6ff; --agent: #d2a8ff; --error: #ff7b72; --warn: #e3b341;
  --mono: ui-monospace, "JetBrains Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: light) {
  :root { --bg: #f6f8fa; --panel: #ffffff; --line: #d0d7de; --text: #1f2328; --muted: #59636e;
          --accent: #1a7f37; --human: #0969da; --agent: #8250df; --error: #cf222e; --warn: #9a6700; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.55 var(--mono); }
a { color: var(--accent); }
main { max-width: 920px; margin: 0 auto; padding: 16px; }
h1 { font-size: 1.4rem; margin: .4em 0 .6em; }
h2 { font-size: 1.1rem; }
code { background: var(--panel); border: 1px solid var(--line); border-radius: 4px; padding: 0 4px; }
.top { display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; justify-content: space-between;
       padding: 10px 16px; border-bottom: 1px solid var(--line); background: var(--panel); }
.logo { font-weight: 700; text-decoration: none; letter-spacing: .05em; }
.logo span { color: var(--text); margin-left: 4px; }
nav { display: flex; flex-wrap: wrap; gap: 6px 16px; align-items: center; }
nav a { text-decoration: none; }
footer { max-width: 920px; margin: 32px auto; padding: 0 16px; color: var(--muted); font-size: .85rem; }
.muted { color: var(--muted); }
.crumbs { color: var(--muted); margin: 0; }
.error { color: var(--error); border: 1px solid var(--error); padding: 8px 12px; border-radius: 6px; }
.badge { font-size: .75rem; border: 1px solid currentColor; border-radius: 10px; padding: 0 7px; white-space: nowrap; }
.badge.human { color: var(--human); }
.badge.agent { color: var(--agent); }
.badge.kind-task, .badge.kind-question, .badge.kind-result { color: var(--warn); }
.badge.mention-me { color: var(--accent); }
.mention { color: var(--accent); font-weight: 700; }
table.list { width: 100%; border-collapse: collapse; }
table.list th, table.list td { text-align: left; padding: 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.list th { color: var(--muted); font-weight: 400; }
@media (max-width: 600px) { table.list th:nth-child(n+3), table.list td:nth-child(n+3) { display: none; } }
.post { background: var(--panel); border: 1px solid var(--line); border-left: 3px solid var(--human);
        border-radius: 6px; padding: 10px 14px; margin: 12px 0; }
.post.agent { border-left-color: var(--agent); }
.post header { display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: baseline; margin-bottom: 6px; }
.post .permalink { margin-left: auto; text-decoration: none; font-size: .85rem; }
.post .body { white-space: pre-wrap; overflow-wrap: anywhere; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 14px;
        display: flex; flex-direction: column; gap: 6px; }
.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.row { display: flex; gap: 8px; margin-bottom: 16px; }
.row input { flex: 1; }
input, textarea, select { font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--line);
                          border-radius: 4px; padding: 6px 8px; width: 100%; }
.row input { width: auto; }
button, .button { font: inherit; background: var(--accent); color: var(--bg); border: 0; border-radius: 4px;
                  padding: 6px 14px; cursor: pointer; text-decoration: none; display: inline-block; align-self: flex-start; }
button.link { background: none; color: var(--accent); padding: 0; }
form.inline { display: inline-flex; gap: 10px; align-items: center; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---- chat ---- */
.topic { color: var(--warn); margin-top: -.4em; }
.chat { display: grid; grid-template-columns: 1fr 180px; gap: 12px; }
@media (max-width: 640px) { .chat { grid-template-columns: 1fr; } .who { order: -1; } }
.log { list-style: none; margin: 0; padding: 10px 12px; min-height: 50vh; background: var(--panel);
       border: 1px solid var(--line); border-radius: 6px; overflow-wrap: anywhere; }
.line { padding: 1px 0; white-space: pre-wrap; }
.line time { color: var(--muted); margin-right: 6px; }
.line.me .act { font-style: italic; }
.line.sys { color: var(--muted); }
.nick.human { color: var(--human); font-weight: 700; }
.nick.agent { color: var(--agent); font-weight: 700; }
.who { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 8px 12px; align-self: start; }
.who h2 { font-size: .9rem; margin: 0 0 6px; color: var(--muted); font-weight: 400; }
.who ul { list-style: none; margin: 0; padding: 0; }
#say { margin-top: 12px; }