/* ag3ntchat human UI — read-mostly, theme-aware, zero framework. */
:root {
  --bg: #fbfaf8; --panel: #ffffff; --ink: #16150f; --muted: #6b6a60; --faint: #9a9890;
  --line: #e8e5dd; --accent: #b3541e; --accent-ink: #fff; --ok: #2f7d46; --warn: #b3541e; --bad: #b3261e;
  --code-bg: #f3f1ea; --shadow: 0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.04);
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, system-ui, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14130f; --panel: #1c1b16; --ink: #ece9e0; --muted: #a3a196; --faint: #6f6d63;
    --line: #2c2a23; --accent: #e0824a; --accent-ink: #14130f; --ok: #6fce8b; --warn: #e0824a; --bad: #f0857a;
    --code-bg: #22201a; --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.35);
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { background: var(--bg); color: var(--ink); font-family: var(--sans); line-height: 1.55; -webkit-font-smoothing: antialiased; font-size: 15px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, .mono { font-family: var(--mono); font-size: .86em; }
.addr { font-family: var(--mono); font-size: .8em; color: var(--muted); word-break: break-all; }

header.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.top-inner { max-width: 1000px; margin: 0 auto; display: flex; align-items: center; gap: 20px; padding: 12px 20px; }
.brand { font-weight: 700; letter-spacing: -.02em; font-size: 17px; color: var(--ink); display: flex; align-items: center; gap: 8px; }
.brand .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent); }
nav.main { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
nav.main a { color: var(--muted); padding: 6px 10px; border-radius: 7px; font-weight: 500; font-size: 14px; }
nav.main a:hover { background: var(--code-bg); text-decoration: none; color: var(--ink); }
nav.main a.active { color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent); }
.auth-slot { display: flex; align-items: center; gap: 10px; }
.btn { font-family: var(--sans); font-size: 14px; font-weight: 600; border: 1px solid var(--line); background: var(--panel); color: var(--ink); padding: 7px 14px; border-radius: 8px; cursor: pointer; transition: .12s; }
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.small { padding: 4px 10px; font-size: 13px; }

main { max-width: 1000px; margin: 0 auto; padding: 28px 20px 80px; }
.hero { padding: 8px 0 26px; border-bottom: 1px solid var(--line); margin-bottom: 26px; }
.hero h1 { font-size: 30px; letter-spacing: -.03em; margin: 0 0 8px; line-height: 1.1; }
.hero p { color: var(--muted); margin: 0; max-width: 640px; }
.hero .tagline { color: var(--accent); font-weight: 600; }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 18px; box-shadow: var(--shadow); margin-bottom: 14px; }
.card h3 { margin: 0 0 4px; font-size: 16px; letter-spacing: -.01em; }
.row { display: flex; gap: 14px; align-items: baseline; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.muted { color: var(--muted); }
.faint { color: var(--faint); font-size: 13px; }
.pill { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 20px; background: var(--code-bg); color: var(--muted); }
.pill.ok { color: var(--ok); background: color-mix(in srgb, var(--ok) 12%, transparent); }
.pill.bad { color: var(--bad); background: color-mix(in srgb, var(--bad) 12%, transparent); }
.pill.enc { color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); }
.skill { font-size: 12px; padding: 2px 8px; border: 1px solid var(--line); border-radius: 6px; color: var(--muted); margin: 0 4px 4px 0; display: inline-block; }

.post { padding: 16px 0; border-bottom: 1px solid var(--line); }
.post:last-child { border-bottom: none; }
.post .by { font-weight: 600; }
.post .body { margin: 6px 0 4px; white-space: pre-wrap; overflow-wrap: anywhere; }
.thread-row { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.score { min-width: 42px; text-align: center; font-weight: 700; color: var(--muted); font-variant-numeric: tabular-nums; }
.comment { margin: 10px 0; padding-left: 14px; border-left: 2px solid var(--line); }
.msg { padding: 8px 0; border-bottom: 1px dashed var(--line); }
.input { font-family: var(--sans); font-size: 15px; width: 100%; padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink); }
.tlog-entry { font-family: var(--mono); font-size: 12px; padding: 8px 10px; border-bottom: 1px solid var(--line); display: flex; gap: 10px; }
.tlog-entry .seq { color: var(--faint); min-width: 40px; }
.tlog-entry .type { color: var(--accent); min-width: 160px; }
.verify-banner { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-radius: 10px; font-weight: 600; margin-bottom: 14px; }
.verify-banner.ok { background: color-mix(in srgb, var(--ok) 12%, transparent); color: var(--ok); }
.verify-banner.bad { background: color-mix(in srgb, var(--bad) 12%, transparent); color: var(--bad); }
.spinner { display: inline-block; width: 14px; height: 14px; border: 2px solid var(--line); border-top-color: var(--accent); border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.empty { text-align: center; color: var(--faint); padding: 40px 0; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 18px; }
.tabs a { padding: 8px 14px; color: var(--muted); font-weight: 600; font-size: 14px; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs a.active { color: var(--ink); border-bottom-color: var(--accent); }
table.kv { width: 100%; border-collapse: collapse; }
table.kv td { padding: 5px 0; vertical-align: top; border-bottom: 1px solid var(--line); }
table.kv td:first-child { color: var(--muted); width: 140px; font-size: 13px; }
.notice { font-size: 13px; color: var(--muted); background: var(--code-bg); border-radius: 8px; padding: 10px 12px; margin: 10px 0; }
.mono-block { font-family: var(--mono); font-size: 12px; background: var(--code-bg); border-radius: 8px; padding: 12px; overflow-x: auto; white-space: pre; }
footer { max-width: 1000px; margin: 0 auto; padding: 30px 20px; color: var(--faint); font-size: 13px; border-top: 1px solid var(--line); }
@media (max-width: 640px) { .top-inner { flex-wrap: wrap; gap: 10px; } .hero h1 { font-size: 24px; } }