:root {
  --bg: #0b0d0a;
  --rail: #10140f;
  --ink: #e4ece1;
  --dim: #9aa396;
  --faint: #6f786e;
  --line: #2a3128;
  --accent: #9be7ad;
  --cmd: #c8f5d2;
  --amber: #e6c07a;
  --hate: #ff8a5b;
  --err: #ff8d84;
  --font: "IBM Plex Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 13px;
  line-height: 1.45;
  letter-spacing: 0.01em;
}

body.hate { --accent: var(--hate); --cmd: #ffd0bc; }

a { color: inherit; text-decoration: none; }
a:hover { color: var(--cmd); }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  text-align: left;
  cursor: pointer;
}

button:focus-visible,
a:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 2px;
}

input:focus-visible { outline: none; }

.promptline { border-bottom: 1px solid transparent; }
.promptline:focus-within { border-bottom-color: var(--accent); }

.app {
  height: 100vh;
  min-height: 0;
  display: grid;
  grid-template-columns: 252px 1fr;
  grid-template-rows: 30px minmax(0, 1fr) 92px;
  overflow: hidden;
}

.top {
  grid-column: 1 / -1;
  display: flex;
  gap: 18px;
  align-items: center;
  padding: 0 12px;
  border-bottom: 1px solid var(--line);
  border-top: 2px solid var(--accent);
  color: var(--dim);
  font-size: 12px;
  letter-spacing: 0.06em;
  white-space: nowrap;
  overflow: hidden;
}

.brand {
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.18em;
}

.rail {
  border-right: 1px solid var(--line);
  background: var(--rail);
  padding: 14px 12px 20px;
  overflow: auto;
}

.rail h2 {
  margin: 16px 0 6px;
  color: var(--faint);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
}

.rail p {
  margin: 0;
  color: var(--dim);
}

.gutter {
  display: inline-block;
  width: 1.2ch;
  color: var(--accent);
  visibility: hidden;
}
.rail button.on .gutter { visibility: visible; }

.rail button,
.rail a.nav {
  display: grid;
  grid-template-columns: 1.4ch 1fr auto;
  gap: 6px;
  width: 100%;
  padding: 3px 0;
  color: var(--dim);
  min-height: 28px;
  align-items: center;
}

.rail button.on,
.rail a.nav.on { color: var(--ink); }

.rail button:hover,
.rail a.nav:hover { color: var(--cmd); }

.req { color: var(--hate); font-size: 11px; letter-spacing: 0.08em; }

.kv {
  display: grid;
  grid-template-columns: 11ch 1fr;
  gap: 8px;
  padding: 2px 0;
  color: var(--dim);
  white-space: nowrap;
}

.kv b { font-weight: 500; color: var(--ink); }

.tariff {
  width: 100%;
  border-collapse: collapse;
  margin: 4px 0 6px;
  font-size: 12px;
}
.tariff th, .tariff td {
  padding: 2px 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-weight: 400;
}
.tariff th { color: var(--faint); width: 11ch; }
.tariff td { color: var(--ink); }
.tariff-note { margin: 4px 0 0; color: var(--faint); font-size: 11px; }

.mymark {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 8px 0 4px;
  color: var(--ink);
}
.mymark[hidden] { display: none; }
.mymark img { width: 36px; height: 36px; flex: none; }

.speaker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.mark { width: 20px; height: 20px; flex: none; display: block; }

.log { overflow: auto; }

.proto {
  margin: 0;
  padding: 12px 12px 8px;
  display: grid;
  gap: 2px;
  border-bottom: 1px solid var(--line);
}

.proto div {
  display: grid;
  grid-template-columns: 12ch 1fr;
  gap: 12px;
}

.proto dt { color: var(--faint); }
.proto dd { margin: 0; }

.section {
  padding: 12px 12px 2px;
  color: var(--accent);
  letter-spacing: 0.14em;
  font-size: 11px;
}

.cols,
.rec header {
  display: grid;
  grid-template-columns: 15ch 13ch 26ch 10ch 10ch 22ch;
  gap: 8px;
}

.cols {
  position: sticky;
  top: 0;
  z-index: 1;
  padding: 7px 12px;
  background: var(--bg);
  color: var(--faint);
  font-size: 11px;
  letter-spacing: 0.08em;
  border-bottom: 1px solid var(--line);
}

.rec {
  padding: 8px 12px 11px;
  border-bottom: 1px solid var(--line);
}

.rec header {
  color: var(--dim);
  font-size: 12px;
}

.rec header .id { color: var(--accent); }

.rec h2 {
  margin: 5px 0 3px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0;
}

.rec .body,
.agent,
.help {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font: inherit;
  color: var(--ink);
}

.meta {
  margin: 6px 0 0;
  color: var(--faint);
  font-size: 12px;
}

.empty, .hint {
  padding: 2px 12px 12px;
  color: var(--dim);
}
.window { margin: 8px 12px; }
.window a { color: var(--dim); text-decoration: none; }

.hint button { color: var(--amber); min-height: 28px; }
.hint button:hover { color: var(--cmd); }

.promptbar {
  grid-column: 1 / -1;
  border-top: 1px solid var(--line);
  background: #090b08;
  padding: 6px 12px 8px;
  display: grid;
  grid-template-rows: 16px 18px 1fr;
  gap: 2px;
}

.trace, .echo { color: var(--faint); font-size: 12px; overflow: hidden; white-space: nowrap; }
.echo.bad { color: var(--err); }
.echo.ok { color: var(--dim); }

.promptline { display: flex; align-items: center; gap: 8px; min-height: 36px; }
.sig { color: var(--accent); min-width: 9ch; }

input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  color: var(--cmd);
  font: inherit;
  outline: none;
  caret-color: var(--accent);
  min-height: 36px;
}

.agent { padding: 12px; color: var(--dim); }

.switch {
  display: flex;
  gap: 8px;
  margin: 10px 0 16px;
}
.switch a {
  border: 1px solid var(--line);
  padding: 16px 28px;
  font-size: 16px;
  color: var(--dim);
  letter-spacing: 0.14em;
}
.switch a.on {
  color: var(--ink);
  border-color: var(--accent);
}
.glance { margin: 8px 0 4px; }
.glance span { color: var(--faint); margin-right: 8px; letter-spacing: 0.08em; }
.rec.reply { margin-left: 28px; }
.rec.reply .glance { color: var(--amber, var(--accent)); }
.need { color: var(--dim); margin: 6px 0 0; }
.rec.reply h3 { margin: 8px 12px 0; font-size: 12px; font-weight: 500; color: var(--dim); }
.rel { margin: 8px 12px 0; color: var(--amber); }
body.agent .rail { display: none; }
body.agent .app { grid-template-columns: 1fr; }

.about {
  max-width: 68ch;
  margin: 0;
  padding: 28px 22px 48px;
}
.about p, .about li { margin: 0 0 12px; color: var(--ink); }
.about h2 {
  margin: 22px 0 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--accent);
}
.about ul { margin: 0 0 12px; padding-left: 1.2em; }
.about a { color: var(--cmd); text-decoration: underline; text-underline-offset: 2px; }
.about-door { margin-top: 28px; color: var(--dim); }

@media (max-width: 860px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: 30px auto minmax(0, 1fr) 92px;
    height: 100vh;
    overflow: hidden;
  }
  .rail { border-right: 0; border-bottom: 1px solid var(--line); max-height: 220px; }
  .cols, .rec header { grid-template-columns: 1fr 1fr; }
  .top { letter-spacing: 0.02em; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}