/* Oida — one system: warm green-black, parchment ink, one tonal sage accent.
   Serif with character for the voice (system Iowan/Palatino stack), system sans
   for UI, mono strictly for data and code. No gradients, glows, shadows, pills,
   or hover-lifts. Depth comes from tonal surface steps only. */

:root {
  --ink0: #0f1411;
  --ink1: #161d18;
  --ink2: #1f2822;
  --ink3: #283329;
  --paper: #e9e4d4;
  --muted: #93a294;
  --dim: #7b8b7e; /* tertiary/data; kept >= 4.5:1 on ink0 */
  --accent: #c9d6b8;
  --serif: 'Iowan Old Style', 'Palatino Linotype', Palatino, Georgia, serif;
  --sans: system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: ui-monospace, 'SF Mono', Menlo, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  background: var(--ink0);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
}

/* Premium noise: behind everything, felt not seen. */
.grain {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.028;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

.sr { position: absolute; width: 1px; height: 1px; clip-path: inset(50%); overflow: hidden; }

.mono { font-family: var(--mono); font-size: 12px; color: var(--dim); }

/* ── Shell ───────────────────────────────────────────── */

.shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 264px minmax(0, 1fr);
  height: 100vh;
}

/* ── Sidebar ─────────────────────────────────────────── */

.side {
  background: var(--ink1);
  display: flex;
  flex-direction: column;
  padding: 22px 16px 18px;
  gap: 16px;
  overflow-y: auto;
}

.brand { display: flex; align-items: baseline; gap: 10px; text-decoration: none; padding: 0 6px; }
.glyph { font-family: var(--serif); font-style: italic; font-size: 26px; color: var(--accent); }
.brandname { font-size: 13px; color: var(--dim); }

.newchat {
  background: var(--ink2);
  color: var(--paper);
  border: none;
  border-radius: 4px;
  font-family: var(--sans);
  font-size: 14px;
  text-align: left;
  padding: 10px 12px;
  cursor: pointer;
  transition: background-color 150ms ease;
}
.newchat:hover { background: var(--ink3); }
.newchat:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.convos { flex: 1; display: flex; flex-direction: column; gap: 2px; min-height: 40px; }

.convos a {
  display: block;
  color: var(--muted);
  text-decoration: none;
  font-size: 13.5px;
  padding: 8px 10px;
  border-radius: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: background-color 150ms ease, color 150ms ease;
}
.convos a:hover { background: var(--ink2); color: var(--paper); }
.convos a.active { background: var(--ink2); color: var(--paper); }
.convos .empty { color: var(--dim); font-size: 13px; font-style: italic; padding: 8px 10px; }

.places { display: flex; flex-direction: column; gap: 2px; padding-top: 10px; }
.places a {
  color: var(--muted);
  text-decoration: none;
  font-size: 13.5px;
  padding: 8px 10px;
  border-radius: 4px;
  transition: background-color 150ms ease, color 150ms ease;
}
.places a:hover, .places a.active { background: var(--ink2); color: var(--paper); }

.me { display: flex; flex-direction: column; gap: 4px; padding: 12px 10px 0; }
.whoname { color: var(--muted); font-size: 13px; overflow: hidden; text-overflow: ellipsis; }
.quiet { color: var(--dim); font-size: 13px; text-decoration: none; transition: color 150ms ease; }
.quiet:hover, .quiet:focus-visible { color: var(--paper); }

/* ── Stage ───────────────────────────────────────────── */

.stage { display: flex; flex-direction: column; min-width: 0; height: 100vh; }
.view { display: flex; flex-direction: column; flex: 1; min-height: 0; }
.view.pad { padding: 44px 56px; overflow-y: auto; display: block; }

.pagehead { font-family: var(--serif); font-weight: 400; font-size: 30px; }
.pagesub { color: var(--muted); margin: 8px 0 30px; max-width: 60ch; }

/* ── Chat thread ─────────────────────────────────────── */

.thread { flex: 1; overflow-y: auto; padding: 40px 56px 24px; }

.hero {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.mark { font-family: var(--serif); font-style: italic; font-size: 116px; line-height: 1.15; color: var(--accent); }
.motto { font-family: var(--serif); font-size: 21px; margin-top: 4px; }
.corpus { color: var(--muted); font-size: 14.5px; margin-top: 12px; }

.turn { max-width: 76ch; margin: 0 auto 40px; }

.turn-q {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.35;
  color: var(--paper);
  margin-bottom: 14px;
}

.conflict {
  background: var(--ink1);
  border-radius: 4px;
  padding: 12px 14px;
  margin-bottom: 14px;
  font-family: var(--serif);
  font-style: italic;
  font-size: 15px;
}
.conflict .clabel { color: var(--accent); font-style: normal; }

.ans { font-family: var(--serif); font-size: 17px; line-height: 1.65; margin-bottom: 16px; }

.cite {
  color: var(--accent);
  text-decoration: none;
  font-size: 12.5px;
  vertical-align: super;
  line-height: 0;
  transition: color 150ms ease;
}
.cite:hover, .cite:focus-visible { color: #ffffff; }

.evidence { margin: 6px 0 10px; }

.evidence a {
  display: block;
  text-decoration: none;
  background: var(--ink1);
  border-radius: 4px;
  padding: 9px 12px;
  margin-bottom: 6px;
  transition: background-color 150ms ease;
}
.evidence a:hover, .evidence a:focus-visible { background: var(--ink2); }
.evidence .cnum { font-family: var(--serif); color: var(--accent); margin-right: 8px; font-size: 14px; }
.evidence .ctitle { color: var(--paper); font-size: 14px; }
.evidence .cdata { display: block; font-family: var(--mono); font-size: 11px; color: var(--dim); margin-top: 4px; }
.evidence .flash { background: var(--ink3); }

.stampline { font-family: var(--mono); font-size: 11.5px; color: var(--dim); }

.busyline { font-family: var(--serif); font-style: italic; color: var(--muted); font-size: 17px; max-width: 76ch; margin: 0 auto 40px; }

/* ── Composer ────────────────────────────────────────── */

.composer { padding: 14px 56px 24px; }
.composer form { display: flex; gap: 10px; max-width: 76ch; margin: 0 auto; }

#q {
  flex: 1;
  background: var(--ink1);
  border: none;
  border-radius: 4px;
  color: var(--paper);
  font-family: var(--serif);
  font-size: 17.5px;
  padding: 14px 16px;
  transition: background-color 150ms ease;
}
#q::placeholder { color: var(--dim); font-style: italic; }
#q:hover { background: var(--ink2); }
#q:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; background: var(--ink1); }

#askBtn {
  background: var(--accent);
  color: var(--ink0);
  border: none;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  padding: 0 24px;
  cursor: pointer;
  transition: background-color 150ms ease;
}
#askBtn:hover { background: #d8e3c9; }
#askBtn:focus-visible { outline: 2px solid var(--paper); outline-offset: 2px; }
#askBtn:disabled { background: var(--ink2); color: var(--dim); cursor: default; }

/* ── Panels (MCP / Index pages) ──────────────────────── */

.panel { background: var(--ink1); border-radius: 4px; padding: 20px 22px; margin-bottom: 18px; max-width: 900px; }
.panelhead { font-family: var(--serif); font-style: italic; font-weight: 400; font-size: 17px; color: var(--muted); margin-bottom: 12px; }

.kv { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.kv .mono { font-size: 13px; color: var(--paper); word-break: break-all; }

pre.snippet {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--paper);
  background: var(--ink0);
  border-radius: 4px;
  padding: 14px 16px;
  overflow-x: auto;
  line-height: 1.6;
}

.copybtn {
  background: var(--ink2);
  color: var(--paper);
  border: none;
  border-radius: 4px;
  font-size: 12.5px;
  padding: 7px 12px;
  cursor: pointer;
  transition: background-color 150ms ease;
}
.copybtn:hover { background: var(--ink3); }
.copybtn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.rows { display: flex; flex-direction: column; }
.row {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 2fr) auto;
  gap: 14px;
  align-items: baseline;
  padding: 10px 2px;
}
.row + .row { margin-top: 2px; }
.row .r-name { color: var(--paper); font-size: 14px; overflow: hidden; text-overflow: ellipsis; }
.row .r-data { font-family: var(--mono); font-size: 11.5px; color: var(--dim); overflow: hidden; text-overflow: ellipsis; }
.row .r-act { display: flex; gap: 8px; }
.row.revoked .r-name { color: var(--dim); text-decoration: line-through; }

.tokenbox { background: var(--ink0); border-radius: 4px; padding: 14px 16px; margin-top: 12px; }
.tokenbox .tk { font-family: var(--mono); font-size: 13px; color: var(--accent); word-break: break-all; display: block; margin: 8px 0 10px; }
.tokenbox .note { color: var(--muted); font-size: 13px; }

.inline-form { display: flex; gap: 10px; margin-top: 12px; }
.inline-form input {
  flex: 1;
  max-width: 320px;
  background: var(--ink0);
  border: none;
  border-radius: 4px;
  color: var(--paper);
  font-family: var(--mono);
  font-size: 13px;
  padding: 9px 12px;
}
.inline-form input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.statgrid { display: flex; gap: 36px; flex-wrap: wrap; }
.stat .n { font-family: var(--serif); font-size: 34px; color: var(--paper); }
.stat .l { color: var(--dim); font-size: 12.5px; margin-top: 2px; }

.err { color: #d9a09a; font-size: 13.5px; margin-top: 10px; }

/* ── Sign-in ─────────────────────────────────────────── */

.signin {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 48px 24px 96px;
}
.signhead { font-family: var(--serif); font-weight: 400; font-size: 28px; margin-top: 8px; }
.signsub { color: var(--muted); margin: 10px 0 30px; }

.gbtn {
  display: inline-block;
  background: var(--accent);
  color: var(--ink0);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  border-radius: 4px;
  padding: 13px 30px;
  transition: background-color 150ms ease;
}
.gbtn:hover { background: #d8e3c9; }
.gbtn:focus-visible { outline: 2px solid var(--paper); outline-offset: 2px; }

.devlink {
  margin-top: 22px;
  background: none;
  border: none;
  color: var(--dim);
  font-size: 13px;
  cursor: pointer;
  transition: color 150ms ease;
}
.devlink:hover, .devlink:focus-visible { color: var(--paper); }

/* ── Small screens ───────────────────────────────────── */

@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; height: auto; }
  .side { flex-direction: row; flex-wrap: wrap; align-items: center; gap: 10px; }
  .convos { flex-basis: 100%; max-height: 180px; }
  .me { margin-left: auto; flex-direction: row; gap: 12px; padding: 0; }
  .stage { height: auto; min-height: 70vh; }
  .thread, .composer { padding-left: 20px; padding-right: 20px; }
  .view.pad { padding: 28px 20px; }
  .mark { font-size: 84px; }
  .row { grid-template-columns: 1fr; gap: 4px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

/* The hidden attribute must always win, including over class display rules. */
[hidden] { display: none !important; }