/* Twenty Questions - one stylesheet, both themes, no external fonts. */

:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel2: #1c2330;
  --ink: #e6edf3;
  --ink-dim: #9aa7b4;
  --line: #2a3441;
  --accent: #7c8cff;
  --accent-ink: #0a0f1f;
  --ok: #3fb950;
  --warn: #d29922;
  --bad: #f85149;
  --hold: #d99cff;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius: 12px;
}

:root[data-theme="light"] {
  --bg: #f6f7fb;
  --panel: #ffffff;
  --panel2: #eef0f6;
  --ink: #1f2328;
  --ink-dim: #5b6570;
  --line: #d8dce6;
  --accent: #4b48d6;
  --accent-ink: #ffffff;
  --ok: #1a7f37;
  --warn: #9a6700;
  --bad: #cf222e;
  --hold: #7a2fb0;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
}

code, pre, .mono { font-family: var(--mono); }
.mono { font-size: 0.92em; }
.small { font-size: 0.85em; }
.muted { color: var(--ink-dim); }
.hidden { display: none !important; }
h1, h2, h3 { line-height: 1.25; }

a { color: var(--accent); }
a:hover { text-decoration: underline; }

/* --- top bar ------------------------------------------------------------- */

.topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.brand .sep { color: var(--ink-dim); }
.backlink { text-decoration: none; }
.topactions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.credits { font-family: var(--mono); font-size: 0.85em; color: var(--ink-dim); }
.topup {
  font-size: 0.85em;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  text-decoration: none;
}

/* --- buttons -------------------------------------------------------------- */

button { font-family: inherit; font-size: 1em; cursor: pointer; }

.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 5px 11px;
}
.ghost:hover { background: var(--panel2); }
.ghost:disabled { opacity: 0.45; cursor: not-allowed; }

.primary {
  background: var(--accent);
  color: var(--accent-ink);
  border: none;
  border-radius: 8px;
  padding: 11px 22px;
  font-weight: 600;
}
.primary:disabled { opacity: 0.45; cursor: not-allowed; }

.big {
  background: var(--panel2);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 18px;
  font-weight: 600;
}
.big:hover { border-color: var(--accent); }

.mini {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 3px 9px;
  font-size: 0.85em;
}
.mini:hover { background: var(--panel2); }
.mini:disabled { opacity: 0.45; cursor: not-allowed; }

/* --- layout --------------------------------------------------------------- */

main { max-width: 940px; margin: 0 auto; padding: 24px 20px 72px; }
main.doc { max-width: 820px; }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  margin: 18px 0;
}

.hero { padding: 12px 0 4px; }
.hero h1 { font-size: 1.9rem; margin: 0 0 10px; }
.lede { font-size: 1.05rem; color: var(--ink-dim); margin: 0 0 16px; max-width: 68ch; }
.herobtns { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }

.row { display: flex; gap: 14px; flex-wrap: wrap; }
.row > .field { flex: 1 1 200px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-weight: 600; margin-bottom: 5px; font-size: 0.92em; }
select, input[type="text"], textarea {
  width: 100%;
  background: var(--panel2);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 11px;
  font-family: inherit;
  font-size: 1em;
}
textarea { font-family: var(--mono); font-size: 0.92em; resize: vertical; }
select:focus, input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

/* --- mode switcher -------------------------------------------------------- */

.modes { display: flex; gap: 8px; flex-wrap: wrap; margin: 14px 0 6px; }
.modebtn {
  flex: 1 1 260px;
  text-align: left;
  background: var(--panel);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
}
.modebtn strong { display: block; font-size: 1.02em; }
.modebtn span { display: block; color: var(--ink-dim); font-size: 0.86em; margin-top: 3px; }
.modebtn.active { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.modebtn.active[data-mode="hold"] { border-color: var(--hold); box-shadow: inset 0 0 0 1px var(--hold); }

/* --- the board ------------------------------------------------------------ */

.board { display: grid; grid-template-columns: 1fr; gap: 18px; }
@media (min-width: 900px) {
  .board { grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); align-items: start; }
  .board .side { position: sticky; top: 74px; }
}

.turnstrip {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel2);
  margin-bottom: 14px;
}
.pill {
  font-family: var(--mono);
  font-size: 0.8em;
  padding: 2px 9px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel);
}
.pill.ok { color: var(--ok); border-color: var(--ok); }
.pill.warn { color: var(--warn); border-color: var(--warn); }
.pill.bad { color: var(--bad); border-color: var(--bad); }
.pill.hold { color: var(--hold); border-color: var(--hold); }

.counter { font-family: var(--mono); font-weight: 700; font-size: 1.1em; }

.bitbar {
  flex: 1 1 160px;
  height: 8px;
  border-radius: 999px;
  background: var(--panel);
  border: 1px solid var(--line);
  overflow: hidden;
  min-width: 120px;
}
.bitbar > i { display: block; height: 100%; background: var(--accent); transition: width 0.35s ease; }

/* --- transcript ----------------------------------------------------------- */

.log { display: flex; flex-direction: column; gap: 12px; }
.turn {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  background: var(--panel);
}
.turn.app { border-left: 3px solid var(--accent); }
.turn.player { border-left: 3px solid var(--line); background: var(--panel2); }
.turn.system { border-left: 3px solid var(--warn); background: transparent; }
.turn.guess { border-left-color: var(--warn); }
.turn.finish { border-left-color: var(--ok); }
.turnhead {
  display: flex;
  gap: 8px;
  align-items: baseline;
  flex-wrap: wrap;
  font-size: 0.8em;
  color: var(--ink-dim);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.qtext { font-size: 1.12em; font-weight: 600; margin: 2px 0 6px; }
.thinking { color: var(--ink-dim); font-size: 0.9em; font-style: italic; margin: 0 0 4px; }
.ruled { font-size: 0.84em; color: var(--ink-dim); }
.ruled b { font-weight: 600; color: var(--ink); }
.answerword { font-size: 1.25em; font-weight: 700; text-transform: lowercase; }
.answerword.yes { color: var(--ok); }
.answerword.no { color: var(--bad); }
.answerword.sometimes, .answerword.irrelevant, .answerword.unknown { color: var(--warn); }

.flag {
  margin-top: 8px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--warn);
  background: transparent;
  color: var(--warn);
  font-size: 0.86em;
}
.flag b { display: block; color: var(--ink); }

/* --- answer buttons ------------------------------------------------------- */

.answers { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.ansbtn {
  flex: 1 1 92px;
  background: var(--panel2);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 12px 10px;
  font-weight: 700;
  font-size: 1.02em;
}
.ansbtn:hover { border-color: var(--accent); }
.ansbtn[data-a="yes"]:hover { border-color: var(--ok); color: var(--ok); }
.ansbtn[data-a="no"]:hover { border-color: var(--bad); color: var(--bad); }
.ansbtn:disabled { opacity: 0.4; cursor: not-allowed; }

.askrow { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.askrow input[type="text"] { flex: 1 1 240px; }

/* --- side panel ----------------------------------------------------------- */

.side .card { margin-top: 0; }
.side h2 { font-size: 1.02rem; margin: 0 0 8px; }
.facts { list-style: none; margin: 0; padding: 0; font-size: 0.9em; }
.facts li {
  display: flex;
  gap: 8px;
  padding: 5px 0;
  border-bottom: 1px dashed var(--line);
}
.facts li:last-child { border-bottom: none; }
.facts .n { font-family: var(--mono); color: var(--ink-dim); min-width: 1.8em; }
.facts .q { flex: 1; }
.facts .a { font-weight: 700; text-transform: lowercase; }
.facts .a.yes { color: var(--ok); }
.facts .a.no { color: var(--bad); }
.facts .a.sometimes, .facts .a.irrelevant, .facts .a.unknown { color: var(--warn); }
.facts li.fromguess .q { font-style: italic; }

.axes { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 8px; }
.axis {
  font-size: 0.76em;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-dim);
}
.axis.done { border-color: var(--ok); color: var(--ok); }

/* --- commitment ----------------------------------------------------------- */

.commit {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  border: 1px dashed var(--hold);
  border-radius: 10px;
  padding: 10px 12px;
  margin-top: 12px;
}
.commitcode { font-family: var(--mono); font-weight: 700; letter-spacing: 0.06em; color: var(--hold); }
.commit.verified { border-style: solid; border-color: var(--ok); }
.commit.verified .commitcode { color: var(--ok); }
.commit.broken { border-style: solid; border-color: var(--bad); }
.commit.broken .commitcode { color: var(--bad); }

/* --- progress ------------------------------------------------------------- */

.progress { margin-top: 12px; border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.progresshead {
  display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap;
  font-size: 0.86em; color: var(--ink-dim); margin-bottom: 8px;
}
.steps { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.steps li {
  font-size: 0.8em; padding: 3px 9px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--ink-dim);
}
.steps li.active { border-color: var(--accent); color: var(--accent); }
.steps li.done { border-color: var(--ok); color: var(--ok); }
.stream { font-size: 0.9em; color: var(--ink-dim); margin-top: 8px; white-space: pre-wrap; }

/* --- gate, notices, toast -------------------------------------------------- */

.gate {
  border: 1px solid var(--accent);
  border-radius: 10px;
  padding: 12px 14px;
  margin-top: 12px;
  display: flex; gap: 12px; align-items: center; flex-wrap: wrap;
}
.gate p { margin: 0; flex: 1 1 260px; font-size: 0.92em; }
.notice {
  border-left: 3px solid var(--warn);
  padding: 6px 10px; margin: 10px 0; font-size: 0.88em; color: var(--ink-dim);
}
.notice.bad { border-left-color: var(--bad); }
.notice.ok { border-left-color: var(--ok); }

.toast {
  position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%);
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 16px; z-index: 60; max-width: 92vw; box-shadow: 0 8px 28px rgba(0,0,0,0.35);
  font-size: 0.92em;
}
.toast.err { border-color: var(--bad); }
.toast.ok { border-color: var(--ok); }

/* --- history -------------------------------------------------------------- */

.hist { list-style: none; margin: 0; padding: 0; }
.hist li {
  display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap;
  padding: 8px 0; border-bottom: 1px solid var(--line);
}
.hist li:last-child { border-bottom: none; }
.hist .htitle { flex: 1 1 220px; font-weight: 600; font-size: 0.94em; }
.hist .hmeta { font-family: var(--mono); font-size: 0.78em; color: var(--ink-dim); }
.searchrow { display: flex; gap: 8px; margin-bottom: 10px; flex-wrap: wrap; }
.searchrow input { flex: 1 1 200px; }

.exportrow { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 12px; }

/* --- docs pages ----------------------------------------------------------- */

.doc h1 { font-size: 1.7rem; }
.doc h2 { margin-top: 30px; border-top: 1px solid var(--line); padding-top: 18px; }
.doc pre {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
  overflow-x: auto;
  font-size: 0.86em;
}
.doc table { border-collapse: collapse; width: 100%; font-size: 0.9em; margin: 12px 0; display: block; overflow-x: auto; }
.doc th, .doc td { border: 1px solid var(--line); padding: 6px 9px; text-align: left; vertical-align: top; }
.doc th { background: var(--panel2); }
.codegroup { margin: 12px 0; }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: 6px; }
.tab {
  background: transparent; color: var(--ink-dim); border: 1px solid var(--line);
  border-radius: 6px 6px 0 0; padding: 3px 10px; font-size: 0.82em;
}
.tab.active { color: var(--accent); border-color: var(--accent); background: var(--panel); }

.statebox { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; margin: 14px 0; }
.tokenrow { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0; align-items: center; }
.tokenbox {
  font-family: var(--mono); font-size: 0.84em; word-break: break-all;
  background: var(--panel2); border: 1px solid var(--line); border-radius: 8px;
  padding: 9px 11px; flex: 1 1 260px;
}

.foot {
  border-top: 1px solid var(--line);
  padding: 20px;
  text-align: center;
  color: var(--ink-dim);
  font-size: 0.88em;
}
.foot a { color: var(--ink-dim); }