:root {
  --bg: #141413;
  --panel: #1c1c1b;
  --line: #3a3936;
  --text: #e8e6e1;
  --dim: #8f8c85;
  --faint: #5e5c57;
  --accent: #d97757;
  --green: #5fbf73;
  --red: #ff6b6b;
  --yellow: #e5c07b;
  --blue: #7aa2f7;
  --pink: #f472b6;
  --code-bg: #232321;
  --mono: "JetBrains Mono", "Cascadia Mono", "Cascadia Code", "SF Mono", Menlo, Consolas, "Sarasa Mono SC", "Noto Sans Mono CJK SC", "Microsoft YaHei UI", monospace;
}

* { box-sizing: border-box; }

html, body { margin: 0; height: 100%; background: #0d0d0c; color: var(--text); }

body {
  font: 14px/1.6 var(--mono);
  -webkit-font-smoothing: antialiased;
  display: flex;
  justify-content: center;
  padding: 24px;
}

a { color: var(--blue); }

.window {
  width: min(1040px, 100%);
  height: calc(100vh - 48px);
  height: calc(100dvh - 48px);
  display: flex;
  flex-direction: column;
  background: var(--bg);
  border: 1px solid #2b2a28;
  border-radius: 12px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, .55);
  overflow: hidden;
}

.titlebar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 16px;
  background: #1f1f1d;
  border-bottom: 1px solid #2b2a28;
  font-size: 12px;
  color: var(--dim);
  user-select: none;
}
.lights { display: flex; gap: 7px; }
.lights i { width: 12px; height: 12px; border-radius: 50%; background: #ff5f57; }
.lights i:nth-child(2) { background: #febc2e; }
.lights i:nth-child(3) { background: #28c840; }
.title { flex: 1; text-align: center; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.back { color: var(--dim); text-decoration: none; }
.back:hover { color: var(--text); }

.screen {
  flex: 1;
  overflow-y: auto;
  padding: 18px 22px 12px;
  scrollbar-color: #3a3936 transparent;
}

/* ---------- welcome ---------- */
.welcome {
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 12px 16px;
  max-width: 620px;
  margin-bottom: 14px;
}
.welcome .hello { color: var(--text); }
.welcome .hello b { color: var(--accent); font-weight: 600; }
.welcome .sub { color: var(--dim); margin-top: 8px; padding-left: 2ch; }
.welcome .cwd { color: var(--faint); margin-top: 8px; padding-left: 2ch; }

.banner { color: var(--accent); line-height: 1.25; margin: 0 0 14px; font-size: 13px; font-weight: 700; white-space: pre; overflow: hidden; }

.tips { color: var(--dim); margin: 0 0 18px; }
.tips ol { margin: 4px 0 0; padding-left: 3ch; }
.tips code { color: var(--text); }
.mode-note { color: var(--yellow); margin: -8px 0 18px; }

/* ---------- entries ---------- */
.entry { display: grid; grid-template-columns: 2ch 1fr; margin: 0 0 12px; min-width: 0; }
.entry > .body { min-width: 0; overflow-wrap: anywhere; }
.mark { color: var(--text); user-select: none; }

.entry.user { color: var(--dim); }
.entry.user .body { white-space: pre-wrap; }
.entry.user .mark { color: var(--faint); }

.entry.assistant .mark { color: var(--text); }

.entry.tool .mark { color: var(--faint); }
.entry.tool.running .mark { animation: blink 1s steps(2, start) infinite; }
.entry.tool.ok .mark { color: var(--green); }
.entry.tool.err .mark { color: var(--red); }
.tool-head b { font-weight: 700; }
.tool-head .args { color: var(--dim); }
.tool-sub { color: var(--dim); cursor: pointer; display: grid; grid-template-columns: 4ch 1fr; }
.tool-sub:hover .sum { color: var(--text); }
.tool-sub .elbow { color: var(--faint); user-select: none; }
.tool-sub .hint { color: var(--faint); }
.entry.err .tool-sub .sum { color: var(--red); }
.tool-out {
  margin: 4px 0 0 4ch;
  padding: 8px 12px;
  background: var(--panel);
  border-left: 2px solid var(--line);
  white-space: pre;
  overflow-x: auto;
  color: #cfccc5;
  font: inherit;
  font-size: 13px;
  max-height: 420px;
}

.todos { list-style: none; margin: 0; padding: 0 0 0 4ch; }
.todos li { display: grid; grid-template-columns: 3ch 1fr; color: var(--dim); }
.todos li.completed { color: var(--faint); text-decoration: line-through; }
.todos li.in_progress { color: var(--text); font-weight: 700; }
.todos li .box { text-decoration: none; display: inline-block; }
.todos li.completed .box { color: var(--green); }

.entry.thinking { color: var(--faint); font-style: italic; }
.entry.thinking .mark { color: var(--accent); font-style: normal; }
.entry.thinking .think-body { white-space: pre-wrap; margin-top: 2px; }
.entry.thinking .toggle { cursor: pointer; }

.entry.shell .mark { color: var(--pink); }
.entry.shell .cmd { color: var(--pink); }
.entry.shell pre { margin: 2px 0 0; white-space: pre-wrap; font: inherit; color: #d6d3cc; }
.entry.shell .dir { color: var(--blue); font-weight: 700; }

.entry.system { color: var(--dim); }
.entry.system .mark { color: var(--faint); }
.entry.system.error, .entry.system.error .mark { color: var(--red); }
.entry.system.warn, .entry.system.warn .mark { color: var(--yellow); }
.entry.system.accent .mark { color: var(--accent); }

.panel { border: 1px solid var(--line); border-radius: 6px; padding: 8px 14px; margin: 2px 0; }
.panel h4 { margin: 6px 0 2px; color: var(--accent); font-weight: 600; font-size: 13px; }
.kv { display: grid; grid-template-columns: max-content 1fr; column-gap: 2ch; }
.kv dt { color: var(--text); }
.kv dd { margin: 0; color: var(--dim); }

/* ---------- markdown ---------- */
.md > :first-child { margin-top: 0; }
.md > :last-child { margin-bottom: 0; }
.md p { margin: 0 0 8px; }
.md h1, .md h2, .md h3, .md h4 { font-size: 14px; margin: 12px 0 6px; color: var(--text); }
.md h1, .md h2 { color: var(--accent); }
.md strong { color: #fff; }
.md code { background: var(--code-bg); color: #f0b48f; padding: 0 4px; border-radius: 3px; }
.md pre.code { background: var(--panel); border: 1px solid #2b2a28; border-radius: 6px; padding: 10px 12px; overflow-x: auto; margin: 6px 0 10px; }
.md pre.code code { background: none; color: #d6d3cc; padding: 0; white-space: pre; }
.md ul, .md ol { margin: 0 0 8px; padding-left: 3ch; }
.md li { margin: 1px 0; }
.md li.d1 { margin-left: 2ch; }
.md li.d2 { margin-left: 4ch; }
.md li.d3 { margin-left: 6ch; }
.md a { color: var(--blue); }
.md ul { list-style: none; }
.md ul > li::before { content: "•"; color: var(--dim); display: inline-block; width: 2ch; margin-left: -2ch; }
.md blockquote { margin: 0 0 8px; padding-left: 1.5ch; border-left: 2px solid var(--line); color: var(--dim); }
.md hr { border: 0; border-top: 1px solid var(--line); margin: 10px 0; }
.md table { border-collapse: collapse; margin: 4px 0 10px; display: block; overflow-x: auto; }
.md th, .md td { border: 1px solid var(--line); padding: 2px 10px; text-align: left; vertical-align: top; }
.md th { color: var(--accent); font-weight: 600; }

/* ---------- spinner ---------- */
.spinner { color: var(--accent); margin: 0 0 12px; display: flex; gap: 1ch; flex-wrap: wrap; }
.spinner[hidden] { display: none; }
.spinner .glyph { width: 2ch; display: inline-block; }
.spinner .meta { color: var(--faint); }

/* ---------- composer ---------- */
.composer { position: relative; }
.inputbox {
  display: grid;
  grid-template-columns: 2.5ch 1fr;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 12px;
  background: var(--bg);
  transition: border-color .15s;
}
.inputbox:focus-within { border-color: #6b6964; }
.inputbox.bash { border-color: var(--pink); }
.inputbox.bash .prompt { color: var(--pink); }
.inputbox.busy { opacity: .75; }
.prompt { color: var(--dim); user-select: none; line-height: 1.6; }
#input {
  width: 100%;
  resize: none;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  line-height: 1.6;
  padding: 0;
  max-height: 40vh;
  overflow-y: auto;
  caret-color: var(--accent);
}
#input::placeholder { color: var(--faint); }

.statusbar { display: flex; justify-content: space-between; gap: 2ch; color: var(--faint); font-size: 12px; padding: 4px 2px 0; }
.statusbar .warn { color: var(--yellow); }
#hint.bash { color: var(--pink); }

.palette {
  position: absolute;
  left: 0;
  right: 0;
  bottom: calc(100% + 4px);
  max-height: 300px;
  overflow-y: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 4px 0;
  z-index: 5;
  box-shadow: 0 -12px 30px rgba(0, 0, 0, .4);
}
.palette[hidden] { display: none; }
.palette .item { display: grid; grid-template-columns: minmax(16ch, max-content) 1fr; gap: 2ch; padding: 2px 12px; cursor: pointer; color: var(--dim); }
.palette .item .name { color: var(--text); }
.palette .item .tag { color: var(--accent); font-size: 12px; margin-left: 1ch; }
.palette .item .desc { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.palette .item.active { background: #2b2a27; }
.palette .item.active .name { color: var(--accent); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.chips[hidden] { display: none; }
.chips button {
  font: inherit;
  font-size: 12px;
  color: var(--dim);
  background: transparent;
  border: 1px dashed var(--line);
  border-radius: 6px;
  padding: 3px 10px;
  cursor: pointer;
}
.chips button:hover { color: var(--accent); border-color: var(--accent); }

.noscript { color: var(--dim); text-align: center; }

@keyframes blink { to { visibility: hidden; } }

@media (max-width: 640px) {
  body { padding: 0; font-size: 13px; }
  .window { height: 100vh; height: 100dvh; border-radius: 0; border: 0; }
  .screen { padding: 12px 12px 10px; }
  .banner { font-size: 11px; }
  .titlebar .lights { display: none; }
  .palette .item { grid-template-columns: 1fr; gap: 0; padding: 4px 12px; }
  .tool-out { margin-left: 0; }
  .todos { padding-left: 2ch; }
  #hint { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .entry.tool.running .mark { animation: none; }
}

/* 本轮依据：程序生成的事实来源行 */
.entry.system.evidence { color: var(--dim); font-size: 0.92em; }
.entry.system.evidence .label { color: var(--faint); }
.entry.system.evidence .kind { color: var(--faint); }
.entry.system.evidence .none { font-style: italic; }
.entry.system.evidence a { color: var(--accent); text-decoration: none; border-bottom: 1px dotted currentColor; }
.entry.system.evidence a:hover { border-bottom-style: solid; }
.entry.system.evidence code { color: var(--text); background: none; padding: 0; }
.panel .note { color: var(--dim); margin-top: 8px; }