:root {
  color-scheme: light dark;
  --bg: #f6f6f4;
  --panel: #fff;
  --text: #1f2328;
  --muted: #68707a;
  --line: #dfe1e4;
  --accent: #2563eb;
  --accent-text: #fff;
  --user: #dbe7ff;
  --error: #c62828;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17191c;
    --panel: #202328;
    --text: #e7e9ec;
    --muted: #9aa2ac;
    --line: #363a41;
    --accent: #6d9cff;
    --accent-text: #10131a;
    --user: #27395c;
    --error: #ff8a80;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
}
h1 { font-size: 22px; margin: 0 0 4px; }
.muted { color: var(--muted); font-weight: normal; }
.small { font-size: 12px; }
.error { color: var(--error); margin: 6px 0 0; font-size: 13px; }
.error:empty { display: none; }

button {
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: var(--accent-text);
  padding: 6px 12px;
  font: inherit;
  cursor: pointer;
}
button.ghost { background: transparent; color: var(--text); border-color: var(--line); }
button:disabled { opacity: .5; cursor: default; }
input, textarea, select {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--text);
  padding: 6px 8px;
  font: inherit;
}
input, textarea { width: 100%; }
textarea { resize: vertical; }
label { font-size: 13px; }
label.check { display: inline-flex; gap: 4px; align-items: center; }
label.check input { width: auto; }

.login { max-width: 420px; margin: 12vh auto 0; padding: 0 16px; }
.login form { display: grid; gap: 12px; margin: 20px 0; }
.login label { display: grid; gap: 4px; font-size: 14px; }

.app { height: 100dvh; display: flex; flex-direction: column; }
.app > header {
  display: flex; align-items: center; gap: 12px;
  padding: 8px 16px; border-bottom: 1px solid var(--line); background: var(--panel);
}
.spacer { flex: 1; }
.tabs { display: flex; gap: 4px; }
.tabs button { background: transparent; color: var(--text); border-color: transparent; }
.tabs button[aria-selected="true"] { border-color: var(--accent); color: var(--accent); }
.app > header > button { padding: 4px 10px; font-size: 13px; }

.chat-view, .compare-view { flex: 1; min-height: 0; display: flex; flex-direction: column; padding: 0 16px 12px; }
.toolbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; padding: 10px 0; }
.log { flex: 1; min-height: 0; overflow-y: auto; padding: 8px 0; display: flex; flex-direction: column; gap: 8px; }
.composer { display: flex; gap: 8px; align-items: flex-end; }
.composer textarea { resize: none; }
.composer button { white-space: nowrap; }

.bubble { max-width: 85%; padding: 8px 12px; border-radius: 10px; white-space: pre-wrap; overflow-wrap: anywhere; }
.bubble.user { align-self: flex-end; background: var(--user); }
.bubble.assistant { align-self: flex-start; background: var(--panel); border: 1px solid var(--line); }
.bubble.live { border-style: dashed; }
.bubble.failed { border-color: var(--error); }
.meta { display: block; margin-top: 4px; font-size: 11px; color: var(--muted); white-space: normal; }
.meta .meta-line { display: block; margin-top: 2px; }

.columns { flex: 1; min-height: 0; display: grid; gap: 10px; grid-auto-flow: column; grid-auto-columns: minmax(260px, 1fr); overflow-x: auto; padding-bottom: 8px; }
.column { display: flex; flex-direction: column; min-height: 0; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 8px; }
.column-head { display: flex; justify-content: space-between; align-items: baseline; }
.column-settings { display: grid; gap: 6px; margin: 6px 0; }
.column-settings select { width: 100%; }
.column-settings > label { display: grid; gap: 2px; }
/* Settings fold away; the log takes what they leave. Open, they scroll on their own, so the log keeps
   at least half the column. */
.column-settings { max-height: 50%; overflow-y: auto; }
.column-fold summary { cursor: pointer; font-size: 13px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.column-fold[open] summary { white-space: normal; }
.column-rel .column-relationship { margin-top: 6px; }
.column-skills p { margin: 4px 0; }
.column-skill { display: grid; gap: 2px; margin-top: 6px; }
.column-skill.off textarea { opacity: 0.5; }
.column-skill-head { display: flex; align-items: center; gap: 6px; font-size: 13px; }
.column-skill-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--accent); }
.column-skill textarea { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; min-height: 14em; resize: vertical; }
/* While a column's skills are open they get most of the column, so a skill reads as more than a few
   lines; folding them gives the log its room back. */
.column-settings:has(.column-skills[open]) { max-height: 85%; }
.column-skill-on { display: inline-flex; align-items: center; gap: 3px; flex: none; white-space: nowrap; cursor: pointer; }
.column-skill-head button { flex: none; white-space: nowrap; }
.skill-editor { width: min(1100px, 94vw); height: min(880px, 90vh); padding: 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); color: var(--text); }
.skill-editor[open] { display: flex; flex-direction: column; gap: 6px; }
.skill-editor::backdrop { background: rgb(0 0 0 / 0.45); }
.skill-editor header { display: flex; align-items: center; gap: 10px; }
.skill-editor header strong { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.skill-editor header button { flex: none; white-space: nowrap; }
.skill-editor textarea { flex: 1; min-height: 0; width: 100%; resize: none; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; line-height: 1.5; }
.skill-editor p { margin: 0; }
.column-settings > label.column-web { display: inline-flex; align-items: center; gap: 4px; font-size: 13px; white-space: nowrap; cursor: pointer; }
.column-skillbook { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; margin: 4px 0; font-size: 13px; }
.column-skillbook .column-skill-on:has(input:disabled) { opacity: 0.55; cursor: not-allowed; }
.column-skill-from { flex: none; white-space: nowrap; color: var(--muted); font-size: 11px; }
.column-skill-from.edited { color: var(--accent); }
.skillbook-picker { width: min(720px, 94vw); max-height: 85vh; padding: 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); color: var(--text); }
.skillbook-picker[open] { display: flex; flex-direction: column; gap: 6px; }
.skillbook-picker::backdrop { background: rgb(0 0 0 / 0.45); }
.skillbook-picker header { display: flex; align-items: center; gap: 10px; }
.skillbook-picker header strong { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.skillbook-picker button { flex: none; white-space: nowrap; }
.skillbook-picker p { margin: 0; }
#skillbook-list { overflow-y: auto; min-height: 0; }
#skillbook-list li { display: flex; align-items: flex-start; gap: 10px; padding: 6px 0; border-top: 1px solid var(--line); }
#skillbook-list li > div { flex: 1; min-width: 0; display: grid; gap: 2px; }
#skillbook-list .skillbook-name { color: var(--accent); font-weight: 600; }
#skillbook-list .skillbook-desc { font-size: 12px; color: var(--muted); overflow-wrap: anywhere; }
#skillbook-list button { padding: 2px 10px; font-size: 12px; }
.column-skill-actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.column-skill-actions button, .column-skill-actions .button-like, .column-skill-head button { padding: 2px 8px; font-size: 12px; }
.button-like { display: inline-block; cursor: pointer; border: 1px solid var(--line); border-radius: 6px; }
.column-voice label { display: grid; gap: 2px; margin-top: 6px; }
.column-voice textarea { font-size: 12px; }
.column-voice button { margin-top: 6px; padding: 2px 8px; font-size: 12px; }
.column .bubble { max-width: 100%; font-size: 14px; }
/* A reply drawn from Markdown (markdown.js). */
.bubble.md { white-space: normal; }
.md-view > :first-child { margin-top: 0; }
.md-view > :last-child { margin-bottom: 0; }
.md-view p, .md-view ul, .md-view ol, .md-view blockquote, .md-view pre, .md-view table { margin: 0 0 8px; }
.md-view ul, .md-view ol { padding-left: 1.4em; }
.md-view li > ul, .md-view li > ol { margin: 2px 0 0; }
.md-view h1, .md-view h2, .md-view h3, .md-view h4, .md-view h5, .md-view h6 { margin: 10px 0 6px; line-height: 1.3; }
.md-view h1 { font-size: 1.25em; }
.md-view h2 { font-size: 1.15em; }
.md-view h3, .md-view h4, .md-view h5, .md-view h6 { font-size: 1em; }
.md-view hr { border: 0; border-top: 1px solid var(--line); margin: 10px 0; }
.md-view blockquote { padding-left: 10px; border-left: 3px solid var(--line); color: var(--muted); }
.md-view code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.9em; padding: 1px 4px; border-radius: 4px; background: var(--user); }
.md-view pre { padding: 8px; border-radius: 6px; background: var(--user); overflow-x: auto; white-space: pre; }
.md-view pre code { padding: 0; background: none; }
/* .bubble.md wraps as normal text; spaces inside an inline code span are kept. */
.md-view :not(pre) > code { white-space: break-spaces; }
.md-view table { display: block; max-width: 100%; overflow-x: auto; border-collapse: collapse; font-size: 0.95em; }
.md-view th, .md-view td { padding: 3px 8px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.md-view th { background: var(--user); }
.md-view .align-center { text-align: center; }
.md-view .align-right { text-align: right; }
.md-view a { color: var(--accent); overflow-wrap: anywhere; }
.md-raw { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.9em; }
.md-toggle { display: block; margin: 6px 0 0 auto; padding: 1px 8px; font-size: 11px; }
.column-relationship { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 8px; margin: 0; padding: 4px 8px 8px; border: 1px solid var(--line, #ddd); border-radius: 6px; }
.column-relationship legend { font-size: 13px; color: var(--muted); padding: 0 4px; }
.column-relationship label { display: grid; gap: 2px; font-size: 13px; }
.column-relationship select, .column-relationship input { width: 100%; min-width: 0; }
.column-relationship:disabled { opacity: 0.55; }
.used-blocks { display: block; margin-top: 4px; font-size: 11px; color: var(--muted); }
.used-blocks summary { cursor: pointer; }
.used-blocks pre { white-space: pre-wrap; word-break: break-word; margin: 4px 0 0; font-size: 11px; max-height: 240px; overflow: auto; }
.tool-line { align-self: flex-start; max-width: 85%; font-size: 12px; color: var(--muted); }
.tool-line summary { cursor: pointer; padding: 2px 8px; border: 1px solid var(--line); border-radius: 999px; background: var(--panel); list-style: none; }
.tool-line summary::-webkit-details-marker { display: none; }
.tool-line[data-status="failed"] summary { border-color: var(--error); color: var(--error); }
.tool-line[data-status="running"] summary { border-style: dashed; }
.tool-line > div { margin: 4px 0 0 8px; padding: 6px 8px; border-left: 2px solid var(--line); display: grid; gap: 4px; }
.tool-line .tool-key { display: inline-block; min-width: 4.5em; margin-right: 6px; color: var(--text); }
.chat-card { align-self: flex-start; max-width: 85%; padding: 8px 10px; border: 1px solid var(--accent); border-radius: 8px; background: var(--panel); display: grid; gap: 6px; font-size: 13px; }
.chat-card .card-note { font-size: 12px; color: var(--muted); }
.chat-card .card-note:empty { display: none; }
.chat-card[data-state="failed"] { border-color: var(--error); }
.chat-card[data-state="failed"] .card-note { color: var(--error); }
.chat-card[data-state="approved"], .chat-card[data-state="denied"] { border-color: var(--line); }
.tool-line pre { display: block; margin: 2px 0 0; white-space: pre-wrap; word-break: break-word; font-size: 11px; max-height: 200px; overflow: auto; }
.column .tool-line { max-width: 100%; }
/* A skill's line: the accent colour, so it reads apart from a tool's. */
.tool-line.skill summary { border-color: var(--accent); color: var(--accent); background: var(--user); }
.blind .column-settings, .blind .used-blocks { display: none; }
.blind .meta .model { display: none; }

@media (max-width: 760px) {
  .app > header { flex-wrap: wrap; }
  .columns { grid-auto-columns: minmax(240px, 85vw); }
  .bubble { max-width: 95%; }
}

.sign-view { padding: 12px 16px; overflow: auto; }
.sign-view h2 { margin: 16px 0 4px; }
ul.plain { list-style: none; margin: 0; padding: 0; }
ul.plain li { padding: 6px 0; border-bottom: 1px solid var(--line); }
.banner { display: flex; gap: 8px; align-items: center; padding: 8px 16px; background: var(--panel); border-bottom: 2px solid var(--error); color: var(--error); }

/* The compare tab's skill modes and score (#232, score.js). */
.column-skill-mode-box { display: inline-flex; align-items: center; gap: 4px; }
.column-skill-mode-box:has(select:disabled) { opacity: 0.55; }
.column-skill-core { flex: 1 1 100%; font-size: 13px; }
.select-note { font-size: 12px; color: var(--muted); margin: 4px 0; white-space: pre-wrap; }
.select-note.failed { color: var(--error, #b42318); }
.score-panel { margin-top: 8px; }
.score-panel > summary { cursor: pointer; font-size: 14px; }
.score-number { width: 5em; }
.score-table { border-collapse: collapse; margin: 8px 0; font-size: 13px; display: block; overflow-x: auto; }
.score-table th, .score-table td { border: 1px solid var(--line); padding: 3px 6px; text-align: left; white-space: nowrap; }