/* The HTML `hidden` attribute must always win.
   Any rule that sets `display` on an element -- `.overlay { display: flex }` being
   the one that actually bit us -- overrides the user-agent `[hidden] { display: none }`,
   because both are author-versus-UA and the author rule wins. The result was an
   invisible full-screen overlay that silently swallowed every click in the app.
   This single declaration is the guard, and it belongs at the top so nothing after
   it can reintroduce the bug. */
[hidden] { display: none !important; }

/* YouTube Knowledge Compiler — no build step, no framework, no web fonts.
   System fonts only so the app works offline and starts instantly. */

:root {
  --bg: #0f1115;
  --bg2: #151922;
  --card: #181d27;
  --card2: #1f2531;
  --line: #2a3140;
  --line2: #374156;
  --fg: #e8ecf3;
  --fg2: #a7b0c0;
  --fg3: #737e91;
  --accent: #5b9cf8;
  --accent-fg: #08111f;
  --good: #3fbf7f;
  --warn: #e2b33c;
  --bad: #ef6b6b;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 8px 30px rgba(0, 0, 0, .38);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

html[data-theme="light"] {
  --bg: #f6f7f9;
  --bg2: #eef0f4;
  --card: #ffffff;
  --card2: #f4f6f9;
  --line: #dde1e8;
  --line2: #c6ccd8;
  --fg: #131720;
  --fg2: #4d5769;
  --fg3: #7b8598;
  --accent: #1f6feb;
  --accent-fg: #ffffff;
  --good: #17864f;
  --warn: #9a6b00;
  --bad: #c0392b;
  --shadow: 0 6px 24px rgba(16, 24, 40, .10);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
}

body[data-loading="true"] main { opacity: 0; }
main { transition: opacity .18s ease; }

h1, h2, h3, h4 { margin: 0; font-weight: 650; letter-spacing: -.01em; }
h1 { font-size: 15px; }
h2 { font-size: 14px; }
p { margin: 0 0 .6em; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre, textarea.mono { font-family: var(--mono); font-size: 12.5px; }
code { background: var(--card2); padding: .1em .35em; border-radius: 4px; }

.skip {
  position: absolute; left: -9999px;
}
.skip:focus { left: 8px; top: 8px; z-index: 99; background: var(--card); padding: 8px 12px; border-radius: 8px; }

.muted { color: var(--fg2); }
.small { font-size: 12.5px; }
.mono { font-family: var(--mono); }
.center { justify-content: center; }
.wrap { flex-wrap: wrap; }

/* ------------------------------------------------------------------ topbar */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 18px;
  padding: 10px 18px;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.logo { width: 26px; height: 26px; flex: none; }
.logo path { fill: var(--accent); }
.logo .tri { fill: var(--accent-fg); }
.brand .tag {
  margin: 0; font-size: 11.5px; color: var(--fg3);
  max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  font-family: var(--mono);
}
.topbar-right { margin-left: auto; display: flex; gap: 8px; align-items: center; }

.tabs { display: flex; gap: 2px; background: var(--bg2); padding: 3px; border-radius: 10px; }
.tab {
  appearance: none; border: 0; background: transparent; color: var(--fg2);
  font: inherit; font-size: 13.5px; font-weight: 550;
  padding: 6px 14px; border-radius: 7px; cursor: pointer;
}
.tab:hover { color: var(--fg); }
.tab[aria-selected="true"] { background: var(--card); color: var(--fg); box-shadow: 0 1px 2px rgba(0,0,0,.2); }

/* ------------------------------------------------------------------ layout */
main { padding: 20px 18px 64px; max-width: 1180px; margin: 0 auto; }
.view { display: grid; gap: 16px; }
#view-library { grid-template-columns: 268px minmax(0, 1fr); align-items: start; }
.col-side { display: grid; gap: 16px; position: sticky; top: 68px; }
.col-main { display: grid; gap: 16px; min-width: 0; }

@media (max-width: 900px) {
  #view-library { grid-template-columns: 1fr; }
  .col-side { position: static; }
  .tabs { overflow-x: auto; }
  .brand .tag { display: none; }
}

/* ------------------------------------------------------------------- cards */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}
.card-head {
  display: flex; align-items: center; gap: 10px;
  margin: -2px 0 12px;
}
.card-head h2 { margin-right: auto; }
.cards { display: grid; gap: 12px; }

/* ------------------------------------------------------------------ fields */
.field { display: grid; gap: 5px; margin-bottom: 12px; }
.label { font-size: 12px; font-weight: 600; color: var(--fg2); letter-spacing: .01em; }
input[type="text"], input[type="search"], input[type="number"],
input[type="password"], input[type="url"], select, textarea {
  width: 100%;
  background: var(--bg2);
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 9px 11px;
  font: inherit;
}
textarea { resize: vertical; font-family: var(--mono); font-size: 13px; line-height: 1.5; }
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}
select { appearance: none; background-image: none; cursor: pointer; }
input[type="file"] { font-size: 12.5px; color: var(--fg2); }

.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 0 14px; }
.check { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--fg2); margin: 4px 0; cursor: pointer; }
.check input { width: auto; }

/* ----------------------------------------------------------------- buttons */
button {
  font: inherit; cursor: pointer; border-radius: var(--radius-sm);
  border: 1px solid transparent; padding: 8px 15px; font-weight: 550;
  transition: background .12s, border-color .12s, opacity .12s;
}
button:disabled { opacity: .5; cursor: default; }
.primary { background: var(--accent); color: var(--accent-fg); }
.primary:hover:not(:disabled) { background: color-mix(in srgb, var(--accent) 88%, white); }
.ghost { background: var(--card2); color: var(--fg); border-color: var(--line); }
.ghost:hover:not(:disabled) { border-color: var(--line2); background: var(--card); }
.ghost.small { padding: 5px 10px; font-size: 12.5px; }
.ghost.icon { padding: 6px 9px; }
.danger { color: var(--bad); }
.row { display: flex; align-items: center; gap: 8px; }
.actions { display: flex; align-items: center; gap: 10px; margin-top: 4px; }

/* ---------------------------------------------------------------- capture */
.opts { margin: 8px 0 12px; border-top: 1px solid var(--line); padding-top: 10px; }
.opts > summary {
  cursor: pointer; font-size: 13px; color: var(--fg2); font-weight: 600;
  list-style: none; padding: 2px 0;
}
.opts > summary::-webkit-details-marker { display: none; }
.opts > summary::before { content: "▸ "; color: var(--fg3); }
.opts[open] > summary::before { content: "▾ "; }
.opts > div, .opts > label { margin-top: 12px; }
.manual { border: 1px dashed var(--line2); border-radius: var(--radius-sm); padding: 12px; display: grid; gap: 10px; }

.parse { display: grid; gap: 6px; margin-bottom: 12px; }
.parse-item {
  display: flex; align-items: center; gap: 8px;
  font-size: 12.5px; padding: 7px 10px;
  background: var(--bg2); border-radius: var(--radius-sm);
  border-left: 3px solid var(--line2);
}
.parse-item.ok { border-left-color: var(--good); }
.parse-item.bad { border-left-color: var(--bad); }
.parse-item.dupe { border-left-color: var(--warn); }
.parse-item .vid { font-family: var(--mono); color: var(--fg3); }
.parse-item .msg { margin-left: auto; color: var(--fg2); }

/* ------------------------------------------------------------------ queue */
.queue { display: grid; gap: 8px; }
.job {
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 10px 12px; background: var(--bg2); display: grid; gap: 6px;
}
.job-top { display: flex; align-items: baseline; gap: 8px; }
.job-title { font-weight: 550; font-size: 13.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.job-top .row { margin-left: auto; flex: none; }
.job-stage { font-size: 12.5px; color: var(--fg2); display: flex; align-items: center; gap: 7px; }
.job.failed { border-color: color-mix(in srgb, var(--bad) 45%, var(--line)); }
.job.completed { border-color: color-mix(in srgb, var(--good) 40%, var(--line)); }
.job-err { font-size: 12.5px; color: var(--bad); }
.job-hints { margin: 2px 0 0; padding-left: 18px; font-size: 12.5px; color: var(--fg2); }

/* An indeterminate bar: honest about not knowing how long this takes. */
.bar { height: 3px; border-radius: 3px; background: var(--line); overflow: hidden; }
.bar > i { display: block; height: 100%; width: 34%; background: var(--accent); animation: slide 1.25s ease-in-out infinite; }
@keyframes slide { 0% { transform: translateX(-100%); } 100% { transform: translateX(320%); } }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--fg3); flex: none; }
.dot.run { background: var(--accent); animation: pulse 1s ease-in-out infinite; }
.dot.ok { background: var(--good); }
.dot.err { background: var(--bad); }
@keyframes pulse { 50% { opacity: .35; } }

/* --------------------------------------------------------------- lib items */
.item {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 13px 14px;
  display: grid; grid-template-columns: 132px minmax(0, 1fr); gap: 14px;
}
.item .thumb {
  width: 132px; aspect-ratio: 16/9; border-radius: var(--radius-sm);
  object-fit: cover; background: var(--bg2); border: 1px solid var(--line);
}
.item h3 { font-size: 14.5px; line-height: 1.35; margin-bottom: 3px; }
.item .meta { font-size: 12px; color: var(--fg3); margin-bottom: 6px; }
.item .snip { font-size: 13px; color: var(--fg2); margin-bottom: 8px; }
.item .snip mark { background: color-mix(in srgb, var(--accent) 30%, transparent); color: var(--fg); border-radius: 3px; }
.item .row.wrap { gap: 6px; }
@media (max-width: 620px) {
  .item { grid-template-columns: 1fr; }
  .item .thumb { width: 100%; }
}

.pill {
  display: inline-block; font-size: 11.5px; padding: 2px 8px;
  border-radius: 999px; background: var(--card2); color: var(--fg2);
  border: 1px solid var(--line); cursor: pointer;
}
.pill:hover { border-color: var(--line2); color: var(--fg); }
.pill.on { background: var(--accent); color: var(--accent-fg); border-color: transparent; }
.pill.plain { cursor: default; }
.pill.g-excellent { color: var(--good); border-color: color-mix(in srgb, var(--good) 40%, var(--line)); }
.pill.g-good { color: var(--good); }
.pill.g-fair { color: var(--warn); }
.pill.g-weak, .pill.g-poor { color: var(--bad); }
.tagcloud { display: flex; flex-wrap: wrap; gap: 5px; max-height: 190px; overflow: auto; }
.stats { display: grid; gap: 3px; font-size: 12.5px; color: var(--fg2); margin-bottom: 10px; }
.stats b { color: var(--fg); font-variant-numeric: tabular-nums; }

.empty { text-align: center; padding: 46px 20px; color: var(--fg2); }
.empty h3 { margin-bottom: 6px; color: var(--fg); }

/* ----------------------------------------------------------------- search */
.searchbar { display: flex; gap: 8px; }
.searchbar input { flex: 1; }
.searchbar select { width: auto; flex: none; }
@media (max-width: 560px) { .searchbar { flex-wrap: wrap; } .searchbar input { min-width: 100%; } }

/* ------------------------------------------------------------------- chat */
.chatlog { display: grid; gap: 10px; margin: 12px 0; max-height: 56vh; overflow: auto; }
.msg { padding: 10px 12px; border-radius: var(--radius-sm); font-size: 13.5px; }
.msg.user { background: var(--card2); border: 1px solid var(--line); }
.msg.bot { background: var(--bg2); border: 1px solid var(--line); }
.msg .cites { margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--line); font-size: 12px; display: grid; gap: 3px; }

/* --------------------------------------------------------------- settings */
.setting { padding: 13px 0; border-top: 1px solid var(--line); }
.setting:first-of-type { border-top: 0; padding-top: 2px; }
.setting h3 { font-size: 13.5px; margin-bottom: 3px; }
.setting .why { font-size: 12.5px; color: var(--fg2); margin: 0 0 9px; }
.checkrow {
  display: flex; gap: 9px; align-items: flex-start;
  font-size: 13.5px; padding: 6px 0; cursor: pointer;
}
.checkrow input { width: auto; margin-top: 3px; flex: none; }
.checkrow .why { margin: 2px 0 0; }
.chk {
  display: flex; align-items: flex-start; gap: 9px;
  font-size: 13px; padding: 7px 10px; border-radius: var(--radius-sm);
  background: var(--bg2); border-left: 3px solid var(--line2); margin-bottom: 6px;
}
.chk.ok { border-left-color: var(--good); }
.chk.warning { border-left-color: var(--warn); }
.chk.error { border-left-color: var(--bad); }
.chk b { font-weight: 600; }
.chk .fix { color: var(--fg2); font-size: 12.5px; display: block; margin-top: 2px; }
.chk pre {
  margin: 5px 0 0; padding: 6px 8px; background: var(--card2);
  border-radius: 6px; overflow-x: auto; white-space: pre-wrap; word-break: break-word;
}
.banner {
  padding: 10px 12px; border-radius: var(--radius-sm); font-size: 13px;
  background: color-mix(in srgb, var(--accent) 12%, var(--card2));
  border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--line));
  margin-bottom: 12px;
}
.banner.warn { background: color-mix(in srgb, var(--warn) 12%, var(--card2)); border-color: color-mix(in srgb, var(--warn) 32%, var(--line)); }
.banner.bad { background: color-mix(in srgb, var(--bad) 12%, var(--card2)); border-color: color-mix(in srgb, var(--bad) 32%, var(--line)); }

/* -------------------------------------------------------------- note sheet */
.overlay {
  position: fixed; inset: 0; z-index: 40;
  background: rgba(4, 6, 10, .6);
  display: flex; align-items: stretch; justify-content: flex-end;
}
.sheet {
  width: min(920px, 100%); height: 100%;
  background: var(--bg); border-left: 1px solid var(--line);
  box-shadow: var(--shadow);
  display: flex; flex-direction: column;
  animation: slidein .16s ease;
}
@keyframes slidein { from { transform: translateX(24px); opacity: .6; } }
.sheet-head {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 14px 16px; border-bottom: 1px solid var(--line);
}
.sheet-head > div:first-child { min-width: 0; flex: 1; }
.sheet-head h2 { font-size: 15.5px; line-height: 1.35; }
.sheet-head .row { flex: none; }
.sheet-tabs { display: flex; gap: 2px; padding: 8px 12px; border-bottom: 1px solid var(--line); overflow-x: auto; }
.stab {
  background: transparent; border: 0; color: var(--fg2);
  font-size: 12.5px; font-weight: 550; padding: 5px 11px; border-radius: 7px; white-space: nowrap;
}
.stab:hover { color: var(--fg); }
.stab.active { background: var(--card); color: var(--fg); }
.sheet-body { flex: 1; overflow: auto; padding: 18px 22px 40px; }
.sheet-foot {
  border-top: 1px solid var(--line); padding: 10px 14px;
  display: flex; flex-wrap: wrap; gap: 7px; align-items: center;
  background: var(--card);
}
.pane { max-width: 74ch; }
#pane-markdown, #pane-transcript { max-width: none; }
#mdView, #mdEdit {
  width: 100%; white-space: pre-wrap; word-break: break-word;
  background: var(--bg2); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 14px; margin: 0;
  font-family: var(--mono); font-size: 12.5px; line-height: 1.6;
}
#mdEdit { min-height: 64vh; }

/* Rendered markdown */
.md h1 { font-size: 20px; margin: 0 0 12px; }
.md h2 { font-size: 15.5px; margin: 26px 0 8px; padding-bottom: 5px; border-bottom: 1px solid var(--line); }
.md h3 { font-size: 14px; margin: 18px 0 5px; }
.md p, .md li { font-size: 14px; }
.md ul, .md ol { padding-left: 22px; margin: 0 0 12px; }
.md li { margin-bottom: 4px; }
.md blockquote {
  margin: 0 0 14px; padding: 8px 14px;
  border-left: 3px solid var(--line2); color: var(--fg2); font-size: 13px;
}
.md table { border-collapse: collapse; width: 100%; margin: 0 0 14px; font-size: 13px; }
.md th, .md td { border: 1px solid var(--line); padding: 6px 9px; text-align: left; vertical-align: top; }
.md th { background: var(--card2); font-weight: 600; }
.md hr { border: 0; border-top: 1px solid var(--line); margin: 18px 0; }
.md code { font-size: 12.5px; }
.md a.ts {
  font-family: var(--mono); font-size: 12px; padding: 1px 5px;
  background: var(--card2); border-radius: 4px; border: 1px solid var(--line);
  text-decoration: none; white-space: nowrap;
}
.md a.ts:hover { border-color: var(--accent); }
.md .wl { border-bottom: 1px dashed var(--accent); }
.md input[type="checkbox"] { width: auto; margin-right: 6px; }

.tscript { display: grid; gap: 14px; }
.tscript .blk { display: grid; grid-template-columns: 62px minmax(0, 1fr); gap: 12px; }
.tscript .blk p { margin: 0; font-size: 13.5px; }

/* ----------------------------------------------------------------- toasts */
.toasts { position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%); z-index: 60; display: grid; gap: 8px; width: min(520px, calc(100vw - 32px)); }
.toast {
  background: var(--card); border: 1px solid var(--line2);
  border-radius: var(--radius-sm); padding: 10px 13px; font-size: 13px;
  box-shadow: var(--shadow); animation: rise .16s ease;
}
.toast.err { border-color: color-mix(in srgb, var(--bad) 55%, var(--line)); }
.toast.ok { border-color: color-mix(in srgb, var(--good) 50%, var(--line)); }
@keyframes rise { from { transform: translateY(8px); opacity: 0; } }

.spin {
  display: inline-block; width: 12px; height: 12px; flex: none;
  border: 2px solid var(--line2); border-top-color: var(--accent);
  border-radius: 50%; animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001s !important; transition-duration: .001s !important; }
}


/* A setting pinned by an environment variable: visibly inert, with the reason stated
   inline. Muting the whole block is clearer than a disabled control on its own,
   which just looks like a bug. */
.setting.locked h3,
.checkrow.locked > span > b { opacity: .62; }
.setting.locked select,
.setting.locked input,
.setting.locked button { cursor: not-allowed; }
.why.lock {
  color: var(--warn, #b45309);
  font-style: normal;
}
.why.lock::before { content: "\1F512\00a0"; }


/* --------------------------------------------------------------------------
   Utility classes.

   These exist so the Content-Security-Policy can forbid inline styles outright
   (`style-src 'self'` with no 'unsafe-inline'). A style="" attribute set from
   JavaScript is blocked by that policy, so the handful of one-off spacing tweaks
   the SPA used to apply inline live here instead.
   -------------------------------------------------------------------------- */
.offscreen { position: fixed; opacity: 0; pointer-events: none; }
.spacer-8 { height: 8px; }
.item-single { grid-template-columns: 1fr; }
.mt-10 { margin-top: 10px; }
.mt-12 { margin-top: 12px; }
.mt-18 { margin-top: 18px; }
.pad-sm { padding: 5px 10px; }
.push-right { margin-left: auto; }