:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --ink: #1b1e23;
  --muted: #5b6370;
  --line: #d9dde3;
  --accent: #1d5fd6;
  --accent-soft: rgba(29, 95, 214, 0.12);
  --ok: #188a42;
  --warn: #a15c00;
  --bad: #b3261e;
  --box: #e8590c;
  --box-fill: rgba(232, 89, 12, 0.10);
  /* frames of a PDF page's blocks, by type */
  --k-heading: #9c36b5;
  --k-paragraph: #1971c2;
  --k-list: #2b8a3e;
  --k-table: #e8590c;
  font: 15px/1.5 system-ui, -apple-system, 'Segoe UI', Roboto, 'Hiragino Sans', 'Noto Sans JP', sans-serif;
  color: var(--ink);
  background: var(--bg);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; }
a { color: var(--accent); }
code { font: 0.92em ui-monospace, SFMono-Regular, Menlo, monospace; background: #eceef2; padding: 1px 4px; border-radius: 4px; }

.top { padding: 18px 24px 6px; }
.top h1 { margin: 0; font-size: clamp(20px, 2.3vw, 28px); line-height: 1.25; letter-spacing: -0.01em; }
.top .arrow { color: var(--accent); }
.lede { margin: 4px 0 0; color: var(--muted); }
.status { margin: 10px 0 0; display: flex; align-items: center; gap: 8px; font-weight: 600; }
.status .dot { width: 9px; height: 9px; border-radius: 50%; background: #9aa1ab; flex: none; }
.status.ready .dot { background: var(--ok); }
.status.busy .dot { background: var(--accent); animation: pulse 1s ease-in-out infinite; }
.status.failed .dot { background: var(--bad); }
@keyframes pulse { 50% { opacity: 0.3; } }
.detail { margin: 2px 0 0 17px; color: var(--muted); font-size: 13px; min-height: 1em; }
.framed { margin: 6px 0 0 17px; font-size: 13px; }
.notes { margin: 6px 0 0 17px; padding: 0; list-style: none; font-size: 13px; color: var(--warn); }
.notes li { margin: 2px 0; }

main { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px; padding: 12px 24px 28px; align-items: start; overflow-anchor: none; }
.input, .result, .about { min-width: 0; }
.about { grid-column: 1 / -1; color: var(--muted); font-size: 13.5px; max-width: 900px; }
.about h2 { font-size: 15px; color: var(--ink); margin: 8px 0 4px; }
.about p { margin: 6px 0; }

.drop { border: 2px dashed var(--line); border-radius: 12px; background: var(--card); padding: 18px; text-align: center; transition: border-color 0.15s, background 0.15s; }
.drop.over { border-color: var(--accent); background: var(--accent-soft); }
.pick input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.pick span { display: inline-block; background: var(--accent); color: #fff; font-weight: 600; font-size: 16px; padding: 11px 22px; border-radius: 999px; cursor: pointer; user-select: none; }
.pick input:disabled + span { background: #9aa1ab; cursor: default; }
.pick input:focus-visible + span { outline: 3px solid var(--accent-soft); outline-offset: 2px; }
.hint { margin: 8px 0 0; color: var(--muted); font-size: 13.5px; }

.examples { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin: 10px 0 0; }
.examples-label { color: var(--muted); font-size: 13px; margin-right: 2px; }
.example { font: inherit; font-size: 13px; padding: 5px 11px; border: 1px solid var(--line); border-radius: 999px; background: var(--card); color: var(--ink); cursor: pointer; }
.example:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.example:disabled { color: #9aa1ab; cursor: default; }

.figure { margin: 14px 0 0; }
.stage { position: relative; display: inline-block; max-width: 100%; line-height: 0; background: var(--card); border-radius: 8px; overflow: hidden; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08); }
.stage img, .stage canvas { display: block; max-width: 100%; max-height: calc(100vh - 250px); width: auto; height: auto; }
.boxes { position: absolute; left: 0; top: 0; pointer-events: none; }
.boxes rect { fill: var(--box-fill); stroke: var(--box); stroke-width: 2; vector-effect: non-scaling-stroke; }
.boxes rect.hot { fill: rgba(29, 95, 214, 0.25); stroke: var(--accent); stroke-width: 3; }
.boxes rect.block { fill: var(--c); stroke: var(--c); fill-opacity: 0.1; stroke-width: 2.5; }
.block.heading, .key.heading { --c: var(--k-heading); }
.block.paragraph, .key.paragraph { --c: var(--k-paragraph); }
.block.list_item, .key.list_item { --c: var(--k-list); }
.block.table, .key.table { --c: var(--k-table); }
.figure figcaption { margin-top: 6px; color: var(--muted); font-size: 13px; line-height: 1.4; }
.pager { display: inline-flex; gap: 4px; margin-left: 6px; vertical-align: middle; }
.pager button { font: inherit; font-size: 15px; line-height: 1; padding: 3px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--card); color: var(--ink); cursor: pointer; }
.pager button:disabled { color: #b4bac3; cursor: default; }
.legend { display: flex; flex-wrap: wrap; gap: 2px 12px; margin-top: 4px; color: var(--ink); }
.key { display: inline-flex; align-items: center; gap: 5px; }
.key::before { content: ''; width: 10px; height: 10px; border: 2px solid var(--c); border-radius: 2px; background: color-mix(in srgb, var(--c) 14%, transparent); }

.result { background: var(--card); border-radius: 12px; padding: 14px 16px 16px; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08); }
.headline { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 12px; }
.took { margin: 0; font-size: 30px; font-weight: 700; letter-spacing: -0.02em; line-height: 1.15; }
.took .unit { font-size: 0.55em; font-weight: 600; color: var(--muted); letter-spacing: 0; }
.took .value { white-space: nowrap; }
.took-detail { margin: 0; color: var(--muted); font-size: 13px; }

.error { margin: 10px 0 0; border-left: 4px solid var(--bad); background: #fdf2f1; padding: 10px 12px; border-radius: 6px; }
.error.info { border-left-color: var(--warn); background: #fdf6ea; }
.error-title { margin: 0; font-weight: 700; }
.error-text { margin: 4px 0 0; font-size: 14px; white-space: pre-wrap; overflow-wrap: anywhere; }
.password { margin: 10px 0 0; display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.password input { font: inherit; padding: 6px 8px; border: 1px solid var(--line); border-radius: 6px; }
.password button { font: inherit; padding: 6px 14px; border: 0; border-radius: 6px; background: var(--accent); color: #fff; font-weight: 600; cursor: pointer; }

.output { margin-top: 10px; }
.tabs { display: flex; align-items: center; gap: 4px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.tab { font: inherit; font-weight: 600; padding: 7px 12px; border: 0; background: none; color: var(--muted); border-bottom: 3px solid transparent; margin-bottom: -1px; cursor: pointer; }
.tab[aria-selected='true'] { color: var(--ink); border-bottom-color: var(--accent); }
.tab-tools { margin-left: auto; display: flex; align-items: center; gap: 6px; padding-bottom: 4px; }
.toggle { font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 4px; cursor: pointer; }
.tool { font: inherit; font-size: 13px; padding: 3px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--card); color: var(--ink); cursor: pointer; }
.tool:hover { border-color: var(--accent); color: var(--accent); }
.tab-note { margin: 8px 0 0; color: var(--muted); font-size: 13px; }

.pane { margin-top: 10px; max-height: calc(100vh - 320px); min-height: 120px; overflow: auto; }
.pane.source { margin: 10px 0 0; padding: 10px 12px; background: #f3f4f7; border-radius: 6px; font: 12.5px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; white-space: pre-wrap; overflow-wrap: anywhere; }
#pane-text { font-size: 15.5px; }
.line { padding: 1px 6px; border-radius: 4px; white-space: pre-wrap; overflow-wrap: anywhere; cursor: default; }
.line:hover, .line.hot { background: var(--accent-soft); }
.empty { color: var(--muted); font-style: italic; }
.md h3, .md h4, .md h5, .md h6, .md h7, .md h8 { margin: 12px 0 6px; line-height: 1.3; }
.md h3 { font-size: 20px; }
.md h4 { font-size: 17px; }
.md h5, .md h6 { font-size: 15px; }
.md p { margin: 8px 0; white-space: pre-line; }
.md ul { margin: 6px 0; padding-left: 22px; }
.md .page-mark { color: var(--muted); font-size: 12.5px; border-top: 1px solid var(--line); padding-top: 6px; margin-top: 14px; }
.table-wrap { overflow-x: auto; margin: 10px 0; }
.md table { border-collapse: collapse; font-size: 14.5px; }
.md th, .md td { border: 1px solid #c9ced6; padding: 6px 10px; text-align: left; vertical-align: top; }
.md th { background: #eef1f5; font-weight: 700; }
.md tr:nth-child(even) td { background: #fafbfc; }

@media (max-width: 960px) {
  .top { padding: 12px 14px 4px; }
  .top h1 { font-size: 19px; }
  .lede { font-size: 13.5px; }
  main { grid-template-columns: minmax(0, 1fr); gap: 12px; padding: 8px 14px 20px; }
  .drop { padding: 14px; }
  .stage img { max-height: 46vh; }
  .pane { max-height: none; }
  .took { font-size: 26px; }
  /* a PDF's page beside the time, so the page, the time and the top of the result fit one phone screen */
  .result.with-page { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); grid-template-rows: auto 1fr; column-gap: 12px; align-items: start; }
  .result.with-page > .figure { display: contents; }
  .result.with-page .stage { grid-column: 1; grid-row: 1 / span 2; display: block; }
  .result.with-page .stage canvas { max-height: 46vh; }
  .result.with-page .headline { grid-column: 2; grid-row: 1; display: block; }
  .result.with-page figcaption { grid-column: 2; grid-row: 2; margin: 8px 0 0; }
  .result.with-page > :not(.figure):not(.headline) { grid-column: 1 / -1; }
}