:root {
  --bg: #f6f5f1;
  --surface: #ffffff;
  --surface-2: #f1efe9;
  --ink: #1b1c20;
  --ink-2: #474a52;
  --ink-3: #6b6e77;
  --line: #e3e0d7;
  --accent: #a85f00;
  --accent-strong: #8a4d00;
  --accent-ink: #ffffff;
  --mark: #ffe08a;
  --focus: #2a63f5;
  --pdf: #b4232c;
  --scan: #6c3fc4;
  --docx: #1f5fbf;
  --xlsx: #1d7a46;
  --markdown: #4b5563;
  --shadow: 0 1px 2px rgb(20 20 30 / 6%), 0 4px 18px rgb(20 20 30 / 5%);
  --radius: 14px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1013;
    --surface: #16171b;
    --surface-2: #1d1f24;
    --ink: #ecebe6;
    --ink-2: #c4c3bd;
    --ink-3: #96958f;
    --line: #2a2c33;
    --accent: #f2b84b;
    --accent-strong: #f7cb72;
    --accent-ink: #16171b;
    --mark: rgb(242 184 75 / 34%);
    --focus: #7aa2ff;
    --pdf: #f07a80;
    --scan: #b79cff;
    --docx: #7fb0ff;
    --xlsx: #6fd39b;
    --markdown: #b3b9c4;
    --shadow: 0 1px 2px rgb(0 0 0 / 40%);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0f1013;
  --surface: #16171b;
  --surface-2: #1d1f24;
  --ink: #ecebe6;
  --ink-2: #c4c3bd;
  --ink-3: #96958f;
  --line: #2a2c33;
  --accent: #f2b84b;
  --accent-strong: #f7cb72;
  --accent-ink: #16171b;
  --mark: rgb(242 184 75 / 34%);
  --focus: #7aa2ff;
  --pdf: #f07a80;
  --scan: #b79cff;
  --docx: #7fb0ff;
  --xlsx: #6fd39b;
  --markdown: #b3b9c4;
  --shadow: 0 1px 2px rgb(0 0 0 / 40%);
  color-scheme: dark;
}

* { box-sizing: border-box; }

/* class rules that set display would otherwise override the hidden attribute */
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.55 var(--font);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--accent); text-underline-offset: 2px; }
a:hover { color: var(--accent-strong); }

:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 6px; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip { position: absolute; left: -999px; top: 8px; background: var(--surface); padding: 8px 12px; border-radius: 8px; z-index: 10; }
.skip:focus { left: 8px; }

/* --- header ------------------------------------------------------------------------------------- */

.top {
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: 1180px;
  width: 100%;
  margin: 0 auto;
  padding: 18px 20px 6px;
}

.brand { display: flex; align-items: center; gap: 9px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 20px; letter-spacing: -0.01em; }
.brand:hover { color: var(--ink); }
.logo { width: 28px; height: 28px; fill: var(--accent); stroke: var(--accent); stroke-width: 2.3; stroke-linecap: round; }
.tagline { margin: 0; color: var(--ink-3); font-size: 14px; }
.top-links { margin-left: auto; display: flex; align-items: center; gap: 16px; font-size: 14px; }
.top-links a { color: var(--ink-2); text-decoration: none; }
.top-links a:hover { color: var(--ink); text-decoration: underline; }

.icon-button {
  display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink-2); cursor: pointer;
}
.icon-button svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.icon-button:hover { color: var(--ink); }

/* --- search ------------------------------------------------------------------------------------- */

main { flex: 1; width: 100%; max-width: 1180px; margin: 0 auto; padding: 8px 20px 40px; }

.search-panel { padding: 18px 0 8px; }

.search-box {
  display: flex; align-items: center; gap: 10px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px;
  padding: 6px 6px 6px 16px; box-shadow: var(--shadow);
}
.search-box:focus-within { border-color: var(--accent); }
.search-box svg { width: 20px; height: 20px; flex: none; fill: none; stroke: var(--ink-3); stroke-width: 2; stroke-linecap: round; }
.search-box input {
  flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--ink);
  font: inherit; font-size: 17px; padding: 10px 0;
}
.search-box input::placeholder { color: var(--ink-3); }
.search-box input::-webkit-search-cancel-button { filter: grayscale(1); }

.primary {
  border: 0; border-radius: 11px; background: var(--accent); color: var(--accent-ink);
  font: inherit; font-weight: 650; padding: 10px 18px; cursor: pointer;
}
.primary:hover { background: var(--accent-strong); }

.controls { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 14px; }

.segmented { display: inline-flex; background: var(--surface-2); border: 1px solid var(--line); border-radius: 11px; padding: 3px; }
.segmented button {
  border: 0; background: transparent; color: var(--ink-2); font: inherit; font-size: 14px;
  padding: 6px 12px; border-radius: 8px; cursor: pointer;
}
.segmented button[aria-checked="true"] { background: var(--surface); color: var(--ink); font-weight: 600; box-shadow: var(--shadow); }

select {
  font: inherit; font-size: 14px; color: var(--ink); background: var(--surface);
  border: 1px solid var(--line); border-radius: 10px; padding: 7px 10px; max-width: 100%;
}

.toggle { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--ink-2); cursor: pointer; }
.toggle input { accent-color: var(--accent); width: 16px; height: 16px; }

.pill {
  border: 1px solid var(--line); background: var(--surface); color: var(--ink-2);
  font: inherit; font-size: 13px; padding: 6px 12px; border-radius: 999px; cursor: pointer;
}
.pill[data-state="ready"] { color: var(--xlsx); border-color: color-mix(in srgb, var(--xlsx) 40%, var(--line)); cursor: default; }
.pill[data-state="loading"] { cursor: progress; }
.pill:disabled { opacity: 1; }

.examples-row { display: flex; align-items: baseline; gap: 10px; margin-top: 14px; }
.examples-row > span { color: var(--ink-3); font-size: 13px; flex: none; }
.examples { display: flex; flex-wrap: wrap; gap: 6px; }
.example {
  border: 1px solid var(--line); background: transparent; color: var(--ink-2);
  font: inherit; font-size: 13px; padding: 4px 10px; border-radius: 999px; cursor: pointer;
}
.example:hover { color: var(--ink); border-color: var(--accent); }

.status { min-height: 1.5em; margin: 14px 0 0; color: var(--ink-3); font-size: 14px; }

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

.layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 24px; align-items: start; margin-top: 8px; }
.side { display: grid; gap: 16px; position: sticky; top: 16px; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow); }
.card h2 { margin: 0 0 10px; font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-3); }
.note { color: var(--ink-3); font-size: 13px; margin: 10px 0 0; }

.answer { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); }
.answer p:first-of-type { margin: 0; }
.cite { font-weight: 650; text-decoration: none; }

.corpus { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.corpus li { display: grid; grid-template-columns: auto 1fr; column-gap: 8px; align-items: baseline; font-size: 14px; }
.doc-title { color: var(--ink); }
.doc-facts { grid-column: 2; color: var(--ink-3); font-size: 12.5px; }

.how ol { margin: 10px 0 0; padding-left: 20px; color: var(--ink-2); font-size: 14px; display: grid; gap: 6px; }
.engine-line { margin: 0; font-size: 13px; color: var(--ink-2); font-family: var(--mono); line-height: 1.5; }

/* --- results ------------------------------------------------------------------------------------ */

.results { display: grid; gap: 14px; }
.hint { color: var(--ink-2); margin: 6px 0; max-width: 60ch; }

.hit { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow); scroll-margin-top: 16px; }
.hit:target { border-color: var(--accent); }
.hit-head { display: flex; align-items: baseline; gap: 10px; }
.hit-head h3 { margin: 0; font-size: 16px; line-height: 1.35; font-weight: 650; }
.rank {
  flex: none; display: inline-grid; place-items: center; min-width: 24px; height: 24px; padding: 0 6px;
  border-radius: 7px; background: var(--surface-2); color: var(--ink-2); font-size: 13px; font-weight: 650;
}
.where { margin: 6px 0 0; color: var(--accent); font-size: 13.5px; font-weight: 550; }
.text { margin: 8px 0 0; color: var(--ink-2); white-space: pre-line; overflow-wrap: anywhere; }
mark { background: var(--mark); color: inherit; border-radius: 3px; padding: 0 1px; }

.badge {
  flex: none; font-size: 11.5px; font-weight: 700; letter-spacing: 0.02em; padding: 2px 7px; border-radius: 6px;
  border: 1px solid currentColor; line-height: 1.5; color: var(--markdown);
}
.badge.pdf { color: var(--pdf); }
.badge.scan { color: var(--scan); }
.badge.docx { color: var(--docx); }
.badge.xlsx, .badge.csv { color: var(--xlsx); }

.hit-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: 12px; }
.chip { font-family: var(--mono); font-size: 12px; color: var(--ink-3); background: var(--surface-2); border-radius: 6px; padding: 2px 7px; }
.chip.ocr { color: var(--scan); }
.actions { margin-left: auto; display: flex; flex-wrap: wrap; gap: 14px; }
.link { border: 0; background: none; padding: 0; color: var(--accent); font: inherit; font-size: 13.5px; cursor: pointer; text-decoration: none; }
.link:hover { text-decoration: underline; }

/* --- viewer ------------------------------------------------------------------------------------- */

dialog {
  width: min(760px, calc(100vw - 32px)); max-height: calc(100vh - 64px); padding: 0;
  border: 1px solid var(--line); border-radius: 16px; background: var(--surface); color: var(--ink);
}
dialog::backdrop { background: rgb(10 10 14 / 55%); }
dialog > header { display: flex; justify-content: space-between; gap: 16px; padding: 18px 20px 10px; border-bottom: 1px solid var(--line); }
dialog h2 { margin: 0; font-size: 17px; }
.viewer-body { padding: 8px 20px; overflow: auto; max-height: 60vh; }
.viewer-body p { white-space: pre-line; overflow-wrap: anywhere; }
.viewer-body .around { color: var(--ink-3); font-size: 14.5px; }
.viewer-body .current { border-left: 3px solid var(--accent); padding-left: 12px; }
dialog > footer { padding: 10px 20px 18px; }

/* --- footer ------------------------------------------------------------------------------------- */

.bottom { border-top: 1px solid var(--line); color: var(--ink-3); font-size: 13px; }
.bottom p { max-width: 1180px; margin: 0 auto; padding: 16px 20px 24px; }

@media (max-width: 920px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
  .side { position: static; }
}

@media (max-width: 600px) {
  .top { flex-wrap: wrap; padding: 14px 16px 0; }
  .tagline { order: 3; width: 100%; }
  main { padding: 4px 16px 32px; }
  .search-box { padding-left: 12px; }
  .search-box input { font-size: 16px; }
  .primary { padding: 10px 14px; }
  .examples-row { flex-direction: column; gap: 6px; }
  /* one swipeable row, so the results stay near the top of the screen */
  .examples { flex-wrap: nowrap; overflow-x: auto; width: 100%; padding-bottom: 4px; scrollbar-width: none; }
  .examples::-webkit-scrollbar { display: none; }
  .example { flex: none; }
  .hit, .card { padding: 14px; }
  .actions { margin-left: 0; width: 100%; }
}

@media (prefers-reduced-motion: no-preference) {
  .hit { animation: rise 0.18s ease-out both; }
  @keyframes rise { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
}