/* ContextX evidence ledger — brand palette from docs/BRAND.md */
:root {
  --mist: #eff2fd;
  --paper: #ffffff;
  --ink: #16234c;
  --ink-soft: #46527a;
  --rule: #c9d0ea;
  --indigo: #4859f5;
  --indigo-text: #2f3fc4;
  --lime: #b7ed87;
  --target: #e3e7ff;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  background: var(--mist);
  color: var(--ink);
  font: 400 1rem/1.6 var(--sans);
}

a { color: var(--indigo-text); text-underline-offset: 0.2em; }
a:hover { text-decoration-thickness: 2px; }
code { font-family: var(--mono); font-size: 0.9em; }

:focus-visible {
  outline: 3px solid var(--indigo);
  outline-offset: 2px;
}

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  padding: 0.5rem 0.75rem;
  background: var(--ink);
  color: var(--paper);
}
.skip:focus { top: 1rem; }

/* Masthead */
.masthead, .desk, .foot {
  max-width: 72rem;
  margin: 0 auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}
.masthead { padding-block: clamp(2rem, 6vw, 3.5rem) 1.5rem; }

.brand {
  margin: 0 0 1.25rem;
  font: 600 0.95rem/1 var(--mono);
  letter-spacing: 0.02em;
}
.mark { color: var(--indigo); margin-right: 0.35rem; }

h1 {
  max-width: 22ch;
  margin: 0 0 0.75rem;
  font-size: clamp(1.75rem, 4.2vw, 2.75rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
h1 em { font-style: normal; box-shadow: inset 0 -0.32em 0 var(--lime); }

.lede { max-width: 60ch; margin: 0 0 1.25rem; color: var(--ink-soft); font-size: 1.075rem; }

.masthead nav { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; font-weight: 600; }

/* Desk layout */
.desk {
  display: grid;
  gap: 2rem;
  padding-bottom: 3rem;
}
@media (min-width: 56rem) {
  .desk { grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); align-items: start; }
}

h2 {
  margin: 0 0 0.6rem;
  font: 600 0.75rem/1.2 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
h3 { margin: 0; font: 600 0.95rem/1.3 var(--mono); }

/* Query */
.query label { display: block; margin-bottom: 0.35rem; font-weight: 600; }
.query-row { display: flex; gap: 0.5rem; }

input[type="search"], textarea {
  width: 100%;
  min-width: 0;
  border: 1.5px solid var(--ink-soft);
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink);
  font: 1rem/1.5 var(--mono);
}
input[type="search"] { padding: 0.65rem 0.75rem; }
textarea { display: block; padding: 0.65rem 0.75rem; resize: vertical; }

button {
  min-height: 2.75rem;
  padding: 0.5rem 1rem;
  border: 1.5px solid var(--ink);
  border-radius: 6px;
  background: var(--ink);
  color: var(--paper);
  font: 600 0.95rem/1 var(--sans);
  cursor: pointer;
}
button:hover { background: var(--indigo-text); border-color: var(--indigo-text); }
button.quiet, .tries button {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--rule);
}
button.quiet:hover, .tries button:hover { border-color: var(--ink); background: var(--paper); }
button:disabled { opacity: 0.6; cursor: default; }

.tries { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; margin: 0.75rem 0 2rem; }
.tries p { margin: 0; color: var(--ink-soft); font-size: 0.9rem; }
.tries ul { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0; padding: 0; list-style: none; }
.tries button { min-height: 2.25rem; padding: 0.35rem 0.7rem; font: 0.85rem/1 var(--mono); }

/* Results: citation slips */
.status { margin: 0 0 0.75rem; color: var(--ink-soft); font-size: 0.95rem; }
.status:empty { display: none; }

.results { display: grid; gap: 1rem; }

.slip {
  padding: 1rem 1.1rem 0.9rem;
  border: 1px solid var(--rule);
  border-left: 4px solid var(--indigo);
  border-radius: 4px;
  background: var(--paper);
}
.slip header { display: flex; align-items: baseline; gap: 0.6rem; }
.rank { font: 600 0.85rem/1 var(--mono); color: var(--indigo-text); }
.overlap { margin: 0.35rem 0 0.75rem; color: var(--ink-soft); font-size: 0.9rem; }
.slip blockquote {
  margin: 0;
  padding: 0.6rem 0.8rem;
  background: var(--mist);
  border-radius: 4px;
  font: 0.95rem/1.55 var(--mono);
  overflow-wrap: anywhere;
}
.cite {
  margin: 0.75rem 0 0;
  padding-top: 0.6rem;
  border-top: 1px dashed var(--rule);
  font: 0.85rem/1.4 var(--mono);
}
.cite-label { color: var(--ink-soft); }

.empty {
  padding: 1rem 1.1rem;
  border: 1.5px dashed var(--ink-soft);
  border-radius: 4px;
  background: var(--paper);
}
.empty p { margin: 0; }
.empty p + p { margin-top: 0.4rem; color: var(--ink-soft); font-size: 0.95rem; }
.empty-title { font-weight: 600; overflow-wrap: anywhere; }

mark {
  background: var(--lime);
  color: var(--ink);
  border-radius: 2px;
  padding: 0 0.1em;
}

/* Method note */
.method {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  font-size: 0.95rem;
}
.method p { margin: 0 0 0.75rem; max-width: 62ch; }

/* Sources: ledger sheets */
.sources-note { margin: 0 0 0.75rem; color: var(--ink-soft); font-size: 0.9rem; }
#source-list { display: grid; gap: 1rem; }

.sheet {
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--paper);
  overflow: hidden;
}
.sheet-head {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.15rem 0.75rem;
  align-items: center;
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--rule);
  background: linear-gradient(var(--paper), var(--mist));
}
.sheet-head h3 { grid-column: 1; }
.sheet-head .meta { grid-column: 1; margin: 0; font: 0.8rem/1.3 var(--mono); color: var(--ink-soft); }
.sheet-actions { grid-column: 2; grid-row: 1 / span 2; display: flex; gap: 0.4rem; }
.sheet-actions button { min-height: 2.25rem; padding: 0.35rem 0.7rem; font-size: 0.85rem; }

.lines {
  margin: 0;
  padding: 0.5rem 0;
  list-style: none;
  counter-reset: line;
  font: 0.92rem/1.6 var(--mono);
}
.lines li {
  counter-increment: line;
  display: grid;
  grid-template-columns: 3rem 1fr;
  min-height: 1.6em;
  padding-right: 0.9rem;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
  border-left: 3px solid transparent;
}
.lines li::before {
  content: counter(line);
  padding-right: 0.8rem;
  text-align: right;
  color: var(--ink-soft);
  user-select: none;
}
.lines li:target {
  background: var(--target);
  border-left-color: var(--indigo);
}
.lines li:focus { outline: none; }
.lines li:focus-visible { outline: 3px solid var(--indigo); outline-offset: -3px; }
@media (prefers-reduced-motion: no-preference) {
  .lines li:target { animation: cited 1.2s ease-out; }
}
@keyframes cited { from { background: var(--lime); } }

.editor { padding: 0.9rem; border-top: 1px solid var(--rule); background: var(--mist); }
.editor label { display: block; margin-bottom: 0.35rem; font-weight: 600; }
.editor .count { display: block; margin-top: 0.35rem; font: 0.8rem/1.3 var(--mono); color: var(--ink-soft); }
.editor-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.75rem; }

.foot {
  padding-block: 1.5rem 2.5rem;
  border-top: 1px solid var(--rule);
  color: var(--ink-soft);
  font-size: 0.875rem;
}

@media (max-width: 30rem) {
  .query-row { flex-direction: column; }
  .lines li { grid-template-columns: 2.25rem 1fr; }
  .sheet-head { grid-template-columns: 1fr; }
  .sheet-actions { grid-column: 1; grid-row: auto; margin-top: 0.4rem; }
}

@media (forced-colors: active) {
  mark { forced-color-adjust: none; background: Mark; color: MarkText; }
  .lines li:target { border-left-color: Highlight; }
}