:root {
  color-scheme: light dark;
  --canvas: #f3f1ea;
  --surface: #fffdf7;
  --surface-raised: #ffffff;
  --ink: #1d2926;
  --muted: #5c6864;
  --line: #ccd3cd;
  --accent: #0b6b55;
  --accent-strong: #064b3c;
  --accent-soft: #dcefe7;
  --warning: #875300;
  --warning-soft: #fff0ce;
  --error: #9d2b2b;
  --error-soft: #fbe3df;
  --shadow: 0 18px 48px rgb(32 52 45 / 9%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 15% -10%, rgb(78 151 125 / 17%), transparent 34rem),
    var(--canvas);
  color: var(--ink);
  line-height: 1.55;
}

.shell {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgb(255 253 247 / 82%);
  backdrop-filter: blur(12px);
}

.header-layout,
.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.header-layout {
  min-height: 8.5rem;
  padding-block: 1.5rem;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: 18ch;
  margin-bottom: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 0.98;
}

h2 {
  margin-bottom: 0.7rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.45rem, 3vw, 2.15rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.12;
}

.eyebrow {
  margin-bottom: 0.55rem;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.header-note,
.field-help,
.evidence-count,
.site-footer {
  color: var(--muted);
  font-size: 0.9rem;
}

.header-note {
  max-width: 22ch;
  margin-bottom: 0;
  text-align: right;
}

main {
  padding-block: clamp(2rem, 5vw, 4rem);
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, 0.42fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: end;
  margin-bottom: 2rem;
}

.intro > div > p {
  max-width: 67ch;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.limitation {
  margin-bottom: 0;
  padding-left: 1rem;
  border-left: 3px solid var(--warning);
  color: var(--warning);
  font-size: 0.92rem;
}

.query-panel,
.result-summary,
.evidence-section {
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.query-panel {
  padding: clamp(1.25rem, 4vw, 2.25rem);
}

label {
  display: block;
  margin-bottom: 0.45rem;
  font-weight: 700;
}

textarea,
select,
input,
button {
  font: inherit;
}

textarea,
select,
input {
  width: 100%;
  border: 1px solid #9faaa4;
  border-radius: 0.58rem;
  background: var(--surface-raised);
  color: var(--ink);
}

textarea {
  min-height: 8rem;
  padding: 0.9rem 1rem;
  resize: vertical;
  font-size: 1.05rem;
  line-height: 1.5;
}

select,
input {
  min-height: 2.85rem;
  padding: 0.6rem 0.75rem;
}

.field-help {
  margin: 0.55rem 0 1rem;
}

.advanced-controls {
  margin-top: 1.25rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding-block: 1rem;
}

.advanced-controls summary {
  width: max-content;
  cursor: pointer;
  color: var(--accent-strong);
  font-weight: 750;
}

.control-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) 8rem;
  gap: 1rem;
  margin-top: 1rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

button {
  min-height: 2.9rem;
  padding: 0.7rem 1.1rem;
  border: 1px solid transparent;
  border-radius: 0.58rem;
  cursor: pointer;
  font-weight: 760;
  transition: transform 120ms ease, background-color 120ms ease;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
}

button:disabled {
  cursor: wait;
  opacity: 0.58;
}

.primary {
  background: var(--accent);
  color: #ffffff;
}

.primary:hover:not(:disabled) {
  background: var(--accent-strong);
}

.secondary {
  border-color: var(--accent);
  background: transparent;
  color: var(--accent-strong);
}

:focus-visible {
  outline: 3px solid #d99000;
  outline-offset: 3px;
}

.request-status {
  min-height: 1.6rem;
  margin: 1rem 0;
  color: var(--muted);
  font-weight: 650;
}

.request-status[data-state="error"] {
  color: var(--error);
}

.capability-status {
  min-height: 1.4rem;
  margin: 0.5rem 0 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.capability-status[data-state="error"] {
  color: var(--warning);
}

.showcase-link {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--accent-strong);
  font-weight: 700;
}

.result-summary {
  margin-bottom: 1.25rem;
  padding: clamp(1.25rem, 4vw, 2.25rem);
}

.result-summary[data-state="insufficient"] {
  border-color: #d5ad5e;
  background: var(--warning-soft);
}

.result-summary[data-state="error"] {
  border-color: #df9e94;
  background: var(--error-soft);
}

.answer-text {
  max-width: 75ch;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  white-space: pre-wrap;
}

.result-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.5rem;
  margin: 1rem 0 0;
}

.result-meta div {
  display: grid;
  gap: 0.1rem;
}

.result-meta dt {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.result-meta dd {
  margin: 0;
  font-size: 0.9rem;
}

.citation-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.citation {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.86rem;
  font-weight: 750;
  text-decoration: none;
}

.evidence-section {
  padding: clamp(1.25rem, 4vw, 2.25rem);
}

.evidence-count {
  margin-bottom: 0;
  text-align: right;
}

.evidence-list {
  display: grid;
  gap: 1rem;
  margin-top: 1.25rem;
}

.evidence-card {
  scroll-margin-top: 1rem;
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--surface-raised);
}

.evidence-card:target {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.evidence-heading {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
}

.evidence-heading h3 {
  margin: 0;
  font-size: 1.05rem;
}

.document-id,
.score {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.78rem;
}

.context-count {
  margin: 0.85rem 0 0;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
}

.evidence-passage + .evidence-passage {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.evidence-passage h4 {
  margin: 0 0 0.35rem;
  font-size: 0.86rem;
}

.evidence-text {
  margin: 1rem 0 0;
  white-space: pre-wrap;
}

.site-footer {
  padding-block: 2rem;
  border-top: 1px solid var(--line);
}

.site-footer p,
.noscript {
  margin-bottom: 0;
}

@media (max-width: 760px) {
  .header-layout,
  .section-heading,
  .evidence-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.75rem;
  }

  .header-note,
  .evidence-count {
    max-width: none;
    text-align: left;
  }

  .intro,
  .control-grid {
    grid-template-columns: 1fr;
  }

  .intro {
    gap: 1.25rem;
  }

  .field-limit {
    max-width: 10rem;
  }

  .actions button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --canvas: #101815;
    --surface: #17221e;
    --surface-raised: #1d2a25;
    --ink: #eef5f0;
    --muted: #b2c1ba;
    --line: #405048;
    --accent: #72d5ae;
    --accent-strong: #a0e8cc;
    --accent-soft: #203f34;
    --warning: #f0c46d;
    --warning-soft: #3b301c;
    --error: #ffaaa1;
    --error-soft: #402724;
    --shadow: 0 18px 48px rgb(0 0 0 / 24%);
  }

  .site-header {
    background: rgb(23 34 30 / 88%);
  }

  textarea,
  select,
  input {
    border-color: #66776f;
  }
}