:root {
  --bg: #f5f3ef;
  --ink: #121619;
  --muted: #4b5563;
  --surface: #fffdf7;
  --line: #d8d2c8;
  --accent: #0077b6;
  --accent-2: #d62828;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Avenir Next", "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 10% 10%, #fffaf0, var(--bg) 40%);
}

.shell {
  max-width: 900px;
  margin: 3rem auto;
  padding: 0 1rem 3rem;
}

header h1 {
  margin: 0.15rem 0 0.5rem;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
}

.eyebrow {
  margin: 0;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.78rem;
}

.sub {
  margin: 0 0 1.25rem;
  color: var(--muted);
}

.ask-form {
  display: grid;
  gap: 0.5rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
}

label {
  font-size: 0.92rem;
  font-weight: 600;
}

textarea {
  width: 100%;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.8rem;
  font: inherit;
}

button {
  justify-self: start;
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 8px;
  padding: 0.65rem 1rem;
  font-weight: 600;
  cursor: pointer;
}

.card {
  margin-top: 1rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
}

.card h2 {
  margin-top: 0;
}

.error {
  border-left: 6px solid var(--accent-2);
}

pre {
  white-space: pre-wrap;
  font-family: "IBM Plex Sans", "Avenir Next", "Segoe UI", sans-serif;
  margin: 0;
}

.sources {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.sources li {
  border-top: 1px dashed var(--line);
  padding-top: 0.9rem;
}

.meta {
  font-size: 0.82rem;
  color: var(--muted);
}

.section {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 600;
  margin-top: 0.25rem;
}

p {
  margin-bottom: 0;
}

.sample-queries {
  margin-top: 1rem;
}

.sample-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.sample-form {
  margin: 0;
}

.sample-btn {
  background: #f7fbff;
  color: var(--accent);
  border: 1px solid rgba(0, 119, 182, 0.35);
  border-radius: 999px;
  padding: 0.45rem 0.8rem;
  font-size: 0.9rem;
  text-align: left;
}

.sample-btn:hover {
  background: #eef7ff;
}

.results-layout {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 1rem;
  align-items: start;
}

.results-layout .card {
  margin-top: 0;
}

.source-actions {
  margin-top: 0.5rem;
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.source-actions a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

.source-actions a:hover {
  text-decoration: underline;
}

.inline-open {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.35rem 0.65rem;
}

.viewer-card {
  position: sticky;
  top: 1rem;
}

.viewer-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
}

.viewer-head a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

.viewer-head a:hover {
  text-decoration: underline;
}

#pdfViewerFrame {
  width: 100%;
  height: 72vh;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

@media (max-width: 980px) {
  .results-layout {
    grid-template-columns: 1fr;
  }

  .viewer-card {
    position: static;
  }

  #pdfViewerFrame {
    height: 60vh;
  }
}