:root {
  --parchment: #f3e9d2;
  --ink: #3a2e1f;
  --accent: #8b2e2e;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Georgia, 'Times New Roman', serif;
  background: var(--parchment);
  color: var(--ink);
}

header {
  padding: 2rem 1rem 1rem;
  text-align: center;
  border-bottom: 2px solid var(--accent);
}

header h1 { margin: 0; font-size: 2.2rem; }
.subtitle { margin: 0.25rem 0 0; opacity: 0.75; }

main {
  max-width: 700px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

.search-bar {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

#search-input {
  flex: 1;
  padding: 0.6rem 0.8rem;
  font-size: 1rem;
  border: 1px solid var(--ink);
  border-radius: 4px;
  background: #fffaf0;
}

#search-btn, .upload-btn {
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-family: inherit;
}

.doc-card {
  background: #fffaf0;
  border: 1px solid #d8c9a3;
  border-radius: 6px;
  padding: 0.9rem 1rem;
  margin-bottom: 0.75rem;
}

.doc-card h3 { margin: 0 0 0.25rem; }
.doc-card .category {
  display: inline-block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

.doc-card p { margin: 0; line-height: 1.4; }
.doc-card mark { background: #f0d98a; }

.mode-toggle {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.mode-btn {
  flex: 1;
  padding: 0.5rem;
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 4px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.9rem;
}

.mode-btn.active {
  background: var(--accent);
  color: white;
}

.ask-answer { margin-bottom: 1.5rem; }
.answer-card p { margin-bottom: 0.6rem; }

.sources {
  font-size: 0.85rem;
  opacity: 0.85;
}

.source-tag {
  display: inline-block;
  background: #f0e4c4;
  border-radius: 3px;
  padding: 0.1rem 0.4rem;
  margin-right: 0.3rem;
}

.loading { font-style: italic; opacity: 0.7; }

.upload-form {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
  background: #fffaf0;
  border: 1px solid #d8c9a3;
  border-radius: 6px;
  padding: 1rem;
}

.upload-form input {
  padding: 0.5rem 0.7rem;
  border: 1px solid var(--ink);
  border-radius: 4px;
  background: #fffaf0;
  font-family: inherit;
}

.upload-form button {
  align-self: flex-start;
  padding: 0.5rem 1.2rem;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-family: inherit;
}

#upload-status { margin: 0; font-size: 0.9rem; }
#upload-status.success { color: #2e6b3a; }
#upload-status.error { color: var(--accent); }