:root {
  --bg: #f6f5f2;
  --card: #ffffff;
  --ink: #1c1b19;
  --muted: #6b6660;
  --accent: #7a5c3e;
  --border: #e3ddd4;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 16px/1.5 -apple-system, system-ui, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
}
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: .8rem 1.2rem; background: var(--card); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 600; letter-spacing: .01em; }
.user { color: var(--muted); font-size: .9rem; }
.container { max-width: 780px; margin: 2rem auto; padding: 0 1rem; }
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 1.5rem; box-shadow: 0 1px 3px rgba(0,0,0,.04);
}
.card.login { max-width: 360px; margin: 4rem auto; }
h1 { font-size: 1.4rem; margin: 0 0 1rem; }
label { display: block; margin-bottom: .8rem; font-size: .9rem; color: var(--muted); }
input, textarea, select {
  width: 100%; margin-top: .25rem; padding: .6rem .7rem;
  border: 1px solid var(--border); border-radius: 8px; font: inherit; color: var(--ink);
}
button {
  padding: .6rem 1.1rem; border: none; border-radius: 8px;
  background: var(--accent); color: #fff; font: inherit; cursor: pointer;
}
button.link { background: none; color: var(--accent); padding: 0; text-decoration: underline; }
.inline { display: inline; }
.error { color: #b3261e; font-size: .9rem; }
.answer-area { margin-top: 1.2rem; }
.citation { display: block; font-size: .85rem; color: var(--muted); border-left: 3px solid var(--accent); padding-left: .6rem; margin: .3rem 0; }
.badge { display: inline-block; background: #fbe4c8; color: #7a5c3e; padding: .15rem .5rem; border-radius: 6px; font-size: .8rem; }
table.stats { width: 100%; border-collapse: collapse; }
table.stats td { padding: .4rem .6rem; border-bottom: 1px solid var(--border); }