:root {
  --bg: #14110f;
  --ink: #f4efe6;
  --muted: #b7a99a;
  --accent: #e8a87c;
  --line: rgba(244, 239, 230, 0.12);
  --font: 'DM Sans', system-ui, sans-serif;
  --display: 'Instrument Serif', Georgia, serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
}
a { color: var(--accent); }
.muted { color: var(--muted); }
.app-home main {
  max-width: 520px;
  margin: 0 auto;
  padding: 3rem 1.25rem;
}
.brand {
  font-family: var(--display);
  font-size: 2.5rem;
  margin: 0;
}
.links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.links a {
  text-decoration: none;
  border: 1px solid var(--line);
  padding: 0.9rem 1rem;
  border-radius: 0.75rem;
  color: var(--ink);
}
.links a:hover { border-color: var(--accent); }

.demo, .admin {
  max-width: 640px;
  margin: 0 auto;
  padding: 1.25rem;
  display: grid;
  gap: 1rem;
}
.chat-log {
  border: 1px solid var(--line);
  border-radius: 1rem;
  min-height: 320px;
  padding: 1rem;
  display: grid;
  gap: 0.5rem;
  align-content: start;
  background: rgba(244,239,230,0.03);
}
.msg {
  max-width: 85%;
  padding: 0.65rem 0.85rem;
  border-radius: 1rem;
  font-size: 0.95rem;
}
.msg.user { justify-self: end; background: rgba(232,168,124,0.22); }
.msg.bot { justify-self: start; background: rgba(244,239,230,0.08); }
.msg-bot-wrap {
  justify-self: start;
  display: grid;
  gap: 0.45rem;
  max-width: 95%;
}
.opt-box {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.opt-btn {
  background: rgba(244, 239, 230, 0.08);
  color: var(--ink);
  border: 1px solid var(--line);
  font-weight: 500;
  font-size: 0.85rem;
  padding: 0.55rem 0.75rem;
  border-radius: 0.65rem;
  cursor: pointer;
  text-align: left;
}
.opt-btn:hover { border-color: var(--accent); }
.opt-row {
  width: 100%;
  display: grid;
  gap: 0.15rem;
}
.opt-row span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 400;
}
.row {
  display: flex;
  gap: 0.5rem;
}
input, textarea, button, select {
  font: inherit;
  border-radius: 0.75rem;
  border: 1px solid var(--line);
  background: rgba(244,239,230,0.04);
  color: var(--ink);
  padding: 0.75rem 0.9rem;
}
button {
  background: linear-gradient(135deg, #e8a87c, #c4784a);
  color: #1a120c;
  border: none;
  font-weight: 600;
  cursor: pointer;
}
.row input { flex: 1; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
th, td {
  border-bottom: 1px solid var(--line);
  padding: 0.55rem 0.35rem;
  text-align: left;
}
.pin-box {
  max-width: 320px;
  display: grid;
  gap: 0.75rem;
}
.error { color: #ff8f7a; }