:root {
  --bg: #faf7f0;
  --ink: #2b2b26;
  --green: #2f4d3a;
  --brass: #b08d57;
  --border: #e2dccb;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Work Sans", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
}
h1 { font-size: 1.4rem; margin-bottom: 0.2rem; }
.subtitle, .hint { color: #6b6555; font-size: 0.9rem; }

.landing {
  max-width: 560px;
  margin: 4rem auto;
  padding: 2rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  text-align: center;
}
.landing-actions { display: flex; gap: 1rem; justify-content: center; margin: 1.5rem 0; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 0.7rem 1.4rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
}
.btn-primary { background: var(--green); color: #fff; }
.btn-secondary { background: var(--brass); color: #fff; }

.layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
  max-width: 1100px;
  margin: 2rem auto;
  padding: 0 1rem;
}
.layout-single { grid-template-columns: 1fr; max-width: 700px; }

.chat-panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  height: 75vh;
}
.chat-window {
  flex: 1;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.8rem;
  margin: 0.8rem 0;
  background: #fffdf8;
}
.msg { margin-bottom: 0.6rem; padding: 0.5rem 0.8rem; border-radius: 8px; max-width: 80%; white-space: pre-wrap; }
.msg-user { background: var(--green); color: #fff; margin-left: auto; }
.msg-mia { background: #f0ece0; }
.msg-error { background: #fbdede; color: #7a1f1f; }

.chat-form { display: flex; gap: 0.5rem; }
.chat-form input { flex: 1; padding: 0.6rem; border: 1px solid var(--border); border-radius: 6px; }
.chat-form button { padding: 0.6rem 1rem; border: none; border-radius: 6px; background: var(--green); color: #fff; cursor: pointer; }
.chat-form button:disabled { opacity: 0.6; cursor: default; }

.side-panel { display: flex; flex-direction: column; gap: 1rem; }
.side-panel section {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
}
.side-panel h2 { font-size: 1rem; margin: 0 0 0.6rem; }
.list { list-style: none; margin: 0; padding: 0; font-size: 0.85rem; }
.list li { padding: 0.4rem 0; border-bottom: 1px solid var(--border); }
.list li:last-child { border-bottom: none; }
.list .empty { color: #999; }

.error { color: #7a1f1f; }

@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; }
  .chat-panel { height: 60vh; }
}