:root {
  color-scheme: dark;
  --bg: #16081d;
  --card: rgba(255,255,255,0.065);
  --card2: rgba(255,255,255,0.095);
  --border: rgba(255,255,255,0.13);
  --text: #fff7fb;
  --muted: rgba(255,255,255,0.68);
  --pink: #ff4fb8;
  --violet: #8b5cf6;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% 0%, rgba(255,79,184,0.16), transparent 35%), radial-gradient(circle at 90% 20%, rgba(139,92,246,0.14), transparent 35%), var(--bg);
}
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button, .catalog-link, .side-button {
  border: 0;
  border-radius: 999px;
  padding: 12px 16px;
  background: linear-gradient(135deg, var(--pink), var(--violet));
  color: white;
  font-weight: 800;
  cursor: pointer;
}
.chat-shell {
  width: min(100%, 1180px);
  margin: 0 auto;
  padding: 18px;
}
.chat-header, .identity-card, .rooms-card, .conversation-card, .side-card {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 28px;
  box-shadow: 0 24px 70px rgba(0,0,0,0.28);
}
.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 24px;
  margin-bottom: 16px;
  background: radial-gradient(circle at 90% 0%, rgba(255,79,184,0.22), transparent 35%), var(--card);
}
.eyebrow {
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: 12px;
  color: rgba(255,255,255,0.56);
  font-weight: 900;
}
h1, h2, h3, p { margin-top: 0; }
.chat-header h1 { margin-bottom: 8px; font-size: clamp(28px, 5vw, 46px); }
.chat-header p, .hint, .side-card p { color: var(--muted); line-height: 1.55; }
.identity-card { padding: 18px; margin-bottom: 16px; }
.pseudo-row { display: grid; gap: 10px; }
input, textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: #2c1536;
  color: var(--text);
  padding: 13px 14px;
  outline: none;
}
textarea { min-height: 92px; resize: vertical; }
.chat-layout { display: grid; gap: 14px; }
.rooms-card, .conversation-card, .side-card { padding: 16px; }
.rooms-card { display: flex; gap: 8px; overflow-x: auto; }
.room {
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--border);
  white-space: nowrap;
}
.room.active { background: linear-gradient(135deg, rgba(255,79,184,0.55), rgba(139,92,246,0.42)); }
.conversation-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; }
#refresh { background: rgba(255,255,255,0.08); border: 1px solid var(--border); }
.messages {
  min-height: 340px;
  max-height: 56vh;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 10px 4px 12px;
}
.empty { color: var(--muted); text-align: center; padding: 52px 10px; }
.message {
  max-width: 88%;
  padding: 12px 14px;
  border-radius: 18px;
  background: var(--card2);
  border: 1px solid var(--border);
}
.message.mine { align-self: flex-end; background: linear-gradient(135deg, rgba(255,79,184,0.3), rgba(139,92,246,0.24)); }
.message strong { display: block; margin-bottom: 5px; font-size: 13px; }
.message p { margin: 0; line-height: 1.45; }
.message small { display: block; color: rgba(255,255,255,0.45); margin-top: 5px; }
.composer { display: grid; gap: 10px; border-top: 1px solid var(--border); padding-top: 12px; }
.side-button { display: inline-block; margin-top: 10px; }
@media (min-width: 760px) {
  .pseudo-row { grid-template-columns: 1fr auto; }
}
@media (min-width: 980px) {
  .chat-layout { grid-template-columns: 220px 1fr 260px; align-items: start; }
  .rooms-card { flex-direction: column; overflow: visible; }
  .room { width: 100%; text-align: left; }
}