:root {
  --bg: #0b0b0f;
  --panel: #121826;
  --text: #e7eaf0;
  --muted: #9aa4b2;
  --border: #263043;
  --mine: #1f2937;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 12px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
}

.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row > * { flex: 0 0 auto; }

input, button {
  border-radius: 12px;
  border: 1px solid var(--border);
  padding: 10px 12px;
  background: #0e1422;
  color: var(--text);
}

input { min-width: 180px; }
button { cursor: pointer; }
button.danger { border-color: #7f1d1d; }
small { color: var(--muted); }

#chat {
  height: 68vh;
  overflow: auto;
  padding: 8px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,0.15);
}

.msg {
  display: flex;
  margin: 8px 0;
  gap: 10px;
}

.bubble {
  max-width: 78%;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #0e1422;
  white-space: pre-wrap;
  word-break: break-word;
}

.meta { color: var(--muted); font-size: 12px; margin-top: 3px; }

.msg.mine { justify-content: flex-end; }
.msg.mine .bubble { background: var(--mine); }

.toolbar {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 10px;
}

.grow { flex: 1 1 auto; min-width: 220px; }

@media (max-width: 640px) {
  .container { padding: 8px; }
  #chat { height: 62vh; }
  input { width: 100%; min-width: 0; }
  .row, .toolbar { flex-direction: column; align-items: stretch; }
  .bubble { max-width: 92%; }
}