* { box-sizing: border-box; }
:root {
  --bg: #0f1115;
  --panel: #161a22;
  --panel-2: #1d2230;
  --border: #2a3142;
  --text: #e7eaf0;
  --muted: #8d96a8;
  --accent: #6ea8ff;
  --accent-2: #8ee0a1;
  --user: #2d3a55;
  --bot: #232a3a;
  --danger: #ff7b7b;
  --record: #ff5d5d;
}
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
header { padding: 32px 24px 16px; text-align: center; }
header h1 { margin: 0 0 4px; font-size: 28px; letter-spacing: -0.02em; }
.tagline { margin: 0; color: var(--muted); }
main { max-width: 960px; margin: 0 auto; padding: 16px 24px 48px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
  margin-top: 16px;
}
.topic-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
  text-align: left;
  color: inherit;
  font: inherit;
}
.topic-card:hover { transform: translateY(-2px); border-color: var(--accent); background: var(--panel-2); }
.topic-card h3 { margin: 0 0 8px; font-size: 17px; }
.topic-card p { margin: 0; color: var(--muted); font-size: 14px; }
.stance {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.06em;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(110, 168, 255, 0.16);
  color: var(--accent);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.chat-header { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 16px; }
.chat-header .topic-meta h2 { margin: 4px 0; font-size: 20px; }
.chat-header .topic-meta p { margin: 0; color: var(--muted); font-size: 14px; }
.ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
}
.ghost:hover { color: var(--text); border-color: var(--accent); }

.settings {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 12px;
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.setting { display: flex; flex-direction: column; gap: 6px; flex: 1 1 240px; }
.setting-label {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.setting-hint { margin: 0; color: var(--muted); font-size: 12px; min-height: 1em; }
.seg {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.seg button {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 14px;
  cursor: pointer;
  transition: border-color 120ms, background 120ms;
}
.seg button:hover:not([aria-pressed="true"]) {
  border-color: var(--accent);
}
.seg button[aria-pressed="true"] {
  background: var(--accent);
  color: #0b1220;
  border-color: var(--accent);
  font-weight: 600;
}
.seg button:disabled { opacity: 0.5; cursor: not-allowed; }

.live-panel {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.mic {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--accent);
  color: #0b1220;
  border: 0;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  font-size: 15px;
  transition: background 150ms;
}
.mic:disabled { opacity: 0.6; cursor: not-allowed; }
.mic .mic-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(11,18,32,0.55);
}
.mic[aria-pressed="true"] {
  background: var(--record);
  color: #fff;
}
.mic[aria-pressed="true"] .mic-dot {
  background: #fff;
  box-shadow: 0 0 0 0 rgba(255,255,255,0.7);
  animation: pulse 1.4s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(255,255,255,0.7); }
  70%  { box-shadow: 0 0 0 10px rgba(255,255,255,0); }
  100% { box-shadow: 0 0 0 0 rgba(255,255,255,0); }
}
.status { color: var(--muted); font-size: 14px; }
.status.speaking { color: var(--accent-2); }
.status.error { color: var(--danger); }

.messages {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  min-height: 240px;
  max-height: 50vh;
  overflow-y: auto;
}
.msg {
  padding: 10px 12px;
  border-radius: 10px;
  white-space: pre-wrap;
  word-wrap: break-word;
  max-width: 88%;
  font-size: 15px;
}
.msg.user { background: var(--user); align-self: flex-end; }
.msg.bot { background: var(--bot); align-self: flex-start; }
.msg.bot.streaming::after {
  content: "▍";
  color: var(--accent);
  margin-left: 2px;
  animation: blink 1s steps(2, start) infinite;
}
@keyframes blink { to { visibility: hidden; } }
.msg.error {
  background: rgba(255, 123, 123, 0.12);
  color: var(--danger);
  align-self: stretch;
  max-width: 100%;
}
.msg .label {
  display: block;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.6;
  margin-bottom: 4px;
}

.text-fallback {
  margin-top: 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 12px;
  background: var(--panel);
}
.text-fallback summary {
  cursor: pointer;
  color: var(--muted);
  font-size: 14px;
}
.composer { display: flex; gap: 8px; margin-top: 10px; }
.composer textarea {
  flex: 1;
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px;
  font: inherit;
  resize: vertical;
}
.composer textarea:focus { outline: none; border-color: var(--accent); }
.composer button {
  background: var(--accent);
  color: #0b1220;
  border: 0;
  border-radius: 10px;
  padding: 0 18px;
  font-weight: 600;
  cursor: pointer;
}
.composer button:disabled { opacity: 0.5; cursor: not-allowed; }