:root {
  --bg: #0f1115;
  --panel: #161a22;
  --panel-2: #1e232d;
  --border: #262c38;
  --text: #e6e9ef;
  --muted: #8a94a7;
  --accent: #6aa9ff;
  --accent-2: #5cd6a4;
  --user: #ffd479;
  --error: #ff7a7a;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Inter, sans-serif;
  min-height: 100vh;
}

header {
  padding: 28px 32px 12px;
  border-bottom: 1px solid var(--border);
}

header h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.tagline {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

main {
  padding: 24px 32px 64px;
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.connect-bar {
  display: flex;
  align-items: center;
  gap: 16px;
}

button#connect-btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--accent);
  color: #0a0d12;
  font-weight: 600;
  font-size: 14px;
  padding: 10px 18px;
  border-radius: 8px;
  cursor: pointer;
  transition: filter 120ms ease, transform 120ms ease;
}

button#connect-btn:hover { filter: brightness(1.08); }
button#connect-btn:active { transform: translateY(1px); }
button#connect-btn[data-state="connected"] { background: #2a3340; color: var(--text); }
button#connect-btn[disabled] { opacity: 0.6; cursor: not-allowed; }

.status {
  font-size: 12px;
  color: var(--muted);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
}
.status.idle { color: var(--muted); }
.status.connecting { color: var(--accent); }
.status.connected { color: var(--accent-2); border-color: rgba(92, 214, 164, 0.3); }
.status.error { color: var(--error); border-color: rgba(255, 122, 122, 0.4); }

.suggestions {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
}

.suggestions h2 {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.suggestions ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 10px;
}

.suggestion {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.suggestion .sw {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
}

.suggestion .en {
  font-size: 12px;
  color: var(--muted);
}

.suggestion .actions {
  display: flex;
  gap: 6px;
  margin-top: 2px;
}

.suggestion button {
  appearance: none;
  border: 1px solid var(--border);
  background: #232a36;
  color: var(--text);
  font-size: 12px;
  font-weight: 500;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: background 120ms ease, border-color 120ms ease;
}
.suggestion button:hover { background: #2c3543; border-color: #3a4356; }
.suggestion button[disabled] { opacity: 0.5; cursor: not-allowed; }
.suggestion button.send {
  background: var(--accent);
  color: #0a0d12;
  border-color: transparent;
}
.suggestion button.send:hover { filter: brightness(1.08); }

.transcript {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.transcript .col {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
  min-height: 320px;
}

.transcript h2 {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.lines {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.lines li {
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  word-wrap: break-word;
}

#col-you .lines li, .col[id^="col-you"] li { border-left: 3px solid var(--user); }
#col-bot .lines li, .col[id^="col-bot"] li { border-left: 3px solid var(--accent); }

.lines .sw {
  font-size: 15px;
  color: var(--text);
}

.lines .en {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

@media (max-width: 720px) {
  main { padding: 16px; }
  .transcript { grid-template-columns: 1fr; }
}