:root {
  --bg: var(--tg-theme-bg-color, #0c0c0d);
  --fg: var(--tg-theme-text-color, #f4f4f5);
  --muted: var(--tg-theme-hint-color, #8a8a93);
  --card: var(--tg-theme-secondary-bg-color, #18181b);
  --accent: var(--tg-theme-button-color, #e8e4dc);
  --accent-fg: var(--tg-theme-button-text-color, #111);
  --safe-b: env(safe-area-inset-bottom);
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--fg);
}

.app {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  padding: 16px 16px calc(72px + var(--safe-b));
}

.top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 18px;
}
.brand {
  font-size: 13px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  font-weight: 600;
}
.status {
  font-size: 12px;
  color: var(--muted);
}

.panel { flex: 1; display: flex; flex-direction: column; min-height: 0; }
.hidden { display: none; }

.thread {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-bottom: 12px;
}
.bubble {
  max-width: 88%;
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 15px;
  line-height: 1.4;
  white-space: pre-wrap;
}
.bubble.bot { background: var(--card); align-self: flex-start; }
.bubble.me { background: var(--accent); color: var(--accent-fg); align-self: flex-end; }
.bubble.wait { color: var(--muted); }

.composer {
  display: flex;
  gap: 8px;
}
.composer input {
  flex: 1;
  border: 0;
  border-radius: 14px;
  padding: 12px 14px;
  background: var(--card);
  color: var(--fg);
  font-size: 16px;
  outline: none;
}
.composer button {
  width: 44px;
  border: 0;
  border-radius: 14px;
  background: var(--accent);
  color: var(--accent-fg);
  font-size: 18px;
}

.lead { color: var(--muted); font-size: 15px; line-height: 1.45; }
.card {
  background: var(--card);
  border-radius: 16px;
  padding: 16px;
  margin-top: 12px;
}
.label { font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
code {
  display: block;
  font-size: 12px;
  word-break: break-all;
  line-height: 1.4;
  margin-bottom: 12px;
}
.devices { margin: 0; padding-left: 18px; font-size: 14px; line-height: 1.7; }
.hint { font-size: 13px; color: var(--muted); margin: 10px 0 0; }

.btn {
  width: 100%;
  border: 0;
  border-radius: 14px;
  padding: 13px;
  font-size: 15px;
  font-weight: 600;
  background: var(--accent);
  color: var(--accent-fg);
}
.btn.danger { background: #2a2220; color: #f0d9d4; }

.tabs {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  padding: 8px 12px calc(8px + var(--safe-b));
  background: var(--bg);
  border-top: 1px solid rgba(255,255,255,0.06);
}
.tabs button {
  border: 0;
  background: none;
  color: var(--muted);
  font-size: 13px;
  padding: 10px;
}
.tabs button.on { color: var(--fg); font-weight: 600; }