:root {
  --bg: #17151c;
  --fg: #f2eee8;
  --muted: #9a93a3;
  --accent: #e2483d;
  --card: #241f2b;
  --zh: #ffd36b;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-tap-highlight-color: transparent;
}
section {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: max(16px, env(safe-area-inset-top)) 16px max(16px, env(safe-area-inset-bottom));
}
[hidden] { display: none !important; }

#login { justify-content: center; gap: 8px; text-align: center; }
#login form { display: flex; gap: 8px; width: 100%; max-width: 360px; }
#login input {
  flex: 1; min-width: 0; padding: 12px; border-radius: 10px; border: 1px solid #3a3342;
  background: var(--card); color: var(--fg); font-size: 16px;
}
button {
  font: inherit; color: var(--fg); background: var(--card);
  border: 1px solid #3a3342; border-radius: 10px; padding: 12px 16px; cursor: pointer;
}
.error { color: var(--accent); min-height: 1.4em; }

.face { font-size: 112px; line-height: 1; margin-top: 6vh; transition: transform .15s; }
.face.pulse { animation: pulse 1.2s ease-in-out infinite; }
@keyframes pulse { 50% { transform: scale(1.08); } }
#status { color: var(--muted); margin: 12px 0; min-height: 1.4em; text-align: center; }

#progress { width: 100%; max-width: 360px; height: 8px; border-radius: 4px; background: var(--card); overflow: hidden; }
#progress-bar { height: 100%; width: 0; background: var(--zh); transition: width .4s linear; }

#log {
  flex: 1; width: 100%; max-width: 520px; overflow-y: auto;
  display: flex; flex-direction: column; gap: 10px; padding: 8px 0;
}
.me { align-self: flex-end; background: var(--card); padding: 8px 12px; border-radius: 12px 12px 2px 12px; max-width: 85%; }
.me small { display: block; color: var(--muted); font-size: 12px; }
.zh { align-self: flex-start; padding: 4px 2px; }
.zh .hanzi { font-size: 30px; color: var(--zh); }
.zh .pinyin { color: var(--fg); }
.zh .ru { color: var(--muted); font-size: 14px; }

.big {
  width: 100%; max-width: 360px; padding: 18px; font-size: 20px; border-radius: 16px;
  background: var(--accent); border: none;
}
.big.on { background: var(--card); border: 1px solid #3a3342; }

#menu { position: absolute; top: max(12px, env(safe-area-inset-top)); right: 12px; padding: 6px 12px; font-size: 20px; }
#menu-panel { position: absolute; top: 60px; right: 12px; }