:root {
  color-scheme: light dark;
  --fg: #111;
  --muted: #666;
  --bg: #fafafa;
  --card: #fff;
  --border: #e5e5e5;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #f5f5f5;
    --muted: #a1a1a1;
    --bg: #0a0a0a;
    --card: #141414;
    --border: #262626;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Pretendard, Roboto, sans-serif;
  color: var(--fg);
  background: var(--bg);
}

.wrap {
  text-align: center;
  padding: 24px;
}

h1 {
  font-size: 2.25rem;
  margin: 0 0 40px;
}

.choices {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}

.choice {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 220px;
  padding: 32px 24px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--card);
  text-decoration: none;
  color: var(--fg);
  transition: border-color 0.15s ease;
}

.choice:hover {
  border-color: var(--fg);
}

.choice-title {
  font-size: 1.25rem;
  font-weight: 600;
}

.choice-desc {
  font-size: 0.9rem;
  color: var(--muted);
}

.footer {
  margin-top: 48px;
  font-size: 0.85rem;
}

.footer a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer a:hover {
  color: var(--fg);
  text-decoration: underline;
}

.lang-switch {
  position: absolute;
  top: 24px;
  right: 24px;
  display: flex;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 9999px;
  padding: 3px;
  gap: 2px;
}

.lang-btn {
  background: transparent;
  color: var(--muted);
  border: none;
  padding: 5px 12px;
  border-radius: 9999px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  transition: all 0.15s ease;
}

.lang-btn:hover {
  color: var(--fg);
}

.lang-btn.active {
  background: var(--fg);
  color: var(--bg);
}