:root {
  color-scheme: light dark;
  --bg: var(--tg-theme-bg-color, #0f1419);
  --fg: var(--tg-theme-text-color, #e7ecf1);
  --hint: var(--tg-theme-hint-color, #8b98a5);
  --btn: var(--tg-theme-button-color, #2aabee);
  --btn-fg: var(--tg-theme-button-text-color, #fff);
  --field: var(--tg-theme-secondary-bg-color, #1c242c);
  --ok: #3dd68c;
  --err: #f07178;
  font-family: "SF Pro Text", "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--fg);
}

.wrap {
  max-width: 28rem;
  margin: 0 auto;
  padding: 1.25rem 1rem 2rem;
}

h1 {
  font-size: 1.35rem;
  font-weight: 650;
  margin: 0 0 0.5rem;
}

.hint {
  color: var(--hint);
  font-size: 0.9rem;
  line-height: 1.4;
  margin: 0 0 1.25rem;
}

label {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 0.85rem;
  color: var(--hint);
}

input {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.75rem 0.85rem;
  border: 1px solid transparent;
  border-radius: 10px;
  background: var(--field);
  color: var(--fg);
  font-size: 1rem;
}

input:focus {
  outline: 2px solid var(--btn);
  outline-offset: 1px;
}

button {
  width: 100%;
  margin-top: 0.5rem;
  padding: 0.85rem 1rem;
  border: 0;
  border-radius: 10px;
  background: var(--btn);
  color: var(--btn-fg);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.status {
  margin-top: 1rem;
  font-size: 0.95rem;
  line-height: 1.4;
  white-space: pre-wrap;
}

.status.ok { color: var(--ok); }
.status.err { color: var(--err); }

code {
  font-size: 0.85em;
}