:root {
  color-scheme: light dark;
  --bg: var(--tg-theme-bg-color, #f4f1ea);
  --fg: var(--tg-theme-text-color, #1b1a17);
  --muted: var(--tg-theme-hint-color, #6b6458);
  --card: var(--tg-theme-secondary-bg-color, #fffdf8);
  --accent: var(--tg-theme-button-color, #1b4332);
  --accent-fg: var(--tg-theme-button-text-color, #ffffff);
  --ok: #1b7f4a;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: var(--tg-theme-bg-color, #12110f);
    --fg: var(--tg-theme-text-color, #f4f1ea);
    --muted: var(--tg-theme-hint-color, #b7b0a4);
    --card: var(--tg-theme-secondary-bg-color, #1c1b18);
    --accent: var(--tg-theme-button-color, #95d5b2);
    --accent-fg: var(--tg-theme-button-text-color, #102016);
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: "Segoe UI", "Helvetica Neue", sans-serif;
}

.app {
  max-width: 40rem;
  margin: 0 auto;
  padding: 1.25rem 1.1rem 2.5rem;
}

.header h1 {
  margin: 0.15rem 0 1rem;
  font-size: 1.45rem;
  font-weight: 650;
}

.eyebrow {
  margin: 0;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.72rem;
}

.meta,
.letter-wrap {
  background: var(--card);
  border-radius: 1rem;
  padding: 0.95rem 1rem;
  margin-bottom: 0.85rem;
}

#title {
  margin: 0 0 0.35rem;
  font-weight: 650;
}

#specialist {
  margin: 0;
  color: var(--muted);
}

.letter {
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.45;
  user-select: text;
  -webkit-user-select: text;
}

.actions {
  display: grid;
  gap: 0.7rem;
}

button {
  appearance: none;
  border: 0;
  border-radius: 0.9rem;
  padding: 0.95rem 1rem;
  background: var(--accent);
  color: var(--accent-fg);
  font-size: 1rem;
  font-weight: 650;
}

button:disabled {
  opacity: 0.6;
}

.status {
  min-height: 1.4rem;
  margin: 0 0 0.8rem;
  color: var(--muted);
}

.status.ok {
  color: var(--ok);
  font-weight: 650;
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}