* { box-sizing: border-box; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  max-width: 780px;
  margin: 2rem auto;
  padding: 0 1rem;
  color: #1e1e1e;
  background: #fafafa;
  line-height: 1.5;
}

h1 { font-size: 1.6rem; margin-bottom: 0.2rem; }
p.podtytul { color: #555; margin-top: 0; }

.zakladki { display: flex; gap: 0.5rem; margin: 1.5rem 0 1rem; border-bottom: 2px solid #ddd; }

.zakladka {
  padding: 0.6rem 1.2rem;
  cursor: pointer;
  border: none;
  background: none;
  font-size: 1rem;
  color: #555;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
}

.zakladka.aktywna { color: #1a5fb4; border-bottom-color: #1a5fb4; font-weight: 600; }

.panel { display: none; }
.panel.aktywny { display: block; }

fieldset { border: 1px solid #ddd; border-radius: 8px; margin-bottom: 1rem; padding: 0.8rem 1rem; }
legend { padding: 0 0.4rem; font-weight: 600; font-size: 0.9rem; color: #333; }

label { display: block; margin: 0.6rem 0 0.3rem; font-weight: 500; font-size: 0.92rem; }

input[type="text"], input[type="url"], input[type="password"], input[type="number"], textarea {
  width: 100%;
  padding: 0.5rem 0.6rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
}

textarea { min-height: 90px; resize: vertical; }

.radio-linia { display: flex; align-items: center; gap: 0.4rem; margin: 0.3rem 0; }
.radio-linia label { margin: 0; font-weight: normal; }

.dwie-kolumny { display: flex; gap: 1rem; }
.dwie-kolumny > div { flex: 1; }

button[type="submit"], .przycisk-drugorzedny {
  background: #1a5fb4;
  color: #fff;
  border: none;
  padding: 0.65rem 1.3rem;
  border-radius: 6px;
  font-size: 0.95rem;
  cursor: pointer;
  margin-top: 0.5rem;
}

button[type="submit"]:hover, .przycisk-drugorzedny:hover { background: #164a8f; }

.przycisk-drugorzedny { background: #6c757d; margin-left: 0.5rem; }
.przycisk-drugorzedny:hover { background: #565e64; }

.status { margin-top: 0.8rem; font-size: 0.9rem; min-height: 1.2em; }
.status-ok { color: #1a7a3c; }
.status-error { color: #c0392b; font-weight: 600; }

.podglad { max-width: 100%; border-radius: 8px; margin-top: 0.8rem; border: 1px solid #ddd; }

.przycisk-pobierz {
  display: inline-block;
  margin-top: 0.6rem;
  background: #1a7a3c;
  color: #fff;
  text-decoration: none;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  font-size: 0.9rem;
}
.przycisk-pobierz:hover { background: #145c2d; }

#odczytaj-wynik {
  margin-top: 0.8rem;
  white-space: pre-wrap;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 0.8rem;
  min-height: 1.5em;
  font-size: 0.95rem;
}

.info {
  font-size: 0.85rem;
  color: #666;
  background: #f0f0f0;
  border-radius: 6px;
  padding: 0.6rem 0.8rem;
  margin-top: 1.5rem;
}

@media (prefers-color-scheme: dark) {
  body { background: #1b1b1b; color: #e8e8e8; }
  p.podtytul { color: #aaa; }
  fieldset { border-color: #444; }
  legend { color: #ddd; }
  input, textarea { background: #2a2a2a; color: #eee; border-color: #555; }
  .zakladki { border-bottom-color: #444; }
  .zakladka { color: #aaa; }
  .zakladka.aktywna { color: #7fb1ff; border-bottom-color: #7fb1ff; }
  #odczytaj-wynik { background: #2a2a2a; border-color: #444; }
  .info { background: #262626; color: #999; }
  .podglad { border-color: #444; }
}