/* Ogólne resetowanie marginesów */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.6;
  background: #f5f7fa;
  color: #222;
}

/* Górna nawigacja */
.topnav {
  background: #0d47a1;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  padding: 0.5rem;
}

.topnav a {
  color: #fff;
  text-decoration: none;
  padding: 0.75rem 1.2rem;
  transition: background 0.3s;
  font-weight: 500;
}

.topnav a:hover,
.topnav a.active {
  background: #1565c0;
  border-radius: 6px;
}

/* Główna treść */
.container {
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1rem;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 0 12px rgba(0,0,0,0.08);
}

.container h1,
.container h2,
.container h3,
.container h4 {
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  font-weight: 600;
  color: #0d47a1;
}

.intro {
  color: #1565c0;
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

p, ul, ol {
  margin-bottom: 1rem;
}

ul li {
  margin-left: 1.2rem;
  list-style: disc;
}

/* Obrazki i figcaption */
figure {
  margin: 1.5rem 0;
  text-align: center;
}

figure img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

figcaption {
  font-size: 0.9rem;
  color: #555;
  margin-top: 0.5rem;
}

/* Audio player */
audio {
  width: 100%;
  margin: 0.5rem 0 1.5rem;
}

/* Stopka */
.footer {
  text-align: center;
  padding: 1rem;
  background: #0d47a1;
  color: #fff;
  margin-top: 2rem;
  border-top: 4px solid #1565c0;
}

/* Responsywność */
@media (max-width: 600px) {
  .container {
    margin: 1rem;
    padding: 1rem;
  }
  .topnav a {
    padding: 0.5rem 0.8rem;
  }
}