/* ========== OGÓLNE USTAWIENIA ========== */
body {
  margin: 0;
  font-family: Arial, sans-serif;
  line-height: 1.6;
  background: url('tło.jpg') no-repeat center center fixed;
  background-size: cover;
  color: #ffffff;
  box-sizing: border-box;
}

/* ========== NAGŁÓWEK I STOPKA ========== */
header, footer {
  background-color: rgba(0, 0, 0, 0.7);
  padding: 20px;
  text-align: center;
}

header h1 {
  font-size: 2rem;
  margin: 0;
}

footer {
  color: #ffffff;
  font-size: 1rem;
}

/* ========== NAWIGACJA ========== */
nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 15px;
}

nav a {
  color: #fff;
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 8px;
  transition: background-color 0.3s;
  background-color: rgba(255, 255, 255, 0.1);
}

nav a:hover {
  background-color: rgba(29, 217, 48, 0.715);
}

/* ========== KONTENER ========== */
.container {
  background-color: rgba(255, 255, 255, 0.85);
  margin: 30px auto;
  padding: 20px;
  max-width: 1000px;
  border-radius: 12px;
  color: #000;
}

/* ========== AKAPITY ========== */
.custom-paragraph {
  background-color: rgba(0, 0, 0, 0.4);
  padding: 15px;
  border-radius: 10px;
  margin-bottom: 20px;
  color: #fff;
}

/* ========== OBRAZKI ========== */
.image-class {
  width: 100%;
  height: auto;
  border-radius: 10px;
  transition: transform 0.3s;
  display: block;
  margin: 20px 0;
}

.image-class:hover {
  transform: scale(1.05);
}

/* ========== LISTY ========== */
ul {
  padding-left: 1.2rem;
}

li {
  margin-bottom: 10px;
}

/* ========== RESPONSYWNY IFRAME VIDEO ========== */
.video-wrapper {
  position: relative;
  padding-bottom: 56.25%; /* proporcje 16:9 */
  height: 0;
  overflow: hidden;
  max-width: 100%;
  margin-top: 20px;
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* ========== MEDIA QUERIES ========== */
@media (max-width: 768px) {
  header h1 {
    font-size: 1.5rem;
  }

  nav {
    flex-direction: column;
    align-items: center;
    gap: 5px;
  }

  nav a {
    width: 90%;
    text-align: center;
    padding: 10px;
    font-size: 1rem;
  }

  .container {
    padding: 15px;
    margin: 20px 10px;
  }

  .custom-paragraph {
    font-size: 0.95rem;
  }

  footer {
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  header h1 {
    font-size: 1.3rem;
  }

  nav a {
    font-size: 0.95rem;
  }

  .custom-paragraph {
    font-size: 0.9rem;
  }

  .container {
    padding: 10px;
  }
}