/* Reset i ogólny wygląd */
body {
  font-family: 'Inter', sans-serif;
  background: #fff;
  color: #000;
  margin: 0;
  padding: 0;
}

a {
  text-decoration: none;
  color: inherit;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Układ ogólny */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.text-center {
  text-align: center;
}

.section {
  padding: 30px 20px;
}

/* Nagłówek */
.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.logo {
  height: 120px;
}

/* Nawigacja */
.nav a {
  margin: 0 10px;
  font-weight: 600;
  transition: color 0.3s;
}

.nav a:hover {
  color: #d33;
}

/* Hero */
.hero {
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-overlay {
  background-color: rgba(0,0,0,0.5);
  padding: 40px;
  color: #fff;
  font-size: 1.8rem;
  text-align: center;
}

/* Oferta */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.box {
  background: #fff;
  border: 1px solid #eee;
  padding: 20px;
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.box.visible {
  opacity: 1;
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  background-color: #fdfdfd;
}

/* Galeria slider */
.gallery-slider {
  position: relative;
  overflow: hidden;
  max-width: 800px;
  margin: 0 auto;
}

.slider-wrapper {
  display: flex;
  transition: transform 0.5s ease-in-out;
}

.slide {
  flex-shrink: 0;
  width: 100%;
  display: none;
}

.slide.active {
  display: block;
}

.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 2rem;
  background: rgba(255, 255, 255, 0.7);
  border: none;
  cursor: pointer;
  padding: 0 10px;
  z-index: 10;
}

.slider-btn.prev {
  left: 10px;
}

.slider-btn.next {
  right: 10px;
}

/* Facebook link */
.facebook-info {
  margin-top: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0.85;
}

.facebook-info img {
  width: 24px;
  height: 24px;
  margin-right: 8px;
}

/* Pasek dofinansowania */
.funding-bar {
  padding: 20px 0;
}

.funding-img {
  max-width: 100%;
  height: auto;
}

/* Stopka */
.footer {
  text-align: center;
  padding: 20px 0;
  background: #f9f9f9;
}

.footer-logo {
  height: 80px;
  margin-bottom: 10px;
}

/* Responsywność */
@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav {
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .logo {
    height: 100px;
  }

  .gallery-slider {
    max-width: 100%;
  }
}
<style>
/* Rozszerzenie stylów dla urządzeń mobilnych */
@media (max-width: 768px) {
  .hero {
    height: auto;
    padding: 40px 20px;
    text-align: center;
  }

  .hero-overlay {
    background-color: rgba(255, 255, 255, 0.95);
    font-size: 1.4rem;
    padding: 20px;
  }

  iframe {
    width: 100% !important;
    height: auto;
  }

  .gallery-slider img {
    height: auto !important;
    max-height: 300px;
  }

  .slider-btn {
    font-size: 1.5rem;
    padding: 5px 8px;
  }

  .box {
    font-size: 0.95rem;
    padding: 15px;
  }

  .footer-logo {
    height: 60px;
  }
}
</style>