body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  background-color: #f2f2f2;
  color: #333;
}

header {
  background-color: #222;
  color: #fff;
  padding: 2em;
  text-align: center;
}

main {
  padding: 2em;
  max-width: 800px;
  margin: auto;
}

h1, h2 {
  color: #cc0000;
}

img {
  max-width: 100%;
  border: 5px solid #333;
  border-radius: 8px;
  margin-top: 1em;
}

ul {
  padding-left: 20px;
}

footer {
  background-color: #222;
  color: #fff;
  text-align: center;
  padding: 1em;
  margin-top: 2em;

}
/* --- Lightbox (Week 6) --- */
.lb-overlay { position: fixed; inset: 0; display: none; z-index: 9999; }
.lb-overlay.is-open { display: block; }
.lb-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.75); }
.lb-dialog {
  position: absolute; inset: 0;
  margin: auto; max-width: min(90vw, 1100px); max-height: 90vh;
  display: grid; grid-template-areas: "img" "cap";
  align-items: center; justify-items: center; padding: 1rem;
}
.lb-img { grid-area: img; max-width: 100%; max-height: 70vh; display: block; }
.lb-caption { grid-area: cap; color: #eee; margin-top: 0.5rem; text-align: center; }
.lb-close, .lb-prev, .lb-next {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(0,0,0,0.55); color: #fff; border: 0; padding: 0.5rem 0.75rem;
  font-size: 1.5rem; cursor: pointer; border-radius: 0.5rem;
}
.lb-close { top: 1rem; right: 1rem; transform: none; font-size: 2rem; }
.lb-prev { left: 1rem; }
.lb-next { right: 1rem; }
.lb-close:focus, .lb-prev:focus, .lb-next:focus { outline: 2px solid #fff; outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  .lb-overlay, .lb-dialog { transition: none !important; animation: none !important; }
}

/* --- Lightbox (Week 06 minimal) --- */
.lb-overlay { position: fixed; inset: 0; display: none; }
.lb-overlay.is-open { display: block; }
.lb-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.75); }
.lb-dialog {
  position: absolute; inset: 0;
  margin: auto; max-width: min(90vw, 1100px); max-height: 90vh;
  display: grid; grid-template-areas: "img" "cap";
  align-items: center; justify-items: center; padding: 1rem;
}
.lb-img { grid-area: img; max-width: 100%; max-height: 70vh; display: block; }
.lb-caption { grid-area: cap; color: #eee; margin-top: 0.5rem; text-align: center; }
.lb-close, .lb-prev, .lb-next {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(0,0,0,0.55); color: #fff; border: 0; padding: 0.5rem 0.75rem;
  font-size: 1.5rem; cursor: pointer; border-radius: 0.5rem;
}
.lb-close { top: 1rem; right: 1rem; transform: none; font-size: 2rem; }
.lb-prev { left: 1rem; }
.lb-next { right: 1rem; }
.lb-close:focus, .lb-prev:focus, .lb-next:focus { outline: 2px solid #fff; outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  .lb-overlay, .lb-dialog { transition: none !important; animation: none !important; }
}