* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Manrope', sans-serif;
  background-color: #f5f5f5;
  color: #222;
  line-height: 1.7;
}

header {
  background: url('https://source.unsplash.com/1600x900/?bryansk,city') center/cover no-repeat;
  height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: white;
  padding: 1rem;
}

header h1 {
  font-size: 2.5rem;
  background: rgba(0, 0, 0, 0.6);
  padding: 1rem 2rem;
  border-radius: 12px;
}

.subtitle {
  margin-top: 1rem;
  font-size: 1.2rem;
  background: rgba(0,0,0,0.4);
  padding: 0.5rem 1rem;
  border-radius: 8px;
}

main {
  max-width: 1000px;
  margin: 2rem auto;
  padding: 1rem;
}

h2 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
  color: #111;
}

p {
  margin-bottom: 1rem;
}

.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.photo-grid img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.photo-grid img:hover {
  transform: scale(1.03);
}

.fullscreen-btn {
  margin-top: 1rem;
  padding: 0.6rem 1rem;
  font-size: 1rem;
  border: none;
  background: #111;
  color: white;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.fullscreen-btn:hover {
  background: #333;
}

footer {
  background: #111;
  color: #eee;
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
}

/* Lightbox */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.9);
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease;
  z-index: 999;
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox img {
  max-width: 90%;
  max-height: 90%;
  border-radius: 10px;
}