body {
  background: #f5fafa;
  color: #003b4a;
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;
}
.top {
  text-align: center;
  margin-bottom: 20px;
  background: linear-gradient(to right, #e0f7fa, #ffffff);
  border: 1px solid #cce7ec;
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.07);
}
.top h1 {
  margin: 0;
  font-size: 1.4rem;
  color: #003b4a;
  font-weight: 600;
}
.top p {
  margin: 6px 0 0;
  color: #005b6f;
  font-size: 0.95rem;
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  max-width: 1200px;
  margin: 0 auto 30px auto;
  padding: 10px;
}
.thumb {
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.08);
  border: 1px solid rgba(0,91,111,0.15);
  cursor: zoom-in;
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.thumb:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0,0,0,0.12);
}
.thumb img {
  display: block;
  width: 100%;
  height: 200px;
  object-fit: cover;
}
.details-card,
.contact-card {
  max-width: 800px;
  margin: 0 auto 24px auto;
  background: #ffffff;
  border-radius: 16px;
  padding: 20px 24px;
  border: 1px solid rgba(0,91,111,0.15);
  box-shadow: 0 10px 28px rgba(0,0,0,0.07);
}
.details-card h2,
.contact-card h2 {
  margin-top: 0;
  font-size: 1.2rem;
  font-weight: 600;
  color: #003b4a;
}
.details-card ul {
  margin: 0;
  padding-left: 18px;
  color: #003b4a;
  line-height: 1.6;
  font-size: 1rem;
}
.contact-card p {
  margin: 0 0 10px 0;
  font-size: 1rem;
  line-height: 1.6;
  color: #003b4a;
}
.contact-card a {
  color: #006680;
  text-decoration: none;
  font-weight: 600;
}
.contact-card a:hover {
  text-decoration: underline;
}
.footer-note {
  font-size: 0.8rem;
  color: #666;
}
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.8);
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 20px;
  z-index: 9999;
  color: #fff;
}
.lightbox img {
  max-width: 90%;
  max-height: 70vh;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  object-fit: contain;
  background: #000;
}
.caption {
  max-width: 90%;
  margin-top: 16px;
  text-align: center;
  font-size: 1rem;
  line-height: 1.4;
}
.close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 24px;
  background: rgba(0,0,0,0.6);
  color: #fff;
  border: 0;
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
  line-height: 1;
}
.nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 32px;
  background: rgba(0,0,0,0.6);
  color: #fff;
  border: 0;
  border-radius: 8px;
  width: 44px;
  height: 44px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  user-select: none;
}
.prev { left: 20px; }
.next { right: 20px; }
.nav-btn:active,
.close-btn:active {
  background: rgba(0,0,0,0.8);
}