:root { --green: #2f7d32; }
* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  background: #f5f5f2;
  color: #222;
}
body.modal-open { overflow: hidden; }

.site-header { text-align: center; padding: 36px 20px 18px; }
.site-title {
  color: var(--green);
  text-decoration: none;
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 600;
  letter-spacing: 0.08em;
}
.site-subtitle { margin: 8px 0 0; color: #666; }

.gallery-page { width: min(1200px, 94%); margin: 0 auto 60px; }

.back-link, .more-button, .filter-button {
  border: 1px solid var(--green);
  background: #fff;
  color: var(--green);
  cursor: pointer;
}
.back-link {
  display: inline-block;
  border-radius: 24px;
  padding: 10px 24px;
  text-decoration: none;
  margin-bottom: 18px;
}
.back-link:hover, .more-button:hover, .filter-button:hover, .filter-button.active {
  background: var(--green);
  color: #fff;
}

.gallery-heading { text-align: center; margin-bottom: 22px; }
.gallery-heading h1 {
  margin: 0;
  color: var(--green);
  font-size: clamp(2rem, 4vw, 3rem);
}

.filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 8px;
  width: min(900px, 100%);
  margin: 0 auto 32px;
}
.filter-button {
  width: 100%;
  border-radius: 22px;
  padding: 8px 12px;
  font-size: 0.9rem;
}

.photo-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}
.photo-button {
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
}
.photo-thumb {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 12px;
  box-shadow: 0 5px 18px rgba(0,0,0,.12);
}
.photo-caption { padding: 10px 4px 0; text-align: center; }

.more-wrapper { grid-column: 1 / -1; text-align: center; margin-top: 10px; }
.more-button {
  border-radius: 24px;
  padding: 10px 24px;
  font-size: 1rem;
}
.gallery-error { grid-column: 1 / -1; text-align: center; color: #777; }

footer {
  text-align: center;
  padding: 0 20px 30px;
  color: #888;
  font-size: .85rem;
}
footer p { margin: 4px 0; }

/* Existing photo-details window */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(0,0,0,.82);
}
.lightbox.open { display: flex; }
.lightbox-dialog {
  position: relative;
  width: min(1100px, 96vw);
  max-height: 92vh;
  overflow: auto;
  display: grid;
  grid-template-columns: minmax(0,1.45fr) minmax(280px,.55fr);
  gap: 24px;
  padding: 24px;
  border-radius: 16px;
  background: #fff;
}
.lightbox-close {
  position: absolute;
  top: 10px;
  right: 14px;
  z-index: 2;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 50%;
  background: rgba(255,255,255,.92);
  font-size: 2rem;
  cursor: pointer;
}
.lightbox-image {
  display: block;
  width: 100%;
  max-height: 78vh;
  object-fit: contain;
  border-radius: 10px;
  background: #eee;
  cursor: zoom-in;
}
.zoom-hint { margin-top: 8px; text-align: center; color: #777; font-size: .8rem; }
.lightbox-info { align-self: center; padding: 10px 6px; }
.lightbox-info h2 { margin: 0 0 18px; color: var(--green); }
.meta-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid #e5e5e5;
}
.meta-row dt { font-weight: 600; }
.meta-row dd { margin: 0; }
.maps-link {
  display: inline-block;
  margin-top: 22px;
  color: var(--green);
  font-weight: 600;
}

/* New full-screen zoom viewer */
.zoom-viewer {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  background: rgba(0,0,0,.96);
}
.zoom-viewer.open { display: block; }

.zoom-toolbar {
  position: absolute;
  top: 12px;
  left: 50%;
  z-index: 2002;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 9px;
  border-radius: 28px;
  background: rgba(20,20,20,.82);
  color: #fff;
}
.zoom-toolbar button {
  min-width: 38px;
  height: 38px;
  border: 1px solid rgba(255,255,255,.35);
  border-radius: 20px;
  background: rgba(255,255,255,.08);
  color: #fff;
  cursor: pointer;
}
#zoom-level { min-width: 58px; text-align: center; }

.zoom-stage {
  position: absolute;
  inset: 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: none;
  cursor: zoom-in;
}
.zoom-stage.zoomed { cursor: grab; }
.zoom-image {
  display: block;
  max-width: 96vw;
  max-height: 94vh;
  object-fit: contain;
  user-select: none;
  -webkit-user-drag: none;
  transform-origin: center center;
  will-change: transform;
  width: auto;
  height: auto;
}

@media (max-width: 1000px) {
  .photo-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
}
@media (max-width: 700px) {
  .filters { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .photo-grid { grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
  .lightbox { padding: 10px; }
  .lightbox-dialog { grid-template-columns: 1fr; gap: 12px; padding: 16px; max-height: 96vh; }
  .lightbox-image { max-height: 58vh; }
}
@media (max-width: 430px) {
  .photo-grid { grid-template-columns: 1fr; }
}
@media (max-width: 380px) {
  .filters { grid-template-columns: 1fr; }
}

/* Centre the Countries button on gallery pages */
.gallery-page > .back-link {
  display: block;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}