html {
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

body {
    --bg: #f7f7f7;
    --text: #333;
    --card: white;
    --border: #e5e5e5;
    background: var(--bg);
    color: var(--text);
    margin: 0;
    font-family: 'Manrope', sans-serif;
}

/* DARK MODE OVERRIDES */
body.dark {
  --bg: #111;
  --text: #f5f5f5;
  --card: #222;
  --border: #444;
}

header {
  position: relative;
  padding: 20px;
  text-align: center;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
header h1 {
  font-size: 28px;
  margin: 0;
  letter-spacing: 1px;
}
nav {
  margin-top: 10px;
}
nav a {
  margin: 0 15px;
  text-decoration: none;
  color: var(--text);
  font-size: 15px;
}
nav a:hover {
  opacity: 0.7;
}
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 10px;
  padding: 20px;
}
.gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: pointer;
  border-radius: 6px;
  transition: transform 0.2s ease;
}
.gallery img:hover {
  transform: scale(1.03);
}
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  justify-content: center;
  align-items: center;
  padding: 20px;
}
.modal img {
  max-width: 90%;
  max-height: 90%;
  border-radius: 8px;
}

/* Modal navigation buttons - position relative to the centered image */
.modal .nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.45);
  color: white;
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 20px;
  opacity: 0.95;
  z-index: 10010;
  pointer-events: auto;
}
.modal .nav-btn:hover { opacity: 1; }
/* Place buttons just outside the maximum image width (modal image uses max-width:90%)
   This keeps arrows visually aligned with the image across aspect ratios. */
.modal .nav-prev { left: calc((100% - 90vw) / 2 + 8px); }
.modal .nav-next { right: calc((100% - 90vw) / 2 + 8px); }

/* Larger autoplay video thumbnails */
.postcard-video {
  width: 100%;
  max-width: 550px;     /* Larger thumbnail */
  height: auto;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: var(--shadow);
  display: block;
  margin: 0 auto;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.postcard-video:hover {
  transform: scale(1.03);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.25);
}

/* Trips - photo grid */

.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 10px;
  padding: 20px;
  align-items: start;
}

.trip-card {
  background: var(--card);
  border-radius: 10px;
  border: 1px solid var(--border);
  overflow: hidden;
  text-align: center;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.trip-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 18px rgba(0,0,0,0.15);
}

.trip-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}

@media (min-width: 1200px) {
  .trip-card img {
    height: 260px;
  }
}

.trip-title {
  padding: 12px 15px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  background: var(--card);
}

/* Trip detail page image grid */
/* Trip detail thumbnails: enforce uniform thumbnail boxes while preserving full-size images in modal */
.photo-item {
  width: 100%;
  aspect-ratio: 3 / 4; /* default to portrait box */
  overflow: hidden;
  border-radius: 8px;
  background: var(--card);
}
.photo-item.landscape {
  aspect-ratio: 4 / 3;
}
.photo-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: opacity 0.3s ease, transform 0.25s ease;
}
.photo-item img:hover { opacity: 0.85; transform: scale(1.02); }