/* 3-2-26 */
:root {
  --color: #F1F1F1;   /* E6E6EE */
  --background: #3A4040;  /* lighter: 405060; */
  --framebackcolor: #AAAAAA;
  --capcolorframe: black;
  --capcolornoframe: var(--color);
  --font: system-ui, "Segoe UI", Arial, sans-serif;
  --thumbx: 320px;
  --shadow-offset: 6px;  
  --shadow-blur: 12px;  
  --captionsize: 1rem;
  --titlesize: 2rem;
  --cellpadding: 6px;
  --gallerygap: 40px;
  --gallerypadding: 30px;
}
body {
  background: var(--background);
  color: var(--color);
  text-align: center;
  font-size:.9rem;
  font-family: var(--font);
  margin: 0;
}
a:visited { color: color-mix(in oklch, var(--color), #888888 12%); }
a:link { color: color-mix(in oklch, var(--color), #0077ff 20%); }

h1 {
  text-align: center;
  margin-top: 1rem;
  font-size:var(--titlesize);
}
h3 { text-align: center; }
.heading { 
  margin: 0 auto;
  margin-bottom: 1rem;
  text-align: center;
  width: 40%;
}
.content {
  margin: 0 auto;
  text-align: left;
  width: 40%;
  min-width: 300px;
}
@media (max-width: 600px) {
  .content {
    width: 100%;
    padding: 0 10px;
    box-sizing: border-box;
  }
}
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, var(--thumbx));
  gap: var(--gallerygap);
  padding: var(--gallerypadding);
  margin: 0 auto;
  justify-content: center;
  justify-items: center;
  align-items: start;
  list-style: none;
  margin-bottom: 2rem;
}

.cardframe {
  display: block;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 6px 6px rgba(0,0,0,.22);
  transition: box-shadow .05s ease, transform .05s ease;
  padding: var(--cellpadding);
  background: var(--framebackcolor);
  color: var(--capcolorframe);
  box-sizing: border-box;
}
.cardframe img{
  width: auto;
  height: auto;
  display: block;
  max-width: 100%;
  max-height: 100%;
  margin: 0 auto;
}
.cardframe a:link, .cardframe a:visited {color: var(--capcolorframe); }
@media (hover: hover) {
  .cardframe { cursor: pointer; }
  .cardframe:hover {
    box-shadow: 0 10px 26px rgba(0,0,0,.28);
  }
}
.cardframe a:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0,128,255,.35), 0 10px 26px rgba(0,0,0,.28);
}

.card {
  display: block;
  box-sizing: border-box;
  color: var(--capcolornoframe);
}

.card img {
  display: block;
  max-width:  100%;
  margin: 0 auto;
  box-shadow: var(--shadow-offset) var(--shadow-offset) var(--shadow-blur) rgba(0,0,0,.65);
}

.card a:link, .card a:visited {color: var(--capcolornoframe); }

.card a:focus-visible { outline: none; }

@media (max-width:  600px) {
  .gallery {
    grid-template-columns: 1fr;
    padding: 6px;
    gap: 6px;
    justify-items: stretch;
  }
  /* .card img { width: 100%; } */
  .card, .cardframe { width: 100%; }
  .cardframe img { width: 100%; }
}

.caption {
  line-height: normal;
  font-size: var(--captionsize);
  text-align: left;
  padding: 6px;
}
.caption a:link, .caption a:visited { color: inherit; }

/* bugcaption and capfooter belong after .caption */
.bugcaption { 
  /* font-size: 85%; */
  font-size: calc(var(--captionsize) * 0.85);
  text-align: left;
}
.capfooter {
  font-size: calc(var(--captionsize) * 0.85);
  text-align: center;
}

.lightbox {
  position: fixed; 
  inset: 0; 
  background: rgba(0,0,0,.9);
  display: none; 
  place-items: center; 
  z-index: 9999;
}

.lightbox.open { display: grid; }

.lb-ui {
  position: fixed; 
  top: 0; left: 0; right: 0; 
  display: flex; 
  justify-content: space-between; 
  align-items: center;
  padding: 10px; 
  color: #fff; 
  font-size: 85%;
  z-index: 3; 
}
.lb-img { 
  cursor: pointer; 
  max-width: 100vw; 
  max-height: 100vh; 
  object-fit: contain; 
  touch-action: pan-y; 
  z-index: 1; 
}

.lb-arrow {
  position: fixed;
  top: 50%;
  transform: translateY(-50%); /* Cleaner vertical centering */
  width: 48px; 
  height: 48px;
  border: 0; 
  border-radius: 50%;
  background: rgba(255,255,255,.2);
  color: #fff;
  font-size: 32px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 999;
  transition: background 0.2s;
}

.lb-arrow:hover { background: rgba(255,255,255,.4); }
.lb-arrow:active { transform: translateY(-50%) scale(.98); }

#lb-prev-btn { left: 10px; }
#lb-next-btn { right: 10px; }

.lb-btn { 
  background: rgba(255,255,255,.12); 
  border: 0; 
  color: #fff; 
  padding: 8px 10px; 
  border-radius: 8px; 
}

.lb-btn:active { transform: scale(.98); }
.lb-btn:hover { cursor: pointer; background: rgba(255,255,255,.25); }