:root{
  --bg:#000;
  --fg:#f4f4f4;
  --muted:#bdbdbd;
  --accent:#ffffff;
  --max:1100px;
  --thumb:84px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  background:var(--bg);
  color:var(--fg);
}

a{color:var(--fg); text-decoration:none}
a:hover{ text-decoration:underline}

.container{max-width:var(--max); margin:0 auto; padding:18px 16px}

header{
  position:sticky; top:0; z-index:10;
  background:rgba(0,0,0,.85);
  backdrop-filter: blur(8px);
  border-bottom:1px solid rgba(255,255,255,.08);
}

.nav{
  display:flex; align-items:center; justify-content:space-between; gap:14px;
}

.brand{
  font-weight:650;
  letter-spacing:.06em;
  text-transform:uppercase;
  font-size:14px;
}

.navlinks{
  display:flex; gap:14px; align-items:center;
  font-size:14px;
}

.navlinks a{
  padding:8px 10px;
  border-radius:10px;
}

.navlinks a[aria-current="page"]{
  outline:1px solid rgba(255,255,255,.35);
}

.menuBtn{
  display:none;
  border:1px solid rgba(255,255,255,.22);
  background:transparent;
  color:var(--fg);
  padding:8px 10px;
  border-radius:10px;
  font-size:14px;
}

/* dropdown */
.dropdown{
  position:relative;
}

.dropdownBtn{
  background:transparent;
  border:none;
  color:var(--fg);
  font-size:14px;
  padding:8px 10px;
  border-radius:10px;
  cursor:pointer;
  font-family:inherit;
}

.dropdownBtn:hover{
  text-decoration:underline;
}

.dropdownMenu{
  display:none;
  position:absolute;
  top:100%;
  left:0;
  background:rgba(0,0,0,.96);
  border:1px solid rgba(255,255,255,.12);
  border-radius:12px;
  padding:6px;
  min-width:180px;
  z-index:20;
}

.dropdownMenu.open{
  display:flex;
  flex-direction:column;
}

.dropdownMenu a{
  padding:8px 10px;
  border-radius:8px;
  font-size:13px;
  white-space:nowrap;
}

.dropdownMenu a:hover{
  background:rgba(255,255,255,.08);
  text-decoration:none;
}

@media (max-width: 640px){
  .menuBtn{display:inline-flex}
  .navlinks{
    display:none;
    position:absolute;
    right:16px;
    top:56px;
    flex-direction:column;
    background:rgba(0,0,0,.96);
    border:1px solid rgba(255,255,255,.12);
    padding:10px;
    border-radius:14px;
    min-width:170px;
  }
  .navlinks.open{display:flex}
  .nav{position:relative}

  .dropdownMenu{
    position:static;
    border:none;
    background:transparent;
    padding:0 0 0 10px;
  }
}

main{padding:14px 0 30px}

h1{
  margin:10px 0 18px;
  font-size:18px;
  font-weight:650;
  letter-spacing:.02em;
}

.viewer{
  border:1px solid rgba(255,255,255,.12);
  border-radius:18px;
  overflow:hidden;
  background:rgba(255,255,255,.02);
}

.viewerInner{
  padding:14px;
}

.mainImageWrap{
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:220px;
}

.mainImage{
  width:100%;
  max-height:72vh;
  object-fit:contain;
  display:block;
}

.caption{
  margin-top:10px;
  font-size:13px;
  color:var(--muted);
  line-height:1.45;
}

.credit{
  margin-top:6px;
  font-size:12px;
  color:rgba(255,255,255,.7);
}

.thumbs{
  display:flex;
  gap:10px;
  padding:12px 14px 14px;
  overflow:auto;
  border-top:1px solid rgba(255,255,255,.12);
}

.thumbBtn{
  border:1px solid rgba(255,255,255,.16);
  background:transparent;
  padding:0;
  border-radius:14px;
  overflow:hidden;
  flex:0 0 auto;
  cursor:pointer;
}

.thumbBtn[aria-current="true"]{
  outline:2px solid rgba(255,255,255,.75);
  outline-offset:0;
}

.thumbImg{
  width:var(--thumb);
  height:var(--thumb);
  object-fit:cover;
  display:block;
  background:#000;
}

.pdfWrap{
  border:1px solid rgba(255,255,255,.12);
  border-radius:18px;
  overflow:hidden;
  background:rgba(255,255,255,.02);
}

.pdfTools{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:12px 14px;
  border-bottom:1px solid rgba(255,255,255,.12);
}

.pdfTools .title{
  font-size:14px;
  font-weight:600;
}

.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 10px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.22);
  background:transparent;
  color:var(--fg);
  font-size:13px;
}

.btn:hover{background:rgba(255,255,255,.06); text-decoration:none}

iframe.pdf{
  width:100%;
  height:min(82vh, 980px);
  border:0;
  display:block;
  background:#111;
}

/* media page */
.mediaList{
  display:flex;
  flex-direction:column;
  gap:16px;
}

.mediaItem{
  border:1px solid rgba(255,255,255,.12);
  border-radius:18px;
  padding:18px 20px;
  background:rgba(255,255,255,.02);
}

.mediaTitle{
  margin:0 0 4px;
  font-size:15px;
  font-weight:600;
}

.mediaMeta{
  margin:0 0 14px;
  font-size:13px;
  color:var(--muted);
}

.mediaItem audio{
  width:100%;
  border-radius:10px;
}

footer{
  border-top:1px solid rgba(255,255,255,.08);
  padding:18px 0 26px;
  color:rgba(255,255,255,.62);
  font-size:12px;
}