/* ───────── site-nav (top header below the anonymity banner) ───────── */
.site-nav{
  background: var(--sindoor);
  color: var(--paper);
  border-bottom: 3px solid var(--ink);
  font-family: var(--mono);
  position: relative;
  z-index: 30;
}
.site-nav .nav-inner{
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: flex;
  align-items: center;
  gap: 18px;
}
.site-nav .brand{
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-decoration: none;
  color: var(--paper);
  text-transform: uppercase;
  font-weight: 600;
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  flex-shrink: 0;
}
.site-nav .brand-bn{
  font-family: var(--bn);
  font-weight: 700;
  letter-spacing: 0;
  font-size: 22px;
  color: var(--paper);
}
.site-nav .brand-sep{
  opacity: 0.5;
  font-weight: 400;
  font-size: 16px;
}
.site-nav .brand-en{
  letter-spacing: 0.22em;
  color: color-mix(in oklab, var(--paper) 85%, transparent);
  font-size: 11px;
}
.site-nav .nav-list{
  list-style: none;
  display: flex;
  gap: 0;
  margin: 0 0 0 auto;
  padding: 0;
}
.site-nav .nav-list > li{
  position: relative;
}
.site-nav .nav-list > li > a{
  display: inline-block;
  padding: 10px 14px;
  font-size: 11px;
  letter-spacing: 0.20em;
  color: var(--paper);
  text-decoration: none;
  text-transform: uppercase;
  font-weight: 500;
  transition: opacity 0.1s;
  white-space: nowrap;
  border-bottom: 1px solid transparent;
}
html[data-lang="bn"] .site-nav .nav-list > li > a{
  font-family: var(--bn);
  letter-spacing: 0;
  font-size: 14px;
  text-transform: none;
  font-weight: 600;
}
.site-nav .nav-list > li > a:hover,
.site-nav .nav-list > li:focus-within > a,
.site-nav .nav-list > li:hover > a{
  opacity: 0.85;
  border-bottom-color: var(--paper);
}
.site-nav .arr{
  font-size: 9px;
  opacity: 0.7;
  margin-left: 4px;
}
.site-nav .sub{
  position: absolute;
  top: 100%;
  left: 0;
  list-style: none;
  padding: 6px 0;
  margin: 0;
  background: var(--paper);
  border: 1px solid var(--ink);
  border-top: none;
  min-width: 220px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition: opacity 0.12s, transform 0.12s;
  z-index: 50;
  box-shadow: 0 8px 24px rgba(15,10,5,0.20);
}
.site-nav .has-sub:hover .sub,
.site-nav .has-sub:focus-within .sub{
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.site-nav .sub li a{
  display: block;
  padding: 9px 18px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink);
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  font-family: var(--mono);
}
html[data-lang="bn"] .site-nav .sub li a{
  font-family: var(--bn);
  letter-spacing: 0;
  font-size: 14px;
  text-transform: none;
  font-weight: 600;
}
.site-nav .sub li a:hover{
  background: var(--paper-2);
  color: var(--sindoor);
}
.site-nav .nav-lang{
  display: inline-flex;
  align-items: center;
  margin-left: 14px;
  border: 1.5px solid var(--paper);
  flex-shrink: 0;
}
.site-nav .nav-lang button{
  background: none;
  border: none;
  color: var(--paper);
  cursor: pointer;
  font: inherit;
  padding: 6px 10px;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  line-height: 1;
}
.site-nav .nav-lang button:nth-child(3){
  font-family: var(--bn);
  font-size: 14px;
  letter-spacing: 0;
  font-weight: 700;
  text-transform: none;
  border-left: 1.5px solid var(--paper);
}
html[data-lang="en"] .site-nav .nav-lang button:nth-child(1){
  background: var(--paper);
  color: var(--sindoor);
}
html[data-lang="bn"] .site-nav .nav-lang button:nth-child(3){
  background: var(--paper);
  color: var(--sindoor);
}
.site-nav .nav-lang span{
  display: none;
}
.site-nav .nav-burger{
  display: none;
  font-size: 22px;
  cursor: pointer;
  margin-left: auto;
  padding: 4px 10px;
  user-select: none;
  color: var(--paper);
}
.site-nav .nav-cb{
  display: none;
}

@media (max-width: 920px){
  .site-nav .nav-burger{ display: inline-block; }
  .site-nav .nav-lang{ margin-left: 0; }
  .site-nav .nav-list{
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--sindoor);
    border-bottom: 2px solid var(--ink);
    padding: 6px 0;
    margin: 0;
    z-index: 40;
    box-shadow: 0 12px 24px rgba(15,10,5,0.20);
  }
  .site-nav .nav-cb:checked ~ .nav-list{ display: flex; }
  .site-nav .nav-list > li{ width: 100%; }
  .site-nav .nav-list > li > a{ padding: 12px var(--gutter); display: block; }
  .site-nav .has-sub .sub{
    position: static;
    box-shadow: none;
    border: none;
    background: var(--sindoor-2);
    opacity: 1;
    pointer-events: auto;
    transform: none;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.18s;
  }
  .site-nav .has-sub:hover .sub,
  .site-nav .has-sub:focus-within .sub{ max-height: 320px; }
  .site-nav .sub li a{
    padding: 10px calc(var(--gutter) + 16px);
    color: var(--paper);
  }
  .site-nav .sub li a:hover{ background: rgba(0,0,0,0.15); color: var(--paper); }
}