/* Compact header utilities. Loaded after the shared page styles. */
.site-header .header-inner{min-height:76px;gap:32px}
.site-header .header-actions{gap:6px}
.site-header .header-popup{position:relative;flex-shrink:0;z-index:15}
.site-header .header-popup>summary{display:flex;align-items:center;justify-content:center;gap:7px;min-width:44px;min-height:44px;height:44px;padding:0 10px;border:0;border-radius:10px;list-style:none;color:var(--muted);background:transparent;transition:background .15s,color .15s}
.site-header .header-popup>summary::-webkit-details-marker{display:none}
.site-header .header-popup>summary::marker{content:""}
.site-header .header-popup>summary:hover,.site-header .header-popup[open]>summary{background:var(--paper);color:var(--ink)}
.site-header .header-popup>summary:focus-visible,.site-header .header-download:focus-visible,.site-header .header-popup a:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.site-header .header-popup>summary .icon{width:20px;height:20px}
.site-header .language-current{font-size:13px;line-height:1.2;font-weight:550}
.site-header .language-chevron .icon{width:14px;height:14px;color:var(--muted)}
.site-header .language-options,.site-header .theme-options,.site-header .mobile-nav>nav{position:absolute;right:0;top:calc(100% + 8px);min-width:190px;margin:0;padding:6px;border:1px solid var(--border);border-radius:14px;background:var(--canvas);box-shadow:0 8px 28px #00000014,0 2px 6px #0000000a;z-index:20}
[data-theme=dark] .site-header .language-options,[data-theme=dark] .site-header .theme-options,[data-theme=dark] .site-header .mobile-nav>nav{box-shadow:0 10px 28px #00000040}
.site-header .language-options a{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:42px;padding:9px 12px;border-radius:8px;font-size:14px;line-height:1.4}
.site-header .language-options a .icon{width:16px;height:16px;color:var(--blue)}
.site-header .language-options a:hover,.site-header .mobile-nav nav a:hover{background:var(--paper);color:var(--ink)}
.site-header .language-options a[aria-current]{background:var(--blue-soft);color:var(--blue)}
.site-header .theme-picker>summary{width:44px;padding:0}
.site-header .theme-options{width:max-content;max-width:calc(100vw - 32px)}
.site-header .theme-option{position:relative;display:flex;align-items:center;gap:10px;min-height:42px;padding:9px 12px;border-radius:8px;font-size:14px;line-height:1.4;color:var(--ink);cursor:pointer}
.site-header .theme-option:hover{background:var(--paper)}
.site-header .theme-option:focus-within{outline:2px solid var(--blue);outline-offset:-2px}
.site-header .theme-option .icon{width:18px;height:18px}
.site-header .theme-option-icon{color:var(--muted)}
.site-header .theme-option-check{margin-left:auto;padding-left:18px;color:var(--blue);visibility:hidden}
.site-header .theme-option input:checked~.theme-option-check{visibility:visible}
.site-header .theme-option input:checked~.theme-option-label,.site-header .theme-option input:checked~.theme-option-icon{color:var(--blue)}
.site-header .header-download{min-height:40px;padding:9px 15px;margin-left:8px;font-size:13px;line-height:1.5;border-radius:10px;white-space:nowrap}
.site-header .header-download:hover{transform:none}
.site-header .header-download .icon{width:16px;height:16px}
.site-header .mobile-nav>nav{width:220px;max-width:calc(100vw - 32px)}
.site-header .mobile-nav nav a{min-height:42px;padding:9px 12px;border-radius:8px;font-size:14px}
@media(max-width:1100px){
  .site-header .header-inner{gap:24px}
  .site-header .language-current,.site-header .language-chevron{display:none}
  .site-header .language-control>summary{width:44px;padding:0}
}
@media(max-width:900px){
  .site-header .header-inner{min-height:68px}
  .site-header .header-actions{gap:4px}
}
@media(max-width:640px){
  .site-header .header-inner{min-height:64px;padding-inline:16px;gap:10px!important}
  .site-header .header-inner .brand{font-size:22px}
  .site-header .header-actions{gap:2px!important}
  .site-header .header-download{display:none}
  .site-header .language-options{right:-88px}
  .site-header .theme-options{right:-44px}
}
@media(max-width:360px){
  .site-header .header-inner .brand{font-size:21px}
  .site-header .header-inner .brand-symbol{width:25px;margin-right:6px}
}