/* nav.css — única fuente de verdad del menú (subpáginas sin JS + home con JS).
   Subpáginas: abre con :hover/:focus-within y checkbox #nmToggle.
   Home: button.nm-burger + aria-expanded (JS) con las mismas clases. */
@view-transition{navigation:auto}
::view-transition-old(root),::view-transition-new(root){animation-duration:.18s;animation-timing-function:ease}

.nav-menu{display:flex;align-items:center;gap:clamp(14px,2vw,30px);margin:0}
.nm-group{position:relative}
.nm-btn,.nm-link{appearance:none;-webkit-appearance:none;background:none;border:0;margin:0;cursor:pointer;
  font-family:var(--mono,'JetBrains Mono',ui-monospace,monospace);font-size:10.5px;font-weight:400;letter-spacing:.13em;text-transform:uppercase;
  color:var(--dim,#9a9aa3);white-space:nowrap;padding:10px 0;display:inline-flex;align-items:center;gap:7px;transition:color .25s;text-decoration:none}
.nm-btn::after{content:"";width:4px;height:4px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg) translateY(-1px);transition:transform .2s}
.nm-btn:hover,.nm-link:hover,.nm-group:focus-within .nm-btn,.nm-btn.is-active,.nm-btn[aria-expanded="true"],.nm-link[aria-current="page"],.nm-link.is-active{color:var(--white,#f5f5f7)}
.nm-btn.is-active,.nm-link[aria-current="page"]{box-shadow:inset 0 -1px 0 rgba(255,255,255,.4)}
.nm-btn:focus-visible,.nm-link:focus-visible,.nm-panel a:focus-visible,.nm-burger:focus-visible{outline:1px solid rgba(255,255,255,.5);outline-offset:3px;border-radius:6px}

.nm-panel{position:absolute;top:100%;left:-14px;min-width:300px;margin-top:8px;padding:10px;display:flex;flex-direction:column;gap:2px;
  background:rgba(12,12,14,.72);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  border:1px solid rgba(255,255,255,.1);border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.5);
  opacity:0;visibility:hidden;transform:translateY(6px);pointer-events:none;
  transition:opacity .18s ease,transform .18s ease,visibility 0s linear .18s;z-index:60}
.nm-panel::before{content:"";position:absolute;left:0;right:0;top:-10px;height:10px}
.nm-panel a{display:flex;flex-direction:column;gap:3px;padding:10px 12px;border-radius:10px;white-space:normal;text-transform:none;letter-spacing:0;box-shadow:none;transition:background .18s}
.nm-panel a b{font-family:var(--font-title,'Montserrat',system-ui,sans-serif);font-size:14px;font-weight:600;color:var(--white,#f5f5f7);line-height:1.25}
.nm-panel a span{font-family:var(--font-body,system-ui,-apple-system,sans-serif);font-size:12px;font-weight:400;color:var(--dim,#9a9aa3);line-height:1.4}
.nm-panel a:hover,.nm-panel a:focus-visible{background:rgba(255,255,255,.05)}
.nm-panel a[aria-current="page"]{background:rgba(255,255,255,.07)}

.nm-burger,.nm-toggle{display:none}

@media(min-width:901px){
  .nm-group:hover .nm-panel,.nm-group:focus-within .nm-panel,.nm-btn[aria-expanded="true"]+.nm-panel{opacity:1;visibility:visible;transform:none;pointer-events:auto;transition-delay:0s}
  .nm-group:hover .nm-btn::after,.nm-group:focus-within .nm-btn::after,.nm-btn[aria-expanded="true"]::after{transform:rotate(225deg) translate(-1px,0)}
}

@media(max-width:900px){
  .nav{flex-wrap:nowrap}
  .nav>.mark,.nav>.nav-tools,.nav>.nm-burger{position:relative;z-index:80}
  .nav>.nav-tools{margin-left:auto;order:2}
  .nm-toggle{display:block;position:absolute;opacity:0;width:1px;height:1px;margin:0;pointer-events:none}
  .nm-burger{display:inline-flex;order:3;position:relative;width:40px;height:40px;margin-left:4px;cursor:pointer;background:none;border:0;padding:0;-webkit-tap-highlight-color:transparent}
  .nm-burger i{position:absolute;left:11px;right:11px;height:1.5px;border-radius:2px;background:var(--white,#f5f5f7);top:50%;transition:transform .25s ease}
  .nm-burger i:first-child{transform:translateY(-3.5px)}
  .nm-burger i:last-child{transform:translateY(3.5px)}
  .nm-toggle:checked~.nm-burger i:first-child,.nm-burger[aria-expanded="true"] i:first-child{transform:rotate(45deg)}
  .nm-toggle:checked~.nm-burger i:last-child,.nm-burger[aria-expanded="true"] i:last-child{transform:rotate(-45deg)}
  .nm-toggle:focus-visible~.nm-burger{outline:1px solid rgba(255,255,255,.5);outline-offset:2px;border-radius:8px}

  .nav-menu{display:none;position:fixed;inset:0;z-index:70;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:26px;
    padding:88px 24px 48px;overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain;
    background:rgba(12,12,14,.86);-webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px)}
  .nm-toggle:checked~.nav-menu,.nav:has(.nm-burger[aria-expanded="true"]) .nav-menu{display:flex;animation:nmFade .2s ease both}
  .nm-group{position:static}
  .nm-btn{pointer-events:none;padding:0 0 8px;font-size:10.5px;color:var(--dim,#9a9aa3);cursor:default}
  .nm-btn::after{display:none}
  .nm-btn.is-active{box-shadow:none;color:var(--white,#f5f5f7)}
  .nm-panel{position:static;min-width:0;margin:0;padding:0;opacity:1;visibility:visible;transform:none;pointer-events:auto;
    background:none;border:0;border-radius:0;box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none;transition:none;gap:0}
  .nm-panel::before{display:none}
  .nm-panel a{padding:12px 0;border-radius:0;border-top:1px solid rgba(255,255,255,.07)}
  .nm-panel a b{font-size:18px}
  .nm-panel a span{font-size:13px}
  .nm-panel a:hover{background:none}
  .nm-link{padding:14px 0 0;font-size:12px;border-top:1px solid rgba(255,255,255,.07);color:var(--white,#f5f5f7)}
  /* un ancestro con backdrop-filter rompe position:fixed: se apaga mientras la hoja está abierta */
  .nav-bar:has(.nm-toggle:checked),.nav-bar:has(.nm-burger[aria-expanded="true"]){-webkit-backdrop-filter:none;backdrop-filter:none}
  body:has(.nm-toggle:checked),body:has(.nm-burger[aria-expanded="true"]){overflow:hidden}
}
@keyframes nmFade{from{opacity:0}to{opacity:1}}

@media(prefers-reduced-motion:reduce){
  .nm-panel,.nm-btn,.nm-btn::after,.nm-link,.nm-panel a,.nm-burger i{transition:none!important}
  .nav-menu{animation:none!important}
  ::view-transition-group(*),::view-transition-old(*),::view-transition-new(*){animation:none!important}
}