/* Critical CSS para LCP y layout inicial alineado con tokens */
/* Reset base */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font-body,system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif);font-size:var(--font-size-step-0,16px);line-height:1.6;color:var(--color-text-primary,#1f2937);background:var(--color-bg,#f5f6f8)}

/* Header */
.site-header{background:var(--color-bg,#f5f6f8);border-bottom:1px solid var(--color-border,#d1d5db);padding:0.75rem 0}
.site-header__inner{display:flex;justify-content:space-between;align-items:center;max-width:var(--max-width-wide,1200px);margin:0 auto;padding:0 1rem;gap:0.5rem;flex-wrap:wrap}
.brand{font-size:1.125rem;font-weight:700;color:var(--color-accent,#0f7490);text-decoration:none;white-space:nowrap;flex-shrink:0;flex-basis:100%}
.site-nav{display:flex;gap:0.5rem;align-items:center;justify-content:space-between;width:100%}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;padding:.5rem;border:1px solid var(--color-border,#d1d5db);border-radius:.5rem;background:var(--color-surface,#fff);color:var(--color-text-primary,#1f2937);font-weight:700}
.nav-toggle:focus-visible{outline:2px solid var(--color-accent,#0f7490);outline-offset:2px}
/* Toggle icons */
.nav-toggle .icon{display:inline-block}
.nav-toggle .icon-close{display:none}
.nav-toggle[aria-expanded="true"] .icon-menu{display:none}
.nav-toggle[aria-expanded="true"] .icon-close{display:inline-block}
.site-nav__panel{display:block;width:100%}
/* Progressive enhancement + animación: solo colapsar con JS en móvil */
@media (max-width:767px){
.js .site-nav__panel{max-height:0;overflow:hidden;opacity:0;transform:translateY(-4px);visibility:hidden;transition:max-height .25s ease,opacity .2s ease,transform .2s ease}
.js .site-header.nav-open .site-nav__panel{max-height:80vh;opacity:1;transform:none;visibility:visible}
}
/* Overlay para click-outside */
.nav-overlay{position:fixed;inset:0;background:rgba(0,0,0,.32);z-index:10}
.site-header.nav-open .nav-toggle{border-color:var(--color-accent,#0f7490)}
.site-nav nav{flex-shrink:1}
.site-nav nav ul{list-style:none;display:flex;gap:0.5rem;margin:0;padding:0;flex-wrap:wrap}
.site-nav nav a{text-decoration:none;color:var(--color-text-primary,#1f2937);font-weight:600;font-size:0.95rem;white-space:nowrap}
/* Layout columna solo en móvil */
@media (max-width:767px){
.site-header .site-nav__panel nav ul{flex-direction:column;gap:.25rem}
.site-header .site-nav__panel nav a{display:block;padding:.5rem 0}
}
.lang-switcher{display:flex;gap:0.25rem;align-items:center;flex-shrink:0}
.lang-switcher ul{list-style:none;margin:0;padding:0;display:flex;gap:0.25rem}
.lang-switcher li{margin:0;padding:0}
.lang-switcher a{display:inline-block;opacity:0.7;transition:opacity .2s}
.lang-switcher a:hover,.lang-switcher a.current-lang{opacity:1}
.lang-switcher img{height:16px;width:auto;display:block}
@media (min-width:768px){.site-header{padding:1rem 0}.site-header__inner{gap:1rem}.brand{font-size:1.5rem;flex-basis:auto}.nav-toggle{display:none}.site-nav__panel{display:flex;width:auto;align-items:center;gap:1rem;max-height:none;opacity:1;transform:none;visibility:visible}.site-nav{gap:1rem;justify-content:flex-end;width:auto}.site-nav nav ul{flex-direction:row;gap:0.75rem}.site-nav nav a{font-size:1rem;padding:0}.lang-switcher img{height:18px}}
@media (min-width:1024px){.site-nav nav ul{gap:1rem}.site-nav nav a{font-size:1rem}}

/* Hero section - LCP target (claro) */
.hero{background:linear-gradient(135deg,#FDFDFD 0%,#F0F4F8 100%);color:var(--color-text-primary,#1f2937);padding:2rem 1rem;text-align:center;min-height:280px;display:flex;align-items:center;justify-content:center}
.hero .container{max-width:800px;margin:0 auto;padding:0 1rem}
.hero h1{font-size:clamp(1.75rem,5vw,3.5rem);font-weight:700;margin-bottom:1rem;line-height:1.2;font-family:Montserrat,system-ui,sans-serif}
.hero .subtitle{font-size:clamp(1rem,2.5vw,1.5rem);margin-bottom:1.5rem;opacity:0.95;line-height:1.5;color:var(--color-text-secondary,#4b5563)}
.hero .btn{display:inline-block;background:var(--color-accent,#0f7490);color:var(--color-text-inverse,#fff);padding:0.875rem 2rem;border-radius:0.5rem;text-decoration:none;font-weight:700;transition:transform .2s,box-shadow .2s;min-width:140px;text-align:center}
.hero .btn:hover{box-shadow:var(--shadow-xs,0 4px 12px rgba(13,27,42,.08));transform:translateY(-1px)}
@media (min-width:768px){.hero{padding:4rem 1rem;min-height:360px}.hero .subtitle{margin-bottom:2rem}}

/* Container utility */
.container{max-width:var(--max-width-content,1200px);margin:0 auto;padding:0 1rem}

/* Skip link for a11y */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}
.sr-only.focusable:focus{position:static;width:auto;height:auto;overflow:visible;clip:auto;white-space:normal}