/* ADCM — site.css
 * Hoja base sobre tokens.css. Sin framework, sin Tailwind, sin dependencias.
 */

/* ---------------------------------------------------------------- reset */

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  overflow-x: clip;          /* red de seguridad, no sustituto de arreglar la causa */
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* Compensa el header fijo; el hero se mete debajo con margin negativo. */
  padding-top: var(--header-h);
  /* Sticky footer: en paginas cortas (404, legales) el footer cierra el viewport
     en vez de dejar asomar el fondo del body debajo. */
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100svh;
}

main { flex: 1 0 auto; }

img, picture, video, svg { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; color: inherit; }
p, li { text-wrap: pretty; }
h1, h2, h3 { text-wrap: balance; }

/* ---------------------------------------------------------------- tipografía */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
}

h1 { font-size: var(--step-4); overflow-wrap: break-word; }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-1); }

.lede {
  font-size: var(--step-1);
  line-height: var(--leading-snug);
  color: var(--text-muted);
  max-width: var(--measure);
}

.eyebrow {
  font-family: var(--font-body);
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
}

a { color: var(--teal); text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
a:hover { color: var(--green); }

:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  padding: var(--space-s) var(--space-m);
  background: var(--green);
  color: var(--text-on-accent);
  font-weight: 600;
  z-index: 100;
}
.skip-link:focus { left: var(--space-m); top: var(--space-m); }

/* ---------------------------------------------------------------- layout */

.container {
  width: min(100% - 2 * var(--space-l), var(--container));
  margin-inline: auto;
}
.container--narrow { max-width: var(--container-narrow); }

.section { padding-block: var(--space-3xl); }
.section--center { text-align: center; }
.section--tight { padding-block: var(--space-2xl); }

/* ---------------------------------------------------------------- botones */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-s) var(--space-l);
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}
.btn:hover { transform: translateY(-1px); }

/* El verde va aquí: área pequeña, alta intención. Texto casi-negro sobre verde = 12.7x. */
.btn--accent { background: var(--green); color: var(--text-on-accent); }
.btn--accent:hover { background: #2BFF30; color: var(--text-on-accent); }

.btn--ghost { border-color: var(--border); color: var(--text); }
.btn--ghost:hover { border-color: var(--teal); color: var(--teal); }

.btn--sm { padding: var(--space-xs) var(--space-m); font-size: var(--step--1); }

/* ---------------------------------------------------------------- header */

/* Header FIJO y transparente sobre el hero; gana fondo al scrollear (el JS del
   shell pone .is-scrolled). Sin JS el fondo queda siempre puesto: nada ilegible. */
.site-header {
  position: fixed;
  top: 0; inset-inline: 0;
  z-index: 50;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.site-header.is-scrolled,
html:not(.js) .site-header {
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-l);
  padding-block: var(--space-s);
}

.site-header__brand img { width: 160px; height: auto; }

.site-header__actions { display: flex; align-items: center; gap: var(--space-m); }

/* ------------------------------------------------ burger kinetic (Sterling Gate)
   Destilado de 21st.dev #10003: textos Menu/Close que se intercambian con máscara
   e ícono + que rota 315°. El estado vive en #nav-toggle (checkbox, cero JS). */

.nav-burger {
  display: flex; align-items: center; gap: var(--space-s);
  padding: 7px 7px 7px var(--space-m);
  border: 1px solid var(--text-muted);
  border-radius: 999px;
  cursor: pointer;
  color: var(--text);
  transition: border-color var(--dur) var(--ease);
}
.nav-burger:hover { border-color: var(--teal); }
.nav-burger__text {
  display: block; overflow: hidden;
  height: 1.4em; line-height: 1.4;
  font-size: var(--step--1); font-weight: 500;
}
.nav-burger__text span { display: block; transition: translate .7s var(--ease-nav); }
.nav-burger__icon {
  display: grid; place-items: center;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--surface-2);
}
.nav-burger__icon svg { transition: rotate .7s var(--ease-nav); }

#nav-toggle:checked ~ .site-header .nav-burger__text span { translate: 0 -100%; }
#nav-toggle:checked ~ .site-header .nav-burger__icon svg { rotate: 315deg; }
/* Abierto, el botón debe quedar SOBRE el panel para poder cerrar. */
#nav-toggle:checked ~ .site-header { z-index: 100; background: transparent; border-bottom-color: transparent; backdrop-filter: none; }
#nav-toggle:checked ~ .site-header .site-header__cta { opacity: 0; pointer-events: none; }
.site-header__cta { transition: opacity var(--dur) var(--ease); }

/* ------------------------------------------------ overlay de navegación kinetic */

.kinetic-nav {
  position: fixed; inset: 0; z-index: 90;
  visibility: hidden;
  transition: visibility 0s .8s;
}
#nav-toggle:checked ~ .kinetic-nav { visibility: visible; transition-delay: 0s; }

.kinetic-nav__overlay {
  position: absolute; inset: 0;
  background: rgba(10,10,11,.55);
  opacity: 0; cursor: pointer;
  transition: opacity .5s var(--ease-nav);
}
#nav-toggle:checked ~ .kinetic-nav .kinetic-nav__overlay { opacity: 1; }

/* Panel derecho con tres capas de fondo escalonadas (la firma del componente). */
.kinetic-nav__panel {
  position: absolute; top: 0; right: 0; bottom: 0;
  width: min(600px, 100%);
  display: flex; flex-direction: column; justify-content: center;
  padding: var(--space-3xl) var(--space-2xl);
  overflow: hidden;
}
.kinetic-nav__bg { position: absolute; inset: 0; z-index: -1; }
.kinetic-nav__layer {
  position: absolute; inset: 0;
  translate: 102% 0;
  transition: translate .575s var(--ease-nav);
}
.kinetic-nav__layer:nth-child(1) { background: var(--teal); }
.kinetic-nav__layer:nth-child(2) { background: var(--surface-2); }
.kinetic-nav__layer--grid { background: var(--surface); }
/* La retícula teal del hero, para que el menú hable el mismo idioma del sistema. */
.kinetic-nav__layer--grid::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(to right,  rgba(126,216,207,.10) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(126,216,207,.10) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(120% 90% at 80% 10%, #000 5%, transparent 70%);
          mask-image: radial-gradient(120% 90% at 80% 10%, #000 5%, transparent 70%);
}
#nav-toggle:checked ~ .kinetic-nav .kinetic-nav__layer { translate: 0 0; }
#nav-toggle:checked ~ .kinetic-nav .kinetic-nav__layer:nth-child(1) { transition-delay: 0s; }
#nav-toggle:checked ~ .kinetic-nav .kinetic-nav__layer:nth-child(2) { transition-delay: .1s; }
#nav-toggle:checked ~ .kinetic-nav .kinetic-nav__layer:nth-child(3) { transition-delay: .2s; }

/* Formas ambientales: se revelan al hover del item correspondiente vía :has(). */
.kinetic-nav__shape {
  position: absolute; inset: auto 0 0 auto;
  width: min(400px, 90%); height: auto; aspect-ratio: 1;
  opacity: 0; scale: .85; rotate: -6deg;
  transition: opacity .45s var(--ease), scale .45s cubic-bezier(0.34, 1.56, 0.64, 1), rotate .45s var(--ease);
  pointer-events: none;
}
.kinetic-nav__panel:has([data-shape="1"]:hover) .kinetic-nav__shape--1,
.kinetic-nav__panel:has([data-shape="2"]:hover) .kinetic-nav__shape--2,
.kinetic-nav__panel:has([data-shape="3"]:hover) .kinetic-nav__shape--3,
.kinetic-nav__panel:has([data-shape="4"]:hover) .kinetic-nav__shape--4,
.kinetic-nav__panel:has([data-shape="5"]:hover) .kinetic-nav__shape--5 { opacity: 1; scale: 1; rotate: 0deg; }

/* Links: tipografía display gigante que sube con máscara y rotación. */
.kinetic-nav__list { list-style: none; margin: 0; padding: 0; }
.kinetic-nav__item a {
  display: flex; align-items: baseline; gap: var(--space-m);
  text-decoration: none; color: var(--text);
  padding-block: var(--space-2xs);
}
.kinetic-nav__num {
  font-size: var(--step--1); color: var(--teal);
  min-width: 4.5ch;
  opacity: 0; transition: opacity .4s var(--ease) calc(.4s + var(--i) * .06s);
}
#nav-toggle:checked ~ .kinetic-nav .kinetic-nav__num { opacity: .8; }
.kinetic-nav__mask { display: block; overflow: hidden; }
.kinetic-nav__text {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.1rem, 5.2vh, 3.4rem);
  line-height: 1.15;
  letter-spacing: -.01em;
  translate: 0 140%; rotate: 6deg; transform-origin: left top;
  transition: translate .7s var(--ease-nav), rotate .7s var(--ease-nav), color var(--dur) var(--ease);
}
#nav-toggle:checked ~ .kinetic-nav .kinetic-nav__text {
  translate: 0 0; rotate: 0deg;
  transition-delay: calc(.3s + var(--i) * .06s), calc(.3s + var(--i) * .06s), 0s;
}
.kinetic-nav__item a:hover .kinetic-nav__text { color: var(--teal); translate: .35ch 0; }
.kinetic-nav__item a[aria-current="page"] .kinetic-nav__text { color: var(--teal); }

.kinetic-nav__meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-l);
  margin-top: var(--space-2xl);
  opacity: 0; translate: 0 20px;
  transition: opacity .5s var(--ease), translate .5s var(--ease);
}
#nav-toggle:checked ~ .kinetic-nav .kinetic-nav__meta { opacity: 1; translate: 0 0; transition-delay: .55s; }
.kinetic-nav__meta > a:first-child {
  color: var(--text-muted); text-decoration: none; font-size: var(--step--1);
}
.kinetic-nav__meta > a:first-child:hover { color: var(--teal); }

/* Menú abierto: la página de atrás no scrollea. */
html:has(#nav-toggle:checked) { overflow: hidden; }

@media (max-width: 860px) {
  .site-header__cta { display: none; }
  .kinetic-nav__panel { padding: var(--space-2xl) var(--space-l); }
}

/* ---------------------------------------------------------------- footer */

.site-footer {
  margin-top: var(--space-4xl);
  padding-block: var(--space-2xl) var(--space-xl);
  background: var(--surface);
  border-top: 1px solid var(--border);
  font-size: var(--step--1);
}

.site-footer__top {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) 2fr;
  gap: var(--space-2xl);
  padding-bottom: var(--space-xl);
}

.site-footer__tagline { color: var(--text-muted); margin-top: var(--space-s); max-width: 32ch; }

.site-footer__nav {
  display: grid;
  /* min() evita que 3 columnas x 150px exijan 450px y desborden a 375. */
  grid-template-columns: repeat(auto-fit, minmax(min(150px, 100%), 1fr));
  gap: var(--space-l);
}
.site-footer__nav h2 {
  font-family: var(--font-body);
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-s);
}
.site-footer__nav a {
  display: block;
  color: var(--text);
  text-decoration: none;
  padding-block: 2px;
}
.site-footer__nav a:hover { color: var(--green); }

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: end;
  gap: var(--space-m);
  padding-top: var(--space-l);
  border-top: 1px solid var(--border);
  color: var(--text-muted);
}
.site-footer__legal address { font-style: normal; line-height: var(--leading-snug); }
.site-footer__legal strong { color: var(--text); }

@media (max-width: 860px) {
  .site-footer__top { grid-template-columns: 1fr; gap: var(--space-xl); }
}