/* =============================================================
   ARS — Asociación para el Estudio de Residuos Sólidos
   Sitio institucional · estilo editorial moderno y limpio
   Un solo archivo, organizado por secciones.
   ============================================================= */

/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  /* Paleta — ambiental clara y moderna */
  --paper:       #f7f6f1;   /* fondo cálido off-white */
  --paper-2:     #efece3;   /* arena suave */
  --surface:     #ffffff;
  --surface-2:   #faf9f4;

  --ink:         #17241c;   /* verde casi negro */
  --ink-soft:    #33473b;
  --ink-mute:    #6a7a70;

  --green:       #2e7d52;   /* acento principal */
  --green-deep:  #1f5a3a;
  --green-soft:  #e8f0e9;
  --green-bright:#5cae7a;
  --earth:       #b6883c;   /* acento cálido secundario */

  --line:        rgba(23, 36, 28, 0.12);
  --line-strong: rgba(23, 36, 28, 0.22);

  --shadow-sm: 0 1px 2px rgba(23, 36, 28, 0.06), 0 2px 6px rgba(23, 36, 28, 0.05);
  --shadow-md: 0 6px 18px rgba(23, 36, 28, 0.08), 0 2px 6px rgba(23, 36, 28, 0.05);
  --shadow-lg: 0 24px 60px rgba(23, 36, 28, 0.14), 0 8px 20px rgba(23, 36, 28, 0.08);
  --shadow-green: 0 22px 50px rgba(31, 90, 58, 0.20);

  --radius:    18px;
  --radius-sm: 12px;
  --radius-lg: 26px;

  --container: 1200px;
  --gutter: clamp(1.15rem, 4vw, 2.75rem);
  --nav-h: 280px;

  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;

  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:     cubic-bezier(0.7, 0, 0.84, 0);
  --ease-soft:   cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html {
  -webkit-text-size-adjust: 100%;
  tab-size: 2;
  overflow-x: clip;
  scroll-behavior: smooth;
}
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink-soft);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  overscroll-behavior-y: none;
}
img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; padding: 0; }
p { text-wrap: pretty; }
h1, h2, h3, h4 {
  font-family: var(--serif);
  color: var(--ink);
  text-wrap: balance;
  line-height: 1.06;
  letter-spacing: -0.015em;
  font-weight: 500;
}
strong { color: var(--ink); font-weight: 600; }
::selection { background: var(--green); color: #fff; }

:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Page transitions */
@view-transition { navigation: auto; }
::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 0.5s;
  animation-timing-function: var(--ease-out);
}
::view-transition-old(root) { animation-name: vtOut; }
::view-transition-new(root) { animation-name: vtIn; }
@keyframes vtOut { to { opacity: 0; transform: translateY(-10px); } }
@keyframes vtIn  { from { opacity: 0; transform: translateY(12px); } }

/* =============================================================
   3. Utilities
   ============================================================= */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.container-wide { max-width: 1360px; }
.container-narrow { max-width: 780px; }

.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: .6rem 1rem; background: var(--ink); color: var(--paper);
  z-index: 9999; border-radius: 8px; font-weight: 600;
}
.skip-link:focus { top: 1rem; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.kicker {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--sans);
  font-size: .74rem; font-weight: 600;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--green-deep);
}
.kicker::before {
  content: ""; width: 26px; height: 1.5px; background: var(--green);
  display: inline-block;
}
.kicker.is-center::after {
  content: ""; width: 26px; height: 1.5px; background: var(--green);
  display: inline-block;
}

.eyebrow { color: var(--green-deep); font-weight: 600; }
.text-muted { color: var(--ink-mute); }
.only-mobile { display: none; }
@media (max-width: 1023px) { .only-mobile { display: block; } }
.lead { font-size: clamp(1.08rem, 2.2vw, 1.32rem); line-height: 1.6; color: var(--ink-soft); }

/* =============================================================
   4. Typography scale
   ============================================================= */
.display {
  font-size: clamp(2.5rem, 6.4vw, 5rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
}
.h-xl { font-size: clamp(2rem, 4.6vw, 3.3rem); }
.h-lg { font-size: clamp(1.7rem, 3.4vw, 2.5rem); }
.h-md { font-size: clamp(1.35rem, 2.4vw, 1.7rem); }
em, .italic { font-style: italic; }
.accent { color: var(--green-deep); }

/* =============================================================
   5. Components
   ============================================================= */

/* Buttons */
.btn {
  --btn-bg: var(--green);
  --btn-fg: #fff;
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  font-family: var(--sans); font-size: .95rem; font-weight: 600;
  padding: .82rem 1.55rem; border-radius: 100px;
  background: var(--btn-bg); color: var(--btn-fg);
  border: 1.5px solid transparent;
  transition: transform .35s var(--ease-out), box-shadow .35s var(--ease-out),
              background .3s var(--ease-out), color .3s var(--ease-out);
  will-change: transform;
}
.btn svg { width: 1.05em; height: 1.05em; }
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-green); }
.btn-primary { --btn-bg: var(--green); }
.btn-dark { --btn-bg: var(--ink); }
.btn-ghost {
  --btn-bg: transparent; --btn-fg: var(--ink);
  border-color: var(--line-strong);
}
.btn-ghost:hover { border-color: var(--green); color: var(--green-deep); box-shadow: none; background: var(--green-soft); }
.btn-light {
  --btn-bg: rgba(255,255,255,0.14); --btn-fg: #fff;
  border-color: rgba(255,255,255,0.35);
  backdrop-filter: blur(6px);
}
.btn-light:hover { background: #fff; color: var(--ink); }
.btn-sm { padding: .55rem 1.1rem; font-size: .85rem; }

.link-arrow {
  display: inline-flex; align-items: center; gap: .4rem;
  font-weight: 600; color: var(--green-deep);
  border-bottom: 1.5px solid transparent;
  transition: gap .3s var(--ease-out), border-color .3s var(--ease-out);
}
.link-arrow svg { width: 1em; height: 1em; transition: transform .3s var(--ease-out); }
.link-arrow:hover { gap: .65rem; border-color: var(--green); }
.link-arrow:hover svg { transform: translateX(3px); }

/* Cards — generic */
.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .45s var(--ease-out), box-shadow .45s var(--ease-out),
              border-color .45s var(--ease-out);
  display: flex; flex-direction: column;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.card-media { position: relative; overflow: hidden; aspect-ratio: 16 / 10; background: var(--paper-2); }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease-out); }
.card:hover .card-media img { transform: scale(1.06); }
.card-body { padding: 1.35rem 1.4rem 1.5rem; display: flex; flex-direction: column; gap: .6rem; flex: 1; }
.card-meta { display: flex; align-items: center; gap: .6rem; font-size: .78rem; color: var(--ink-mute); font-weight: 500; }
.card-title { font-size: 1.22rem; color: var(--ink); line-height: 1.18; }
.card-excerpt { font-size: .95rem; color: var(--ink-soft); }
.card-foot { margin-top: auto; padding-top: .4rem; }

.tag {
  display: inline-block;
  font-size: .68rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--green-deep); background: var(--green-soft);
  padding: .28rem .6rem; border-radius: 6px;
}
.tag.is-earth { color: #7a5a1f; background: #f4ead2; }

/* Chips (filters) */
.chip-row { display: flex; flex-wrap: wrap; gap: .55rem; }
.chip {
  font-size: .85rem; font-weight: 600;
  padding: .48rem 1rem; border-radius: 100px;
  background: var(--surface); border: 1px solid var(--line);
  color: var(--ink-soft);
  transition: all .3s var(--ease-out);
}
.chip:hover { border-color: var(--green); color: var(--green-deep); }
.chip.is-active { background: var(--ink); color: #fff; border-color: var(--ink); }

/* Forms */
.field { display: flex; flex-direction: column; gap: .4rem; }
.field label { font-size: .82rem; font-weight: 600; color: var(--ink); }
.field input, .field textarea, .field select {
  font: inherit; font-size: .95rem;
  padding: .8rem 1rem; border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong); background: var(--surface);
  color: var(--ink); width: 100%;
  transition: border-color .3s var(--ease-out), box-shadow .3s var(--ease-out);
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--green);
  box-shadow: 0 0 0 3px var(--green-soft);
}
.field textarea { resize: vertical; min-height: 120px; }

/* =============================================================
   6. Navigation
   ============================================================= */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-h);
  display: flex; align-items: center;
  transition: background .4s var(--ease-out), box-shadow .4s var(--ease-out),
              border-color .4s var(--ease-out);
  border-bottom: 1px solid transparent;
}
.nav-inner { width: 100%; max-width: 1360px; margin-inline: auto; padding-inline: var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
/* solid state (default for interior pages; hero pages start transparent) */
.nav.is-solid, .nav:not(.nav-over-hero) {
  background: rgba(247, 246, 241, 0.86);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom-color: var(--line);
  box-shadow: 0 2px 20px rgba(23, 36, 28, 0.05);
}
.nav-over-hero:not(.is-solid) { --nav-fg: #fff; }
.nav-over-hero:not(.is-solid) .nav-link { color: rgba(255,255,255,0.92); }
.nav-over-hero:not(.is-solid) .nav-toggle span { background: #fff; }

/* El logo y la barra se achican en proporción al scroll (ver main.js,
   que calcula --nav-h y --logo-h en cada instante). Grandes al llegar
   a la página, chicos apenas se empieza a navegar. */

.brand { display: inline-flex; align-items: center; gap: .6rem; }
.brand-chip {
  display: inline-flex; align-items: center; justify-content: center;
  background: #fff; border-radius: 12px; padding: .4rem .6rem;
  box-shadow: var(--shadow-md);
  transition: transform .3s var(--ease-out), box-shadow .3s var(--ease-out);
}
.brand:hover .brand-chip { transform: translateY(-1px); box-shadow: var(--shadow-lg); }
.brand-mark-img { height: var(--logo-h, 250px); width: auto; display: block; }
.brand-chip-footer { padding: .5rem .75rem; }
.brand-chip-footer .brand-mark-img { height: 190px; }

.nav-menu { display: flex; align-items: center; gap: .1rem; }
.nav-item { position: relative; }
.nav-link {
  display: inline-flex; align-items: center; gap: .25rem;
  padding: .4rem .6rem; border-radius: 8px;
  font-size: .82rem; font-weight: 500; color: var(--ink-soft);
  transition: color .25s var(--ease-out), background .25s var(--ease-out);
  position: relative;
}
.nav-link::after {
  content: ""; position: absolute; left: .8rem; right: .8rem; bottom: .32rem; height: 1.5px;
  background: var(--green); transform: scaleX(0); transform-origin: left;
  transition: transform .3s var(--ease-out);
}
.nav-link:hover { color: var(--green-deep); }
.nav-link:hover::after,
.nav-link.is-current::after { transform: scaleX(1); }
.nav-link .caret { width: .7em; height: .7em; transition: transform .3s var(--ease-out); }
.nav-item.has-sub:hover .caret,
.nav-item.has-sub:focus-within .caret { transform: rotate(180deg); }

/* Desktop dropdown */
.subnav {
  position: absolute; top: calc(100% + 6px); left: 0;
  min-width: 268px; padding: .5rem;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 14px; box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity .28s var(--ease-out), transform .28s var(--ease-out), visibility .28s;
  z-index: 20;
}
.nav-item.has-sub:hover .subnav,
.nav-item.has-sub:focus-within .subnav { opacity: 1; visibility: visible; transform: translateY(0); }
.subnav a {
  display: block; padding: .65rem .8rem; border-radius: 10px;
  font-size: .9rem; color: var(--ink-soft); font-weight: 500;
  transition: background .22s var(--ease-out), color .22s var(--ease-out);
}
.subnav a small { display: block; font-size: .76rem; color: var(--ink-mute); font-weight: 400; margin-top: 1px; }
.subnav a:hover { background: var(--green-soft); color: var(--green-deep); }

.nav-cta { display: inline-flex; align-items: center; gap: .7rem; }
.nav-toggle { display: none; width: 38px; height: 38px; flex-direction: column; justify-content: center; align-items: center; gap: 4px; border-radius: 9px; }
.nav-toggle span { width: 19px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .3s var(--ease-out), opacity .3s var(--ease-out); }
body.menu-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.menu-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.menu-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =============================================================
   7. Sections — shared
   ============================================================= */
.section { padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.section-tight { padding-block: clamp(2.5rem, 5vw, 4rem); }
.section-head { max-width: 640px; margin-bottom: clamp(2rem, 4vw, 3rem); }
.section-head.is-center { margin-inline: auto; text-align: center; }
.section-head h2 { margin-top: 1rem; }
.section-head p { margin-top: .9rem; }
.section-head .kicker.is-center { justify-content: center; }
.head-flex { display: flex; align-items: flex-end; justify-content: space-between; gap: 2rem; flex-wrap: wrap; }

.surface-alt { background: var(--paper-2); }
.surface-ink { background: var(--ink); color: rgba(255,255,255,0.8); }
.surface-ink h1, .surface-ink h2, .surface-ink h3 { color: #fff; }
.surface-green { background: var(--green-soft); }

/* =============================================================
   8. HERO (home)
   ============================================================= */
.hero {
  position: relative;
  min-height: 92vh; min-height: 92svh;
  display: flex; align-items: flex-end;
  padding-top: calc(var(--nav-h) + 2rem); padding-bottom: clamp(3rem, 7vw, 5.5rem);
  overflow: hidden;
  color: #fff;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.06); will-change: transform; }
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(15, 30, 20, 0.30) 0%, rgba(15, 30, 20, 0.12) 32%, rgba(13, 26, 18, 0.78) 100%),
    linear-gradient(90deg, rgba(13, 26, 18, 0.55) 0%, transparent 60%);
}
.hero-inner { position: relative; z-index: 2; width: 100%; }
.hero-eyebrow { display: inline-flex; align-items: center; gap: .55rem; font-size: .78rem; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: #d6ecdd; }
.hero-eyebrow::before { content: ""; width: 28px; height: 1.5px; background: var(--green-bright); }
.hero-title { color: #fff; font-size: clamp(2rem, 4.8vw, 3.9rem); line-height: 1.08; letter-spacing: -0.022em; margin-top: 1.1rem; max-width: 24ch; }
.hero-title em { color: var(--green-bright); font-weight: 400; }
.hero-sub { margin-top: 1.35rem; max-width: 52ch; font-size: clamp(1.02rem, 1.7vw, 1.2rem); color: rgba(255,255,255,0.9); line-height: 1.55; }
.hero-actions { margin-top: 2rem; display: flex; flex-wrap: wrap; gap: .8rem; }
.hero-scroll { position: absolute; z-index: 2; bottom: 1.4rem; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: .5rem; font-size: .7rem; letter-spacing: .15em; text-transform: uppercase; color: rgba(255,255,255,0.7); }
.hero-scroll .mouse { width: 22px; height: 34px; border: 1.5px solid rgba(255,255,255,0.5); border-radius: 12px; position: relative; }
.hero-scroll .mouse::after { content: ""; position: absolute; top: 6px; left: 50%; width: 3px; height: 6px; border-radius: 3px; background: #fff; transform: translateX(-50%); animation: scrollDot 1.8s var(--ease-out) infinite; }
@keyframes scrollDot { 0% { opacity: 0; transform: translate(-50%, 0); } 40% { opacity: 1; } 80% { opacity: 0; transform: translate(-50%, 10px); } 100% { opacity: 0; } }

/* stats bar under hero */
.stats {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
}
.stat { background: var(--surface); padding: 1.5rem 1.4rem; }
.stat b { display: block; font-family: var(--serif); font-size: clamp(2rem, 5vw, 3rem); color: var(--green-deep); line-height: 1; letter-spacing: -0.02em; }
.stat span { display: block; margin-top: .5rem; font-size: .85rem; color: var(--ink-mute); font-weight: 500; }

/* =============================================================
   9. Interior page hero
   ============================================================= */
.page-hero {
  position: relative;
  padding-top: calc(var(--nav-h) + clamp(2.6rem, 6vw, 4.5rem));
  padding-bottom: clamp(2.4rem, 5vw, 3.8rem);
  background: var(--paper-2);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; right: -6%; top: -40%;
  width: 460px; height: 460px; border-radius: 50%;
  background: radial-gradient(circle, rgba(92,174,122,0.22), transparent 66%);
  pointer-events: none;
}
.page-hero .breadcrumb { margin-bottom: 1rem; }
.page-hero h1 { font-size: clamp(2.1rem, 5vw, 3.5rem); max-width: 20ch; }
.page-hero p { margin-top: 1rem; max-width: 60ch; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: .45rem; align-items: center; font-size: .82rem; color: var(--ink-mute); }
.breadcrumb a:hover { color: var(--green-deep); }
.breadcrumb .sep { opacity: .5; }
.breadcrumb b { color: var(--ink-soft); font-weight: 600; }

/* Page hero with image variant */
.page-hero.has-img { color: #fff; background: var(--ink); border-bottom: 0; }
.page-hero.has-img::before { display: none; }
.page-hero.has-img .page-hero-bg { position: absolute; inset: 0; z-index: 0; }
.page-hero.has-img .page-hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.page-hero.has-img .page-hero-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(15,28,20,0.5), rgba(13,24,17,0.82)); }
.page-hero.has-img .container { position: relative; z-index: 2; }
.page-hero.has-img h1 { color: #fff; }
.page-hero.has-img p { color: rgba(255,255,255,0.9); }
.page-hero.has-img .breadcrumb, .page-hero.has-img .breadcrumb b { color: rgba(255,255,255,0.75); }

/* =============================================================
   10. Grids
   ============================================================= */
.grid { display: grid; gap: clamp(1.1rem, 2.5vw, 1.6rem); }
.grid-3 { grid-template-columns: 1fr; }
.grid-2 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: repeat(2, 1fr); }

/* Feature / value cards */
.feature {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.7rem 1.6rem;
  transition: transform .4s var(--ease-out), box-shadow .4s var(--ease-out), border-color .4s;
  height: 100%;
}
.feature:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: transparent; }
.feature-ico {
  width: 48px; height: 48px; border-radius: 12px;
  display: grid; place-items: center; margin-bottom: 1.1rem;
  background: var(--green-soft); color: var(--green-deep);
}
.feature-ico svg { width: 24px; height: 24px; }
.feature h3 { font-size: 1.2rem; margin-bottom: .5rem; }
.feature p { font-size: .95rem; }
.feature .num { font-family: var(--serif); font-size: 1rem; color: var(--earth); font-weight: 600; }

/* Split / two column editorial */
.split { display: grid; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.split-media { position: relative; }
.split-media img { width: 100%; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); aspect-ratio: 4/3; object-fit: cover; }
.split-media .badge {
  position: absolute; bottom: -18px; left: -18px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1rem 1.3rem; box-shadow: var(--shadow-md);
  display: flex; align-items: center; gap: .8rem; max-width: 76%;
}
.split-media .badge b { font-family: var(--serif); font-size: 1.8rem; color: var(--green-deep); line-height: 1; }
.split-media .badge span { font-size: .8rem; color: var(--ink-mute); }
.prose > * + * { margin-top: 1.1rem; }
.prose p { font-size: 1.02rem; color: var(--ink-soft); }
.prose h2 { margin-top: 2rem; }
.prose h3 { margin-top: 1.6rem; font-size: 1.3rem; }
.prose ul { display: flex; flex-direction: column; gap: .6rem; }
.prose ul li { position: relative; padding-left: 1.6rem; color: var(--ink-soft); }
.prose ul li::before { content: ""; position: absolute; left: 0; top: .62em; width: 8px; height: 8px; border-radius: 50%; background: var(--green); }
.prose blockquote {
  border-left: 3px solid var(--green); padding: .4rem 0 .4rem 1.4rem;
  font-family: var(--serif); font-style: italic; font-size: 1.35rem; color: var(--ink);
}

/* =============================================================
   11. Partner logos
   ============================================================= */
.logos {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: clamp(.8rem, 2vw, 1.2rem);
}
.logo-cell {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 14px; padding: .9rem 1rem;
  display: grid; place-items: center;
  transition: transform .4s var(--ease-out), box-shadow .4s var(--ease-out), border-color .4s;
  aspect-ratio: 3 / 2;
}
.logo-cell img { width: 100%; height: 100%; max-height: 110px; object-fit: contain; transition: transform .4s var(--ease-out); }
.logo-cell:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; }
.logo-cell:hover img { transform: scale(1.04); }
/* Logos con margen blanco incorporado en el archivo: se amplían para igualar al resto */
.logo-cell img[src*="marino"] { transform: scale(1.45); }
.logo-cell:hover img[src*="marino"] { transform: scale(1.51); }
a.logo-cell { cursor: pointer; }

/* =============================================================
   12. Marquee
   ============================================================= */
.marquee { overflow: hidden; border-block: 1px solid var(--line); background: var(--surface-2); padding-block: 1.1rem; }
.marquee-track { display: flex; gap: 3rem; width: max-content; animation: marquee 38s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-item { display: inline-flex; align-items: center; gap: 1rem; font-family: var(--serif); font-size: 1.25rem; color: var(--ink-mute); white-space: nowrap; }
.marquee-item::after { content: "✿"; color: var(--green-bright); font-size: .8rem; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* =============================================================
   13. Contact
   ============================================================= */
.contact-grid { display: grid; gap: clamp(1.5rem, 4vw, 3rem); }
.contact-info { display: flex; flex-direction: column; gap: 1.2rem; }
.contact-item { display: flex; gap: .95rem; align-items: flex-start; }
.contact-item .ci-ico { width: 44px; height: 44px; flex: none; border-radius: 12px; display: grid; place-items: center; background: var(--green-soft); color: var(--green-deep); }
.contact-item .ci-ico svg { width: 22px; height: 22px; }
.contact-item h4 { font-family: var(--sans); font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-mute); font-weight: 600; margin-bottom: .2rem; }
.contact-item p, .contact-item a { color: var(--ink); font-weight: 500; }
.contact-item a:hover { color: var(--green-deep); }
.contact-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: clamp(1.5rem, 4vw, 2.4rem); box-shadow: var(--shadow-sm); }
.map-embed { border: 0; width: 100%; height: 100%; min-height: 260px; border-radius: var(--radius); filter: grayscale(0.2); }

/* =============================================================
   14. CTA band
   ============================================================= */
.cta-band { position: relative; overflow: hidden; border-radius: var(--radius-lg); padding: clamp(2.5rem, 6vw, 4rem); background: var(--ink); color: rgba(255,255,255,0.85); }
.cta-band::before { content: ""; position: absolute; right: -10%; top: -60%; width: 420px; height: 420px; border-radius: 50%; background: radial-gradient(circle, rgba(92,174,122,0.35), transparent 65%); }
.cta-band .inner { position: relative; z-index: 2; max-width: 640px; }
.cta-band h2 { color: #fff; }
.cta-band p { margin-top: .8rem; }
.cta-band .hero-actions { margin-top: 1.7rem; }

/* =============================================================
   15. Diploma / course specifics
   ============================================================= */
.course-meta { display: flex; flex-wrap: wrap; gap: 1.4rem; margin-top: 1.6rem; }
.course-meta .cm { display: flex; align-items: center; gap: .55rem; font-size: .92rem; font-weight: 500; color: var(--ink); }
.course-meta .cm svg { width: 18px; height: 18px; color: var(--green); }
.module-list { counter-reset: mod; display: flex; flex-direction: column; gap: .8rem; }
.module {
  display: flex; gap: 1rem; align-items: flex-start;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.2rem 1.3rem;
  transition: border-color .3s var(--ease-out), box-shadow .3s var(--ease-out);
}
.module:hover { border-color: var(--green); box-shadow: var(--shadow-sm); }
.module::before { counter-increment: mod; content: counter(mod, decimal-leading-zero); font-family: var(--serif); font-size: 1.15rem; color: var(--green); font-weight: 600; flex: none; }
.module h4 { font-family: var(--sans); font-size: 1rem; color: var(--ink); margin-bottom: .25rem; font-weight: 600; }
.module p { font-size: .9rem; }

.sidecard { position: sticky; top: calc(var(--nav-h) + 1.2rem); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 1.6rem; box-shadow: var(--shadow-sm); }
.sidecard h3 { font-size: 1.25rem; margin-bottom: 1rem; }
.sidecard .price { font-family: var(--serif); font-size: 2rem; color: var(--green-deep); }
.spec-row { display: flex; justify-content: space-between; gap: 1rem; padding: .65rem 0; border-bottom: 1px solid var(--line); font-size: .9rem; }
.spec-row:last-of-type { border-bottom: 0; }
.spec-row span:first-child { color: var(--ink-mute); }
.spec-row span:last-child { color: var(--ink); font-weight: 600; text-align: right; }

/* Listas largas de contenidos: dos columnas en pantallas anchas.
   El selector lleva `.prose ul` para ganarle en especificidad al display:flex de .prose ul */
.prose ul.list-cols, .list-cols { display: block; columns: 2; column-gap: 2.4rem; }
.prose ul.list-cols li, .list-cols li { break-inside: avoid; margin-bottom: .62rem; }
@media (max-width: 760px) { .prose ul.list-cols, .list-cols { columns: 1; } }

/* Encabezado de bloque dentro de una lista de módulos */
.block-head { display: flex; align-items: baseline; gap: .7rem; flex-wrap: wrap; margin-top: 1.4rem; }
.block-head:first-child { margin-top: 0; }
.block-head b { font-family: var(--serif); font-size: 1.05rem; color: var(--green); }
.block-head span { font-weight: 600; color: var(--ink); }

/* Bloque desplegable para textos extensos */
.more { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); padding: 0 1.3rem; }
.more > summary { cursor: pointer; padding: 1rem 0; font-weight: 600; font-size: .95rem; color: var(--green-deep); list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.more > summary::-webkit-details-marker { display: none; }
.more > summary::after { content: "+"; font-size: 1.4rem; line-height: 1; color: var(--green); }
.more[open] > summary { border-bottom: 1px solid var(--line); }
.more[open] > summary::after { content: "\2013"; }
.more > *:not(summary) { margin-top: 1rem; }
.more > *:last-child { margin-bottom: 1.3rem; }

/* Tarjetas de aranceles */
.fee-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 270px), 1fr)); gap: 1rem; }
.fee { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 1.5rem 1.4rem; }
.fee.is-highlight { border-color: var(--green); }
.fee h4 { font-size: 1.02rem; margin-bottom: 1rem; }
.fee .amount { display: block; font-family: var(--serif); font-size: 1.55rem; color: var(--green-deep); line-height: 1.15; }
.fee .amount small { display: block; font-family: var(--sans); font-size: .82rem; color: var(--ink-mute); font-weight: 500; margin-top: .2rem; }
.fee .amount + .amount { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--line); }

/* Miembros nacionales ISWA LAC: bandera + logo */
.member-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); gap: 1rem; }
.member {
  display: flex; align-items: center; gap: 1.1rem;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.1rem 1.2rem;
  transition: transform .4s var(--ease-out), box-shadow .4s var(--ease-out), border-color .4s;
}
.member:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--green); }
.member .flag { flex: none; width: 54px; height: 36px; border-radius: 4px; overflow: hidden; border: 1px solid var(--line); background: #fff; }
.member .flag img { width: 100%; height: 100%; object-fit: cover; display: block; }
.member .m-body { min-width: 0; flex: 1; }
.member .m-country { font-size: .74rem; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; color: var(--ink-mute); }
.member .m-logo { display: block; margin-top: .45rem; max-width: 100%; max-height: 44px; width: auto; height: auto; object-fit: contain; object-position: left center; }
.member .m-name { margin-top: .45rem; font-size: .84rem; color: var(--ink-soft); line-height: 1.35; }

/* Horarios por país */
.tz-row { display: flex; justify-content: space-between; gap: 1rem; padding: .6rem 0; border-bottom: 1px solid var(--line); font-size: .92rem; }
.tz-row:last-child { border-bottom: 0; }
.tz-row span:first-child { color: var(--ink-soft); }
.tz-row span:last-child { font-weight: 600; white-space: nowrap; }

/* =============================================================
   16. Library
   ============================================================= */
.doc-list { display: flex; flex-direction: column; gap: .8rem; }
.doc {
  display: flex; align-items: center; gap: 1.1rem;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.1rem 1.3rem;
  transition: transform .35s var(--ease-out), box-shadow .35s var(--ease-out), border-color .35s;
}
.doc:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: transparent; }
.doc-ico { width: 48px; height: 56px; flex: none; border-radius: 8px; display: grid; place-items: center; background: var(--green-soft); color: var(--green-deep); position: relative; font-size: .6rem; font-weight: 800; letter-spacing: .05em; }
.doc-ico svg { width: 26px; height: 26px; }
.doc-info { flex: 1; min-width: 0; }
.doc-info h4 { font-family: var(--sans); font-size: 1.02rem; color: var(--ink); font-weight: 600; margin-bottom: .2rem; }
.doc-info .doc-meta { display: flex; flex-wrap: wrap; gap: .5rem .9rem; font-size: .8rem; color: var(--ink-mute); }
.doc-dl {
  flex: none; display: inline-flex; align-items: center; gap: .5rem;
  padding: .6rem 1.1rem; border-radius: 100px;
  background: var(--ink); color: #fff; font-size: .85rem; font-weight: 600;
  transition: background .3s var(--ease-out), transform .3s var(--ease-out);
}
.doc-dl svg { width: 1em; height: 1em; }
.doc-dl:hover { background: var(--green); transform: translateY(-1px); }
.cat-block { margin-bottom: 2.5rem; }
.cat-block > h3 { display: flex; align-items: center; gap: .7rem; font-size: 1.35rem; margin-bottom: 1.1rem; padding-bottom: .7rem; border-bottom: 1px solid var(--line); }
.cat-block > h3 .count { font-family: var(--sans); font-size: .8rem; font-weight: 600; color: var(--green-deep); background: var(--green-soft); padding: .2rem .6rem; border-radius: 100px; }
.doc.is-hidden { display: none; }

/* =============================================================
   17. Timeline (antecedentes)
   ============================================================= */
.timeline { position: relative; display: flex; flex-direction: column; gap: 2rem; padding-left: 1.6rem; }
.timeline::before { content: ""; position: absolute; left: 5px; top: .5rem; bottom: .5rem; width: 2px; background: linear-gradient(var(--green), var(--line)); }
.tl-item { position: relative; }
.tl-item::before { content: ""; position: absolute; left: calc(-1.6rem + 1px); top: .35rem; width: 12px; height: 12px; border-radius: 50%; background: var(--green); border: 3px solid var(--paper); box-shadow: 0 0 0 1px var(--green); }
.tl-year { font-family: var(--serif); font-size: 1.4rem; color: var(--green-deep); font-weight: 600; }
.tl-item h4 { font-family: var(--sans); font-size: 1.08rem; color: var(--ink); margin: .2rem 0 .35rem; font-weight: 600; }
.tl-item p { font-size: .95rem; }

/* =============================================================
   17b. Events
   ============================================================= */
.event-list { display: flex; flex-direction: column; gap: 1rem; }
.event {
  display: grid; grid-template-columns: auto 1fr; gap: 1.3rem; align-items: start;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.4rem 1.5rem;
  transition: box-shadow .35s var(--ease-out), transform .35s var(--ease-out), border-color .35s;
}
.event:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: transparent; }
.event-date { text-align: center; background: var(--green-soft); border-radius: 14px; padding: .85rem .9rem; min-width: 78px; }
.event-date .d { font-family: var(--serif); font-size: 1.9rem; color: var(--green-deep); line-height: 1; display: block; }
.event-date .m { font-size: .72rem; text-transform: uppercase; letter-spacing: .1em; color: var(--green-deep); font-weight: 700; margin-top: .25rem; display: block; }
.event-date .y { font-size: .72rem; color: var(--ink-mute); display: block; margin-top: .1rem; }
.event-body h3 { font-size: 1.25rem; }
.event-body > p { margin-top: .5rem; font-size: .96rem; }
.event-place { display: inline-flex; align-items: center; gap: .4rem; font-size: .85rem; color: var(--ink-mute); font-weight: 500; margin-top: .55rem; }
.event-place svg { width: 15px; height: 15px; color: var(--green); }
.event-foot { margin-top: 1.1rem; display: flex; flex-wrap: wrap; gap: .7rem; align-items: center; }

/* =============================================================
   18. Footer
   ============================================================= */
.footer { background: var(--ink); color: rgba(255,255,255,0.72); padding-top: clamp(3rem, 6vw, 4.5rem); }
.footer a { color: rgba(255,255,255,0.72); transition: color .25s var(--ease-out); }
.footer a:hover { color: #fff; }
.footer-top { display: grid; gap: 2.5rem; padding-bottom: 2.5rem; border-bottom: 1px solid rgba(255,255,255,0.12); }
.footer-about { max-width: 34ch; margin-top: 1.1rem; font-size: .92rem; }
.footer-col h5 { font-family: var(--sans); font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: rgba(255,255,255,0.5); font-weight: 600; margin-bottom: 1rem; }
.footer-col ul { display: flex; flex-direction: column; gap: .55rem; font-size: .92rem; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; padding-block: 1.6rem; font-size: .82rem; color: rgba(255,255,255,0.5); }
.footer-bottom a { color: rgba(255,255,255,0.6); }

/* =============================================================
   19. Reveal animations
   ============================================================= */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease-out), transform .8s var(--ease-out); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-split] { opacity: 1; transform: none; }  /* defensive: never hide split text */
.reveal-delay-1 { transition-delay: .08s; }
.reveal-delay-2 { transition-delay: .16s; }
.reveal-delay-3 { transition-delay: .24s; }
.reveal-delay-4 { transition-delay: .32s; }
html:not(.is-ready) .reveal { opacity: 1; transform: none; } /* if JS never boots, show everything */

/* =============================================================
   20. Responsive
   ============================================================= */
@media (min-width: 620px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .logos { grid-template-columns: repeat(3, 1fr); }
  .stats { grid-template-columns: repeat(4, 1fr); }
}
@media (min-width: 720px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}
@media (min-width: 960px) {
  .split { grid-template-columns: 1fr 1fr; }
  .split.is-wide-media { grid-template-columns: 1.1fr .9fr; }
  .logos { grid-template-columns: repeat(4, 1fr); }
  .contact-grid { grid-template-columns: 1.05fr .95fr; }
  .course-layout { display: grid; grid-template-columns: 1fr 340px; gap: clamp(2rem, 4vw, 3.5rem); align-items: start; }
  .footer-top { grid-template-columns: 1.6fr 1fr 1fr 1fr; }
}
@media (min-width: 1024px) {
  .home-lead { display: grid; grid-template-columns: 1.4fr 1fr; gap: 3rem; align-items: end; }
}

/* Mobile nav */
@media (max-width: 1023px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed; inset: var(--nav-h) 0 0 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--paper);
    padding: 1.2rem var(--gutter) 3rem;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform .4s var(--ease-out);
    border-top: 1px solid var(--line);
  }
  body.menu-open .nav-menu { transform: translateX(0); }
  .nav-item { border-bottom: 1px solid var(--line); }
  .nav-link { padding: 1rem .2rem; font-size: 1.05rem; width: 100%; }
  .nav-link::after { display: none; }
  .nav-over-hero:not(.is-solid) .nav-link { color: var(--ink-soft); } /* menu panel is light */
  .nav-item.has-sub .caret { margin-left: auto; }
  .subnav {
    position: static; opacity: 1; visibility: visible; transform: none;
    box-shadow: none; border: 0; background: transparent; padding: 0 0 .8rem .2rem;
    min-width: 0;
  }
  .subnav a { padding: .55rem .7rem; color: var(--ink-mute); }
  .subnav a small { display: none; }
  .nav-cta .btn { display: none; }
  body.menu-open { overflow: hidden; }
}
@media (min-width: 1024px) {
  .subnav { display: block; }
}

/* =============================================================
   21. Reduced motion — only intrusive effects
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-scroll .mouse::after { animation: none; }
  .marquee-track { animation-duration: 90s; }
  .hero-bg img { transform: none; }
}