/* ==========================================================================
   AVS | EYEWEAR — sitio institucional B2B
   Identidad: sobria, industrial, confiable. Base clara, tinta #1d1d1b
   (negro del logo), acento azul acero institucional.
   ========================================================================== */

:root {
  --ink: #1d1d1b;            /* negro del logo AVS */
  --ink-soft: #44443f;
  --paper: #ffffff;
  --paper-alt: #f4f4f1;
  --line: #e2e2dd;
  --accent: #1f4e79;         /* azul acero institucional */
  --accent-dark: #16395a;
  --accent-contrast: #ffffff;
  --dark-bg: #141413;        /* bloques oscuros (licencia, footer) */
  --dark-text: #f4f4f1;
  --dark-muted: #b9b9b2;
  --radius: 10px;
  --container: 1120px;
  --font: "Archivo", "Helvetica Neue", Arial, sans-serif;
}

/* ---------- Reset mínimo ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.container { width: min(var(--container), 100% - 2.5rem); margin-inline: auto; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: #fff; padding: .75rem 1.25rem; z-index: 100;
}
.skip-link:focus { left: 0; }

/* ---------- Tipografía ---------- */
h1, h2, h3 { line-height: 1.15; margin: 0 0 .6em; font-weight: 800; letter-spacing: -.01em; }
h1 { font-size: clamp(2rem, 5.5vw, 3.4rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); }
h3 { font-size: 1.15rem; font-weight: 600; }
p { margin: 0 0 1em; }
.lead { font-size: clamp(1.05rem, 2vw, 1.25rem); color: var(--ink-soft); max-width: 56ch; }

.kicker {
  display: inline-block;
  font-size: .8rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent); margin-bottom: .9rem;
}
.section { padding: clamp(3.5rem, 8vw, 6rem) 0; }
.section--alt { background: var(--paper-alt); }
.section-head { max-width: 62ch; margin-bottom: clamp(1.5rem, 4vw, 2.8rem); }

/* ---------- Botones ---------- */
.btn {
  display: inline-block;
  padding: .8rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}
.btn--primary { background: var(--accent); color: var(--accent-contrast); }
.btn--primary:hover { background: var(--accent-dark); }
.btn--ghost { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn--ghost:hover { background: var(--ink); color: #fff; }
.btn--light { background: #fff; color: var(--ink); }
.btn--light:hover { background: var(--paper-alt); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: .8rem 0;
}
.brand { display: inline-flex; align-items: center; }
.brand img { width: auto; height: 34px; }

.nav-toggle {
  display: none;
  background: none; border: 0; padding: .5rem; cursor: pointer;
}
.nav-toggle .bar {
  display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0;
  transition: transform .25s ease, opacity .25s ease;
}
.site-nav ul {
  display: flex; gap: 1.6rem; align-items: center;
  list-style: none; margin: 0; padding: 0;
}
.site-nav a {
  text-decoration: none; color: var(--ink); font-weight: 600; font-size: .92rem;
}
.site-nav a:hover { color: var(--accent); }
.site-nav .btn { padding: .55rem 1.2rem; color: var(--accent-contrast); }
.site-nav .btn:hover { color: var(--accent-contrast); }

@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute; top: 100%; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    display: none; padding: 1rem 1.25rem 1.5rem;
  }
  .site-nav.is-open { display: block; }
  .site-nav ul { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .nav-toggle[aria-expanded="true"] .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .bar:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(4rem, 10vw, 7.5rem) 0;
  background:
    linear-gradient(115deg, rgba(31, 78, 121, .06), transparent 45%),
    var(--paper);
  border-bottom: 1px solid var(--line);
}
.hero__grid {
  display: grid; gap: 2.5rem; align-items: center;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 1.8rem; }
.hero__visual {
  position: relative;
  display: grid;
  justify-items: center;
  padding: 1rem 0;
}
.hero-card {
  margin: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 45px rgba(29, 29, 27, .12);
  padding: 1.1rem 1.2rem .8rem;
  width: min(360px, 86%);
}
.hero-card img { width: 100%; height: auto; }
.hero-card figcaption {
  font-size: .72rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-soft); padding-top: .6rem; border-top: 1px solid var(--line); margin-top: .4rem;
}
.hero-card--back {
  position: absolute; top: 0; right: 0;
  transform: rotate(3deg) translate(6%, -34%);
  opacity: .96; z-index: 0;
}
.hero-card:not(.hero-card--back) {
  position: relative; z-index: 1;
  transform: rotate(-2deg) translate(-7%, 16%);
}
.hero__tags { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 2.2rem; padding: 0; list-style: none; }
.hero__tags li {
  font-size: .78rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  color: var(--ink-soft); background: var(--paper-alt); border: 1px solid var(--line);
  padding: .35rem .75rem; border-radius: 999px;
}
@media (max-width: 820px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__visual { margin-top: 1.5rem; }
  .hero-card { width: min(320px, 88%); }
}

/* ---------- Capacidades ---------- */
.cards {
  display: grid; gap: 1.1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.4rem 1.3rem;
}
.card h3 { margin-bottom: .4rem; }
.card p { margin: 0; color: var(--ink-soft); font-size: .95rem; }
.card__num {
  display: inline-block; font-size: .78rem; font-weight: 800; color: var(--accent);
  letter-spacing: .1em; margin-bottom: .7rem;
}

/* ---------- Ecosistema ---------- */
.eco-grid { display: grid; gap: 1.2rem; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.eco-card {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.8rem 1.6rem; background: #fff;
  display: flex; flex-direction: column; gap: .6rem;
}
.eco-card--feature { background: var(--ink); color: var(--dark-text); border-color: var(--ink); }
.eco-card--feature p { color: var(--dark-muted); }
.eco-card__logo { height: 44px; display: flex; align-items: center; margin-bottom: .6rem; }
.eco-card__logo img { max-height: 100%; width: auto; }
.eco-card__role {
  font-size: .78rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent);
}
.eco-card--feature .eco-card__role { color: #9ec3e6; }
.eco-card p { font-size: .95rem; margin: 0; color: var(--ink-soft); }
.eco-card .eco-card__link { margin-top: auto; padding-top: 1rem; font-weight: 600; font-size: .92rem; }
.eco-card--feature a { color: #9ec3e6; }
.eco-note { margin-top: 1.4rem; font-size: .9rem; color: var(--ink-soft); max-width: 70ch; }

/* ---------- Licencia (bloque oscuro) ---------- */
.license { background: var(--dark-bg); color: var(--dark-text); }
.license .kicker { color: #9ec3e6; }
.license .lead { color: var(--dark-muted); }
.license__grid {
  display: grid; gap: 2.5rem; align-items: center;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
}
.license__logos {
  display: flex; align-items: center; justify-content: center; gap: clamp(1.5rem, 5vw, 3rem);
  flex-wrap: wrap;
}
.license__logos .afa-lockup { width: min(340px, 60vw); height: auto; }
.license__logos .torneos-badge {
  width: 140px; height: auto; border-radius: 10px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, .35);
}
.license__note {
  margin-top: 1.6rem; font-size: .85rem; color: var(--dark-muted);
  border-left: 3px solid #9ec3e6; padding-left: 1rem; max-width: 58ch;
}
@media (max-width: 820px) {
  .license__grid { grid-template-columns: 1fr; }
}

/* ---------- Alianzas / funcionamiento ---------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.1rem; counter-reset: step; }
.step {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.3rem 1.3rem 1.3rem 4.2rem; position: relative; counter-increment: step;
}
.step::before {
  content: counter(step, decimal-leading-zero);
  position: absolute; left: 1.2rem; top: 1.25rem;
  font-weight: 800; color: var(--accent); font-size: 1.05rem; letter-spacing: .04em;
}
.step h3 { margin-bottom: .3rem; }
.step p { margin: 0; color: var(--ink-soft); font-size: .95rem; }

/* ---------- Ópticas ---------- */
.split {
  display: grid; gap: 2.5rem; align-items: center;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}
@media (max-width: 820px) { .split { grid-template-columns: 1fr; } }
.checklist { list-style: none; margin: 1.2rem 0 0; padding: 0; display: grid; gap: .7rem; }
.checklist li { position: relative; padding-left: 1.9rem; color: var(--ink-soft); }
.checklist li::before {
  content: ""; position: absolute; left: 0; top: .35em;
  width: 1.05rem; height: 1.05rem; border-radius: 50%;
  background: var(--accent);
  -webkit-mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path fill="black" d="M6.5 12.2 2.3 8l1.4-1.4 2.8 2.8 5.8-5.8L13.7 5z"/></svg>') center / contain no-repeat;
          mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path fill="black" d="M6.5 12.2 2.3 8l1.4-1.4 2.8 2.8 5.8-5.8L13.7 5z"/></svg>') center / contain no-repeat;
}

/* ---------- Contacto ---------- */
.contact { background: var(--paper-alt); }
.contact__grid {
  display: grid; gap: 2.5rem;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
}
@media (max-width: 820px) { .contact__grid { grid-template-columns: 1fr; } }
.contact-form { display: grid; gap: 1rem; }
.contact-form label { font-weight: 600; font-size: .9rem; display: grid; gap: .35rem; }
.contact-form input, .contact-form select, .contact-form textarea {
  font: inherit; padding: .7rem .9rem; border: 1px solid var(--line);
  border-radius: 8px; background: #fff; color: var(--ink); width: 100%;
}
.contact-form textarea { resize: vertical; min-height: 120px; }
.contact__direct { margin-top: 1.4rem; font-size: .95rem; }
.contact__direct a { font-weight: 600; }
.form-hint { font-size: .82rem; color: var(--ink-soft); margin: 0; }

/* ---------- Footer ---------- */
.site-footer { background: var(--dark-bg); color: var(--dark-muted); padding: 3rem 0 2rem; }
.site-footer a { color: var(--dark-text); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.footer-grid {
  display: grid; gap: 2rem; grid-template-columns: minmax(0, 1.2fr) repeat(2, minmax(0, .9fr));
  padding-bottom: 2rem; border-bottom: 1px solid #2c2c2a;
}
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer .brand img { height: 30px; }
.footer-col h3 {
  color: var(--dark-text); font-size: .85rem; letter-spacing: .12em; text-transform: uppercase;
  margin-bottom: .9rem;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .5rem; font-size: .92rem; }
.footer-tagline { margin-top: 1rem; font-size: .9rem; max-width: 36ch; }
.footer-legal {
  display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between;
  padding-top: 1.5rem; font-size: .82rem;
}

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }