/* Hialsa v5 — editorial premium.
   Paleta de marca en gradientes y bloques; tipografía del sistema (igual que v4).
   Colores/contrastes según docs/paleta.md; decisiones en docs/v5/implementacion.md */

:root {
  --color-primary: #0c4b86;
  --color-secondary: #0e79b6;
  --color-navy: #22274c;
  --color-accent: #0e79b6;
  --color-tint: #a1b8cc;

  --color-bg: #ffffff;
  --color-bg-soft: #eaf6fa;
  --color-text: #161211;
  --color-text-muted: #6e6c6d;
  --color-border: #d7e3ec;

  --color-whatsapp: #25d366;
  --color-whatsapp-text: #161211;

  --gradient-brand: linear-gradient(135deg, #0c4b86, #0e79b6);
  --gradient-deep: linear-gradient(145deg, #22274c, #0c4b86 60%, #0e79b6);

  --hairline: rgba(34, 39, 76, 0.14);

  --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-display: var(--font-body);

  --container: 1160px;
  --radius: 14px;
  --shadow: 0 18px 44px rgba(12, 75, 134, 0.14);
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  font-size: 1rem;
}
img, svg, iframe { display: block; max-width: 100%; }
img { height: auto; }
a { color: var(--color-primary); }
a:hover { color: var(--color-secondary); }
ul, ol { list-style: none; padding: 0; }
button, input, textarea { font: inherit; color: inherit; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2.2rem, 6vw, 3.4rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
h3 { font-size: 1.25rem; }

.display {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.04;
}
.sub-display { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.5rem, 3vw, 2rem); }

.eyebrow {
  text-transform: uppercase; letter-spacing: 0.28em; font-size: 0.72rem;
  font-weight: 600; color: var(--color-primary);
}
.lead { color: var(--color-text-muted); font-size: 1.06rem; max-width: 68ch; }
.section-sub { color: var(--color-text-muted); margin-top: 0.6rem; max-width: 62ch; }

.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;
}
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 300;
  background: var(--color-primary); color: #fff; padding: 0.6rem 1rem;
}
.skip-link:focus { left: 0; }
:focus-visible { outline: 3px solid var(--color-secondary); outline-offset: 2px; }

.container { width: min(100% - 2.4rem, var(--container)); margin-inline: auto; }

/* ---------- botones ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.55rem;
  padding: 0.8rem 1.5rem; border-radius: 999px; border: 1.5px solid transparent;
  font-weight: 600; font-size: 0.95rem; text-decoration: none; cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-wa { background: var(--color-whatsapp); color: var(--color-whatsapp-text); }
.btn-wa:hover { background: #1eb955; color: var(--color-whatsapp-text); }
.btn-white { background: #fff; color: var(--color-primary); }
.btn-white:hover { background: var(--color-bg-soft); color: var(--color-primary); }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-secondary); color: #fff; }
.btn-outline { background: transparent; color: var(--color-primary); border-color: var(--color-border); }
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-line { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.6); }
.btn-line:hover { border-color: #fff; color: #fff; }
.btn-block { width: 100%; justify-content: center; }
.btn-lg { padding: 1rem 1.9rem; font-size: 1.02rem; }
.btn-sm { padding: 0.5rem 1.05rem; font-size: 0.85rem; }

/* ---------- topbar + header ---------- */
.topbar { background: var(--color-navy); color: #eaf6fa; font-size: 0.8rem; }
.topbar-inner {
  min-height: 40px; display: none; align-items: center; justify-content: space-between; gap: 1rem;
}
.topbar-note { letter-spacing: 0.04em; opacity: 0.85; }
.topbar-links { display: flex; gap: 1.4rem; }
.topbar a { color: #eaf6fa; text-decoration: none; }
.topbar a:hover { color: #fff; text-decoration: underline; }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--hairline);
  transition: box-shadow 0.25s ease, background 0.25s ease;
}
.site-header.is-scrolled { background: rgba(255, 255, 255, 0.98); box-shadow: 0 10px 30px rgba(12, 75, 134, 0.08); }
.header-inner { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand img { height: 46px; width: auto; border-radius: 6px; }
.nav-toggle { background: none; border: 0; padding: 0.4rem; cursor: pointer; color: var(--color-primary); }
.site-nav { display: none; }
.site-nav.is-open {
  display: block; position: absolute; left: 0; right: 0; top: 100%;
  background: var(--color-bg); border-bottom: 1px solid var(--hairline);
  padding: 1.1rem 1.4rem 1.5rem; box-shadow: var(--shadow);
}
.site-nav > ul { display: flex; flex-direction: column; gap: 0.5rem; }
.site-nav a {
  color: var(--color-text); text-decoration: none; font-weight: 500;
  font-family: var(--font-display); font-size: 1.15rem;
}
.site-nav a:hover { color: var(--color-primary); }

.has-sub { position: relative; }
.sub-toggle {
  background: none; border: 0; cursor: pointer; padding: 0.35rem 0; color: var(--color-text);
  font-family: var(--font-display); font-size: 1.15rem; font-weight: 500;
  display: inline-flex; align-items: center; gap: 0.4rem;
}
.sub-toggle::after { content: '▾'; font-size: 0.7em; color: var(--color-secondary); }
.sub-menu { display: none; background: var(--color-bg); border: 1px solid var(--hairline); border-radius: 12px; box-shadow: var(--shadow); padding: 0.5rem; min-width: 260px; }
.sub-menu a { display: block; padding: 0.55rem 0.75rem; border-radius: 8px; font-size: 1rem; }
.sub-menu a:hover { background: var(--color-bg-soft); }
.has-sub.is-open .sub-menu { display: block; }
.header-wa { display: none; }

/* ---------- hero ---------- */
.hero { position: relative; overflow: hidden; background: var(--gradient-brand); color: #fff; }
.hero::before {
  content: ''; position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(55% 75% at 92% 8%, rgba(161, 184, 204, 0.4), transparent 62%),
    radial-gradient(60% 80% at 0% 100%, rgba(34, 39, 76, 0.6), transparent 60%);
}
.hero-inner {
  position: relative; z-index: 1;
  padding: clamp(3.2rem, 9vw, 6.5rem) 0 clamp(2.6rem, 6vw, 4.5rem);
  max-width: 960px;
}
.hero .eyebrow { color: var(--color-tint); }
.hero-title { font-size: clamp(2.6rem, 8vw, 5rem); line-height: 0.98; margin: 1.1rem 0 1.4rem; color: #fff; }
.hero-title em { font-style: italic; font-weight: 400; color: var(--color-tint); }
.hero-lead { color: rgba(255, 255, 255, 0.92); font-size: clamp(1.05rem, 2.4vw, 1.25rem); max-width: 56ch; margin-bottom: 1.9rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; }

.hero-index { display: grid; grid-template-columns: 1fr; margin-top: clamp(2.6rem, 6vw, 4rem); border-top: 1px solid rgba(255, 255, 255, 0.28); }
.hero-index a {
  display: flex; gap: 0.9rem; align-items: baseline; padding: 0.95rem 0.2rem;
  color: #fff; text-decoration: none; border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  font-family: var(--font-display); font-size: 1.05rem;
  transition: padding-left 0.2s ease, color 0.2s ease;
}
.hero-index a:hover { padding-left: 0.6rem; color: #fff; }
.hero-index a span { color: var(--color-tint); font-variant-numeric: tabular-nums; font-size: 0.85rem; }

/* ---------- secciones ---------- */
.section { padding: clamp(3rem, 8vw, 5.5rem) 0; }
.section-soft { background: var(--color-bg-soft); }
.section-dark { background: var(--color-navy); color: #eaf6fa; }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-dark .eyebrow { color: var(--color-tint); }
.section-dark .section-sub, .section-dark .lead { color: rgba(234, 246, 250, 0.78); }
.section-head { max-width: 760px; margin-bottom: clamp(1.8rem, 4vw, 2.8rem); }
.section-head .display { margin: 0.7rem 0 0; }

.page-head {
  padding: clamp(2.4rem, 6vw, 4rem) 0 clamp(1.8rem, 4vw, 2.6rem);
  border-bottom: 1px solid var(--hairline);
}
.page-head .display { margin: 0.5rem 0 0.9rem; }
.page-head .lead { max-width: 60ch; }
.breadcrumbs { font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: 0.6rem; }
.breadcrumbs a { color: var(--color-text-muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--color-primary); text-decoration: underline; }
.breadcrumbs span[aria-hidden] { margin: 0 0.4rem; opacity: 0.6; }

/* ---------- lista de categorías (editorial) ---------- */
.cat-list { border-top: 1px solid var(--hairline); }
.cat-item {
  display: flex; align-items: center; gap: 1.1rem;
  padding: 1.3rem 0.3rem; border-bottom: 1px solid var(--hairline);
  color: var(--color-text); text-decoration: none;
  transition: background 0.25s ease, color 0.25s ease, padding 0.25s ease;
}
.cat-num { flex: none; width: 2rem; font-family: var(--font-display); color: var(--color-secondary); font-size: 0.95rem; }
.cat-main { flex: 1; display: grid; gap: 0.25rem; min-width: 0; }
.cat-name { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.3rem, 3vw, 1.9rem); line-height: 1.05; letter-spacing: -0.02em; }
.cat-desc { color: var(--color-text-muted); font-size: 0.94rem; max-width: 64ch; }
.cat-arrow { flex: none; color: var(--color-primary); transition: transform 0.25s ease, color 0.25s ease; }

.cat-item:hover, .cat-item:focus-visible {
  background: var(--color-navy); color: #eaf6fa;
  padding-left: 1.1rem; padding-right: 1.1rem;
}
.cat-item:hover .cat-name, .cat-item:focus-visible .cat-name { color: #fff; }
.cat-item:hover .cat-desc, .cat-item:focus-visible .cat-desc { color: rgba(234, 246, 250, 0.78); }
.cat-item:hover .cat-num, .cat-item:focus-visible .cat-num { color: var(--color-tint); }
.cat-item:hover .cat-arrow, .cat-item:focus-visible .cat-arrow { color: #eaf6fa; transform: translateX(6px); }

.cat-thumb {
  flex: none; width: 64px; aspect-ratio: 1 / 1; display: grid; place-items: center;
  border-radius: 10px; overflow: hidden; background: var(--gradient-brand);
}
.cat-thumb img { width: 100%; height: 100%; object-fit: cover; }
.ph { font-family: var(--font-display); font-weight: 600; color: rgba(255, 255, 255, 0.92); letter-spacing: 0.04em; font-size: 1.4rem; }

/* ---------- detalle de categoría ---------- */
.cat-detail { display: grid; gap: 2.6rem; align-items: start; }
.cat-detail-main .sub-display { margin-bottom: 1.3rem; }
.feature-list { border-top: 1px solid var(--hairline); }
.feature-list li { display: flex; gap: 1rem; padding: 1.05rem 0.2rem; border-bottom: 1px solid var(--hairline); font-size: 1.05rem; }
.feature-num { flex: none; font-family: var(--font-display); color: var(--color-secondary); }

.cat-panel {
  background: var(--color-bg-soft); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: clamp(1.2rem, 3vw, 1.8rem);
}
.cat-panel-media {
  aspect-ratio: 4 / 3; border-radius: 10px; overflow: hidden; margin-bottom: 1.4rem;
  display: grid; place-items: center; background: var(--gradient-brand);
}
.cat-panel-media img { width: 100%; height: 100%; object-fit: cover; }
.cat-panel-media .cat-thumb { width: 100%; height: 100%; aspect-ratio: auto; border-radius: 0; }
.cat-panel-media .ph { font-size: 2.4rem; }

.specs { width: 100%; border-collapse: collapse; margin-bottom: 1.4rem; }
.specs caption { text-align: left; color: var(--color-secondary); font-weight: 600; font-size: 0.76rem; letter-spacing: 0.18em; text-transform: uppercase; padding-bottom: 0.7rem; }
.specs th, .specs td { text-align: left; padding: 0.7rem 0.6rem; border-bottom: 1px solid var(--color-border); }
.specs th { color: var(--color-text-muted); font-weight: 500; width: 46%; }
.specs tr:last-child th, .specs tr:last-child td { border-bottom: 0; }

/* ---------- banda CTA ---------- */
.cta-band { position: relative; overflow: hidden; background: var(--gradient-deep); color: #fff; padding: clamp(3rem, 8vw, 5.5rem) 0; }
.cta-band::before { content: ''; position: absolute; inset: 0; background: radial-gradient(50% 90% at 85% 15%, rgba(161, 184, 204, 0.35), transparent 60%); }
.cta-band-inner { position: relative; z-index: 1; max-width: 720px; text-align: center; display: grid; justify-items: center; gap: 1rem; }
.cta-band .display { color: #fff; font-size: clamp(2rem, 5vw, 3.2rem); }
.cta-band p { color: rgba(255, 255, 255, 0.9); max-width: 52ch; }

/* ---------- valores (por qué elegirnos) ---------- */
.value-grid {
  display: grid; gap: 1px; background: rgba(234, 246, 250, 0.16);
  border: 1px solid rgba(234, 246, 250, 0.16);
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}
.value-card { background: var(--color-navy); padding: 2rem 1.6rem; }
.value-num { font-family: var(--font-display); color: var(--color-tint); font-size: 0.85rem; letter-spacing: 0.12em; }
.value-card h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.35rem; margin: 0.7rem 0 0.5rem; color: #fff; }
.value-card p { color: rgba(234, 246, 250, 0.78); font-size: 0.95rem; }
.value-grid.light { background: transparent; border: 0; gap: 1.3rem; }
.value-grid.light .value-card { background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius); }
.value-grid.light .value-num { color: var(--color-secondary); }
.value-grid.light .value-card h3 { color: var(--color-primary); }
.value-grid.light .value-card p { color: var(--color-text-muted); }

/* ---------- split / contacto ---------- */
.split { display: grid; gap: 2.4rem; }
.contact-layout { display: grid; gap: 2.4rem; }
.card-pad { background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius); padding: clamp(1.5rem, 4vw, 2.2rem); }
.contact-list { display: grid; gap: 1rem; margin-top: 1.3rem; }
.contact-list li { display: flex; gap: 0.7rem; align-items: flex-start; }
.contact-list svg { flex: none; margin-top: 0.3rem; color: var(--color-secondary); }
.contact-list a { color: var(--color-text); text-decoration: none; font-weight: 500; }
.contact-list a:hover { color: var(--color-primary); }
.mapa { margin-top: 1.6rem; }
.mapa iframe { width: 100%; height: 320px; border: 1px solid var(--color-border); border-radius: var(--radius); }

.form-grid { display: grid; gap: 1.05rem; }
.field label { display: block; font-weight: 600; margin-bottom: 0.35rem; }
.field input, .field textarea {
  width: 100%; padding: 0.8rem 0.95rem; border: 1px solid var(--color-border);
  border-radius: 10px; background: var(--color-bg); color: var(--color-text);
}
.field input:focus, .field textarea:focus { border-color: var(--color-secondary); }
.form-note { font-size: 0.85rem; color: var(--color-text-muted); }

/* ---------- footer ---------- */
.site-footer { background: var(--color-navy); color: #eaf6fa; margin-top: auto; }
.site-footer a { color: #eaf6fa; text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.footer-grid { display: grid; gap: 2.2rem; padding: clamp(2.8rem, 6vw, 4.2rem) 0 2.2rem; }
.footer-brand { font-family: var(--font-display); font-size: 1.6rem; font-weight: 700; margin-bottom: 0.6rem; }
.footer-desc { color: #b9c6d6; font-size: 0.95rem; margin-bottom: 1.1rem; max-width: 40ch; }
.footer-title { font-family: var(--font-body); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.16em; margin-bottom: 0.9rem; color: #fff; }
.footer-list { display: grid; gap: 0.55rem; font-size: 0.95rem; }
.footer-contact li { display: flex; gap: 0.6rem; align-items: flex-start; }
.footer-contact svg { flex: none; margin-top: 0.25rem; color: var(--color-tint); }
.socials { display: flex; gap: 0.6rem; margin-top: 1.1rem; }
.socials a {
  display: grid; place-items: center; width: 36px; height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.3); border-radius: 50%;
  font-size: 0.78rem; font-weight: 700; text-transform: uppercase;
}
.socials a:hover { background: var(--color-secondary); border-color: var(--color-secondary); text-decoration: none; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.15); padding: 1.1rem 0; font-size: 0.85rem; color: #b9c6d6; }

/* ---------- whatsapp flotante ---------- */
.float-wa {
  position: fixed; right: 1.1rem; bottom: 1.1rem; z-index: 140;
  width: 56px; height: 56px; display: grid; place-items: center;
  border-radius: 50%; background: var(--color-whatsapp); color: var(--color-whatsapp-text);
  box-shadow: 0 12px 30px rgba(12, 75, 134, 0.32);
  transition: transform 0.18s ease;
}
.float-wa:hover { transform: translateY(-3px) scale(1.03); color: var(--color-whatsapp-text); }

/* ---------- utilidades ---------- */
main { min-height: 60vh; }
.mt-2 { margin-top: 2rem; }
.text-center { text-align: center; }
body.no-scroll { overflow: hidden; }

/* ---------- escritorio ---------- */
@media (min-width: 900px) {
  .topbar-inner { display: flex; }
  .nav-toggle { display: none; }
  .site-nav { display: block; position: static; padding: 0; border: 0; box-shadow: none; background: none; }
  .site-nav > ul { flex-direction: row; align-items: center; gap: 1.7rem; }
  .site-nav a, .sub-toggle { font-size: 0.98rem; font-family: var(--font-body); }
  .header-wa { display: inline-flex; }
  .has-sub:hover .sub-menu, .has-sub:focus-within .sub-menu, .has-sub.is-open .sub-menu { display: block; }
  .sub-menu { position: absolute; top: 100%; left: 0; margin-top: 0.5rem; }

  .hero-index { grid-template-columns: repeat(4, 1fr); }
  .hero-index a { flex-direction: column; gap: 0.5rem; border-bottom: 0; border-right: 1px solid rgba(255, 255, 255, 0.14); padding: 1.2rem 1.2rem 1.2rem 0; }
  .hero-index a:last-child { border-right: 0; }
  .hero-index a:hover { padding-left: 0.6rem; }

  .cat-item { gap: 1.6rem; padding: 1.6rem 0.3rem; }
  .cat-thumb { width: 92px; }

  .cat-detail { grid-template-columns: 1.1fr 0.9fr; gap: 3.4rem; }
  .split { grid-template-columns: 1.05fr 0.95fr; gap: 3.4rem; }
  .contact-layout { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1.3fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .cat-item, .cat-arrow, .float-wa { transition: none; }
  .btn:hover, .float-wa:hover { transform: none; }
}