/* ==========================================================
   OSTARA · Clínica de Fertilidad — Landing demo
   Paleta, tipografía y jerarquías según Ostara_Brandbook.pdf
   ========================================================== */

:root {
  /* Principales (Bruma = color principal de la marca) */
  --bruma: #8a929d;
  --agua: #738d93;
  --cielo: #cddbe3;
  /* Solo fondos o bloques de texto */
  --marfil: #f4f1ee;
  --ebano: #243035;
  --arcilla: #b2876f;
  /* Complementarios */
  --rosa: #c6b5ac;
  --olivo: #c3c5c1;

  --font-title: "Tenor Sans", "Times New Roman", serif;
  --font-body: "Sen", system-ui, -apple-system, "Segoe UI", sans-serif;

  --gutter: 20px;
  --max: 1200px;
  --section-y: clamp(88px, 12vw, 168px);
  --radius: 2px;
  --ease: cubic-bezier(.22, .61, .36, 1);

  /* Logo horizontal del header: alto del logo y margen de protección = alto de la "A" (57% del alto) */
  --logo-h: 34px;
  --header-h: calc(var(--logo-h) * (1 + .57 * 2));
}

@media (min-width: 900px) {
  :root { --gutter: 40px; --logo-h: 42px; }
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--marfil);
  color: var(--ebano);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
ul, ol { list-style: none; margin: 0; padding: 0; }
p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }
figure { margin: 0; }

.container { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section-y); }

.skip { position: absolute; left: -9999px; top: 8px; background: var(--ebano); color: var(--marfil); padding: 8px 14px; z-index: 100; }
.skip:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--agua); outline-offset: 3px; }

/* ---------- Tipografía (jerarquía pág. 20: H1 32pt / H2 16pt Tenor Sans · H3 14pt / cuerpo 10pt Sen) ---------- */
h1, h2 { font-family: var(--font-title); font-weight: 400; margin: 0; }
h1 {
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: .01em;
  margin-bottom: .45em;
}
h2 {
  font-size: clamp(1.05rem, 1.7vw, 1.3rem);
  text-transform: uppercase;
  letter-spacing: .22em;
  line-height: 1.5;
  margin-bottom: 1.4em;
}
h3 {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1.15rem;
  line-height: 1.4;
  margin: 0 0 .5em;
}
.display {
  font-family: var(--font-title);
  font-size: clamp(1.6rem, 3.4vw, 2.5rem);
  line-height: 1.25;
  margin-bottom: .9em;
}
.lead { font-size: clamp(1.05rem, 1.6vw, 1.2rem); max-width: 40ch; }
.eyebrow {
  display: flex; align-items: center; gap: 14px;
  font-size: .75rem; font-weight: 600;
  letter-spacing: .18em; text-transform: uppercase;
  margin-bottom: 1.6em;
}
.eyebrow::before { content: ""; width: 32px; height: 1px; background: currentColor; opacity: .5; }

.section__head { max-width: 640px; margin-bottom: clamp(48px, 7vw, 88px); }
.section__head h2 { margin-bottom: .9em; }
.section__intro { font-size: 1.05rem; }

.ph { font-weight: 600; letter-spacing: .02em; }
.placeholder-tag {
  font-size: .7rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  border: 1px solid currentColor; padding: 4px 10px; border-radius: 40px; opacity: .8;
}

/* ---------- Botones y enlaces ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 50px; padding: 14px 28px;
  font-family: var(--font-body); font-size: .8rem; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase; text-decoration: none;
  border-radius: 40px; border: 1px solid transparent;
  transition: background-color .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease);
}
.btn--primary { background: var(--ebano); color: var(--marfil); }
.btn--primary:hover { background: var(--agua); }
.icon { width: 18px; height: 18px; flex: none; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: .78rem; font-weight: 600; letter-spacing: .16em; text-transform: uppercase;
  text-decoration: none; padding-block: 6px;
  border-bottom: 1px solid currentColor;
}
.link-arrow::after { content: "→"; transition: transform .35s var(--ease); }
.link-arrow:hover::after { transform: translateX(4px); }

/* ---------- Logo: margen de protección = alto de la "A" ---------- */
.logo-clear { display: block; padding: calc(var(--logo-h) * .57) 0; }
.logo-clear img { height: var(--logo-h); width: auto; }

/* ---------- 1. Header ---------- */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  background: rgba(244, 241, 238, .94);
  -webkit-backdrop-filter: saturate(1.2) blur(10px);
  backdrop-filter: saturate(1.2) blur(10px);
  transition: border-color .35s var(--ease);
  border-bottom: 1px solid transparent;
}
.header.is-scrolled { border-bottom-color: rgba(36, 48, 53, .1); }
.header__inner {
  max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter);
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-h);
}

.burger {
  width: 44px; height: 44px; display: grid; place-content: center; gap: 7px;
  background: none; border: 0; cursor: pointer; color: var(--ebano); padding: 0;
}
.burger span { display: block; width: 26px; height: 1.5px; background: currentColor; transition: transform .35s var(--ease); }
.burger[aria-expanded="true"] span:first-child { transform: translateY(4.25px) rotate(45deg); }
.burger[aria-expanded="true"] span:last-child { transform: translateY(-4.25px) rotate(-45deg); }

.nav {
  /* absolute: el backdrop-filter del header lo vuelve contenedor de sus hijos */
  position: absolute; top: 100%; left: 0; right: 0;
  height: calc(100vh - var(--header-h)); height: calc(100dvh - var(--header-h));
  background: var(--marfil);
  display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 48px;
  padding: 40px var(--gutter) 80px;
  opacity: 0; visibility: hidden;
  transition: opacity .4s var(--ease), visibility .4s;
}
.nav.is-open { opacity: 1; visibility: visible; }
.nav__list { display: flex; flex-direction: column; align-items: center; gap: 28px; }
.nav__list a {
  font-family: var(--font-title); font-size: 1.6rem; text-decoration: none;
  text-transform: uppercase; letter-spacing: .16em;
}

@media (min-width: 900px) {
  .burger { display: none; }
  .nav {
    position: static; height: auto; background: none; padding: 0;
    flex-direction: row; gap: 44px; opacity: 1; visibility: visible;
  }
  .nav__list { flex-direction: row; gap: 36px; }
  .nav__list a {
    font-family: var(--font-body); font-size: .78rem; font-weight: 600; letter-spacing: .18em;
    position: relative; padding-block: 6px;
  }
  .nav__list a::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
    background: currentColor; transform: scaleX(0); transform-origin: left;
    transition: transform .4s var(--ease);
  }
  .nav__list a:hover::after { transform: scaleX(1); }
  .nav__cta { min-height: 44px; padding: 10px 22px; }
}

/* ---------- 2. Hero ---------- */
.hero { padding-top: calc(var(--header-h) + clamp(32px, 5vw, 64px)); padding-bottom: var(--section-y); }
.hero__grid { display: grid; gap: 56px; align-items: center; }
.hero__iso { width: 64px; margin-bottom: 36px; }
.hero__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 20px 32px; margin-top: 40px; }
.hero__media img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: 55% 50%; border-radius: var(--radius); }

@media (min-width: 900px) {
  .hero__grid { grid-template-columns: 1.05fr 1fr; gap: 72px; }
  .hero__iso { width: 76px; }
  .hero__media img { aspect-ratio: auto; height: min(78vh, 680px); }
}

/* ---------- 3. Nosotros ---------- */
.about__grid { display: grid; gap: 64px; }
.about__media { position: relative; padding-bottom: 18%; }
.about__main { width: 82%; aspect-ratio: 3 / 4; object-fit: cover; border-radius: var(--radius); }
.about__accent {
  position: absolute; right: 0; bottom: 0; width: 46%; aspect-ratio: 4 / 3; object-fit: cover;
  border: 10px solid var(--marfil); border-radius: var(--radius);
}
.about__text p:not(.display):not(.eyebrow) { max-width: 52ch; }
@media (min-width: 900px) {
  .about__grid { grid-template-columns: 1fr 1fr; gap: 104px; align-items: center; }
}

/* ---------- Frase manifesto (Agua + texto Marfil, combinación pág. 17) ---------- */
.quote { background: var(--agua); color: var(--marfil); padding-block: clamp(80px, 11vw, 150px); }
.quote blockquote { margin: 0 auto; max-width: 900px; text-align: center; }
.quote p {
  font-family: var(--font-title); font-size: clamp(1.6rem, 3.6vw, 2.7rem); line-height: 1.35;
}

/* ---------- 4. Valores ---------- */
.values__grid { display: grid; gap: 56px 32px; grid-template-columns: 1fr; }
.value img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; margin-bottom: 28px; border-radius: var(--radius); }
.value h3 {
  font-family: var(--font-title); font-weight: 400; font-size: 1.05rem;
  text-transform: uppercase; letter-spacing: .2em;
}
.value p { font-size: .95rem; max-width: 32ch; }
@media (min-width: 600px) { .values__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) {
  .values__grid { grid-template-columns: repeat(4, 1fr); }
  .value:nth-child(even) { margin-top: 72px; }
}

/* ---------- 5. Tratamientos (Cielo de fondo, tarjetas Marfil) ---------- */
.treatments { background: var(--cielo); }
.cards { display: grid; gap: 20px; }
.card {
  background: var(--marfil); padding: 40px 32px 36px; border-radius: var(--radius);
  display: flex; flex-direction: column; align-items: flex-start;
  transition: transform .5s var(--ease);
}
.card:hover { transform: translateY(-4px); }
.card__num { font-family: var(--font-title); font-size: 1.5rem; color: var(--agua); margin-bottom: 40px; }
.card h3 { font-family: var(--font-title); font-weight: 400; font-size: 1.35rem; margin-bottom: .7em; }
.card p { font-size: .95rem; margin-bottom: 32px; flex: 1; }
@media (min-width: 700px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .cards { grid-template-columns: repeat(4, 1fr); } }

/* ---------- 6. Proceso ---------- */
.process__grid { display: grid; gap: 56px; }
.process__img { width: 100%; max-width: 440px; aspect-ratio: 4 / 3; object-fit: cover; margin-top: 16px; border-radius: var(--radius); }
.steps { counter-reset: step; }
.step {
  display: grid; grid-template-columns: 64px 1fr; gap: 20px;
  padding-block: 32px; border-top: 1px solid rgba(36, 48, 53, .18);
}
.step:last-child { border-bottom: 1px solid rgba(36, 48, 53, .18); }
.step__num { font-family: var(--font-title); font-size: 2.6rem; line-height: 1; color: var(--arcilla); }
.step p { max-width: 46ch; }
@media (min-width: 900px) {
  .process__grid { grid-template-columns: 1fr 1.2fr; gap: 104px; align-items: start; }
  .process__intro { position: sticky; top: calc(var(--header-h) + 40px); }
  .step { grid-template-columns: 96px 1fr; padding-block: 40px; }
}

/* ---------- 7. Todas las familias (Rosa suave + texto Ébano, combinación pág. 17) ---------- */
.families { background: var(--rosa); }
.families__grid { display: grid; gap: 56px; align-items: center; }
.families__text p:not(.display):not(.eyebrow) { max-width: 50ch; }
.families__media img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; border-radius: var(--radius); }
@media (min-width: 900px) {
  .families__grid { grid-template-columns: 1.1fr .9fr; gap: 104px; }
}

/* ---------- 8. Equipo ---------- */
.doctor { display: grid; gap: 40px; max-width: 1000px; }
.doctor__photo {
  aspect-ratio: 4 / 5; width: 100%; max-width: 420px;
  background: var(--cielo); color: var(--agua);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 24px;
  border-radius: var(--radius);
}
.doctor__photo .placeholder-tag { color: var(--ebano); }
img.doctor__photo { object-fit: cover; object-position: var(--focus, 50% 30%); }  /* encuadre por foto: style="--focus: x y" */
.doctor + .doctor { margin-top: clamp(72px, 10vw, 128px); }
.doctor__initials { font-family: var(--font-title); font-size: 4.5rem; letter-spacing: .1em; line-height: 1; }
.doctor__info h3 { font-family: var(--font-title); font-weight: 400; font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: .8em; }
.doctor__specs { margin-bottom: 28px; }
.doctor__specs li {
  font-size: .82rem; font-weight: 600; letter-spacing: .16em; text-transform: uppercase;
  padding-block: 14px; border-top: 1px solid rgba(36, 48, 53, .18);
}
.doctor__specs li:last-child { border-bottom: 1px solid rgba(36, 48, 53, .18); }
.doctor__meta { font-size: .9rem; }
.doctor__bio { max-width: 52ch; }
@media (min-width: 800px) {
  .doctor { grid-template-columns: 380px 1fr; gap: 80px; align-items: center; }
}

/* ---------- 9. FAQ ---------- */
.faq { padding-top: 0; }
.faq__grid { display: grid; gap: 8px; }
.accordion details { border-top: 1px solid rgba(36, 48, 53, .18); }
.accordion details:last-child { border-bottom: 1px solid rgba(36, 48, 53, .18); }
.accordion summary {
  list-style: none; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; gap: 24px;
  padding-block: 26px; font-size: 1.05rem; font-weight: 500;
}
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after {
  content: "+"; font-family: var(--font-title); font-size: 1.6rem; line-height: 1; color: var(--agua);
  transition: transform .4s var(--ease); flex: none;
}
.accordion details[open] summary::after { transform: rotate(45deg); }
.accordion details p { padding-bottom: 28px; max-width: 62ch; }
@media (min-width: 900px) {
  .faq__grid { grid-template-columns: .8fr 1.2fr; gap: 104px; }
}

/* ---------- 10. Contacto (Bruma + texto Ébano, combinación pág. 17) ---------- */
.contact { background: var(--bruma); }
.contact__grid { display: grid; gap: 56px; }
.contact__list { margin: 8px 0 44px; display: grid; gap: 22px; }
.contact__list dt { font-size: .72rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; margin-bottom: 2px; }
.contact__list dd { margin: 0; font-size: 1.1rem; }
.contact__list a { text-decoration: none; border-bottom: 1px solid rgba(36, 48, 53, .4); }
.contact__list a:hover { border-bottom-color: currentColor; }
.hours__row { display: block; }
.hours__day { font-weight: 600; margin-right: .35em; }
.contact__actions { display: flex; flex-wrap: wrap; gap: 14px; }
.btn--outline { border-color: var(--ebano); color: var(--ebano); }
.btn--outline:hover { background: var(--ebano); color: var(--marfil); }
.map { position: relative; min-height: 360px; background: var(--cielo); border-radius: var(--radius); overflow: hidden; }
.map iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
@media (min-width: 900px) {
  .contact__grid { grid-template-columns: 1fr 1fr; gap: 104px; align-items: stretch; }
}

/* ---------- 11. Footer (Ébano + logo Marfil) ---------- */
.footer { background: var(--ebano); color: var(--marfil); padding-block: clamp(72px, 9vw, 120px) 48px; }
.footer__inner { display: flex; flex-direction: column; align-items: center; text-align: center; }
/* Logo principal: la "A" mide 28% del alto → margen de protección */
.footer__logo { --h: clamp(96px, 12vw, 132px); display: block; padding: calc(var(--h) * .28); }
.footer__logo img { height: var(--h); width: auto; }
.footer__tagline { font-family: var(--font-title); font-size: 1rem; text-transform: uppercase; letter-spacing: .24em; margin: 8px 0 44px; }
.footer__links { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 36px; margin-bottom: 56px; }
.footer__links a { font-size: .78rem; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; text-decoration: none; opacity: .85; }
.footer__links a:hover { opacity: 1; }
.footer__contact { font-size: .9rem; margin: -24px 0 40px; }
.footer__contact a { text-decoration: none; border-bottom: 1px solid rgba(244, 241, 238, .4); }
.footer__contact a:hover { border-bottom-color: currentColor; }
.footer__legal { font-size: .78rem; opacity: .6; }
.footer__permit { font-size: .7rem; letter-spacing: .04em; opacity: .6; margin-top: 6px; }

/* ---------- WhatsApp flotante ---------- */
.wa-float {
  position: fixed; right: 20px; bottom: 20px; z-index: 40;
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--agua); color: var(--marfil);
  display: grid; place-items: center;
  box-shadow: 0 8px 24px rgba(36, 48, 53, .18);
  transition: background-color .35s var(--ease), transform .35s var(--ease);
}
.wa-float:hover { background: var(--ebano); transform: translateY(-2px); }
.wa-float svg { width: 26px; height: 26px; }

/* ---------- Animaciones de entrada ---------- */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.js .reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  * { transition-duration: .01ms !important; }
}

body.menu-open { overflow: hidden; }

/* ---------- Aviso de privacidad (aviso-de-privacidad.html) ---------- */
.legal { padding-top: calc(var(--header-h) + clamp(40px, 6vw, 88px)); padding-bottom: var(--section-y); }
.legal__inner { max-width: 780px; }
.legal h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
.legal__lead { font-size: 1.08rem; }
.legal__date { font-size: .9rem; margin-top: 1.4em; }
.legal section { margin-top: 56px; padding-top: 48px; border-top: 1px solid rgba(36, 48, 53, .18); }
.legal h2 { margin-bottom: 1.2em; }
.legal h3 { font-size: 1.05rem; margin-top: 1.8em; }
.legal section ul { list-style: disc; padding-left: 1.25em; margin: 0 0 1.1em; }
.legal section li { margin-bottom: .45em; }
.legal section li::marker { color: var(--agua); }
.legal section a { color: inherit; }
.legal__toc { margin-top: 48px; padding: 28px 32px; background: var(--cielo); border-radius: var(--radius); }
.legal__toc ol { list-style: decimal; padding-left: 1.3em; display: grid; gap: 6px; }
.legal__toc a { text-decoration: none; border-bottom: 1px solid rgba(36, 48, 53, .35); }
.legal__toc a:hover { border-bottom-color: currentColor; }
.legal__back { margin-top: 64px; }