/* GranMeta — landing informativa
   Spine Fábrica + patrones de: Muscle Shop MX, HBH, Beyond Vitamins,
   Fresh Vitamins, AG1/Thorne (aire, trust, FAQ). Sin carrito ni precios. */

:root {
  --color-primary: #163a32;
  --color-primary-hover: #1f5246;
  --color-bg: #ffffff;
  --color-surface: #f3f6f4;
  --color-text: #111111;
  --color-muted: #5c6561;
  --color-border: #dce4df;
  --color-on-primary: #ffffff;
  --color-wa: #128c7e;
  --color-wa-hover: #0e7368;
  --color-danger: #8a2f2f;

  --font-base: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-heading: "Plus Jakarta Sans", var(--font-base);

  --fs-1: clamp(2.15rem, 4.4vw + 1rem, 3.6rem);
  --fs-2: clamp(1.55rem, 1.7vw + 1rem, 2.2rem);
  --fs-3: 1.125rem;
  --fs-4: 1rem;
  --fs-5: 0.9375rem;
  --fs-6: 0.75rem;

  --fw-regular: 400;
  --lh-base: 1.6;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2.5rem;
  --space-7: 4rem;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 3px rgba(17, 17, 17, 0.06);
  --shadow-md: 0 18px 40px -24px rgba(22, 58, 50, 0.28);
  --shadow-tinted: 0 14px 32px -16px rgba(22, 58, 50, 0.35);

  --container-max: 1120px;
  --header-h: 4.25rem;
  --section-y: clamp(3.5rem, 8vw, 6.5rem);
  --ease: cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 0.75rem);
}

section[id],
#inicio {
  scroll-margin-top: calc(var(--header-h) + 0.75rem);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-base);
  font-size: var(--fs-4);
  font-weight: var(--fw-regular);
  line-height: var(--lh-base);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img,
svg { display: block; max-width: 100%; }
img { height: auto; }

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.035em;
  margin: 0;
}

p { margin: 0; }

a {
  color: var(--color-primary);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}
a:hover { color: var(--color-primary-hover); }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}
.btn--primary:focus-visible,
.chip.is-active:focus-visible,
.btn--header:focus-visible {
  outline-color: #fff;
  box-shadow: 0 0 0 4px var(--color-primary);
}
.cta-band :focus-visible,
.topbar a:focus-visible,
.site-footer a:focus-visible,
.wa-fab:focus-visible {
  outline-color: #fff;
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: -120%;
  left: var(--space-4);
  z-index: 1000;
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
}
.skip-link:focus { top: var(--space-3); color: var(--color-on-primary); }

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

.eyebrow {
  margin: 0 0 var(--space-3);
  font-size: var(--fs-6);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 2.85rem;
  padding: 0.7em 1.35em;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: inherit;
  font-size: var(--fs-5);
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.btn--primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-tinted);
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  color: var(--color-on-primary);
}
.btn--ghost {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--ghost:hover {
  background: var(--color-primary);
  color: var(--color-on-primary);
}
.btn--header {
  background: var(--color-primary);
  color: var(--color-on-primary);
  min-height: 2.5rem;
  padding: 0.45em 1.1em;
  font-size: 0.8125rem;
}
.btn--header:hover { background: var(--color-primary-hover); color: var(--color-on-primary); }
.btn--on-dark {
  background: var(--color-on-primary);
  color: var(--color-primary);
}
.btn--on-dark:hover {
  background: #fff;
  color: var(--color-primary);
}

/* Barra corporativa — email + teléfono visibles */
.topbar {
  background: var(--color-primary);
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.topbar__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.35rem 1rem;
  padding-block: 0.5rem;
}
.topbar a {
  color: var(--color-on-primary);
  text-decoration: none;
}
.topbar a:hover { text-decoration: underline; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: #fff;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: var(--header-h);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-primary);
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 800;
  letter-spacing: -0.04em;
}
.brand:hover { color: var(--color-primary-hover); }
.brand__mark {
  display: grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 6px;
  background: var(--color-primary);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 800;
  flex-shrink: 0;
}
.brand__text { font-size: 1.2rem; }

.site-nav__list {
  display: flex;
  gap: var(--space-5);
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav a {
  color: var(--color-muted);
  text-decoration: none;
  font-size: var(--fs-5);
  font-weight: 500;
}
.site-nav a:hover,
.site-nav a.is-active { color: var(--color-text); }

.nav-actions { display: flex; align-items: center; gap: var(--space-3); }
.nav-wa { display: none; }
.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  min-width: 44px;
  min-height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}
.nav-toggle__bar {
  display: block;
  width: 1.2rem;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 1023px) {
  .btn--header { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-wa { display: list-item; margin-top: 0.5rem; }
  .site-nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    z-index: 51;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    padding: 0.75rem 1.25rem 1.25rem;
    display: none;
  }
  .site-nav.is-open { display: block; }
  .site-nav__list {
    flex-direction: column;
    gap: 0;
  }
  .site-nav a {
    display: block;
    padding: 0.75rem 0;
    min-height: 44px;
    font-size: 1.05rem;
    color: var(--color-text);
  }
}

/* Hero */
.hero {
  padding-block: clamp(2rem, 4vw, 3rem) var(--section-y);
}
.hero__grid {
  display: grid;
  gap: var(--space-6);
  align-items: center;
}
.hero h1 {
  font-size: clamp(1.85rem, 3.2vw + 1rem, 3.1rem);
  max-width: 12rem;
  line-height: 1.08;
}
.hero__lead {
  margin-top: var(--space-4);
  max-width: 42ch;
  color: var(--color-muted);
  font-size: 1.0625rem;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-5);
}
.hero__pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
  margin: var(--space-5) 0 0;
  padding: 0;
}
.hero__pills li {
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: var(--fs-6);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-surface);
}
.hero__media {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: var(--color-surface);
}
.hero__media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  object-position: 38% 62%;
}
.hero__media figcaption,
.ops__shot figcaption {
  padding: 0.65rem 1rem 0.85rem;
  font-size: 0.8125rem;
  letter-spacing: 0;
  text-transform: none;
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
  background: #fff;
}

@media (min-width: 900px) {
  .hero__grid {
    grid-template-columns: 0.95fr 1.05fr;
    gap: var(--space-7);
  }
}

/* Trust strip — Muscle Shop / Biomédica, sin cifras inventadas */
.trust {
  border-block: 1px solid var(--color-border);
  background: var(--color-bg);
  padding-block: clamp(2.25rem, 4vw, 3.25rem);
}
.trust__grid {
  display: grid;
  gap: var(--space-5);
}
.trust__item h3 {
  font-size: 1.05rem;
  margin: var(--space-3) 0 var(--space-2);
}
.trust__item p {
  color: var(--color-muted);
  font-size: var(--fs-5);
}
.trust__icon {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  color: var(--color-primary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}
.trust__icon svg { width: 1.25rem; height: 1.25rem; }

@media (min-width: 640px) {
  .trust__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .trust__grid { grid-template-columns: repeat(4, 1fr); gap: var(--space-5); }
}

/* Sections */
.section { padding-block: var(--section-y); }
.section--surface { background: var(--color-surface); }
.section__head { max-width: 40rem; margin-bottom: 2rem; }
.section__head h2 { font-size: var(--fs-2); }
.section__lead {
  margin-top: var(--space-3);
  color: var(--color-muted);
}

/* Cómo */
.steps {
  display: grid;
  gap: var(--space-5);
  list-style: none;
  margin: 0;
  padding: 0;
}
.step {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}
.step__num {
  display: block;
  font-size: var(--fs-6);
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.step h3 { font-size: 1.15rem; margin-bottom: var(--space-2); }
.step p { color: var(--color-muted); }

@media (min-width: 768px) {
  .steps { grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
}

/* Catálogo */
.catalog {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15.5rem, 1fr));
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.catalog > li { display: flex; }
.product {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.product:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-tinted);
}
.product__media {
  position: relative;
  background: var(--color-surface);
  aspect-ratio: 1;
  overflow: hidden;
}
.product__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.product__tag {
  position: absolute;
  top: 0.65rem;
  left: 0.65rem;
  padding: 0.25rem 0.6rem;
  background: #fff;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  color: var(--color-primary);
  border-radius: var(--radius-pill);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.product__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 0.35rem;
  padding: 1rem 1rem 1.15rem;
}
.product__meta {
  font-size: var(--fs-6);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  min-height: 2.4em;
}
.product h3 {
  font-size: 1.1rem;
  margin-bottom: var(--space-2);
}
.product__body > p {
  color: var(--color-muted);
  font-size: var(--fs-5);
  flex: 1;
  margin: 0;
}
.product__cta {
  align-self: flex-start;
  margin-top: auto;
  padding: 0.25rem 0;
  font-size: var(--fs-5);
  font-weight: 600;
  text-decoration: none;
  color: var(--color-primary);
  border-bottom: 1px solid currentColor;
}
.product__cta:hover { color: var(--color-primary-hover); }

/* Nosotros */
.nosotros {
  display: grid;
  gap: var(--space-6);
  align-items: center;
}
.nosotros__media {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.nosotros__media img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  object-position: 88% 42%;
}
.nosotros__copy h2 { margin-bottom: var(--space-4); }
.nosotros__copy > p { color: var(--color-muted); }
.facts {
  margin: var(--space-5) 0 0;
  padding: 0;
  list-style: none;
}
.facts li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: var(--space-3);
}
.facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--color-primary);
}

@media (min-width: 860px) {
  .nosotros {
    grid-template-columns: 0.95fr 1.05fr;
    gap: var(--space-7);
  }
}

/* Operación — bodega + estaciones (endpoints visibles) */
.ops {
  display: grid;
  gap: var(--space-4);
}
.ops__shot {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}
.ops__shot img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.ops__shot--bodega img { object-position: 70% 48%; }
.ops__shot--estacion img { object-position: 22% 78%; }

@media (min-width: 760px) {
  .ops { grid-template-columns: 1fr 1fr; }
}

/* FAQ — Muscle Shop / Sonnet / HBH */
.faq { max-width: 46rem; }
.faq__list { display: grid; gap: var(--space-3); }
.faq__list details {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.2rem 1.1rem;
}
.faq__list summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
  font-weight: 600;
  font-family: var(--font-heading);
  padding: 0.95rem 0;
  list-style: none;
}
.faq__list summary::-webkit-details-marker { display: none; }
.faq__list summary::after {
  content: "+";
  color: var(--color-primary);
  font-weight: 700;
  flex-shrink: 0;
}
.faq__list details[open] summary::after { content: "–"; }
.faq__list details p {
  padding-bottom: 1rem;
  color: var(--color-muted);
}

/* Contacto */
.contact {
  display: grid;
  gap: var(--space-7);
}
.contact__info h2 { margin-bottom: var(--space-3); }
.contact__info > p { color: var(--color-muted); }
.contact__list { margin: var(--space-5) 0 0; }
.contact__list > div { margin-bottom: var(--space-4); }
.contact__list dt {
  font-size: var(--fs-6);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 0.2rem;
}
.contact__list dd { margin: 0; font-weight: 600; }

.form {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.field { display: grid; gap: 0.4rem; }
.field label { font-size: var(--fs-5); font-weight: 600; }
.field input,
.field textarea {
  width: 100%;
  font: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.9rem;
  min-height: 2.85rem;
}
.field textarea { min-height: 8rem; resize: vertical; }
.field input:focus-visible,
.field textarea:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 22%, transparent);
}
.field input.invalid,
.field textarea.invalid { border-color: var(--color-danger); }
.check {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  font-size: var(--fs-5);
}
.check input { margin-top: 0.2rem; }
.form .btn { justify-self: start; }
.form__hint {
  font-size: var(--fs-6);
  color: var(--color-muted);
}
.form__status {
  min-height: 1.25em;
  font-size: var(--fs-5);
  font-weight: 600;
  color: var(--color-primary);
}
.form__status.is-error { color: var(--color-danger); }

@media (min-width: 860px) {
  .contact {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
  }
}

/* Banda CTA — AG1 / Apzel M3 */
.legal { max-width: 42rem; }
.legal h2 { font-size: 1.25rem; margin-bottom: var(--space-4); }
.legal p { color: var(--color-muted); margin-bottom: var(--space-3); }
.legal-block { padding-block: 2.5rem; }

.cta-band {
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding-block: var(--section-y);
}
.cta-band__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}
.cta-band h2 { font-size: var(--fs-2); margin-bottom: var(--space-2); }
.cta-band p { color: color-mix(in srgb, var(--color-on-primary) 78%, transparent); }

/* Footer inverse, 3 columnas — HBH / Muscle Shop */
.site-footer {
  background: var(--color-primary);
  color: color-mix(in srgb, var(--color-on-primary) 86%, transparent);
  padding-block: 3.5rem 2.5rem;
  border-top: 1px solid color-mix(in srgb, #fff 18%, transparent);
}
.site-footer a { color: var(--color-on-primary); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.site-footer__grid {
  display: grid;
  gap: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid color-mix(in srgb, var(--color-on-primary) 14%, transparent);
}
.site-footer__brand {
  color: var(--color-on-primary);
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: var(--space-3);
}
.site-footer__label {
  color: var(--color-on-primary);
  font-size: var(--fs-6);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}
.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}
.site-footer__legal {
  padding-top: var(--space-5);
  display: grid;
  gap: 0.65rem;
  max-width: 42rem;
  font-size: 0.8125rem;
  line-height: 1.55;
}

@media (min-width: 760px) {
  .site-footer__grid { grid-template-columns: 1.3fr 0.7fr 0.8fr 1fr; }
}

/* WhatsApp FAB */
.wa-fab {
  position: fixed;
  right: 1rem;
  bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
  z-index: 60;
  width: 3.5rem;
  height: 3.5rem;
  display: grid;
  place-items: center;
  background: var(--color-wa);
  color: #fff;
  border-radius: 50%;
  box-shadow: 0 10px 24px rgba(18, 140, 126, 0.4);
  text-decoration: none;
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}
.wa-fab:hover {
  background: var(--color-wa-hover);
  color: #fff;
  transform: translateY(-2px);
}

@media (max-width: 859px) {
  #contacto .form,
  .site-footer { padding-bottom: 5.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
  .product:hover { transform: none; }
}