/* ============================================================
   HUELLA 4.0 — Landing page
   Sistema de diseño
   - Tipografía: Space Grotesk (headings) + Inter (body)
   - Color: verde biológico (primario) + índigo de marca (acento/CTA)
     + neutros cálidos. Base 4/8 spacing.
   ============================================================ */

:root {
  /* Color */
  --bg: #FAF9F3;
  --bg-alt: #EFF4E9;
  --bg-dark: #16241A;
  --text: #16241A;
  --text-muted: #4B5A4E;
  --text-inverse: #F6F8F3;
  --green-900: #1E4025;
  --green-700: #2F6B3C;
  --green-600: #3E8E4E;
  --green-500: #4CA85C;
  --green-100: #DCEBD9;
  --indigo-700: #362FA0;
  --indigo-600: #4338CA;
  --indigo-500: #514BDB;
  --indigo-100: #E4E2FB;
  --border: rgba(22, 36, 26, 0.12);
  --border-soft: rgba(22, 36, 26, 0.08);
  --shadow-sm: 0 1px 2px rgba(22, 36, 26, 0.06);
  --shadow-md: 0 8px 24px rgba(22, 36, 26, 0.10);
  --shadow-lg: 0 16px 40px rgba(22, 36, 26, 0.14);

  /* Type scale (base 16px, ratio ~1.25) */
  --fs-xs: 0.8125rem;
  --fs-sm: 0.9375rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.375rem;
  --fs-xl: 1.75rem;
  --fs-2xl: 2.25rem;
  --fs-3xl: 2.875rem;
  --fs-4xl: 3.5rem;

  /* Spacing (base 8) */
  --sp-1: 0.5rem;
  --sp-2: 0.75rem;
  --sp-3: 1rem;
  --sp-4: 1.5rem;
  --sp-5: 2rem;
  --sp-6: 3rem;
  --sp-7: 4rem;
  --sp-8: 6rem;
  --sp-9: 8rem;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: var(--fs-base);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 var(--sp-3);
  letter-spacing: -0.01em;
  color: var(--green-900);
}

p { margin: 0 0 var(--sp-3); max-width: 62ch; }
img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

:focus-visible {
  outline: 3px solid var(--indigo-500);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--sp-4);
}

.section {
  padding: var(--sp-8) 0;
}

.section--alt { background: var(--bg-alt); }
.section--dark {
  background: var(--green-900);
  color: var(--text-inverse);
}
.section--dark h2, .section--dark h3 { color: var(--text-inverse); }
.section--dark .eyebrow { color: var(--green-500); }
.section--dark p { color: rgba(246, 248, 243, 0.82); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green-700);
  margin-bottom: var(--sp-2);
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
}

.section-head {
  max-width: 640px;
  margin-bottom: var(--sp-6);
}

.section-head p { color: var(--text-muted); font-size: var(--fs-md); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 0.9rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: var(--fs-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease, color 180ms ease;
  min-height: 44px;
  white-space: nowrap;
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--indigo-600);
  color: #fff;
  box-shadow: var(--shadow-md);
}
.btn--primary:hover { background: var(--indigo-700); box-shadow: var(--shadow-lg); }

.btn--ghost {
  background: transparent;
  color: var(--text-inverse);
  border-color: rgba(246, 248, 243, 0.35);
}
.btn--ghost:hover { background: rgba(246, 248, 243, 0.1); border-color: rgba(246, 248, 243, 0.6); }

.btn--outline {
  background: #fff;
  color: var(--green-900);
  border-color: var(--border);
}
.btn--outline:hover { border-color: var(--green-700); background: var(--green-100); }

.btn--sm { padding: 0.65rem 1.1rem; font-size: var(--fs-xs); }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(250, 249, 243, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-soft);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: var(--fs-md);
  color: var(--green-900);
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
}

.brand small {
  display: block;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
}

@media (max-width: 480px) {
  .brand small { display: none; }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-5);
}

.nav-links a {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text);
  padding: var(--sp-1) 0;
  border-bottom: 2px solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}

.nav-links a:hover { color: var(--green-700); border-color: var(--green-500); }

.nav-cta { display: flex; align-items: center; gap: var(--sp-3); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  position: relative;
  transition: transform 200ms ease, opacity 200ms ease;
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after { position: absolute; top: 6px; }

.mobile-nav {
  position: fixed;
  top: 76px;
  left: 0;
  right: 0;
  z-index: 39;
  background: var(--bg);
  border-bottom: 1px solid var(--border-soft);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-4) var(--sp-5);
  max-height: calc(100vh - 76px);
  overflow-y: auto;
}

.mobile-nav[hidden] { display: none; }

.mobile-nav a {
  font-size: var(--fs-md);
  font-weight: 500;
  color: var(--text);
  padding: var(--sp-1) 0;
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: var(--sp-9) 0 var(--sp-8);
  background:
    radial-gradient(circle at 85% 10%, rgba(67, 56, 202, 0.10), transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(62, 142, 78, 0.16), transparent 55%),
    var(--bg);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--sp-7);
  align-items: center;
}

.hero-copy .eyebrow { color: var(--indigo-600); }

.hero h1 {
  font-size: var(--fs-4xl);
  max-width: 15ch;
}

.hero h1 em {
  font-style: normal;
  color: var(--green-700);
}

.hero-lede {
  font-size: var(--fs-md);
  color: var(--text-muted);
  max-width: 46ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-top: var(--sp-5);
}

.hero-actions .btn--primary { background: var(--green-700); }
.hero-actions .btn--primary:hover { background: var(--green-900); }

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-5);
  margin-top: var(--sp-6);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--border-soft);
}

.hero-meta-item { display: flex; align-items: flex-start; gap: var(--sp-2); }
.hero-meta-item svg { flex-shrink: 0; margin-top: 2px; color: var(--green-700); }
.hero-meta-item strong { display: block; font-size: var(--fs-sm); color: var(--green-900); }
.hero-meta-item span { font-size: var(--fs-xs); color: var(--text-muted); }

.hero-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  background: linear-gradient(155deg, var(--green-700), var(--green-900) 65%);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  isolation: isolate;
}

.hero-visual::before,
.hero-visual::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  opacity: 0.5;
}

.hero-visual::before {
  width: 60%;
  height: 60%;
  border: 1.5px solid rgba(246, 248, 243, 0.25);
  top: 8%;
  right: -6%;
}

.hero-visual::after {
  width: 30%;
  height: 30%;
  background: var(--indigo-500);
  filter: blur(40px);
  bottom: 8%;
  left: 6%;
  opacity: 0.55;
}

.hero-mark {
  position: relative;
  z-index: 1;
  width: 58%;
}

.hero-visual-caption {
  position: absolute;
  bottom: var(--sp-4);
  left: var(--sp-4);
  right: var(--sp-4);
  z-index: 2;
  background: rgba(22, 36, 26, 0.55);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(246, 248, 243, 0.18);
  border-radius: var(--radius-md);
  padding: var(--sp-3) var(--sp-4);
  color: var(--text-inverse);
  font-size: var(--fs-xs);
}

.hero-visual-caption strong { display: block; font-family: 'Space Grotesk', sans-serif; font-size: var(--fs-sm); margin-bottom: 2px; }

/* Value props */
.value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-4);
}

.value-card {
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: var(--sp-5);
  box-shadow: var(--shadow-sm);
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.value-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

.value-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--green-100);
  color: var(--green-700);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-3);
}

.value-card h3 { font-size: var(--fs-md); margin-bottom: var(--sp-1); }
.value-card p { font-size: var(--fs-sm); color: var(--text-muted); margin-bottom: 0; }

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
}

.service-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.service-card .tag {
  display: inline-flex;
  align-self: flex-start;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--indigo-600);
  background: var(--indigo-100);
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
}

.service-card h3 { font-size: var(--fs-lg); margin-top: var(--sp-2); }
.service-card p { color: var(--text-muted); font-size: var(--fs-sm); margin-bottom: 0; }

.service-card--wide {
  grid-column: span 3;
  flex-direction: row;
  align-items: center;
  gap: var(--sp-6);
  background: linear-gradient(120deg, var(--green-100), var(--bg-alt));
  border-color: var(--border-soft);
}

.service-card--wide .service-card-body { flex: 1; }
.service-card--wide .service-card-badge {
  flex-shrink: 0;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}
.service-card--wide .service-card-badge img { width: 62%; height: 62%; object-fit: contain; }

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-7);
  align-items: center;
}

.about-panel {
  background: var(--bg-alt);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  position: relative;
}

.about-panel blockquote {
  font-family: 'Space Grotesk', sans-serif;
  font-size: var(--fs-xl);
  color: var(--green-900);
  margin: 0 0 var(--sp-4);
  line-height: 1.3;
}

.about-panel cite {
  font-style: normal;
  font-size: var(--fs-sm);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.about-panel cite img { width: 32px; height: 32px; border-radius: 50%; }

.about-list {
  list-style: none;
  margin: var(--sp-5) 0 0;
  padding: 0;
  display: grid;
  gap: var(--sp-3);
}

.about-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-2);
  font-size: var(--fs-sm);
  color: var(--text);
}

.about-list svg { color: var(--green-700); flex-shrink: 0; margin-top: 3px; }

/* Content / social proof */
.content-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-3);
}

.content-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-soft);
  background: #fff;
}

.content-card-media {
  aspect-ratio: 4/5;
  background: linear-gradient(160deg, var(--green-700), var(--green-900));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-4);
  color: var(--text-inverse);
}

.content-card-media span {
  font-family: 'Space Grotesk', sans-serif;
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1.3;
  text-align: center;
}

.content-card-foot {
  padding: var(--sp-3) var(--sp-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.ig-follow {
  margin-top: var(--sp-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  flex-wrap: wrap;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--sp-4) var(--sp-5);
}

.ig-follow-left { display: flex; align-items: center; gap: var(--sp-3); }
.ig-follow-left img { width: 48px; height: 48px; border-radius: 50%; }
.ig-follow-left strong { display: block; font-size: var(--fs-md); }
.ig-follow-left span { font-size: var(--fs-xs); color: var(--text-muted); }

/* CTA / Contact */
.cta-panel {
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--indigo-700), var(--green-900) 120%);
  color: var(--text-inverse);
  padding: var(--sp-7);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--sp-6);
  align-items: center;
  box-shadow: var(--shadow-lg);
}

.cta-panel h2 { color: #fff; font-size: var(--fs-2xl); max-width: 16ch; }
.cta-panel p { color: rgba(246, 248, 243, 0.85); }

.cta-channels { display: grid; gap: var(--sp-3); }

.channel-card {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  background: rgba(246, 248, 243, 0.08);
  border: 1px solid rgba(246, 248, 243, 0.2);
  border-radius: var(--radius-sm);
  padding: var(--sp-3) var(--sp-4);
  transition: background-color 180ms ease, border-color 180ms ease;
}

.channel-card:hover { background: rgba(246, 248, 243, 0.16); border-color: rgba(246, 248, 243, 0.4); }

.channel-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(246, 248, 243, 0.14);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.channel-card strong { display: block; font-size: var(--fs-sm); }
.channel-card span { font-size: var(--fs-xs); color: rgba(246, 248, 243, 0.72); }

.channel-card.is-pending { opacity: 0.6; cursor: default; }
.channel-card.is-pending:hover { transform: none; background: rgba(246, 248, 243, 0.08); }

/* Footer */
.site-footer {
  background: var(--green-900);
  color: rgba(246, 248, 243, 0.75);
  padding: var(--sp-7) 0 var(--sp-5);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--sp-6);
  padding-bottom: var(--sp-6);
  border-bottom: 1px solid rgba(246, 248, 243, 0.14);
}

.footer-brand { display: flex; align-items: center; gap: var(--sp-2); margin-bottom: var(--sp-3); }
.footer-brand img { width: 36px; height: 36px; border-radius: 50%; }
.footer-brand strong { font-family: 'Space Grotesk', sans-serif; font-size: var(--fs-md); color: #fff; }

.site-footer p { color: rgba(246, 248, 243, 0.65); font-size: var(--fs-sm); }

.footer-col h3 {
  color: #fff;
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--sp-3);
}

.footer-col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--sp-2); }
.footer-col a { font-size: var(--fs-sm); transition: color 160ms ease; }
.footer-col a:hover { color: #fff; }

.footer-bottom {
  padding-top: var(--sp-4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-2);
  font-size: var(--fs-xs);
  color: rgba(246, 248, 243, 0.72);
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  background: var(--indigo-600);
  color: #fff;
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-sm);
  z-index: 100;
}
.skip-link:focus {
  left: var(--sp-3);
  top: var(--sp-3);
}

/* Responsive */
@media (max-width: 1024px) {
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .service-card--wide { grid-column: span 2; flex-direction: column; text-align: left; }
  .content-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-panel { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  :root { --sp-8: 4rem; --sp-9: 4.5rem; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { max-width: 420px; margin: 0 auto; }
  .hero h1 { font-size: var(--fs-3xl); max-width: none; }
  .nav-links, .nav-cta .btn--outline { display: none; }
  .nav-toggle { display: flex; }
  .nav-cta { gap: var(--sp-2); }
  .footer-grid { grid-template-columns: 1fr; gap: var(--sp-4); }
}

@media (max-width: 640px) {
  .value-grid, .services-grid, .content-grid { grid-template-columns: 1fr; }
  .service-card--wide { grid-column: span 1; }
  .hero h1 { font-size: var(--fs-2xl); }
  .cta-panel { padding: var(--sp-5); }
  .section { padding: var(--sp-6) 0; }
}