:root {
  --ink: #10201e;
  --muted: #536763;
  --paper: #f8faf7;
  --mist: #eef3e8;
  --water: #124A71;
  --water-dark: #173f46;
  --leaf: #5b7f3a;
  --sun: #f0ae4f;
  --white: #ffffff;
  --shadow: 0 18px 50px rgba(16, 32, 30, 0.14);
  --blue-water: #4AACD3;
  /* Botones secundarios, iconos, enlaces, detalles. */
  --navy-blue: #124A71;
  /* Color principal: menú, titulares, fondos fuertes, botón principal. */
  --red: #C23742;
  /* Detalle puntual: línea, borde, icono pequeño, aviso muy concreto. */
  --off-white: #E5E7E3;
  /* Fondos claros para evitar blanco demasiado frío. */
  --ice-blue: #91D6F8;
  /* Fondos suaves, tarjetas y separadores. */

}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}

img {
  display: block;
  max-width: 100%;
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(18px, 5vw, 64px);
  color: var(--white);
  transition: background 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  color: var(--ink);
  background: rgba(247, 251, 248, 0.94);
  box-shadow: 0 1px 24px rgba(16, 32, 30, 0.1);
  backdrop-filter: blur(16px);
}

.brand,
.site-nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
}

.ecos {
  color: var(--blue-water);
  text-shadow: 1px 0px 0px #FFF, 0px 1px 0px #FFF, -1px 0px 0px #FFF, 0px -1px 0px #FFF;
  /* text-shadow: 1px 0px 0px #124A71, 0px 1px 0px #124A71, -1px 0px 0px #124A71, 0px -1px 0px #124A71 */
}

.brand-mark {
  display: grid;
  position: relative;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 50%;
  font-size: 0.78rem;
  letter-spacing: 0;
}

.brand-logo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: opacity 180ms ease;
}

.brand-logo--scrolled {
  opacity: 0;
}

.site-header.is-scrolled .brand-logo--default,
.site-header.is-open .brand-logo--default {
  opacity: 0;
}

.site-header.is-scrolled .brand-logo--scrolled,
.site-header.is-open .brand-logo--scrolled {
  opacity: 1;
}

.site-nav {
  gap: clamp(16px, 3vw, 32px);
  font-weight: 700;
}

.site-nav a {
  opacity: 0.9;
  transition: color 180ms ease, opacity 180ms ease;
}

.site-nav a:hover {
  color: var(--red);
  opacity: 1;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid currentColor;
  border-radius: 50%;
  color: inherit;
  background: transparent;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: var(--white);
}

.hero-media,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-media {
  background-image: url("./media/hero_image.png");
  background-position: center;
  background-size: cover;
  transform: scale(1.02);
}

.hero-overlay {
  /* background:
    linear-gradient(90deg, rgba(4, 34, 38, 0.72), rgba(4, 34, 38, 0.36) 52%, rgba(4, 34, 38, 0.2)),
    linear-gradient(0deg, rgba(4, 34, 38, 0.72), transparent 45%); */
  background: linear-gradient(90deg, rgba(4, 34, 38, 0.5), rgba(4, 34, 38, 0.42) 52%, rgba(4, 34, 38, 0.28)), linear-gradient(0deg, rgba(0, 38, 43, 0.82), #0000 48%);
}

.hero-content {
  position: relative;
  width: min(760px, calc(100% - 36px));
  margin: 0 clamp(18px, 8vw, 110px) clamp(48px, 10vh, 88px);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--water);
  font-size: 1.06rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.eyebrow-white {
  margin: 0 0 12px;
  font-size: 1.06rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.06;
}

h1 {
  font-size: clamp(3.1rem, 10vw, 7.4rem);
}

h2 {
  font-size: clamp(1.8rem, 4.2vw, 3.35rem);
}

h3 {
  font-size: 1.22rem;
}

.hero-copy {
  width: min(650px, 100%);
  margin: 22px 0 0;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 12px 20px;
  font-weight: 800;
  cursor: pointer;
}

.button.primary {
  color: var(--white);
  background: var(--water);
}

.button.primary:hover {
  background: var(--water-dark);
}

.button.secondary {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.7);
  background: rgba(255, 255, 255, 0.1);
}

.section {
  padding: clamp(64px, 10vw, 128px) clamp(18px, 6vw, 80px);
}

.intro,
.split,
.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.85fr);
  gap: clamp(32px, 7vw, 90px);
  align-items: center;
}

.contact-only {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.85fr);
  gap: clamp(32px, 7vw, 90px);
  align-items: center;
}

.intro-text p,
.feature-copy p,
.contact-copy p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 1.06rem;
}

.intro-text {
  margin-top: 26px;
}

.intro-image {
  overflow: hidden;
}

.intro-image img {
  width: 100%;
  min-height: 420px;
  object-fit: cover;
}

.wave-divider {
  position: relative;
  z-index: 4;
  height: 0;
  padding: 0 clamp(18px, 6vw, 80px);
}

.audio-wave {
  position: absolute;
  top: 0;
  left: 50%;
  width: min(calc(100vw - 36px), 620px);
  height: clamp(54px, 10vw, 92px);
  padding: clamp(10px, 2vw, 16px) clamp(16px, 4vw, 28px);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(4px, 0.8vw, 8px);
  /* border: 1px solid rgba(36, 107, 115, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 18px 42px rgba(16, 32, 30, 0.16);
  backdrop-filter: blur(14px); */
  cursor: pointer;
  touch-action: none;
  transform: translate(-50%, -50%);
  user-select: none;
}

.audio-wave__bar {
  width: clamp(5px, 0.9vw, 10px);
  height: 20%;
  border-radius: 999px;
  background: #555;
  transform-origin: center;
  will-change: height, transform, opacity;
}

.programs {
  background: var(--off-white);
  padding-top: clamp(86px, 11vw, 142px);
}

.section-heading {
  max-width: 780px;
  margin-bottom: 58px;
}

.program-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(36px, 6vw, 72px);
  align-items: start;
  max-width: 1120px;
  margin-inline: auto;
  padding-block: 28px 56px;
}

.program-card {
  display: flex;
  align-items: center;
  gap: clamp(28px, 5vw, 70px);
}

.program-card img {
  flex: 0 1 48%;
  width: 48%;
  aspect-ratio: 1.55;
  object-fit: cover;
}

.program-card>div {
  flex: 1 1 0;
  width: auto;
}

/* Alternar */
.program-card:nth-child(even) {
  flex-direction: row-reverse;
}

.program-card:nth-child(4) {
  gap: clamp(16px, 3vw, 36px);
}

.reveal-card {
  opacity: 0;
  translate: -90px 0;
}

.reveal-card.is-visible {
  animation: cardSlideIn 760ms cubic-bezier(0.2, 0.75, 0.2, 1) forwards;
}

.reveal-card.is-visible:nth-child(1) {
  animation-delay: 120ms;
}

.reveal-card.is-visible:nth-child(2) {
  animation-delay: 300ms;
}

.reveal-card.is-visible:nth-child(3) {
  animation-delay: 480ms;
}

.reveal-card.is-visible:nth-child(4) {
  animation-delay: 660ms;
}

@keyframes cardSlideIn {
  from {
    opacity: 0;
    translate: 80px 0;
  }

  to {
    opacity: 1;
    translate: 0 0;
  }
}

.program-card:first-child img {
  padding: 6px 0;
  object-fit: contain;
}

.program-card:nth-child(4) img {
  /* aspect-ratio: 1216 / 1293; */
  padding: 6px 0;
  object-fit: contain;
}

.program-card div {
  padding: 24px;
}

.program-card p {
  margin: 12px 0 0;
  color: var(--muted);
}

.impact-band {
  display: grid;
  grid-template-columns: 0.8fr 1fr;
  gap: 30px;
  align-items: center;
  padding: clamp(54px, 8vw, 88px) clamp(18px, 6vw, 80px);
  color: var(--white);
  background: var(--navy-blue);
}

.impact-band .eyebrow {
  color: #a9e5dc;
}

.stats,
.participation-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.stats div,
.participation-steps div {
  border-left: 1px solid rgba(255, 255, 255, 0.28);
  padding-left: 20px;
}

.stats strong,
.stats span,
.participation-steps strong,
.participation-steps span {
  display: block;
}

.stats strong {
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1;
}

.participation-steps strong {
  font-size: clamp(1.08rem, 2vw, 1.32rem);
  line-height: 1.2;
}

.stats span,
.participation-steps span {
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.78);
}

.feature-image {
  position: relative;
  overflow: hidden;
}

.feature-image img {
  width: 100%;
  min-height: 430px;
  object-fit: cover;
}

.check-list {
  display: grid;
  gap: 14px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 34px;
  color: var(--muted);
}

.check-list li::before {
  position: absolute;
  left: 0;
  top: 0.2em;
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: var(--leaf);
  content: "+";
  font-size: 0.8rem;
  font-weight: 900;
}

.contact {
  position: relative;
  overflow: hidden;
  padding: clamp(64px, 10vw, 128px) clamp(18px, 6vw, 80px);
  background:
    linear-gradient(135deg, rgba(14, 38, 42, 0.68), rgba(36, 107, 115, 0.42)),
    url("./media/contacto_image.png") center / cover no-repeat;
  color: var(--white);
}

.contact-only {
  position: relative;
  overflow: hidden;
  padding: clamp(64px, 10vw, 128px) clamp(18px, 6vw, 80px);
  /* background:
    linear-gradient(135deg, rgba(14, 38, 42, 0.9), rgba(23, 63, 70, 0.82)),
    url("./media/contacto_image.png") center / cover no-repeat; */
}


.contact-copy {
  position: relative;
  max-width: 720px;
}

.contact-copy h2 {
  max-width: 760px;
}

.contact-copy p {
  max-width: 560px;
  margin-top: 22px;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(1.08rem, 2vw, 1.22rem);
}

.contact-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.contact-highlights span {
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  padding: 9px 13px;
  color: rgba(255, 255, 255, 0.86);
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.9rem;
  font-weight: 800;
}

.affiliate .contact-copy h2 {
  color: var(--ink);
}

.affiliate .contact-copy p {
  color: var(--muted);
}

.affiliate .contact-copy .eyebrow {
  color: var(--water);
}

.affiliate .contact-highlights span {
  border-color: rgba(36, 107, 115, 0.2);
  color: var(--water-dark);
  background: rgba(36, 107, 115, 0.08);
}

.signup-panel {
  position: relative;
  display: grid;
  align-content: start;
  justify-items: stretch;
  gap: 22px;
  overflow: hidden;
  padding: clamp(24px, 4vw, 34px);
  border-radius: 8px;

}

.affiliate .signup-panel {
  border: 1px solid rgba(36, 107, 115, 0.14);
  background: rgba(245, 250, 249, 0.88);
}



.signup-panel-head {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 12px;
}

.signup-badge {
  display: inline-flex;
  align-items: center;
  justify-self: start;
  min-height: 38px;
  border: 1px solid rgba(36, 107, 115, 0.22);
  border-radius: 999px;
  padding: 8px 16px;
  color: var(--water-dark);
  background: rgba(255, 255, 255, 0.72);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.signup-panel-head h3 {
  color: var(--ink);
  font-size: clamp(1.35rem, 2.4vw, 1.85rem);
}

.signup-panel-head p {
  margin: 0;
  color: var(--muted);
}

.signup-button {
  position: relative;
  z-index: 1;
  display: inline-flex;
  min-height: 66px;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 8px;
  padding: 18px 26px;
  color: var(--white);
  background: var(--navy-blue);
  font-size: clamp(1.08rem, 2vw, 1.25rem);
  font-weight: 950;
  text-transform: uppercase;
  transition: transform 180ms ease, box-shadow 180ms ease, filter 180ms ease;
}

.contact-actions {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.contact-action {
  display: inline-flex;
  min-height: 74px;
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
  border: 1px solid rgba(36, 107, 115, 0.16);
  border-radius: 8px;
  padding: 13px;
  color: var(--water-dark);
  background: rgba(255, 255, 255, 0.72);
  text-align: left;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.contact-action:hover {
  transform: translateY(-2px);
  border-color: rgba(36, 107, 115, 0.32);
  background: var(--white);
  box-shadow: 0 12px 24px rgba(16, 32, 30, 0.1);
}

.contact-action span:last-child {
  display: grid;
  gap: 2px;
}

.contact-action strong,
.contact-action small {
  display: block;
}

.contact-action strong {
  font-size: 0.96rem;
  line-height: 1.1;
}

.contact-action small {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 750;
}

.action-icon {
  display: grid;
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 8px;
  color: var(--white);
  background: var(--water);
  font-size: 0.76rem;
  font-weight: 950;
}

.contact-action.whatsapp {
  color: #155d36;
}

.contact-action.whatsapp .action-icon {
  background: #1f8a4c;
}

.contact-action.phone {
  color: #174f7a;
}

.contact-action.phone .action-icon {
  background: #1f6f9f;
}

.contact-action.email {
  color: #6b4a12;
}

.contact-action.email .action-icon {
  background: #c4872e;
}

.contact-action.facebook {
  color: #1d4f91;
}

.contact-action.facebook .action-icon {
  background: #2868b8;
}

.site-footer {
  padding: 42px clamp(18px, 6vw, 80px);
  color: rgba(255, 255, 255, 0.82);
  background: var(--navy-blue);
}

.site-footer-inner {
  display: grid;
  grid-template-columns: 1.15fr 1.05fr 1.15fr;
  gap: clamp(28px, 5vw, 76px);
  align-items: stretch;
  max-width: 1440px;
  margin-inline: auto;
}

.footer-block {
  display: grid;
  align-content: center;
  gap: 8px;
  min-width: 0;
}

.footer-block+.footer-block {
  border-left: 1px solid rgba(255, 255, 255, 0.16);
  padding-left: clamp(18px, 3vw, 34px);
}

.site-footer p {
  margin: 0;
}

.footer-block span {
  color: #a9e5dc;
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.site-footer .footer-title {
  color: var(--white);
  font-size: 1.08rem;
  font-weight: 850;
}

.footer-contact {
  justify-items: start;
}

.site-footer a {
  color: var(--white);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
  overflow-wrap: anywhere;
}

@media (max-width: 860px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    right: 18px;
    left: 18px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    border-radius: 8px;
    background: var(--white);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 12px;
  }

  .intro,
  .split,
  .contact,
  .contact-only,
  .impact-band {
    grid-template-columns: 1fr;
  }

  .program-grid,
  .stats,
  .participation-steps {
    grid-template-columns: 1fr;
  }

  .program-grid {
    padding-block: 0;
  }

  .program-card,
  .program-card:nth-child(even) {
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
  }

  .program-card img {
    flex-basis: auto;
    width: 100%;
  }

  .program-card:nth-child(4) {
    gap: 8px;
  }

  .stats div,
  .participation-steps div {
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.28);
    padding: 18px 0 0;
  }

  .feature-image {
    order: -1;
  }

  .affiliate {
    gap: 28px;
  }

  .site-footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-block+.footer-block {
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.16);
    padding: 18px 0 0;
  }
}

@media (max-width: 520px) {
  .site-header {
    padding: 14px 16px;
  }

  .hero {
    min-height: 88vh;
  }

  .hero-content {
    width: calc(100% - 32px);
    margin: 0 16px 38px;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .contact-actions {
    grid-template-columns: 1fr;
  }

  .contact-only {
    padding: 56px 16px;
  }

  .affiliate .contact-copy p {
    max-width: none;
    font-size: 1rem;
  }

  .affiliate .contact-highlights {
    gap: 8px;
  }

  .affiliate .contact-highlights span {
    flex: 1 1 100%;
    text-align: center;
  }

  .affiliate .signup-panel {
    padding: 22px 18px;
  }

  .signup-button {
    width: 100%;
  }

  .audio-wave {
    gap: 4px;
  }

  .audio-wave__bar {
    width: 5px;
  }

  .site-footer {
    padding: 30px 16px;
  }
}