* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ---------- HERO ---------- */

.hero-frame-container {
  height: 300vh; /* 100vh de frames + 100vh de la diapositiva creciendo + 100vh de pantalla */
  position: relative;
}

#hero-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100vh;
  display: block;
  z-index: 0;
}

.hero-frame-container::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.6));
  pointer-events: none;
}


.hero-logo {
  --p: 0; /* lo actualiza el JS, igual que en .slide-intro */
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: row;
  gap: 80px;
  justify-content: center;
  align-items: center;
  opacity: calc(1 - var(--p) * 3); /* desaparece en el primer tercio del círculo */
  pointer-events: none;
  z-index: 1;

  animation: 1.5s entry 1;
}

@keyframes entry{
  0%{
    opacity: 0;
    scale: 0.9;
  }
}


.hero-logo .invap {
  height: 80px;
}

.hero-logo h1 {
  font-size: 70px;
  font-family: arial;
  color: white;
}

.hero-logo .cet-logo {
  height: 130px;
}

/* ---------- GRANO ---------- */

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.3;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

/* ---------- DIAPOSITIVA 1 (crece con el scroll) ---------- */

.slide-intro {
  --p: 0; /* progreso: 0 = círculo chico e invisible, 1 = pantalla completa */
  --inner: calc(5vmax + var(--p) * 70vmax); /* radio de la parte sólida */
  --feather: 20vmax; /* ancho del difuminado */
  position: fixed;
  inset: 0;
  opacity: var(--p);
  background: #111;
  color: #fff;
  z-index: 2;
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 var(--inner), transparent calc(var(--inner) + var(--feather)));
  mask-image: radial-gradient(circle at 50% 50%, #000 var(--inner), transparent calc(var(--inner) + var(--feather)));
}

/* ---------- DIAPOSITIVAS NORMALES ---------- */

.slides {
  position: relative;
  z-index: 3;
}

.slide {
  height: 100vh;
  background: #111; /* opaco, para tapar la diapositiva fija */
  color: #fff;

  display: flex;
  justify-content: center;
  align-items: start;
  flex-direction: column;
}

.slide.dia1 .content{
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.slide.dia1{
  background: #111;
  position: relative;
  padding: 100px;
}

.slide.dia1 h3{
  font-family: "Inter", sans-serif;
  font-weight: 600;
  position: absolute;
  top: 150px;
  left: 100px;
}

.slide.dia1 p{
  font-family: "Montserrat", sans-serif;
  letter-spacing: 1px;
  font-weight: 500;
  font-size: 30px;
}

.slide.dia1 h1{
  font-family: "Inter", sans-serif;
  font-weight: 600;
  font-size: 50px;
}

.slide.dia1 h2{
  font-family: "Montserrat", sans-serif;
  font-weight: 500;
  font-size: 32px;
}

.users{
  position: absolute;
  left: 100px;
  bottom: 150px;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: 20px;
}

.slide.dia1 h4{
  font-family: "Inter", sans-serif;
  font-weight: 400;
  font-size: 35px;
}


.slide.dia2{
  background: #E9F3F7;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  border-bottom: 2px solid rgba(0, 0, 0, 0.1);
}

.slide.dia2 .title h1{
  font-family: "Inter", sans-serif;
  font-weight: 600;
  font-size: 50px;
  color: black;
}

.slide.dia2 .title h2{
  font-family: "Montserrat", sans-serif;
  font-weight: 500;
  font-size: 32px;
  color: black;
}

.slide.dia2 .title{
  position: absolute;
  top: 150px;
  left: 100px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.cards .card h1{
  color: #007731;
  font-family: "Inter", sans-serif;
  font-size: 30px;
}

.cards .card h2{
  color: black;
  font-family: "Montserrat", sans-serif;
  font-weight: 500;
  font-size: 25px;
}

.cards{
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 80px;
}

.cards .card{
  display: flex;
  gap: 20px;
  justify-content: center;
  align-items: start;
  flex-direction: column;
  padding: 30px;

  background-color: white;
  border-radius: 10px;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
  height: 400px;
  width: 400px;
}

.cards .card.especial{
  display: flex;
  gap: 20px;
  justify-content: center;
  align-items: start;
  flex-direction: column;
  padding: 30px;

  background-color: white;
  border-radius: 10px;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
  height: 100px;
  width: 1100px;
  position: absolute;
  bottom: 120px;
}

.cards .card.especial h1{
  color: #007731;
  font-family: "Inter", sans-serif;
  font-size: 25px;
  font-weight: 400;
}

.slide.dia3{
  background: #E9F3F7;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  border-bottom: 2px solid rgba(0, 0, 0, 0.1);
}

.slide.dia3 .title h1{
  font-family: "Inter", sans-serif;
  font-weight: 600;
  font-size: 50px;
  color: black;
}

.slide.dia3 .title h2{
  font-family: "Montserrat", sans-serif;
  font-weight: 500;
  font-size: 32px;
  color: black;
}

.slide.dia3 .title{
  position: absolute;
  top: 150px;
  left: 100px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}


.slide.dia4{
  background: #E9F3F7;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  border-bottom: 2px solid rgba(0, 0, 0, 0.1);
}


.slide.dia4 .title h1{
  font-family: "Inter", sans-serif;
  font-weight: 600;
  font-size: 50px;
  color: black;
}

.slide.dia4 .title h2{
  font-family: "Montserrat", sans-serif;
  font-weight: 500;
  font-size: 32px;
  color: black;
}

.slide.dia4 .title{
  position: absolute;
  top: 150px;
  left: 100px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.slide.dia4 .cards .card{
  display: flex;
  gap: 20px;
  justify-content: center;
  align-items: start;
  flex-direction: column;
  padding: 30px;

  background-color: white;
  border-radius: 10px;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
  height: 400px;
  width: 1200px;
}




.gracias-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #111;
}

.gracias-text {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
  font-size: 5rem;
  color: white;
  font-family: "Inter", sans-serif;
}

.gracias-text.visible {
  opacity: 1;
  transform: translateY(0);
}









@media (max-width: 1500px){
  .slide.dia1 .title h1,
  .slide.dia2 .title h1,
  .slide.dia3 .title h1,
  .slide.dia4 .title h1{
  font-size: 40px;
}
.slide.dia1 .title h2,
.slide.dia2 .title h2,
.slide.dia3 .title h2,
.slide.dia4 .title h2{
  font-size: 25px;
}

.slide.dia2 .title,
.slide.dia3 .title,
.slide.dia4 .title{
  top: 100px;
  left: 100px;
}
.cards .card h1{
  font-size: 22px;
}
.cards .card h2{
  font-size: 20px;
}
.cards .card{
  height: 300px;
  width: 350px;
}

.cards .card.especial{
  height: 80px;
  width: 1100px;
  bottom: 80px;
}

.cards .card.especial h1{
  font-size: 20px;
}


}

@media (max-width: 1280px) {

  .users .icons{
    display: none;
  }

  body {
    overflow-x: hidden;
  }

  /* --- Logo del hero --- */
  .hero-logo {
    gap: 24px;
  }

  .hero-logo .invap {
    height: 40px;
  }

  .hero-logo h1 {
    font-size: 32px;
  }

  .hero-logo .cet-logo {
    height: 65px;
  }

  /* --- Estructura general de las diapositivas --- */
  .slide {
    height: auto;
    min-height: 100vh;
    padding: 70px 24px;
  }

  /* --- Diapositiva 1 (portada) --- */
  .slide.dia1 {
    padding: 70px 24px;
  }

  .slide.dia1 h3 {
    position: static;
    font-size: 13px;
    margin-bottom: 20px;
  }

  .slide.dia1 .content {
    gap: 16px;
  }

  .slide.dia1 p {
    font-size: 18px;
  }

  .slide.dia1 h1 {
    font-size: 32px;
  }

  .slide.dia1 h4 {
    font-size: 19px;
  }

  .users {
    position: static;
    flex-wrap: wrap;
    margin-top: 10px;
    gap: 14px;
  }

  .slide.dia1 .users h2 {
    font-size: 20px;
  }

  .users .icons svg {
    width: 30px;
    height: 30px;
  }

  /* --- Diapositivas 2, 3 y 4 --- */
  .slide.dia2,
  .slide.dia3,
  .slide.dia4 {
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    gap: 30px;
    padding: 70px 20px;
  }

  .slide.dia2 .title,
  .slide.dia3 .title,
  .slide.dia4 .title {
    position: static;
    align-items: center;
    text-align: center;
  }

  .slide.dia2 .title h1,
  .slide.dia3 .title h1,
  .slide.dia4 .title h1 {
    font-size: 28px;
  }

  .slide.dia2 .title h2,
  .slide.dia3 .title h2,
  .slide.dia4 .title h2 {
    font-size: 17px;
  }

  .cards {
    flex-direction: column;
    gap: 20px;
    width: 100%;
  }

  .cards .card {
    width: 100%;
    height: auto;
    padding: 24px;
  }

  .cards .card h1 {
    font-size: 22px;
  }

  .cards .card h2 {
    font-size: 16px;
  }

  .cards .card.especial {
    width: 100%;
    height: auto;
    position: static;
  }

  .cards .card.especial h1 {
    font-size: 16px;
  }

  .slide.dia4 .cards .card {
    width: 100%;
    height: auto;
  }

  /* --- Gracias --- */
  .gracias-text {
    font-size: 2.5rem;
    text-align: center;
    padding: 0 20px;
  }
}

@media (max-width: 480px) {

  .hero-logo {
    gap: 16px;
  }

  .hero-logo .invap {
    height: 32px;
  }

  .hero-logo h1 {
    font-size: 24px;
  }

  .hero-logo .cet-logo {
    height: 50px;
  }

  .slide.dia1 h1 {
    font-size: 26px;
  }

  .slide.dia1 h4 {
    font-size: 16px;
  }

  .slide.dia2 .title h1,
  .slide.dia3 .title h1,
  .slide.dia4 .title h1 {
    font-size: 24px;
  }

  .gracias-text {
    font-size: 2rem;
  }
}