/* ==========================================================================
   Wayfound — Costa Rica, as one plan
   Ground: a desaturated green-black so real footage reads cinematic.
   One accent (agua). One motion idea per section, never scattered.
   ========================================================================== */

:root {
  --noche: #07100f;
  --noche-2: #0b1817;
  --luz: #f4f7f6;
  --bruma: #e3ebe9;
  --agua: #27b4a6;
  --tinta: #0f2a2c;
  --sombra: #5e7375;
  --arena: #d8cfc0;

  --display: "Instrument Serif", "Times New Roman", Georgia, serif;
  --texto: "Schibsted Grotesk", "Helvetica Neue", Arial, sans-serif;

  --curva: cubic-bezier(0.16, 1, 0.3, 1);
  --margen: clamp(1.25rem, 5vw, 5.5rem);
  --grado: saturate(1.08) contrast(1.05);
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--noche);
  color: var(--luz);
  font-family: var(--texto);
  font-weight: 400;
  font-size: clamp(1.0625rem, 0.95rem + 0.42vw, 1.3125rem);
  line-height: 1.48;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3 {
  font-family: var(--display);
  font-weight: 400; /* Instrument Serif sólo tiene este peso, y le sobra */
  margin: 0;
  letter-spacing: -0.022em;
  line-height: 0.94;
  text-wrap: balance;
}

/* etiquetas y cifras: siempre en la de palo, nunca en la serif */
.etiqueta,
.sitio-lugar,
.dato-cifra,
.parada-n,
.pie span:first-child,
.boton {
  font-family: var(--texto);
  font-weight: 500;
}

p {
  margin: 0;
}

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

figure {
  margin: 0;
}

a {
  color: inherit;
}

::selection {
  background: var(--agua);
  color: var(--noche);
}

:focus-visible {
  outline: 2px solid var(--agua);
  outline-offset: 4px;
}

/* --- the two motion primitives ------------------------------------------ */

/* mask reveal, used once on load for the wordmark */
.corte {
  display: inline-block;
  overflow: hidden;
  vertical-align: bottom;
  padding-bottom: 0.06em;
}
.corte > span {
  display: inline-block;
}
/* escondido sólo si hay JavaScript para volver a sacarlo;
   sin él la marca se lee desde el primer momento */
.js .corte > span {
  transform: translateY(112%);
  transition: transform 1.25s var(--curva);
}
.cargado .corte > span {
  transform: translateY(0);
}
.cargado .marca .corte:nth-child(2) > span {
  transition-delay: 0.1s;
}
.cargado .entradilla > span {
  transition-delay: 0.42s;
}

/* one wipe for section headlines, same easing everywhere */
.js .revelar {
  clip-path: inset(0 100% 0 0);
  transition: clip-path 1.15s var(--curva);
}
.js .revelar.visible {
  clip-path: inset(0 0 0 0);
}

/* ============================== PORTADA ================================= */

.portada {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-rows: 1fr auto;
  overflow: hidden;
  padding: var(--margen);
  padding-top: clamp(2rem, 8vh, 6rem);
}

.portada-medio {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.lienzo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: var(--grado);
}

.portada .lienzo {
  transform: scale(1.05);
  animation: respiro 26s ease-in-out infinite alternate;
}

@keyframes respiro {
  from {
    transform: scale(1.05);
  }
  to {
    transform: scale(1.16);
  }
}

.portada-medio::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      to top,
      rgba(7, 16, 15, 0.78) 0%,
      rgba(7, 16, 15, 0.18) 42%,
      rgba(7, 16, 15, 0.52) 100%
    );
}

.portada-texto,
.portada-pie {
  position: relative;
  z-index: 1;
}

.portada-texto {
  align-self: end;
}

.marca {
  font-size: clamp(2.75rem, 27.5vw, 36rem);
  line-height: 0.86;
  letter-spacing: -0.022em;
  text-transform: lowercase;
}

/* una sola línea, de margen a margen */
.marca .corte {
  display: inline-block;
}

/* en pantallas muy estrechas la palabra partía en dos: la ajustamos */
@media (max-width: 24rem) {
  .marca {
    font-size: 26.2vw;
  }
}

.entradilla {
  margin-top: clamp(0.75rem, 2vw, 1.5rem);
  font-size: clamp(1.0625rem, 2.5vw, 1.875rem);
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--bruma);
}

.portada-pie {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-top: clamp(1.5rem, 4vh, 2.75rem);
  padding-top: 0.9rem;
  border-top: 1px solid rgba(216, 207, 192, 0.24);
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--bruma);
}

.sitio {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.5rem;
}
.sitio-lugar {
  letter-spacing: 0.005em;
}
.sitio-coord {
  color: var(--arena);
  opacity: 0.75;
  font-variant-numeric: tabular-nums;
}

.aviso {
  position: relative;
  padding-left: 2.5rem;
  color: var(--arena);
  opacity: 0.8;
  white-space: nowrap;
}
.aviso::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 1.75rem;
  height: 1px;
  background: currentColor;
}

/* =============================== TESIS ================================== */

.tesis {
  padding: clamp(3rem, 8vh, 6rem) var(--margen);
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.25rem);
  align-items: start;
}

.tesis h2 {
  font-size: clamp(1.875rem, 4.5vw, 4.25rem);
  line-height: 0.98;
  max-width: 40ch;
}

.tesis-cuerpo {
  display: grid;
  gap: 1.1rem;
  color: var(--bruma);
}

.tesis-cuerpo p {
  max-width: 62ch;
}

@media (min-width: 62rem) {
  .tesis-cuerpo {
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 5vw, 4.5rem);
    margin-left: auto;
    width: min(100%, 58rem);
  }
}

/* ========================= EL PAÍS, EN CUATRO =========================== */

.pais {
  position: relative;
}

.pais-fondo {
  position: sticky;
  top: 0;
  height: 100svh;
  overflow: hidden;
  z-index: 0;
}

.pais-fondo video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.4s ease;
  filter: var(--grado);
}

.pais-fondo video.activo {
  opacity: 1;
}

.pais-velo {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      to top,
      rgba(7, 16, 15, 0.9) 0%,
      rgba(7, 16, 15, 0.42) 48%,
      rgba(7, 16, 15, 0.78) 100%
    );
}

.pais-paneles {
  position: relative;
  z-index: 1;
  margin-top: -100svh;
  /* un respiro al final: sin él el vídeo se despega mientras el último
     panel sigue en pantalla y la escena se corta por la mitad.
     Va aquí y no en .pais porque el relleno de la sección no alarga
     el recorrido del vídeo pegado. */
  padding-bottom: 60svh;
}

.panel {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(3rem, 8vh, 5.5rem) var(--margen);
}

/* sombra bajo el texto: el metraje se ve, el texto se lee.
   Se apaga por los cuatro lados, así dos paneles seguidos no dejan
   una costura recta donde uno acaba y empieza el otro. */
.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 78% 58% at 20% 50%,
    rgba(7, 16, 15, 0.88) 0%,
    rgba(7, 16, 15, 0.62) 42%,
    rgba(7, 16, 15, 0) 100%
  );
}

.panel > * {
  position: relative;
  z-index: 1;
  max-width: 34rem;
}

.panel:nth-child(even) {
  align-items: flex-end;
  text-align: right;
}

.panel:nth-child(even)::before {
  background: radial-gradient(
    ellipse 78% 58% at 80% 50%,
    rgba(7, 16, 15, 0.88) 0%,
    rgba(7, 16, 15, 0.62) 42%,
    rgba(7, 16, 15, 0) 100%
  );
}

.panel:nth-child(even) .panel-dato {
  justify-content: flex-end;
}

.panel-dato {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.4rem 0;
  margin-bottom: clamp(0.75rem, 2vw, 1.25rem);
  font-size: 0.8125rem;
}

.dato-cifra {
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
  color: var(--agua);
}

.dato-sitio {
  position: relative;
  padding-left: 2.6rem;
  color: var(--bruma);
  opacity: 0.74;
}
.dato-sitio::before {
  content: "";
  position: absolute;
  left: 0.6rem;
  top: 0.62em;
  width: 1.4rem;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.panel h3 {
  font-size: clamp(2.5rem, 7.2vw, 6rem);
  line-height: 1;
  letter-spacing: -0.015em;
}

.panel-texto {
  margin-top: clamp(0.75rem, 1.6vw, 1.25rem);
  max-width: 40ch;
  color: var(--bruma);
}

/* ============================= LAS RAMAS ================================ */

.ramas {
  position: relative;
  z-index: 1;
  background: var(--noche);
  padding: clamp(3rem, 8vh, 6rem) 0;
}

.ramas-titulo {
  margin: 0 var(--margen) clamp(1.25rem, 3.5vh, 2.5rem);
  font-size: clamp(2.25rem, 6vw, 5.25rem);
  line-height: 0.96;
  max-width: 24ch;
}

.rama {
  display: grid;
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: center;
  padding: clamp(1rem, 2.6vh, 2.25rem) var(--margen);
}

/* todas las láminas con el mismo retrato: la sección mantiene su compás */
.rama-foto {
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--noche-2);
}

.rama-foto img,
.rama-foto video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* deriva suave al pasar: la mueve tu scroll, no un temporizador */
.con-deriva {
  will-change: transform;
}

/* nombre de la especie, en cursiva como se escribe en biología */
.rama-animal {
  font-family: var(--display);
  font-style: italic;
  font-size: clamp(1.1875rem, 1.8vw, 1.5rem);
  line-height: 1.2;
  color: var(--arena);
  margin-bottom: 0.4rem;
}

.rama-dicho h3 {
  font-size: clamp(2.5rem, 6.4vw, 5.5rem);
  line-height: 0.92;
  margin-bottom: clamp(0.5rem, 1.4vw, 0.9rem);
}

.rama-dicho p:not(.rama-animal) {
  max-width: 42ch;
  font-size: clamp(1.0625rem, 1rem + 0.3vw, 1.25rem);
  line-height: 1.5;
  color: var(--bruma);
}

.rama-extra {
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  max-width: 28rem;
}
.rama-extra img {
  width: 100%;
  height: auto;
}

@media (min-width: 56rem) {
  .rama {
    grid-template-columns: 1.08fr 0.92fr;
  }
  .rama:nth-child(even) .rama-foto {
    order: 2;
  }
  .rama:nth-child(even) .rama-dicho {
    order: 1;
  }

  /* la foto sale al borde: la página se siente más grande */
  .rama-foto {
    margin-left: calc(var(--margen) * -1);
  }
  .rama:nth-child(even) .rama-foto {
    margin-left: 0;
    margin-right: calc(var(--margen) * -1);
  }
}

/* ============================= ITINERARIO =============================== */

.ruta {
  position: relative;
  z-index: 1;
  background: var(--luz);
  color: var(--tinta);
}

.ruta-fija {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: clamp(1.5rem, 4vh, 2.75rem);
  padding: clamp(2.5rem, 7vh, 4.5rem) 0;
  overflow: hidden;
}

.ruta-cabeza {
  display: grid;
  gap: 0.75rem clamp(2rem, 5vw, 4rem);
  align-items: end;
  padding: 0 var(--margen);
}

.ruta-cabeza h2 {
  font-size: clamp(2rem, 4.4vw, 3.875rem);
  line-height: 0.96;
  max-width: 14ch;
}

.ruta-cabeza p {
  max-width: 46ch;
  font-size: 1.0625rem;
  line-height: 1.45;
  color: var(--sombra);
}

@media (min-width: 55.0625rem) {
  .ruta-cabeza {
    grid-template-columns: auto minmax(18rem, 30rem);
    justify-content: space-between;
  }
}

.ruta-pista {
  display: flex;
  gap: clamp(1rem, 2.4vw, 2.25rem);
  margin: 0;
  padding: 0 var(--margen);
  list-style: none;
  will-change: transform;
}

.ruta-pista::after {
  content: "";
  flex: 0 0 var(--margen);
}

.parada {
  flex: 0 0 clamp(15rem, 27vw, 24rem);
}

.parada figure {
  aspect-ratio: 5 / 4;
  overflow: hidden;
  background: var(--bruma);
  margin-bottom: clamp(0.75rem, 1.6vw, 1rem);
}

.parada figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: var(--grado);
}

.parada-n {
  font-size: 0.8125rem;
  font-variant-numeric: tabular-nums;
  color: var(--agua);
}

.parada h3 {
  font-size: clamp(1.5rem, 2.6vw, 2.125rem);
  margin: 0.25rem 0 0.3rem;
  color: var(--tinta);
}

.parada-dato {
  font-size: 0.8125rem;
  color: var(--sombra);
}

.parada-nota {
  margin-top: 0.5rem;
  font-size: 1.0625rem;
  line-height: 1.42;
  color: var(--sombra);
  max-width: 34ch;
}

/* horizontal pan only where there is room for it */
@media (min-width: 55.0625rem) {
  .ruta {
    height: 300vh;
  }
  .ruta-fija {
    position: sticky;
    top: 0;
    height: 100svh;
  }
}

@media (max-width: 55rem) {
  .ruta-pista {
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 1rem;
  }
  .parada {
    scroll-snap-align: start;
  }
}

/* =============================== PASOS ================================== */

.pasos {
  position: relative;
  z-index: 1;
  background: var(--noche-2);
  padding: clamp(3rem, 8vh, 6rem) var(--margen);
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.pasos h2 {
  font-size: clamp(2.25rem, 6vw, 5rem);
  max-width: 14ch;
}

.pasos ol {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: paso;
  display: grid;
  gap: clamp(1.1rem, 2.6vh, 1.9rem);
}

.pasos li {
  counter-increment: paso;
  position: relative;
  padding-top: 1.4rem;
  border-top: 1px solid rgba(216, 207, 192, 0.18);
}

.pasos li::before {
  content: counter(paso, decimal-leading-zero);
  position: absolute;
  top: 1.4rem;
  left: 0;
  font-family: var(--texto);
  font-weight: 500;
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
  color: var(--agua);
}

.pasos li > * {
  padding-left: 3.75rem;
}

.pasos li h3 {
  font-size: clamp(1.75rem, 3.2vw, 2.75rem);
  line-height: 1.06;
  margin-bottom: 0.4rem;
}

.pasos li p {
  max-width: 52ch;
  font-size: clamp(1.0625rem, 1rem + 0.32vw, 1.25rem);
  line-height: 1.5;
  color: var(--bruma);
}

@media (min-width: 62rem) {
  .pasos {
    grid-template-columns: 0.85fr 1.15fr;
  }
}

/* ============================== CIERRE ================================== */

.cierre {
  position: relative;
  z-index: 1;
  min-height: 100svh;
  display: grid;
  grid-template-rows: 1fr auto auto;
  align-items: center;
  overflow: hidden;
  padding: clamp(3rem, 9vh, 6rem) var(--margen) var(--margen);
}

.cierre-medio {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.cierre-medio::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      to top,
      rgba(7, 16, 15, 0.92) 0%,
      rgba(7, 16, 15, 0.6) 55%,
      rgba(7, 16, 15, 0.8) 100%
    );
}

.cierre-texto {
  position: relative;
  z-index: 1;
  max-width: 40rem;
}

.cierre-texto h2 {
  font-size: clamp(2.5rem, 7vw, 6rem);
  line-height: 1;
  letter-spacing: -0.015em;
}

.cierre-texto p {
  margin-top: clamp(0.75rem, 1.8vw, 1.15rem);
  max-width: 42ch;
  font-size: clamp(1.125rem, 1rem + 0.5vw, 1.4375rem);
  line-height: 1.45;
  color: var(--bruma);
}

.boton {
  display: inline-block;
  margin-top: clamp(1.35rem, 3vw, 2.1rem);
  padding: 1.2rem 2.6rem;
  background: var(--agua);
  color: var(--noche);
  font-size: 1.125rem;
  text-decoration: none;
  transition: background 0.3s ease, color 0.3s ease;
}

.boton:hover,
.boton:focus-visible {
  background: var(--luz);
  color: var(--tinta);
}

/* el colibrí y la W cierran la página, justo encima de la línea del pie */
.pie-marca {
  position: relative;
  z-index: 1;
  display: block;
  width: auto;
  height: clamp(3.25rem, 6vw, 5rem);
  margin-top: clamp(1.5rem, 4vh, 2.75rem);
}

.pie {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2.5rem;
  margin-top: clamp(1.75rem, 5vh, 3.25rem);
  padding-top: 0.9rem;
  border-top: 1px solid rgba(216, 207, 192, 0.24);
  font-size: 0.8125rem;
  color: var(--bruma);
}

.pie span:first-child {
  letter-spacing: 0.005em;
}

.pie a {
  color: var(--arena);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.25em;
}

/* la firma del estudio, al otro extremo del pie */
.pie-firma {
  margin-left: auto;
  color: var(--sombra);
}

.pie-firma a {
  color: var(--bruma);
}

/* ========================== REDUCED MOTION ============================== */

@media (prefers-reduced-motion: reduce) {
  .portada .lienzo {
    animation: none;
    transform: none;
  }
  .corte > span {
    transform: none !important;
    transition: none;
  }
  .js .revelar {
    clip-path: none;
    transition: none;
  }
  .pais-fondo video {
    transition: none;
  }
  .ruta-pista {
    transition: none;
  }
  .boton {
    transition: none;
  }
}