/* =========================================================
   1. VARIABLES — tu sistema de diseño
   ========================================================= */
:root {
  --bg: #141b26;                       /* azul-gris oscuro de base */
  --ink: #e4e6e1;                      /* texto */
  --dim: rgba(228, 230, 225, .55);     /* texto secundario */
  --line: rgba(228, 230, 225, .25);    /* líneas divisorias */
  --accent: #a9b8c8;                   /* acento */
  --glass: rgba(20, 27, 38, .45);      /* "cristal" del contenido */
  --font: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --pad: clamp(16px, 2.5vw, 40px);     /* margen lateral */
  --gap: clamp(14px, 1.5vw, 24px);     /* separación entre columnas */
  --ease: cubic-bezier(.22, .9, .3, 1);
   --ease: cubic-bezier(.22, .9, .3, 1);
  --text-scale: 0.7;                  /* 1 = tamaño actual · 1.15 = 15 % más grande */
    --nav-size: clamp(14px, 1.1vw, 20px);  /* tamaño del texto del menú de la portada (independiente) */
}

/* =========================================================
   2. RESET
   ========================================================= */
* { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: calc(clamp(16px, calc(12px + .5vw), 26px) * var(--text-scale));
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  color: var(--ink);
  font: 400 1rem/1.5 var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* =========================================================
   3. FONDO GLOBAL — degradado gris que se queda en toda la web
      y se mueve muy despacio
   ========================================================= */
body::before {
  content: "";
  position: fixed;          /* fijo: no se mueve al hacer scroll */
  inset: -15%;              /* más grande que la pantalla para poder moverse */
  z-index: -1;              /* detrás de todo */
  background:
    radial-gradient(ellipse 35% 30% at 72% 38%, rgba(165, 175, 185, .55), transparent 70%),
    radial-gradient(ellipse 45% 40% at 18% 28%, rgba(150, 155, 160, .5), transparent 70%),
    radial-gradient(ellipse 40% 35% at 30% 85%, rgba(125, 130, 135, .4), transparent 70%),
    radial-gradient(ellipse 60% 50% at 60% 60%, rgba(55, 70, 92, .7), transparent 70%),
    var(--bg);
  filter: blur(20px);
  animation: drift 40s ease-in-out infinite alternate;
}

@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(-6%, 4%, 0) scale(1.12); }
}

/* =========================================================
   4. UTILIDADES
   ========================================================= */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}
.big { font-size: clamp(1.9rem, calc(3.4vw * var(--text-scale)), 4rem); line-height: 1.05; letter-spacing: -.04em; }
.label {
  display: block;
  font-size: .875rem;
  color: var(--dim);
  margin-bottom: .4rem;
}

/* =========================================================
   5. PORTADA
   ========================================================= */
.hero {
  position: sticky;          /* se queda pegada arriba */
  top: 0;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
}

.hero-name {
  position: absolute;
  z-index: 1;
  font-size: 16vw;
  line-height: 1;
  letter-spacing: -.06em;
  white-space: nowrap;
}
.hero-name--1 { left: -.02em; top: -.12em; }
.hero-name--2 { right: .02em; bottom: -.17em; }

.hero-nav {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: var(--pad);
  right: var(--pad);
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  padding-top: .5em;
  font-size: var(--nav-size);     /* ← solo depende de su variable */
  letter-spacing: -.01em;
}
.hero-nav a { transition: opacity .3s; }
.hero-nav a:hover { opacity: .6; }
.hero-nav a.is-active::before {
  content: "";
  display: inline-block;
  width: .45em;
  height: .45em;
  margin-right: .45em;
  border-radius: 50%;
  background: currentColor;
  vertical-align: .1em;
}

.hero-copy {
  position: absolute;
  z-index: 2;
  left: var(--pad);
  bottom: 14px;
  font-size: .75rem;
}

/* =========================================================
   6. CONTENIDO — "hoja de cristal" que sube sobre la portada
   ========================================================= */
.page {
  position: relative;
  z-index: 3;                                  /* por encima de la portada */
  background: var(--glass);                    /* semitransparente: se ve el gris */
  backdrop-filter: blur(40px) saturate(120%);  /* desenfoca lo que hay debajo */
  -webkit-backdrop-filter: blur(40px) saturate(120%);
  border-top: 1px solid var(--line);
}

section { padding: 12vh var(--pad); }

h2 {
  font-size: clamp(2.6rem, calc(7vw * var(--text-scale)), 7rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -.05em;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  margin-bottom: 3rem;
}

/* =========================================================
   7. CONTACTO
   ========================================================= */
.contact-panel .big {
  max-width: 22ch;
  border-top: 1px solid var(--line);
  padding-top: 1.6rem;
}

.contact-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--gap);
  margin-top: 10vh;
}
.contact-list li {
  border-top: 1px solid var(--line);
  padding-top: .6rem;
}
.contact-list .label { display: block; }
.contact-list a {
  font-size: clamp(1.1rem, calc(1.6vw * var(--text-scale)), 1.6rem);
  letter-spacing: -.02em;
  overflow-wrap: anywhere;   /* que el email largo no se salga */
  transition: color .3s;
}
.contact-list a:hover { color: var(--accent); }

/* =========================================================
   8. WHO AM I — texto a la izquierda, foto a la derecha
   ========================================================= */
.about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto 1fr;        /* la última fila absorbe el alto de la foto */
  column-gap: clamp(32px, 6vw, 120px);      /* aire entre texto y foto */
  align-items: start;
}
.about h2 { grid-column: 1 / -1; }          /* el título ocupa las 2 columnas */
.about .big { grid-column: 1; max-width: 18ch; }
.about > p:not(.big) {
  grid-column: 1;
  max-width: 42ch;
  margin-top: 2.5rem;
  font-size: clamp(1.05rem, calc(1.3vw * var(--text-scale)), 1.4rem);
  line-height: 1.55;
  color: var(--dim);
}

.about figure {
  grid-column: 2;
  grid-row: 2 / span 2;                     /* a la derecha del texto */
  justify-self: end;
  width: min(100%, 1500px);                  /* más grande: hasta 720px */
  margin-right: clamp(0px, 5vw, 110px);     /* aire respecto al borde de la página */
  margin-top: 1rem;
  aspect-ratio: hidden;                     
  overflow: hidden;
}
.about figure img {
  width: block;
  height: 100%;
  object-fit: auto;                       
}

/* =========================================================
   9. EDUCATION & TRAINING
   ========================================================= */
.education {
  --edu-scale: 1;                          /* 1 = tamaño original · 1.3 = 30 % más grande */
  font-size: calc(1rem * var(--edu-scale));
}
.education h2 { font-size: clamp(2.4rem, calc(7vw * var(--text-scale)), 6rem); }

   .edu-item {
  display: grid;
  grid-template-columns: 1fr 3fr;           /* fecha | contenido */
  column-gap: var(--gap);
  border-top: 1px solid var(--line);
  padding: 1.6rem 0 2.4rem;
}
.edu-item > * { grid-column: 2; }
.edu-item .edu-date {
  grid-column: 1;
  grid-row: 1 / span 20;
  color: var(--dim);
}
.edu-item h3 + .edu-place + h3 { margin-top: 1em; }   /* dos títulos en el mismo bloque (idiomas) */
.edu-place { color: var(--dim); margin-top: .3rem; }

.coursework-title {
  margin-top: 1.8rem;
  margin-bottom: .8rem;
  font-size: .8125rem;
  font-weight: 400;
  color: var(--dim);
  text-transform: uppercase;
  letter-spacing: .08em;
}

.coursework { max-width: 70ch; margin-top: 1rem; }
.coursework li {
  position: relative;
  padding-left: 1.2em;
  margin-bottom: .7em;
  line-height: 1.5;
}
.coursework li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .6em;
  width: .35em;
  height: .35em;
  border-radius: 50%;
  background: var(--accent);
}
.coursework strong { font-weight: 600; }

/* =========================================================
   10. INTERESTS — tres columnas
   ========================================================= */
.interest-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--gap);
}
.interest-list li {
  border-top: 1px solid var(--line);
  padding-top: .8rem;
}
.interest-list h3 {
  font-size: 1.6rem;
  font-weight: 500;
  letter-spacing: -.03em;
  margin-bottom: .6rem;
}
.interest-list p { color: var(--dim); max-width: 32ch; }
.more { margin-top: 1rem; }
.more summary {
  cursor: pointer;
  list-style: none;              /* quita el triángulo por defecto */
  font-size: .875rem;
  color: var(--accent);
}
.more summary::-webkit-details-marker { display: none; }  /* triángulo en Safari */
/* Texto del botón: "Read more" cerrado, "Read less" abierto */
.more .when-open { display: none; }
.more[open] .when-open { display: inline; }
.more[open] .when-closed { display: none; }
/*+ y - del read more y read less*/
.more summary::after { content: " +"; }
.more[open] summary::after { content: " −"; }
.more p { margin-top: .8rem; color: var(--dim); max-width: 46ch; }
.more a { text-decoration: underline; text-underline-offset: 2px; }
/* =========================================================
   11. PIE
   ========================================================= */
.footer {
  padding: 10vh var(--pad) 2rem;
  border-top: 1px solid var(--line);
  font-size: .8125rem;
  overflow: hidden;
}
.giant {
  font-size: 13vw;
  line-height: .9;
  letter-spacing: -.06em;
  white-space: nowrap;
  margin-bottom: 2rem;
}

/* =========================================================
   12. MÓVIL
   ========================================================= */
@media (max-width: 860px) {
  .hero-name { font-size: 20vw; }
  .hero-nav { flex-wrap: wrap; gap: .4rem 1.2rem; justify-content: flex-start; }

  .contact-list,
  .interest-list { grid-template-columns: 1fr 1fr; }

  .about { grid-template-columns: 1fr; }
  .about figure { grid-column: 1; grid-row: auto; justify-self: start; margin: 2.5rem 0 0; width: min(100%, 420px); }

  .edu-item { grid-template-columns: 1fr; }
  .edu-item .edu-date { grid-row: auto; margin-bottom: .4rem; }
  .edu-item > * { grid-column: 1; }
}

@media (max-width: 520px) {
  .contact-list,
  .interest-list { grid-template-columns: 1fr; }
}

/* Si la persona tiene desactivadas las animaciones en su sistema */
@media (prefers-reduced-motion: reduce) {
  body::before { animation: none; }
  html { scroll-behavior: auto; }
}
/* =========================================================
   13. LIGHTBOX — imagen ampliada sobre la página
   ========================================================= */
.lightbox {
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  border: 0;
  padding: var(--pad);
  background: transparent;
  color: var(--ink);
}
.lightbox[open] {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  animation: lb-in .35s var(--ease);
}
.lightbox::backdrop {
  background: rgba(10, 13, 18, .75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.lightbox[open]::backdrop { animation: lb-fade .35s ease; }

.lightbox-img {
  max-width: min(var(--lb-width, 1100px), 100%);  /* ancho máximo: personalizable por imagen */
  max-height: var(--lb-height, 85vh);              /* alto máximo: personalizable por imagen */
  object-fit: contain;
  box-shadow: 0 30px 80px rgba(0, 0, 0, .5);
}
.lightbox-caption { color: var(--dim); font-size: .875rem; }

.lightbox-close {
  position: fixed;
  top: var(--pad);
  right: var(--pad);
  width: 2.8rem;
  height: 2.8rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(20, 27, 38, .6);
  color: var(--ink);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  transition: background .3s, transform .3s var(--ease);
}
.lightbox-close:hover { background: rgba(228, 230, 225, .15); transform: rotate(90deg); }

body:has(.lightbox[open]) { overflow: hidden; }

@keyframes lb-in   { from { opacity: 0; transform: scale(.97); } }
@keyframes lb-fade { from { opacity: 0; } }