/* ============================================================
   Arturo Fuentes Calle — personal site
   Minimal index-style layout, three languages, no dependencies.
   ============================================================ */

/* ---------- tokens ---------- */
:root {
  --paper: #f4f2ee;
  --ink: #101012;
  --ink-soft: #56565c;
  --line: rgba(16, 16, 18, .14);
  --line-soft: rgba(16, 16, 18, .07);
  --accent: #d8340f;
  --hover: rgba(16, 16, 18, .04);

  --bg: var(--paper);
  --fg: var(--ink);
  --fg-soft: var(--ink-soft);

  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Inter Tight", Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  --pad: clamp(1.25rem, 4vw, 4.5rem);
  --rail-w: 13rem;
  --maxw: 96rem;
  --ease: cubic-bezier(.22, 1, .36, 1);
}

:root[data-theme="dark"] {
  --bg: #0b0b0c;
  --fg: #eceae5;
  --fg-soft: #8f8d88;
  --line: rgba(236, 234, 229, .16);
  --line-soft: rgba(236, 234, 229, .08);
  --accent: #ff3d17;
  --hover: rgba(236, 234, 229, .05);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: clamp(1rem, .95rem + .2vw, 1.0625rem);
  line-height: 1.55;
  font-synthesis-weight: none;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background .5s var(--ease), color .5s var(--ease);
}
h1, h2, h3, p, ul, li, figure { margin: 0; }
ul { padding: 0; list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection { background: var(--accent); color: var(--bg); }

/* ---------- backdrop ---------- */
#field {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: .5;
  pointer-events: none;
}
/* A quiet vignette so the flow field never competes with the text. */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(120% 90% at 50% 0%, transparent 45%, color-mix(in srgb, var(--bg) 82%, transparent) 100%);
}

main, .topbar, .progress { position: relative; z-index: 2; }

/* ---------- skip link ---------- */
.skip {
  position: fixed;
  top: .75rem;
  left: .75rem;
  z-index: 60;
  padding: .5rem .9rem;
  background: var(--fg);
  color: var(--bg);
  font-family: var(--mono);
  font-size: .75rem;
  transform: translateY(-200%);
  transition: transform .25s var(--ease);
}
.skip:focus { transform: none; }

/* ---------- topbar ---------- */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .9rem var(--pad);
  font-family: var(--mono);
  font-size: .75rem;
  letter-spacing: .04em;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color .4s var(--ease), background .4s var(--ease);
}
.topbar.is-stuck { border-bottom-color: var(--line-soft); }

.topbar__id { display: inline-flex; align-items: center; gap: .55rem; }
.topbar__name { text-transform: uppercase; }
.dot {
  width: .45rem; height: .45rem;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2.6s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(.62); opacity: .55; }
}

.topbar__tools { display: flex; align-items: center; gap: 1rem; }

/* language switcher */
.langs { display: inline-flex; align-items: center; gap: .1rem; }
.lang {
  padding: .3rem .5rem;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--fg-soft);
  border: 1px solid transparent;
  border-radius: 2px;
  transition: color .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}
.lang:hover { color: var(--fg); }
.lang[aria-current="true"] {
  color: var(--bg);
  background: var(--fg);
  border-color: var(--fg);
}

.theme-toggle {
  width: 1.9rem; height: 1.9rem;
  display: grid; place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: border-color .25s var(--ease), transform .5s var(--ease);
}
.theme-toggle:hover { border-color: var(--fg); transform: rotate(35deg); }
.theme-toggle__icon {
  width: .7rem; height: .7rem;
  border-radius: 50%;
  background: var(--fg);
  box-shadow: inset -.28rem -.14rem 0 0 var(--bg);
}
:root[data-theme="light"] .theme-toggle__icon { box-shadow: inset 0 0 0 0 var(--bg); background: var(--accent); }

/* scroll progress */
.progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 1px;
  z-index: 41;
  background: transparent;
}
.progress i {
  display: block;
  height: 100%;
  width: 0;
  background: var(--accent);
  transform-origin: left;
}

/* ---------- hero ---------- */
.hero {
  min-height: 100svh;
  padding: 7rem var(--pad) 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 3rem;
  max-width: var(--maxw);
  margin-inline: auto;
}
.hero__inner {
  padding-top: clamp(1rem, 6vh, 5rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(1.5rem, 5vw, 4.5rem);
  align-items: end;
}
.hero__text { min-width: 0; }

.hero__eyebrow {
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--fg-soft);
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: clamp(1.5rem, 5vh, 3rem);
}
.hero__eyebrow .sep { color: var(--accent); }

/* Portrait: a full column of image next to the name, no mask. */
.portrait {
  margin: 0;
  align-self: end;
  width: clamp(13rem, 24vw, 22rem);
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--hover);
  animation: fade 1.1s var(--ease) .35s both;
}
.portrait img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 30%;
  transition: transform 1.2s var(--ease), filter .6s var(--ease);
}
.portrait:hover img { transform: scale(1.035); }

.hero__title {
  font-size: clamp(2.9rem, 10.5vw, 9rem);
  line-height: .9;
  font-weight: 500;
  letter-spacing: -.04em;
  text-transform: uppercase;
}
/* padding + negative margin keeps the mask off the glyphs while still hiding the rise */
.hero__title .line {
  display: block;
  overflow: hidden;
  padding-bottom: .09em;
  margin-bottom: -.09em;
}
/* Animations start from the hidden state, never rest on it: if they never run,
   the text is simply there. */
.hero__title .line > span {
  display: block;
  animation: rise 1.1s var(--ease) both;
}
.hero__title .line:nth-child(2) > span { animation-delay: .09s; }
.hero__title .line:nth-child(3) > span { animation-delay: .18s; color: var(--fg-soft); }
@keyframes rise {
  from { transform: translateY(105%); }
  to { transform: none; }
}

.hero__tagline {
  margin-top: clamp(1.5rem, 4vh, 2.5rem);
  max-width: 44ch;
  font-size: clamp(1.05rem, 1.6vw, 1.4rem);
  line-height: 1.4;
  letter-spacing: -.01em;
  animation: fade 1s var(--ease) .5s both;
}
@keyframes fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

.hero__now {
  margin-top: 2rem;
  display: flex;
  gap: 1rem;
  align-items: baseline;
  max-width: 52ch;
  animation: fade 1s var(--ease) .7s both;
}
.hero__now p { font-size: .92rem; color: var(--fg-soft); }
.tag {
  flex: none;
  font-family: var(--mono);
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  padding: .2rem .45rem;
  border: 1px solid var(--line);
  color: var(--accent);
}

.hero__foot {
  display: grid;
  grid-template-columns: auto minmax(0, 40rem);
  gap: 2rem;
  align-items: end;
  justify-content: space-between;
  border-top: 1px solid var(--line-soft);
  padding-top: 1.5rem;
}
.hero__intro { font-size: .88rem; color: var(--fg-soft); text-wrap: pretty; }

.scroll-cue { display: block; width: 1px; height: 3rem; background: var(--line); position: relative; overflow: hidden; }
.scroll-cue i {
  position: absolute; inset: 0;
  background: var(--accent);
  animation: cue 2.2s var(--ease) infinite;
}
@keyframes cue {
  0% { transform: translateY(-100%); }
  60%, 100% { transform: translateY(100%); }
}

/* ---------- layout: rail + content ---------- */
.layout {
  display: grid;
  grid-template-columns: var(--rail-w) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 0 var(--pad);
}

.rail { position: relative; }
.rail__label {
  font-family: var(--mono);
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--fg-soft);
  margin-bottom: .75rem;
}
.rail__nav {
  position: sticky;
  top: 4.5rem;
  display: flex;
  flex-direction: column;
  gap: .1rem;
  padding-bottom: 3rem;
}
.rail__link {
  display: grid;
  grid-template-columns: 1.8rem 1fr;
  align-items: baseline;
  gap: .35rem;
  padding: .28rem 0;
  font-family: var(--mono);
  font-size: .76rem;
  color: var(--fg-soft);
  transition: color .25s var(--ease), transform .35s var(--ease);
}
.rail__link span:first-child { font-size: .66rem; opacity: .6; }
.rail__link:hover { color: var(--fg); transform: translateX(3px); }
.rail__link.is-active { color: var(--accent); }
.rail__link.is-active span:first-child { opacity: 1; }

/* ---------- sections ---------- */
.section { padding: clamp(4rem, 12vh, 9rem) 0 0; scroll-margin-top: 5rem; }
.section:last-of-type { padding-bottom: 2rem; }

.section__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 24rem);
  gap: 1.5rem;
  align-items: end;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--fg);
}
.section__num {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--accent);
  margin-bottom: .5rem;
}
.section__title {
  font-size: clamp(1.8rem, 4.5vw, 3.4rem);
  font-weight: 500;
  letter-spacing: -.03em;
  line-height: 1;
  text-transform: uppercase;
}
.section__note { font-size: .85rem; color: var(--fg-soft); padding-bottom: .35rem; }

.group__label {
  margin-top: 2.5rem;
  padding-bottom: .5rem;
  font-family: var(--mono);
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--fg-soft);
  border-bottom: 1px solid var(--line-soft);
}

/* ---------- entry rows ---------- */
.row { border-bottom: 1px solid var(--line-soft); }

.row__btn {
  position: relative;
  width: 100%;
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr) minmax(0, 1.1fr) 2rem;
  gap: 1rem;
  align-items: baseline;
  text-align: left;
  padding: 1.15rem .75rem 1.15rem .75rem;
  transition: background .35s var(--ease), padding-left .35s var(--ease);
}
.row__btn::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform .4s var(--ease);
}
.row__btn:hover, .row.is-open > .row__btn { background: var(--hover); }
.row__btn:hover::before, .row.is-open > .row__btn::before { transform: scaleY(1); transform-origin: top; }
.row__btn:hover { padding-left: 1.15rem; }

.row__period {
  font-family: var(--mono);
  font-size: .75rem;
  color: var(--fg-soft);
  white-space: nowrap;
}
.row__title {
  font-size: clamp(1rem, 1.4vw, 1.22rem);
  font-weight: 500;
  letter-spacing: -.015em;
  line-height: 1.25;
  text-wrap: balance;
}
.row.is-open .row__title { color: var(--accent); }
.row__org { font-size: .85rem; color: var(--fg-soft); text-wrap: pretty; }

.row__mark {
  justify-self: end;
  align-self: center;
  font-family: var(--mono);
  font-size: .95rem;
  color: var(--fg-soft);
  transition: transform .4s var(--ease), color .25s var(--ease);
}
.row__btn:hover .row__mark { color: var(--accent); }
.row.is-open .row__mark { transform: rotate(45deg); color: var(--accent); }
.row--static .row__mark { opacity: 0; }

.row__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .45s var(--ease);
}
.row.is-open .row__panel { grid-template-rows: 1fr; }
.row__panel > div { overflow: hidden; }
.row__inner {
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr);
  gap: 1rem;
  padding: 0 .75rem 1.6rem 1.15rem;
}
.row__inner > .spacer { grid-column: 1; }
.row__body { grid-column: 2; max-width: 62ch; display: grid; gap: .75rem; }
/* ---------- medios: imágenes, vídeo y embeds ---------- */
.media-grid {
  display: grid;
  gap: .9rem;
  margin: 0 0 .35rem;
  max-width: 46rem;
}
/* Con varios medios en fila, todos comparten formato para que la retícula
   no quede a saltos; con uno solo se respeta su proporción original. */
.media-grid--multi {
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  align-items: start;
}
.media-grid--multi .media-item img,
.media-grid--multi .media-item video {
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.media-item { margin: 0; }
.media-item img,
.media-item video {
  display: block;
  width: 100%;
  height: auto;
  background: var(--hover);
}
.media-item figcaption {
  margin-top: .45rem;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .02em;
  color: var(--fg-soft);
}
.embed {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--hover);
}
.embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* La sección y el subapartado llevan sus medios a todo el ancho de la columna. */
.section > .media-grid,
.rows > .media-grid { margin: 1.5rem 0 .5rem; }

/* ---------- enlaces ---------- */
.links {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.25rem;
  margin-top: .35rem;
}
.section > .links,
.rows > .links { margin: .9rem 0 1.5rem; }

.link-chip {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding-bottom: .15rem;
  font-family: var(--mono);
  font-size: .75rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--line);
  transition: color .25s var(--ease), border-color .25s var(--ease), gap .3s var(--ease);
}
.link-chip:hover { color: var(--accent); border-color: var(--accent); gap: .7rem; }

.row__synopsis { font-size: 1rem; line-height: 1.5; }
.row__notes { display: grid; gap: .4rem; }
.row__notes li {
  position: relative;
  padding-left: 1.1rem;
  font-size: .87rem;
  color: var(--fg-soft);
}
.row__notes li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.row__link {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  margin-top: .25rem;
  padding-bottom: .15rem;
  font-family: var(--mono);
  font-size: .75rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--line);
  transition: color .25s var(--ease), border-color .25s var(--ease), gap .3s var(--ease);
}
.row__link:hover { color: var(--accent); border-color: var(--accent); gap: .7rem; }

/* ---------- toolbox ---------- */
.tools {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 2.5rem 2rem;
  padding-top: 2rem;
}
.tools__group h3 {
  font-family: var(--mono);
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--fg-soft);
  padding-bottom: .6rem;
  margin-bottom: .8rem;
  border-bottom: 1px solid var(--line-soft);
}
.tools__item { padding: .35rem 0; }
.tools__k { font-size: .95rem; }
.tools__v { font-family: var(--mono); font-size: .76rem; color: var(--fg-soft); }

/* ---------- contact ---------- */
.contact {
  max-width: var(--maxw);
  margin: clamp(5rem, 14vh, 10rem) auto 0;
  padding: clamp(3rem, 8vh, 6rem) var(--pad);
  border-top: 1px solid var(--line);
}
.contact__title {
  font-size: clamp(2rem, 6vw, 4.5rem);
  font-weight: 500;
  letter-spacing: -.03em;
  line-height: 1;
  text-transform: uppercase;
  margin: .5rem 0 1rem;
}
.contact__text { max-width: 42ch; color: var(--fg-soft); }
.contact__actions {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
}
.mail {
  display: inline-flex;
  align-items: baseline;
  gap: .6rem;
  font-size: clamp(1.1rem, 3vw, 2rem);
  letter-spacing: -.02em;
  padding-bottom: .2rem;
  border-bottom: 1px solid var(--line);
  transition: color .3s var(--ease), border-color .3s var(--ease), gap .35s var(--ease);
}
.mail:hover { color: var(--accent); border-color: var(--accent); gap: 1.1rem; }
.mail__arrow { font-size: .7em; }
.copy {
  font-family: var(--mono);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--fg-soft);
  padding: .5rem .9rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}
.copy:hover { color: var(--fg); border-color: var(--fg); }
.copy.is-done { color: var(--accent); border-color: var(--accent); }

/* ---------- footer ---------- */
.footer {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 2rem var(--pad) 2.5rem;
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--fg-soft);
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  align-items: center;
  justify-content: space-between;
}
.footer__row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  align-items: center;
}
.langs--foot .lang { font-size: .7rem; }
.totop { transition: color .25s var(--ease); }
.totop:hover { color: var(--accent); }

/* ---------- language transition ---------- */
.swapping .content,
.swapping .hero__inner,
.swapping .hero__foot,
.swapping .contact { opacity: .12; transition: opacity .18s linear; }
.content, .hero__inner, .hero__foot, .contact { transition: opacity .4s var(--ease); }

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(14px); }
.reveal.is-in {
  opacity: 1;
  transform: none;
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}

/* ---------- responsive ---------- */
@media (max-width: 62rem) {
  .layout { grid-template-columns: 1fr; }

  /* El índice no desaparece: pasa a ser una tira horizontal fija bajo la barra,
     justo antes del primer bloque. */
  .rail {
    /* sin esto, el grid dimensiona el índice al ancho de todos sus enlaces
       y la página entera se va a la derecha */
    min-width: 0;
    margin: 0 calc(var(--pad) * -1);
    padding: .45rem var(--pad);
    position: sticky;
    top: 3.4rem;
    z-index: 30;
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line-soft);
  }
  .rail__label { display: none; }
  .rail__nav {
    position: static;
    flex-direction: row;
    gap: 1.1rem;
    min-width: 0;
    padding-bottom: 0;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x proximity;
  }
  .rail__nav::-webkit-scrollbar { display: none; }
  .rail__link {
    grid-template-columns: auto auto;
    white-space: nowrap;
    padding: .15rem 0;
    scroll-snap-align: center;
  }
  .rail__link:hover { transform: none; }

  /* Los destinos quedan por debajo de la barra y de la tira del índice. */
  .section, .contact { scroll-margin-top: 7rem; }
  /* Year and marker keep the first line; the org drops underneath the title. */
  .row__btn { grid-template-columns: 5rem minmax(0, 1fr) 1.5rem; }
  .row__period { grid-column: 1; grid-row: 1; }
  .row__title { grid-column: 2; grid-row: 1; }
  .row__mark { grid-column: 3; grid-row: 1; align-self: baseline; }
  .row__org { grid-column: 2; grid-row: 2; }
  .row__inner { grid-template-columns: 1fr; padding-left: .75rem; }
  .row__inner > .spacer { display: none; }
  .row__body { grid-column: 1; }
  .section__head { grid-template-columns: 1fr; align-items: start; }
  .hero__foot { grid-template-columns: 1fr; }
  .hero__inner { grid-template-columns: 1fr; align-items: start; }
  .portrait {
    width: 100%;
    aspect-ratio: 5 / 4;
    margin-top: .5rem;
  }
  .portrait img { object-position: 50% 8%; }
  .scroll-cue { display: none; }
}

@media (max-width: 34rem) {
  .row__btn { grid-template-columns: 4.2rem minmax(0, 1fr) 1.2rem; gap: .75rem; padding-inline: .25rem; }
  .row__btn:hover { padding-left: .6rem; }
  .row__period { font-size: .68rem; }
  .footer { flex-direction: column; align-items: flex-start; }
  .topbar { font-size: .68rem; padding-inline: 1rem; }
  .topbar__tools { gap: .5rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .hero__title .line > span { transform: none; }
  .hero__tagline, .hero__now { opacity: 1; }
  .reveal { opacity: 1; transform: none; }

}

@media print {
  #field, .topbar, .rail, .progress, .scroll-cue, .row__mark { display: none !important; }
  body { background: #fff; color: #000; }
  .row__panel { grid-template-rows: 1fr !important; }
  .section { padding-top: 2rem; break-inside: avoid; }
}