/* ============================================================
   Yalei Chen — Paisajismo
   Paleta: hueso / tinta / verde bosque / arcilla
   ============================================================ */

:root{
  --bone:#f7f5f0;
  --bone-2:#efece4;
  --ink:#161a17;
  --ink-60:rgba(22,26,23,.62);
  --ink-40:rgba(22,26,23,.40);
  --ink-12:rgba(22,26,23,.12);
  --forest:#2f4a3c;
  --forest-dark:#22372c;
  --clay:#b9765a;

  --font-display:"Instrument Serif",ui-serif,Georgia,"Times New Roman",serif;
  --font-body:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;

  --wrap:1240px;
  --gut:clamp(1.25rem,5vw,4rem);
  --sec:clamp(4.5rem,11vw,9.5rem);
  --radius:2px;
}

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

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:5rem;
}

body{
  margin:0;
  background:var(--bone);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:clamp(1rem,.96rem + .2vw,1.0625rem);
  font-weight:300;
  line-height:1.65;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{max-width:100%;height:auto;display:block}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit}

:focus-visible{
  outline:2px solid var(--forest);
  outline-offset:3px;
  border-radius:1px;
}

.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gut);
}

/* Evita que las imágenes con ancho intrínseco grande desborden las columnas */
.hero-grid > *,
.project > *,
.about-grid > *,
.skills-grid > *,
.facts > *{min-width:0}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:100;
  background:var(--ink);color:var(--bone);padding:.75rem 1.25rem;
}
.skip-link:focus{left:.5rem;top:.5rem}

/* ── Tipografía ───────────────────────────────────────────── */

.display{
  font-family:var(--font-display);
  font-weight:400;
  font-size:clamp(2.55rem,1.4rem + 6.4vw,6rem);
  line-height:1.02;
  letter-spacing:-.02em;
  margin:0 0 1.5rem;
}
.display em{font-style:italic;color:var(--forest)}

.display-sm{
  font-family:var(--font-display);
  font-weight:400;
  font-size:clamp(2rem,1.3rem + 3.2vw,3.5rem);
  line-height:1.08;
  letter-spacing:-.015em;
  margin:0 0 1rem;
}

.eyebrow{
  font-size:.72rem;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--ink-40);
  margin:0 0 1.25rem;
}

.lede{
  font-size:clamp(1.05rem,1rem + .45vw,1.3rem);
  line-height:1.55;
  color:var(--ink-60);
  max-width:46ch;
  margin:0 0 2rem;
}

.section{padding-block:var(--sec)}
.section-head{max-width:52ch;margin-bottom:clamp(2.5rem,6vw,4.5rem)}
.section-note{color:var(--ink-60);margin:0}

/* ── Header ───────────────────────────────────────────────── */

.site-header{
  position:sticky;top:0;z-index:50;
  background:color-mix(in srgb,var(--bone) 82%,transparent);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s ease,padding .3s ease;
}
.site-header.is-stuck{border-bottom-color:var(--ink-12)}

.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:1.5rem;
  min-height:4.5rem;
}

.brand{
  text-decoration:none;
  display:flex;align-items:baseline;gap:.6rem;
  line-height:1;
}
.brand-name{
  font-family:var(--font-display);
  font-size:1.4rem;
  letter-spacing:-.01em;
}
.brand-role{
  font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-40);
}

.nav{display:flex;align-items:center;gap:clamp(.9rem,2.4vw,2.1rem)}
.nav a{
  text-decoration:none;
  font-size:.86rem;
  letter-spacing:.01em;
  color:var(--ink-60);
  padding-block:.35rem;
  position:relative;
  transition:color .2s ease;
}
.nav a::after{
  content:"";position:absolute;left:0;bottom:0;
  width:100%;height:1px;background:currentColor;
  transform:scaleX(0);transform-origin:left;
  transition:transform .3s cubic-bezier(.2,.7,.2,1);
}
.nav a:hover{color:var(--ink)}
.nav a:hover::after{transform:scaleX(1)}

.nav-cta{
  border:1px solid var(--ink-12);
  border-radius:100px;
  padding:.45rem 1.05rem !important;
  color:var(--ink) !important;
}
.nav-cta::after{display:none}
.nav-cta:hover{background:var(--ink);color:var(--bone) !important}

@media (max-width:700px){
  /* En móvil solo quedan «Contacto» y el selector de idioma */
  .nav > li:nth-child(-n+3){display:none}
  .brand-role{display:none}
  .nav{gap:.5rem}
}

/* ── Selector de idioma (funciona sin JS: <details> nativo) ── */

.lang-item{position:relative;display:flex}

.lang summary{
  list-style:none;
  cursor:pointer;
  display:inline-flex;align-items:center;gap:.4rem;
  font-size:.82rem;letter-spacing:.04em;
  color:var(--ink-60);
  padding:.45rem .8rem;
  border:1px solid var(--ink-12);
  border-radius:100px;
  transition:border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.lang summary::-webkit-details-marker{display:none}
.lang summary:hover{color:var(--ink);border-color:var(--ink)}
.lang[open] summary{color:var(--ink);border-color:var(--ink)}
.lang-globe{font-size:.9em;color:var(--forest)}

.lang-menu{
  position:absolute;
  top:calc(100% + .55rem);
  right:0;
  z-index:60;
  min-width:11rem;
  padding:.4rem;
  background:var(--bone);
  border:1px solid var(--ink-12);
  border-radius:10px;
  box-shadow:0 18px 40px -22px rgba(22,26,23,.45);
}
.lang-menu a{
  display:block;
  padding:.5rem .7rem;
  border-radius:6px;
  font-size:.9rem;
  color:var(--ink-60);
  text-decoration:none;
  transition:background .18s ease,color .18s ease;
}
.lang-menu a::after{display:none}
.lang-menu a:hover{background:var(--bone-2);color:var(--ink)}
.lang-menu a.is-current{color:var(--ink);background:var(--bone-2)}
.lang-menu a.is-current::before{content:"· ";color:var(--forest)}

/* ── Botones ──────────────────────────────────────────────── */

.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  text-decoration:none;
  font-size:.9rem;font-weight:400;letter-spacing:.02em;
  padding:.9rem 1.6rem;
  border-radius:100px;
  border:1px solid transparent;
  transition:background .25s ease,color .25s ease,border-color .25s ease,transform .25s ease;
}
.btn-primary{background:var(--forest);color:var(--bone)}
.btn-primary:hover{background:var(--forest-dark);transform:translateY(-2px)}
.btn-ghost{border-color:var(--ink-12);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px)}

.link-arrow{
  text-decoration:none;
  border-bottom:1px solid var(--ink-12);
  padding-bottom:.15rem;
  transition:border-color .25s ease;
}
.link-arrow::after{content:" →";transition:margin .25s ease}
.link-arrow:hover{border-color:var(--ink)}
.link-arrow:hover::after{margin-left:.2rem}

/* ── Hero ─────────────────────────────────────────────────── */

.hero{padding-top:clamp(3rem,7vw,6rem);padding-bottom:clamp(3rem,6vw,5rem)}

.hero-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(2.5rem,5vw,4rem);
  align-items:end;
}
@media (min-width:900px){
  .hero-grid{grid-template-columns:1.15fr .85fr;align-items:center}
}

.hero-text{max-width:46ch}
.hero-text .display{
  max-width:none;
  font-size:clamp(2.4rem,1.2rem + 5.2vw,4.6rem);
  text-wrap:balance;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:.75rem}

.hero-figure{
  margin:0;
  position:relative;
  overflow:hidden;
  border-radius:var(--radius);
  background:var(--bone-2);
}
/* --ar y --pos los pone build.py desde src/media.json */
.hero-figure img{
  width:100%;
  aspect-ratio:var(--ar,3/4);
  object-fit:cover;
  object-position:var(--pos,center);
}
@media (max-width:899px){
  /* Sin proporción declarada, en móvil la portada pasa a apaisada */
  .hero-figure img{aspect-ratio:var(--ar,4/3)}
}

.facts{
  margin-top:clamp(3.5rem,8vw,6rem);
  display:grid;
  grid-template-columns:1fr;
  gap:0;
  border-top:1px solid var(--ink-12);
}
.facts li{
  display:flex;align-items:baseline;gap:1rem;
  padding-block:1.2rem;
  border-bottom:1px solid var(--ink-12);
}
.fact-n{
  font-family:var(--font-display);
  font-size:1.6rem;
  color:var(--forest);
  min-width:3.2ch;
}
.fact-l{font-size:.9rem;color:var(--ink-60)}
@media (min-width:760px){
  .facts{grid-template-columns:repeat(3,1fr);border-bottom:1px solid var(--ink-12)}
  .facts li{border-bottom:0;flex-direction:column;gap:.35rem;padding-right:2rem}
  .facts li + li{border-left:1px solid var(--ink-12);padding-left:2rem}
  .fact-n{font-size:2.4rem}
}

/* ── Proyectos ────────────────────────────────────────────── */

.section-projects{
  background:var(--bone-2);
  border-block:1px solid var(--ink-12);
}

.projects{display:grid;gap:clamp(3.5rem,8vw,7rem)}

.project{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(1.25rem,3vw,3rem);
  align-items:start;
}
@media (min-width:860px){
  .project{grid-template-columns:1.05fr .95fr;align-items:center}
  .project:nth-child(even) .project-media{order:2}
}

.project-media{
  display:block;
  overflow:hidden;
  border-radius:var(--radius);
  background:var(--bone);
  position:relative;
}
/* --ar y --pos los pone build.py desde src/media.json, por si una imagen
   necesita otra proporción (una sección vertical, por ejemplo). */
.project-media img{
  width:100%;
  aspect-ratio:var(--ar,4/3);
  object-fit:cover;
  object-position:var(--pos,center);
  transition:transform .7s cubic-bezier(.2,.7,.2,1),filter .5s ease;
}
.project-media:hover img{transform:scale(1.035)}

.project-index{
  font-family:var(--font-display);
  font-size:1.05rem;
  color:var(--ink-40);
  margin:0 0 .6rem;
  letter-spacing:.04em;
}

.project-title{
  font-family:var(--font-display);
  font-weight:400;
  font-size:clamp(1.6rem,1.2rem + 1.6vw,2.5rem);
  line-height:1.12;
  letter-spacing:-.012em;
  margin:0 0 .5rem;
  max-width:26ch;
}

.project-place{
  font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink-40);
  margin:0 0 1.4rem;
}

.project-points{display:grid;gap:.7rem;margin-bottom:1.6rem;max-width:48ch}
.project-points li{
  position:relative;
  padding-left:1.1rem;
  color:var(--ink-60);
  font-size:.96rem;
  line-height:1.6;
}
.project-points li::before{
  content:"";position:absolute;left:0;top:.65em;
  width:5px;height:5px;border-radius:50%;
  background:var(--forest);
}

.tags{display:flex;flex-wrap:wrap;gap:.45rem}
.tags li{
  font-size:.72rem;letter-spacing:.06em;
  padding:.34rem .78rem;
  border:1px solid var(--ink-12);
  border-radius:100px;
  color:var(--ink-60);
  background:var(--bone);
}

/* ── Perfil ───────────────────────────────────────────────── */

.about-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(2.5rem,6vw,5rem);
  align-items:start;
}
@media (min-width:860px){
  .about-grid{grid-template-columns:.8fr 1.2fr}
}

.portrait{margin:0;overflow:hidden;border-radius:var(--radius);background:var(--bone-2)}
.portrait img{
  width:100%;
  aspect-ratio:var(--ar,4/5);
  object-fit:cover;
  object-position:var(--pos,center);
}

.about-text p{max-width:56ch;color:var(--ink-60)}
.about-text .display-sm{color:var(--ink)}

.timeline{margin:2.5rem 0;border-top:1px solid var(--ink-12)}
.timeline-row{
  display:grid;grid-template-columns:1fr;gap:.35rem;
  padding-block:1.4rem;
  border-bottom:1px solid var(--ink-12);
}
@media (min-width:600px){
  .timeline-row{grid-template-columns:14rem 1fr;gap:2rem}
}
.timeline dt{
  font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink-40);
  padding-top:.2rem;
}
.timeline dd{margin:0;color:var(--ink-60)}
.timeline dd strong{color:var(--ink);font-weight:500}

/* ── Capacidades ──────────────────────────────────────────── */

.section-skills{background:var(--forest);color:var(--bone)}
.section-skills .eyebrow{color:rgba(247,245,240,.5)}
.section-skills .display-sm{color:var(--bone)}

.skills-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));
  gap:1px;
  background:rgba(247,245,240,.18);
  border:1px solid rgba(247,245,240,.18);
  border-radius:var(--radius);
  overflow:hidden;
}

.skill-card{
  background:var(--forest);
  padding:clamp(1.5rem,3vw,2.25rem);
}
.skill-card h3{
  font-family:var(--font-body);
  font-size:.74rem;font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;
  color:rgba(247,245,240,.55);
  margin:0 0 1.15rem;
}
.skill-card ul{display:grid;gap:.55rem}
.skill-card li{font-size:1rem;color:rgba(247,245,240,.92)}

.langs li{
  display:flex;justify-content:space-between;align-items:baseline;gap:1rem;
  padding-bottom:.45rem;
  border-bottom:1px solid rgba(247,245,240,.14);
}
.langs .lvl{font-size:.78rem;color:rgba(247,245,240,.5);letter-spacing:.04em}

/* ── Contacto ─────────────────────────────────────────────── */

.section-contact{padding-bottom:clamp(3.5rem,8vw,7rem)}
.contact-inner{max-width:900px}
.contact-inner .display{max-width:20ch}

.contact-list{
  margin-top:clamp(2rem,5vw,3.5rem);
  border-top:1px solid var(--ink-12);
}
.contact-list li{
  display:grid;
  grid-template-columns:1fr;
  gap:.15rem;
  padding-block:1.15rem;
  border-bottom:1px solid var(--ink-12);
}
@media (min-width:600px){
  .contact-list li{grid-template-columns:11rem 1fr;gap:2rem;align-items:baseline}
}
.contact-label{
  font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-40);
}
.contact-list a{
  text-decoration:none;
  font-size:clamp(1.05rem,1rem + .4vw,1.25rem);
  border-bottom:1px solid var(--ink-12);
  padding-bottom:.1rem;
  transition:border-color .25s ease;
  justify-self:start;
}
.contact-list a:hover{border-color:var(--ink)}

/* ── Footer ───────────────────────────────────────────────── */

.site-footer{
  border-top:1px solid var(--ink-12);
  padding-block:2rem;
  font-size:.82rem;
  color:var(--ink-40);
}
.footer-inner{
  display:flex;flex-wrap:wrap;gap:.75rem 2rem;
  justify-content:space-between;align-items:center;
}
.footer-inner p{margin:0}
.site-footer a{text-decoration:none}
.site-footer a:hover{color:var(--ink)}

/* ── Animación de entrada ─────────────────────────────────── */

/* Sin JS (o si el script falla) el contenido se ve siempre: el estado
   oculto solo se aplica cuando la clase .js está presente en <html>. */
.js .reveal{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .85s cubic-bezier(.2,.7,.2,1),transform .85s cubic-bezier(.2,.7,.2,1);
  will-change:opacity,transform;
}
.js .reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}

/* ── Ajustes por idioma ───────────────────────────────────── */

/* Chino: las tipografías latinas no tienen caracteres CJK. Usamos las del
   sistema (no se descarga nada) y damos algo más de aire entre líneas. */
html[lang="zh-Hans"] body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",
              var(--font-body);
  line-height:1.8;
  letter-spacing:.01em;
}
html[lang="zh-Hans"] .display,
html[lang="zh-Hans"] .display-sm,
html[lang="zh-Hans"] .project-title,
html[lang="zh-Hans"] .brand-name,
html[lang="zh-Hans"] .fact-n,
html[lang="zh-Hans"] .project-index{
  font-family:"Songti SC","STSong","Noto Serif SC",var(--font-display);
  letter-spacing:0;
}
html[lang="zh-Hans"] .display{font-size:clamp(2.1rem,1.1rem + 4.4vw,3.9rem);line-height:1.25}
html[lang="zh-Hans"] .display-sm{line-height:1.35}
html[lang="zh-Hans"] .project-title{line-height:1.4}
html[lang="zh-Hans"] .display em{font-style:normal;font-weight:500}
html[lang="zh-Hans"] .eyebrow,
html[lang="zh-Hans"] .project-place,
html[lang="zh-Hans"] .contact-label,
html[lang="zh-Hans"] .skill-card h3{text-transform:none;letter-spacing:.1em}
html[lang="zh-Hans"] .hero-text,
html[lang="zh-Hans"] .lede{max-width:34em}

/* Alemán: palabras muy largas. Solo overflow-wrap (hyphens:auto partía mal los
   nombres propios: «Collse-rola»); así solo se corta si de verdad no cabe. */
html[lang="de"] .display,
html[lang="de"] .display-sm,
html[lang="de"] .project-title{overflow-wrap:break-word}
html[lang="de"] .display{font-size:clamp(2.1rem,1.1rem + 4.6vw,4.2rem)}

@media print{
  .site-header,.hero-actions,.site-footer a{display:none}
  body{background:#fff}
}