/* ============================================================
   María Eugenia Moreno Sagredo — Arquitecta
   ============================================================ */

:root {
  --ink: #1f1c19;
  --ink-soft: #4a443d;
  --cream: #f6f1ea;
  --cream-2: #efe7db;
  --paper: #fffdfa;
  --line: #ddd2c2;
  --copper: #a8672f;
  --copper-dark: #7c4a1f;
  --copper-light: #c98a4f;
  --stone: #8a8378;
  --max: 1240px;
  --gap: clamp(1rem, 2vw, 2rem);
  --radius: 2px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: 'Jost', 'Segoe UI', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .display {
  font-family: 'Playfair Display', Georgia, 'Times New Roman', serif;
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 .5em;
  color: var(--ink);
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font-family: inherit; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(1.2rem, 4vw, 2.5rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6em;
  font-size: .78rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--copper);
  font-weight: 600;
  margin-bottom: .9em;
}
.eyebrow::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--copper);
}

.section {
  padding: clamp(3.5rem, 8vw, 6.5rem) 0;
}
.section-head {
  max-width: 680px;
  margin: 0 0 2.8rem;
}
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head p { color: var(--ink-soft); font-size: 1.05rem; }

.section--alt { background: var(--cream-2); }
.section--dark {
  background: var(--ink);
  color: var(--cream);
}
.section--dark h1, .section--dark h2, .section--dark h3 { color: var(--cream); }
.section--dark .section-head p { color: #cfc6b8; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: .6em;
  padding: .85em 1.8em;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  font-size: .82rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-weight: 600;
  background: transparent;
  cursor: pointer;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}
.btn:hover { background: var(--ink); color: var(--cream); }
.btn--solid { background: var(--copper); border-color: var(--copper); color: #fff; }
.btn--solid:hover { background: var(--copper-dark); border-color: var(--copper-dark); }
.btn--light { border-color: var(--cream); color: var(--cream); }
.btn--light:hover { background: var(--cream); color: var(--ink); }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  background: rgba(246,241,234,.0);
  transition: background .3s var(--ease), box-shadow .3s var(--ease), padding .3s var(--ease);
  padding: 1.4rem 0;
}
.site-header.is-scrolled {
  background: rgba(246,241,234,.96);
  backdrop-filter: blur(6px);
  box-shadow: 0 1px 0 var(--line);
  padding: .8rem 0;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: .8rem;
  font-family: 'Playfair Display', serif;
  font-weight: 600;
  color: var(--ink);
}
body.home .site-header:not(.is-scrolled) .brand { color: var(--cream); }
.brand-mark {
  width: 42px; height: 42px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: .8rem;
  letter-spacing: .05em;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 1.02rem; }
.brand-text span { font-size: .62rem; letter-spacing: .2em; text-transform: uppercase; color: var(--copper); font-family: 'Jost', sans-serif; }

.nav {
  display: flex;
  gap: clamp(1rem, 2vw, 2.1rem);
  font-size: .82rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}
body.home .site-header:not(.is-scrolled) .nav a { color: var(--cream); }
.nav a { position: relative; padding: .3em 0; }
.nav a::after {
  content: '';
  position: absolute; left: 0; right: 100%; bottom: 0;
  height: 1px; background: var(--copper);
  transition: right .25s var(--ease);
}
.nav a:hover::after { right: 0; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 30px; height: 22px;
  position: relative;
}
body.home .site-header:not(.is-scrolled) .nav-toggle span { background: var(--cream); }
.nav-toggle span {
  position: absolute; left: 0; right: 0; height: 2px; background: var(--ink);
  transition: transform .25s var(--ease), opacity .25s var(--ease), top .25s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 0; }
.nav-toggle span:nth-child(2) { top: 10px; }
.nav-toggle span:nth-child(3) { top: 20px; }
.nav-open .nav-toggle span:nth-child(1) { top: 10px; transform: rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle span:nth-child(3) { top: 10px; transform: rotate(-45deg); }

@media (max-width: 860px) {
  .nav-toggle { display: block; z-index: 620; }
  .nav {
    position: fixed; inset: 0;
    background: var(--ink);
    color: var(--cream);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1.6rem;
    font-size: 1.1rem;
    transform: translateY(-100%);
    transition: transform .4s var(--ease);
    z-index: 600;
  }
  body.home .site-header .nav a { color: var(--cream); }
  .nav-open .nav { transform: translateY(0); }
  .nav a::after { background: var(--copper); }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  color: var(--cream);
  overflow: hidden;
}
.hero-media {
  position: absolute; inset: 0;
  z-index: -1;
}
.hero-media img {
  width: 100%; height: 100%; object-fit: cover;
}
.hero-media::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(20,17,14,.35) 0%, rgba(20,17,14,.25) 40%, rgba(15,13,10,.88) 100%);
}
.hero-content {
  padding: 8rem 0 4.5rem;
  max-width: 760px;
}
.hero-content .eyebrow { color: var(--copper-light); }
.hero-content h1 {
  font-size: clamp(2.6rem, 6.5vw, 4.6rem);
  color: #fff;
}
.hero-content p {
  font-size: 1.1rem;
  max-width: 46ch;
  color: #e8e2d6;
  margin-bottom: 2rem;
}
.hero-scroll {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: .5rem;
  font-size: .68rem; letter-spacing: .2em; text-transform: uppercase; color: #cfc6b8;
}
.hero-scroll .line { width: 1px; height: 34px; background: linear-gradient(#cfc6b8, transparent); animation: scrolldown 1.8s infinite; }
@keyframes scrolldown { 0%{transform: scaleY(0); transform-origin: top;} 50%{transform: scaleY(1); transform-origin: top;} 51%{transform-origin: bottom;} 100%{transform: scaleY(0); transform-origin: bottom;} }

/* ---------- Timeline ---------- */
.timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 2.2rem 1.6rem;
  counter-reset: tl;
}
.timeline-item { position: relative; }
.timeline-photo {
  aspect-ratio: 4/5;
  overflow: hidden;
  margin-bottom: 1rem;
  background: var(--cream-2);
  border-radius: var(--radius);
}
.timeline-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.timeline-item:hover .timeline-photo img { transform: scale(1.06); }
.timeline-year {
  font-family: 'Playfair Display', serif;
  color: var(--copper);
  font-size: 1.3rem;
  margin-bottom: .15em;
}
.timeline-place { font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--stone); margin-bottom: .5em; }
.timeline-item p { font-size: .92rem; color: var(--ink-soft); margin: 0; }
.timeline-rail {
  display: none;
}
@media (min-width: 640px) {
  .timeline { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 980px) {
  .timeline { grid-template-columns: repeat(4, 1fr); }
}

/* ---------- Featured project ---------- */
.feature {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  background: var(--paper);
  border: 1px solid var(--line);
}
.feature-media { position: relative; aspect-ratio: 4/3; overflow: hidden; }
.feature-media img { width: 100%; height: 100%; object-fit: cover; }
.feature-body { padding: clamp(2rem, 4vw, 3.4rem); display: flex; flex-direction: column; justify-content: center; }
.feature-body h3 { font-size: clamp(1.7rem, 3vw, 2.3rem); }
.feature-body .loc { font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; color: var(--stone); margin-bottom: 1rem; }
.feature-body p { color: var(--ink-soft); margin-bottom: 1.8rem; }
@media (min-width: 860px) {
  .feature { grid-template-columns: 1.1fr 1fr; }
}

/* ---------- Project grid (home + listing) ---------- */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: var(--gap);
}
.card {
  position: relative;
  display: block;
  background: var(--paper);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.card:hover { transform: translateY(-5px); box-shadow: 0 18px 34px -18px rgba(31,28,25,.35); }
.card-media { aspect-ratio: 4/3; overflow: hidden; background: var(--cream-2); }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.card:hover .card-media img { transform: scale(1.08); }
.card-body { padding: 1.3rem 1.4rem 1.6rem; }
.card-tag { font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: var(--copper); margin-bottom: .5em; display: block; }
.card-body h3 { font-size: 1.18rem; margin-bottom: .3em; }
.card-body .loc { font-size: .8rem; color: var(--stone); }

/* ---------- Trayectoria stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.5rem;
  text-align: center;
}
.stat b { display: block; font-family: 'Playfair Display', serif; font-size: 2.6rem; color: var(--copper-light); }
.stat span { font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: #cfc6b8; }

/* ---------- Sobre mi ---------- */
.about {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}
.about-photo { aspect-ratio: 3/4; overflow: hidden; background: var(--cream-2); }
.about-photo img { width: 100%; height: 100%; object-fit: cover; }
.quote {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: clamp(1.2rem, 2.4vw, 1.5rem);
  color: var(--ink);
  border-left: 2px solid var(--copper);
  padding-left: 1.2rem;
  margin: 1.6rem 0;
}
@media (min-width: 860px) {
  .about { grid-template-columns: .8fr 1.2fr; }
}

/* ---------- Contact / Footer ---------- */
.contact-grid {
  display: grid;
  gap: 2rem;
}
.contact-item { padding: 1.4rem 0; border-top: 1px solid #3a352e; }
.contact-item span { display: block; font-size: .7rem; letter-spacing: .16em; text-transform: uppercase; color: var(--copper-light); margin-bottom: .4em; }
.contact-item a, .contact-item p { font-size: 1.05rem; margin: 0; }
@media (min-width: 700px) {
  .contact-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-item { border-top: none; border-left: 1px solid #3a352e; padding: 0 1.6rem; }
  .contact-item:first-child { border-left: none; padding-left: 0; }
}
.site-footer {
  background: var(--ink);
  color: #cfc6b8;
  padding: 3rem 0 2rem;
  font-size: .85rem;
}
.footer-bottom {
  display: flex; flex-wrap: wrap; gap: 1rem;
  justify-content: space-between;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid #3a352e;
}
.footer-bottom a { color: var(--copper-light); }

/* ---------- Proyectos listing page ---------- */
.page-hero {
  padding: 9.5rem 0 3.5rem;
  background: var(--cream-2);
  border-bottom: 1px solid var(--line);
}
.page-hero h1 { font-size: clamp(2.1rem, 4.5vw, 3.2rem); }
.page-hero p { color: var(--ink-soft); max-width: 60ch; }

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-bottom: 2.4rem;
}
.filter-btn {
  padding: .55em 1.1em;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: .78rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  background: var(--paper);
  cursor: pointer;
  transition: all .2s var(--ease);
}
.filter-btn:hover { border-color: var(--copper); }
.filter-btn.active { background: var(--ink); border-color: var(--ink); color: var(--cream); }

/* ---------- Gallery / project detail page ---------- */
.gallery-hero {
  position: relative;
  min-height: 62vh;
  display: flex;
  align-items: flex-end;
  color: #fff;
}
.gallery-hero .hero-media::after { background: linear-gradient(180deg, rgba(20,17,14,.25) 0%, rgba(15,13,10,.85) 100%); }
.gallery-hero-content { padding: 7rem 0 3rem; max-width: 760px; }
.gallery-hero h1 { color: #fff; font-size: clamp(2.1rem, 4.5vw, 3rem); }
.gallery-meta { display: flex; gap: 1.6rem; flex-wrap: wrap; font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--copper-light); margin-bottom: 1rem; }

.masonry {
  columns: 1;
  column-gap: .9rem;
}
.masonry figure {
  margin: 0 0 .9rem;
  break-inside: avoid;
  cursor: zoom-in;
  overflow: hidden;
  background: var(--cream-2);
}
.masonry img { width: 100%; display: block; transition: transform .5s var(--ease), opacity .3s; opacity: 0; }
.masonry img.loaded { opacity: 1; }
.masonry figure:hover img { transform: scale(1.03); }
@media (min-width: 620px) { .masonry { columns: 2; } }
@media (min-width: 980px) { .masonry { columns: 3; } }

.back-link {
  display: inline-flex; align-items: center; gap: .5em;
  font-size: .8rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--copper); margin-bottom: 1.6rem;
}

.related { margin-top: 4rem; }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 900;
  background: rgba(15,13,10,.96);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 3rem 1rem;
}
.lightbox.open { display: flex; }
.lightbox img { max-width: 100%; max-height: 84vh; object-fit: contain; box-shadow: 0 30px 60px rgba(0,0,0,.5); }
.lightbox-close, .lightbox-prev, .lightbox-next {
  position: absolute;
  background: none; border: 1px solid rgba(255,255,255,.4); color: #fff;
  cursor: pointer;
  border-radius: 50%;
  width: 46px; height: 46px;
  display: grid; place-items: center;
  font-size: 1.2rem;
  transition: background .2s;
}
.lightbox-close:hover, .lightbox-prev:hover, .lightbox-next:hover { background: rgba(255,255,255,.15); }
.lightbox-close { top: 1.5rem; right: 1.5rem; }
.lightbox-prev { left: 1.2rem; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 1.2rem; top: 50%; transform: translateY(-50%); }
.lightbox-count { position: absolute; bottom: 1.2rem; left: 50%; transform: translateX(-50%); color: #cfc6b8; font-size: .82rem; letter-spacing: .08em; }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Misc ---------- */
.divider { height: 1px; background: var(--line); margin: 0; }
.center-cta { text-align: center; margin-top: 3rem; }
.skeleton { background: linear-gradient(90deg, var(--cream-2) 25%, #e4d9c8 37%, var(--cream-2) 63%); background-size: 400% 100%; animation: shimmer 1.4s ease infinite; }
@keyframes shimmer { 0%{background-position: 100% 0} 100%{background-position: 0 0} }