/* =========================================================================
   TALLER AM — Arquitectura + BIM + Construcción
   Sistema visual editorial: negro, blanco, gris. Tono cálido solo en fotos.
   ========================================================================= */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; }
ul, ol { list-style: none; padding: 0; margin: 0; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; padding: 0; }
h1, h2, h3, h4, p, figure { margin: 0; }

:root {
  --ink: #121212;
  --ink-soft: #3a3a37;
  --paper: #faf9f6;
  --white: #ffffff;
  --line: #dedbd3;
  --line-soft: #ecebe6;
  --gray: #706e68;
  --gray-mute: #a6a49c;
  --ph-bg: #eceae3;
  --ph-line: #b9b6ac;
  --display: clamp(52px, 8.6vw, 132px);
  --h1: clamp(38px, 6vw, 76px);
  --h2: clamp(28px, 4vw, 48px);
  --h3: clamp(20px, 2.4vw, 28px);
  --body-lg: clamp(17px, 1.6vw, 21px);
  --gutter: 24px;
  --maxw: 1560px;
  --serif: "Fraunces", serif;
  --sans: "Manrope", "Inter", sans-serif;
  --ui: "Inter", sans-serif;
}

@media (min-width: 720px) { :root { --gutter: 48px; } }
@media (min-width: 1200px) { :root { --gutter: 88px; } }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--ui);
  font-size: 17px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gutter); }

.eyebrow {
  font-family: var(--ui); font-weight: 600; font-size: 12px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--gray);
}
.eyebrow::before { content: "— "; }

h1, h2, h3 { font-family: var(--sans); font-weight: 700; letter-spacing: -0.01em; }

.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--ink); color: var(--white);
  padding: 12px 18px; z-index: 200; font-size: 14px;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ---------- Encabezado ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100; background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.hdr {
  display: flex; align-items: center; justify-content: space-between;
  height: 76px;
}
.word { display: flex; align-items: center; }
.word-img { height: 54px; width: auto; }
.nav { display: none; }
.nav-list { display: flex; gap: 34px; align-items: center; }
.nav-list a {
  font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 6px 0; border-bottom: 1px solid transparent;
}
.nav-list a:hover, .nav-list a[aria-current="page"] { border-color: var(--ink); }
.hdr-cta { font-size: 13px; font-weight: 600; letter-spacing: 0.04em; border-bottom: 1px solid var(--ink); padding-bottom: 2px; white-space: nowrap; }
.burger { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; }
.burger .icon { width: 22px; height: 22px; }
.icon-x { display: none; }
.burger[aria-expanded="true"] .icon-menu { display: none; }
.burger[aria-expanded="true"] .icon-x { display: block; }

.mnav {
  position: fixed; inset: 76px 0 0 0; background: var(--paper); z-index: 90;
  display: flex; flex-direction: column; justify-content: center; gap: 8px;
  padding: 0 var(--gutter) 80px; transform: translateY(-8px); opacity: 0; pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.mnav.is-open { opacity: 1; transform: none; pointer-events: auto; }
.mnav a { font-family: var(--sans); font-size: clamp(30px, 9vw, 44px); font-weight: 700; padding: 10px 0; border-bottom: 1px solid var(--line); }
.mnav-cta { margin-top: 26px; }
.mnav-cta a { font-size: 16px; font-weight: 600; border-bottom: 1px solid var(--ink); display: inline-block; }

@media (min-width: 900px) {
  .nav { display: block; }
  .burger { display: none; }
  .mnav { display: none; }
  .hdr { height: 92px; }
}

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px; font-size: 13px; font-weight: 700;
  letter-spacing: 0.06em; text-transform: uppercase; padding: 16px 26px; border: 1px solid var(--ink);
}
.btn--dark { background: var(--ink); color: var(--white); }
.btn--dark:hover { background: #000; }
.btn--line { background: transparent; color: var(--ink); }
.btn--line:hover { background: var(--ink); color: var(--white); }
.btn--block { width: 100%; justify-content: center; }
.link-arrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; border-bottom: 1px solid var(--ink); padding-bottom: 3px; }
.link-arrow svg { width: 14px; height: 14px; }

/* ---------- Placeholders de imagen ---------- */
.ph {
  position: relative; background: var(--ph-bg);
  background-image: repeating-linear-gradient(135deg, transparent 0 18px, var(--line) 18px 19px);
  border: 1px solid var(--ph-line); display: flex; align-items: flex-end; overflow: hidden;
}
.ph-tag {
  margin: 14px; padding: 8px 12px; background: var(--paper); border: 1px solid var(--ph-line);
  font-family: "IBM Plex Mono", monospace; font-size: 11px; color: var(--ink-soft); line-height: 1.5; max-width: calc(100% - 28px);
}
.ph-tag b { display: block; font-family: var(--ui); font-size: 11px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink); margin-bottom: 2px; }
.ph--filled { background: var(--paper); background-image: none; border: none; }
.ph--filled img { width: 100%; height: 100%; object-fit: cover; display: block; }
.ph--1x1 { aspect-ratio: 1/1; }
.ph--4x5 { aspect-ratio: 4/5; }
.ph--16x9 { aspect-ratio: 16/9; }
.ph--3x2 { aspect-ratio: 3/2; }
.ph--hero { aspect-ratio: 16/9; }
@media (min-width: 900px) { .ph--hero { aspect-ratio: 21/10; } }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }
.js-off .reveal, html:not(.js) .reveal { opacity: 1; transform: none; }

/* ---------- Hero ---------- */
.hero { padding-top: clamp(40px, 8vw, 90px); }
.hero-head { max-width: 980px; }
.hero-head .display { font-family: var(--sans); font-weight: 800; line-height: 0.94; font-size: var(--display); letter-spacing: -0.01em; margin-top: 14px; }
.hero-head .lead { margin-top: 24px; font-size: var(--body-lg); color: var(--ink-soft); max-width: 46ch; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 34px; }
.hero-media { margin-top: clamp(40px, 6vw, 64px); }

/* ---------- Secciones ---------- */
.section { padding-block: clamp(64px, 9vw, 132px); }
.section--line { border-top: 1px solid var(--line); }
.section-head { max-width: 720px; }
.section-head h2 { margin-top: 14px; }
.section-head .lead { margin-top: 18px; font-size: var(--body-lg); color: var(--ink-soft); max-width: 58ch; }

/* ---------- Manifiesto ---------- */
.manifest { max-width: 980px; }
.manifest p { font-family: var(--sans); font-weight: 500; font-size: clamp(24px, 3.4vw, 40px); line-height: 1.32; letter-spacing: -0.01em; }
.manifest em { font-style: normal; color: var(--gray); }

/* ---------- Proyectos destacados (editorial) ---------- */
.feature-list { display: flex; flex-direction: column; }
.feature {
  display: grid; grid-template-columns: 1fr; gap: 22px; padding-block: 40px;
  border-top: 1px solid var(--line);
}
.feature:last-child { border-bottom: 1px solid var(--line); }
.feature-media { order: -1; }
.feature-idx { font-family: "IBM Plex Mono", monospace; font-size: 13px; color: var(--gray-mute); }
.feature-name { font-size: clamp(28px, 5vw, 56px); margin-top: 8px; }
.feature-meta { margin-top: 10px; display: flex; gap: 14px; flex-wrap: wrap; font-size: 13px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--gray); }
.feature-desc { margin-top: 16px; color: var(--ink-soft); max-width: 52ch; }
.feature-more { margin-top: 20px; }
@media (min-width: 900px) {
  .feature { grid-template-columns: 1.1fr 0.9fr; align-items: center; gap: 56px; padding-block: 64px; }
  .feature:nth-child(even) .feature-media { order: 2; }
  .feature:nth-child(even) .feature-copy { order: 1; }
}

/* ---------- Tres bloques: Arquitectura / BIM / Construcción ---------- */
.trio { display: grid; grid-template-columns: 1fr; gap: 1px; background: var(--line); margin-top: 48px; }
.trio-item { background: var(--paper); padding: 40px clamp(20px, 3vw, 44px); }
.trio-item .trio-n { font-family: "IBM Plex Mono", monospace; font-size: 13px; color: var(--gray-mute); }
.trio-item h3 { margin-top: 16px; }
.trio-item p { margin-top: 14px; color: var(--ink-soft); }
@media (min-width: 900px) { .trio { grid-template-columns: repeat(3, 1fr); } }

/* ---------- Experiencia ---------- */
.exp-note { margin-top: 18px; color: var(--ink-soft); max-width: 62ch; font-size: var(--body-lg); }
.exp-grid { margin-top: 40px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.exp-item { background: var(--paper); padding: 22px 20px; font-family: var(--sans); font-weight: 700; font-size: clamp(16px, 2vw, 20px); display: flex; align-items: center; min-height: 84px; }
.exp-legal { margin-top: 22px; font-size: 13px; color: var(--gray); max-width: 62ch; }
@media (min-width: 640px) { .exp-grid { grid-template-columns: repeat(4, 1fr); } }

/* ---------- Riviera Maya ---------- */
.riv-cities { margin-top: 40px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); }
.riv-city { background: var(--paper); padding: 26px 22px; }
.riv-city .riv-n { font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--gray-mute); }
.riv-city h3 { margin-top: 10px; font-size: clamp(20px, 2.6vw, 28px); }
@media (min-width: 720px) { .riv-cities { grid-template-columns: repeat(4, 1fr); } }

/* ---------- Casa de Materiales resumen ---------- */
.mat-block { display: grid; grid-template-columns: 1fr; gap: 40px; align-items: center; }
.mat-copy .lead { margin-top: 18px; color: var(--ink-soft); font-size: var(--body-lg); max-width: 56ch; }
.mat-list { margin-top: 24px; display: flex; flex-direction: column; gap: 10px; }
.mat-list li { font-size: 14px; color: var(--ink-soft); padding-left: 18px; position: relative; }
.mat-list li::before { content: ""; position: absolute; left: 0; top: 9px; width: 8px; height: 1px; background: var(--ink); }
@media (min-width: 960px) { .mat-block { grid-template-columns: 1fr 1fr; gap: 72px; } }

/* ---------- CTA final ---------- */
.final-cta { background: var(--ink); color: var(--white); }
.final-cta .eyebrow { color: var(--gray-mute); }
.final-cta .eyebrow::before { color: var(--gray-mute); }
.final-cta h2 { font-size: clamp(34px, 5.4vw, 72px); margin-top: 16px; max-width: 16ch; }
.final-cta .lead { margin-top: 18px; color: #cfcdc6; font-size: var(--body-lg); max-width: 52ch; }
.final-cta .hero-cta { margin-top: 36px; }
.final-cta .btn--line { border-color: #4a4944; color: var(--white); }
.final-cta .btn--line:hover { background: var(--white); color: var(--ink); border-color: var(--white); }
.final-cta .btn--dark { background: var(--white); color: var(--ink); border-color: var(--white); }

/* ---------- Migas ---------- */
.crumbs { font-size: 12px; letter-spacing: 0.05em; text-transform: uppercase; color: var(--gray); display: flex; gap: 8px; padding-top: 24px; }
.crumbs a { color: var(--gray); }
.crumbs a:hover { color: var(--ink); }

/* ---------- Índice de proyectos ---------- */
.proj-index { display: flex; flex-direction: column; }
.proj-row { display: grid; grid-template-columns: 1fr; gap: 18px; padding-block: 28px; border-top: 1px solid var(--line); }
.proj-row:last-child { border-bottom: 1px solid var(--line); }
.proj-row a { display: contents; }
.proj-row-inner { display: grid; grid-template-columns: 1fr; gap: 18px; width: 100%; }
.proj-thumb { grid-row: 1; }
.proj-info { display: flex; flex-direction: column; justify-content: center; }
.proj-idx { font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--gray-mute); }
.proj-title { font-size: clamp(24px, 3.4vw, 34px); margin-top: 8px; transition: opacity 0.15s ease; }
.proj-row:hover .proj-title { opacity: 0.6; }
.proj-meta { margin-top: 10px; font-size: 13px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--gray); display: flex; flex-wrap: wrap; gap: 12px; }
@media (min-width: 860px) { .proj-row-inner { grid-template-columns: 260px 1fr; align-items: center; gap: 40px; } }

/* ---------- Ficha de proyecto ---------- */
.proj-hero { padding-top: 28px; }
.proj-hero-head { max-width: 900px; margin-top: 24px; }
.proj-hero-head h1 { font-size: clamp(40px, 7vw, 92px); line-height: 0.98; }
.proj-facts { margin-top: 28px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px 24px; max-width: 640px; }
.proj-fact dt { font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--gray); }
.proj-fact dd { margin: 6px 0 0; font-family: var(--sans); font-weight: 700; font-size: 16px; }
.proj-lead { margin-top: 32px; font-size: var(--body-lg); color: var(--ink-soft); max-width: 62ch; }
.proj-gallery { margin-top: clamp(40px, 6vw, 70px); display: grid; grid-template-columns: 1fr; gap: var(--gutter); }
.proj-gallery .ph:nth-child(3n+1) { grid-column: 1 / -1; }
@media (min-width: 860px) { .proj-gallery { grid-template-columns: repeat(2, 1fr); } }
.proj-nav { display: flex; justify-content: space-between; padding-block: 40px; border-top: 1px solid var(--line); margin-top: 40px; gap: 20px; flex-wrap: wrap; }

.proj-video { position: relative; width: 100%; aspect-ratio: 16 / 9; background: var(--ink); overflow: hidden; }
.proj-video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; }

/* ---------- Formulario de contacto ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr; gap: 56px; }
.contact-info .lead { margin-top: 18px; color: var(--ink-soft); font-size: var(--body-lg); max-width: 46ch; }
.contact-list { margin-top: 36px; display: flex; flex-direction: column; gap: 20px; }
.contact-list dt { font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--gray); }
.contact-list dd { margin: 6px 0 0; font-family: var(--sans); font-weight: 700; font-size: 18px; }
.field { margin-bottom: 22px; }
.field label { display: block; font-size: 12px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 8px; }
.field input, .field select, .field textarea {
  width: 100%; border: none; border-bottom: 1px solid var(--line); background: transparent;
  padding: 10px 2px; font: inherit; font-size: 16px; color: var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--ink); }
.field-row { display: grid; grid-template-columns: 1fr; gap: 0 22px; }
.field textarea { resize: vertical; min-height: 96px; }
.form-note { margin-top: 4px; font-size: 13px; color: var(--gray); }
@media (min-width: 640px) { .field-row { grid-template-columns: 1fr 1fr; } .field-row .field { min-width: 0; } }

/* ---------- WhatsApp flotante ---------- */
.wa-float {
  position: fixed; right: 18px; bottom: 18px; z-index: 80; width: 48px; height: 48px;
  border-radius: 50%; background: var(--ink); color: var(--white); display: flex; align-items: center;
  justify-content: center; box-shadow: 0 6px 18px rgba(0,0,0,0.22);
}
.wa-float svg { width: 22px; height: 22px; }

/* ---------- Pie ---------- */
.site-footer { border-top: 1px solid var(--line); padding-block: clamp(48px, 6vw, 80px); margin-top: clamp(60px, 8vw, 120px); }
.foot-grid { display: grid; grid-template-columns: 1fr; gap: 40px; }
.foot-word { display: inline-block; }
.foot-word img { width: 190px; height: auto; }
.foot-brand p { margin-top: 14px; color: var(--ink-soft); max-width: 34ch; font-size: 14px; }
.foot-eco { margin-top: 20px; font-size: 13px; }
.foot-eco a { border-bottom: 1px solid var(--line); }
.foot-eco a:hover { border-color: var(--ink); }
.site-footer h4 { font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gray); }
.foot-links { margin-top: 14px; display: flex; flex-direction: column; gap: 10px; }
.foot-links a:hover { color: var(--gray); }
.foot-bottom { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; font-size: 12px; color: var(--gray); }
@media (min-width: 900px) { .foot-grid { grid-template-columns: 1.4fr repeat(3, 1fr); } }

/* ---------- BIM: beneficios ---------- */
.bim-benefits { margin-top: 40px; display: flex; flex-direction: column; }
.bim-benefit { display: grid; grid-template-columns: 1fr; gap: 6px; padding-block: 22px; border-top: 1px solid var(--line); }
.bim-benefit:last-child { border-bottom: 1px solid var(--line); }
.bim-benefit .bb-n { font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--gray-mute); }
.bim-benefit p { color: var(--ink-soft); font-size: var(--body-lg); }
@media (min-width: 760px) { .bim-benefit { grid-template-columns: 60px 1fr; align-items: baseline; gap: 20px; } }

/* ---------- BIM: glosario ---------- */
.glossary { margin-top: 40px; display: flex; flex-direction: column; }
.gloss-row { display: grid; grid-template-columns: 1fr; gap: 8px; padding-block: 24px; border-top: 1px solid var(--line); }
.gloss-row:last-child { border-bottom: 1px solid var(--line); }
.gloss-term { font-family: var(--sans); font-weight: 700; font-size: 17px; }
.gloss-def { color: var(--ink-soft); }
@media (min-width: 760px) { .gloss-row { grid-template-columns: 220px 1fr; gap: 32px; } }

/* ---------- BIM: diagrama CDE ---------- */
.cde { margin-top: 48px; }
.cde-cap { margin-top: 16px; font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--gray); text-align: center; }

/* ---------- Servicios ---------- */
.svc-grid { margin-top: 40px; display: grid; grid-template-columns: 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.svc-card { background: var(--paper); padding: 30px 26px; }
.svc-card .svc-n { font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--gray-mute); }
.svc-card h3 { margin-top: 14px; font-size: clamp(18px, 2vw, 21px); }
.svc-card p { margin-top: 10px; color: var(--ink-soft); font-size: 14px; }
@media (min-width: 640px) { .svc-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1020px) { .svc-grid { grid-template-columns: repeat(3, 1fr); } }

/* ---------- 404 ---------- */
.nf { padding-block: clamp(80px, 14vw, 160px); text-align: left; }
.nf h1 { font-size: clamp(40px, 8vw, 96px); }