/* =====================================================
   Daniel Della Riva — Stylesheet
   Palette:
     --navy:  #133055
     --steel: #839599
     --off:   #F5F6F7
     --white: #FFFFFF
   Approach: mobile-first, fluid type, sober executive tone.
   ===================================================== */

:root {
  --navy: #133055;
  --navy-dark: #0d233f;
  --navy-90: rgba(19, 48, 85, 0.92);
  --navy-70: rgba(19, 48, 85, 0.7);
  --steel: #839599;
  --steel-30: rgba(131, 149, 153, 0.3);
  --off: #F5F6F7;
  --white: #FFFFFF;
  --ink: #16202E;
  --ink-soft: #4A5666;
  --line: #E2E5E8;

  --radius-s: 4px;
  --radius-m: 10px;
  --radius-l: 18px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);

  --container: 1180px;
  --header-h: 76px;

  --font-sans: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  --font-serif: 'Fraunces', Georgia, 'Times New Roman', serif;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
ul, ol { list-style: none; padding: 0; margin: 0; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: inherit;
  color: var(--navy);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 .5em;
}
h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.6rem, 6vw + 1rem, 5.2rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.02;
}
h2 { font-size: clamp(1.75rem, 2.2vw + 1rem, 2.6rem); }
h3 { font-size: 1.15rem; }
h4 { font-size: .9rem; text-transform: uppercase; letter-spacing: .14em; }
p  { margin: 0 0 1rem; }

.eyebrow,
.section-eyebrow {
  display: inline-block;
  font-size: .76rem;
  letter-spacing: .3em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--steel);
  margin-bottom: 1rem;
}
.section-eyebrow.light { color: var(--steel); }

.accent { color: var(--steel); }
.accent-serif {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--steel);
}

.lead {
  font-size: 1.08rem;
  color: var(--ink-soft);
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: clamp(64px, 8vw, 120px) 0; }

.section-header {
  max-width: 720px;
  margin: 0 0 56px;
}
.section-header.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-header.light h2,
.section-header.light .section-eyebrow { color: var(--white); }
.section-lead { color: var(--ink-soft); font-size: 1.05rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 500;
  letter-spacing: .03em;
  font-size: .92rem;
  transition: transform .25s var(--ease), background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--navy);
  color: var(--white);
}
.btn-primary:hover { background: var(--navy-dark); transform: translateY(-2px); }

.btn-primary-light {
  background: var(--white);
  color: var(--navy);
}
.btn-primary-light:hover { background: var(--off); transform: translateY(-2px); }

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.55);
}
.btn-outline:hover { background: var(--white); color: var(--navy); border-color: var(--white); }

.btn-ghost {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}
.btn-ghost:hover { background: var(--navy); color: var(--white); }

.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 50;
  background: transparent;
  transition: background .3s var(--ease), box-shadow .3s var(--ease);
}
.site-header.scrolled {
  background: var(--navy);
  box-shadow: 0 8px 32px rgba(0,0,0,.18);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--white);
  font-weight: 600;
}
.logo-mark {
  width: 38px; height: 38px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--white);
  color: var(--navy);
  border-radius: var(--radius-s);
  font-weight: 700;
  font-size: .72rem;
  letter-spacing: .08em;
}
.logo-text {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.05rem;
  letter-spacing: .01em;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 36px;
}
.primary-nav ul {
  display: flex;
  gap: 28px;
}
.primary-nav a {
  color: var(--white);
  font-size: .92rem;
  letter-spacing: .03em;
  opacity: .85;
  transition: opacity .2s ease;
}
.primary-nav a:hover { opacity: 1; }

.btn-cta { padding: 10px 22px; }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  flex-direction: column;
  align-items: center; justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  width: 22px; height: 2px; background: var(--white);
  transition: transform .3s var(--ease), opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  color: var(--white);
  background: var(--navy);
  overflow: hidden;
  padding-top: var(--header-h);
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(131,149,153,.22), transparent 55%),
    radial-gradient(ellipse at 80% 80%, rgba(131,149,153,.16), transparent 60%),
    linear-gradient(180deg, #0e2545 0%, #133055 60%, #0e2545 100%);
}
.hero-bg::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, #000 50%, transparent 80%);
  opacity: .3;
}
.hero-inner {
  position: relative;
  z-index: 1;
  padding: 60px 24px 120px;
  max-width: 920px;
}
.hero h1 { color: var(--white); margin-bottom: 1.2rem; }
.hero-sub {
  font-size: clamp(1.05rem, .6vw + .9rem, 1.3rem);
  color: rgba(255,255,255,.8);
  max-width: 640px;
  margin: 0 0 2.2rem;
  line-height: 1.5;
}
.hero .eyebrow { color: var(--steel); }
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-scroll {
  position: absolute;
  bottom: 28px; left: 50%;
  transform: translateX(-50%);
  width: 26px; height: 44px;
  border: 1px solid rgba(255,255,255,.5);
  border-radius: 14px;
  z-index: 1;
}
.hero-scroll span {
  position: absolute;
  top: 8px; left: 50%;
  transform: translateX(-50%);
  width: 3px; height: 7px; border-radius: 2px;
  background: #fff;
  animation: scrollHint 1.8s var(--ease) infinite;
}
@keyframes scrollHint {
  0%   { opacity: 0; transform: translate(-50%, 0); }
  35%  { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, 14px); }
}

/* ---------- Who / Bio ---------- */
.who { background: var(--white); }
.who-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}
.who-photo img {
  width: 100%;
  border-radius: var(--radius-l);
  aspect-ratio: 4/5;
  object-fit: cover;
}
.who-copy h2 { margin-bottom: 1.2rem; }
.who-copy p { color: var(--ink-soft); }
.who-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- Vitrium block ---------- */
.vitrium {
  background: var(--navy);
  color: var(--white);
  position: relative;
}
.vitrium h2 { color: var(--white); font-family: var(--font-serif); font-weight: 500; }
.vitrium .lead { color: rgba(255,255,255,.78); }
.vitrium p { color: rgba(255,255,255,.7); }
.vitrium strong { color: var(--white); font-weight: 500; }

.vitrium-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: start;
}

.vitrium-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  padding: 28px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-l);
}
.v-stat {
  display: flex;
  flex-direction: column;
  padding: 14px 4px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.v-stat:last-child { border-bottom: 0; }
.v-num {
  font-family: var(--font-serif);
  font-size: 2.6rem;
  font-weight: 500;
  color: var(--white);
  line-height: 1;
  margin-bottom: 6px;
}
.v-lbl {
  font-size: .9rem;
  color: rgba(255,255,255,.7);
  letter-spacing: .02em;
}

/* ---------- KPIs ---------- */
.kpis { background: var(--off); }
.kpi-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}
.kpi-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.kpi-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(19,48,85,.1);
}
.kpi-card.kpi-featured {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--white);
}
.kpi-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.kpi-year {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--navy);
}
.kpi-card.kpi-featured .kpi-year { color: var(--white); }
.kpi-tag {
  font-size: .7rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--steel);
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
}
.kpi-card.kpi-featured .kpi-tag {
  color: rgba(255,255,255,.85);
  border-color: rgba(255,255,255,.25);
}
.kpi-body { padding: 6px 0; }
.kpi-figure {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 4vw + 1rem, 3.6rem);
  color: var(--navy);
  font-weight: 500;
  line-height: 1;
  margin: 0 0 6px;
}
.kpi-card.kpi-featured .kpi-figure { color: var(--white); }
.kpi-sub {
  font-size: .9rem;
  color: var(--ink-soft);
  margin: 0;
}
.kpi-card.kpi-featured .kpi-sub { color: rgba(255,255,255,.75); }
.kpi-foot {
  display: flex;
  justify-content: flex-end;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: .88rem;
  color: var(--ink-soft);
}
.kpi-card.kpi-featured .kpi-foot {
  border-top-color: rgba(255,255,255,.15);
  color: rgba(255,255,255,.8);
}
.kpi-source {
  margin-top: 24px;
  font-size: .85rem;
  color: var(--ink-soft);
  letter-spacing: .04em;
}

/* ---------- Track / Timeline ---------- */
.track { background: var(--white); }
.timeline {
  position: relative;
  padding-left: 8px;
}
.timeline::before {
  content: "";
  position: absolute;
  top: 4px; bottom: 4px;
  left: 8px;
  width: 1px;
  background: var(--line);
}
.t-item {
  position: relative;
  padding: 0 0 28px 36px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
}
.t-item::before {
  content: "";
  position: absolute;
  left: 2px; top: 8px;
  width: 13px; height: 13px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--navy);
}
.t-year {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--steel);
}
.t-body h3 {
  font-size: 1.15rem;
  margin: 2px 0 6px;
}
.t-body p {
  color: var(--ink-soft);
  margin: 0;
}

/* ---------- Testimonios ---------- */
.testi-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.testi {
  background: var(--off);
  border-radius: var(--radius-l);
  padding: 28px;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.testi blockquote {
  margin: 0;
  position: relative;
  padding-left: 0;
}
.testi blockquote::before {
  content: "“";
  font-family: var(--font-serif);
  font-size: 3.5rem;
  line-height: .8;
  color: var(--steel);
  display: block;
  margin-bottom: 6px;
}
.testi blockquote p {
  font-size: 1.02rem;
  color: var(--ink);
  margin: 0;
  font-style: italic;
}
.testi figcaption {
  display: flex;
  flex-direction: column;
}
.testi figcaption strong {
  color: var(--navy);
  font-weight: 600;
}
.testi figcaption span {
  font-size: .85rem;
  color: var(--ink-soft);
  letter-spacing: .04em;
}

/* ---------- Projects + Tabs ---------- */
.projects { background: var(--off); }
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 6px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  margin: 0 0 40px;
  width: max-content;
  max-width: 100%;
}
.tab {
  padding: 10px 20px;
  border-radius: 999px;
  font-size: .9rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: background .25s var(--ease), color .25s var(--ease);
  white-space: nowrap;
}
.tab:hover { color: var(--navy); }
.tab.active {
  background: var(--navy);
  color: var(--white);
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.tab-panel[hidden] { display: none !important; }

.country-copy {
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 780px;
  margin: 0 0 32px;
}

.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.project-card {
  background: var(--white);
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(19, 48, 85, .06);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(19, 48, 85, .14);
}
/* Project image: navy/steel placeholder.
   Drop an <img> inside .project-img and it will cover the placeholder automatically. */
.project-img {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  background:
    linear-gradient(135deg, var(--navy) 0%, #1a3f6e 55%, #244a7a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}
.project-img::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 18% 18%, rgba(131,149,153,.28), transparent 55%),
    radial-gradient(circle at 82% 82%, rgba(131,149,153,.18), transparent 60%);
  pointer-events: none;
}
.project-img::after {
  /* Faint grid for texture */
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
  opacity: .5;
  pointer-events: none;
}
/* Alternate accent: cards en posición par usan más steel */
.project-card:nth-child(2n) .project-img {
  background: linear-gradient(135deg, #6e8084 0%, var(--steel) 60%, #4f6266 100%);
}
.project-card:nth-child(2n) .project-img::before {
  background:
    radial-gradient(circle at 18% 18%, rgba(19,48,85,.35), transparent 55%),
    radial-gradient(circle at 82% 82%, rgba(19,48,85,.22), transparent 60%);
}
.project-img__name {
  position: relative;
  z-index: 1;
  color: var(--white);
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(1.2rem, 1.4vw + .8rem, 1.7rem);
  letter-spacing: -.01em;
  text-align: center;
  padding: 0 20px;
  line-height: 1.15;
  text-shadow: 0 2px 12px rgba(0,0,0,.25);
}
/* When a real <img> is added inside, it covers the placeholder. */
.project-img img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 2;
}
/* Card con portada (cover.jpg): overlay navy semitransparente + nombre encima */
.project-img__overlay {
  position: absolute;
  inset: 0;
  z-index: 3;
  background: linear-gradient(180deg, rgba(19,48,85,.28) 0%, rgba(19,48,85,.62) 100%);
  pointer-events: none;
}
.project-img.has-cover .project-img__name { z-index: 4; }
.project-card:hover .project-img.has-cover img { transform: scale(1.05); }
.project-img.has-cover img { transition: transform .5s var(--ease); }

.project-meta {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.project-country {
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--steel);
}
.project-meta h3 {
  margin: 6px 0 4px;
  font-size: 1.2rem;
}
.project-size {
  font-size: .9rem;
  color: var(--ink-soft);
  margin-bottom: 14px;
}
.project-link {
  align-self: flex-start;
  font-size: .78rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--navy);
  padding: 8px 14px;
  border: 1px solid var(--navy);
  border-radius: 999px;
  transition: background .25s var(--ease), color .25s var(--ease), transform .25s var(--ease);
}
.project-link:hover {
  background: var(--navy);
  color: var(--white);
  transform: translateY(-1px);
}

/* ---------- Contact ---------- */
.contact { background: var(--white); }
.contact-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}
.contact-copy h2 { margin-bottom: 1rem; }
.contact-copy p  { color: var(--ink-soft); max-width: 460px; }
.contact-copy strong { color: var(--navy); font-weight: 600; }

.contact-form {
  background: var(--off);
  border-radius: var(--radius-l);
  padding: 32px;
  display: grid;
  gap: 18px;
}
.field { display: flex; flex-direction: column; }
.field label,
.field legend {
  font-size: .8rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 8px;
  font-weight: 500;
}
.field input,
.field select {
  padding: 14px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--white);
  font: inherit;
  color: var(--ink);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.field input:focus,
.field select:focus {
  outline: none;
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(19,48,85,.12);
}
.field input.invalid,
.field select.invalid {
  border-color: #C0392B;
  box-shadow: 0 0 0 3px rgba(192,57,43,.10);
}
.error {
  color: #C0392B;
  font-size: .82rem;
  margin-top: 6px;
  min-height: 1em;
}
.field-radio { border: 0; padding: 0; margin: 0; }
.field-radio legend { padding: 0; }
.radio {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-right: 18px;
  margin-top: 4px;
  cursor: pointer;
}
.radio input { accent-color: var(--navy); }

.form-status { margin: 6px 0 0; font-size: .92rem; }
.form-status.success { color: #1F7A4A; }
.form-status.error   { color: #C0392B; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy);
  color: rgba(255,255,255,.82);
  padding: 64px 0 24px;
}
.site-footer a { color: var(--white); }
.site-footer a:hover { color: var(--steel); }

.footer-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand p {
  margin-top: 16px;
  max-width: 360px;
  color: rgba(255,255,255,.65);
  font-size: .95rem;
}
.footer-brand .logo-mark { background: var(--white); color: var(--navy); }
.footer-brand .logo-text { color: var(--white); }
.footer-brand .logo-mark,
.footer-brand .logo-text { display: inline-block; vertical-align: middle; }
.footer-brand .logo-mark { margin-right: 10px; }

.footer-links h4,
.footer-contact h4 {
  color: var(--white);
  margin-bottom: 14px;
}
.footer-links ul li { margin-bottom: 8px; font-size: .94rem; }
.footer-links ul li a { color: rgba(255,255,255,.75); }
.footer-links ul li a:hover { color: var(--white); }

.footer-contact p { font-size: .94rem; margin-bottom: 6px; color: rgba(255,255,255,.75); }
.footer-contact a { color: var(--white); }

.socials {
  display: flex; gap: 12px;
  margin-top: 18px;
}
.socials a {
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 50%;
  transition: background .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease);
  color: rgba(255,255,255,.85);
}
.socials a:hover {
  background: var(--white);
  color: var(--navy);
  border-color: var(--white);
  transform: translateY(-2px);
}
/* Red social sin URL todavía: [hidden] debe ganarle a display:inline-flex */
.socials a[hidden] { display: none !important; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 24px;
  font-size: .82rem;
  color: rgba(255,255,255,.55);
}
.disclaimer { max-width: 640px; }

/* ---------- Honeypot anti-spam (oculto) ---------- */
.w3-hp { display: none !important; }

/* ---------- Hint "(opcional)" en labels ---------- */
.field label .opt {
  color: var(--steel);
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}

/* ---------- Contacto: textarea del formulario ---------- */
.field textarea {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--white);
  font: inherit;
  color: var(--ink);
  resize: vertical;
  min-height: 110px;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.field textarea:focus {
  outline: none;
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(19,48,85,.12);
}
.field textarea.invalid { border-color: #C0392B; box-shadow: 0 0 0 3px rgba(192,57,43,.10); }

/* ---------- Contacto: opciones directas (íconos, sin email visible) ---------- */
.contact-options {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 24px;
  max-width: 460px;
}
.contact-opt {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  text-align: left;
  padding: 16px 18px;
  background: var(--off);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  transition: border-color .25s var(--ease), background .25s var(--ease), transform .25s var(--ease);
}
.contact-opt:hover {
  border-color: var(--navy);
  background: var(--white);
  transform: translateY(-1px);
}
.contact-opt-ico {
  flex: 0 0 auto;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  display: inline-flex;
  align-items: center; justify-content: center;
  transition: background .25s var(--ease);
}
.contact-opt:hover .contact-opt-ico { background: var(--navy-dark); }
.contact-opt-label {
  font-size: .98rem;
  font-weight: 500;
  color: var(--navy);
  line-height: 1.3;
}

/* ---------- Footer: opción de Email (ícono + texto, sin dirección) ---------- */
.footer-email-opt {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  padding: 0;
  color: rgba(255,255,255,.85);
  font: inherit;
  font-size: .94rem;
  cursor: pointer;
  transition: color .2s ease;
}
.footer-email-opt:hover { color: var(--white); }
.footer-email-ico {
  flex: 0 0 auto;
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.2);
  display: inline-flex;
  align-items: center; justify-content: center;
  color: rgba(255,255,255,.85);
  transition: background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}
.footer-email-opt:hover .footer-email-ico {
  background: var(--white);
  color: var(--navy);
  border-color: var(--white);
}

/* ---------- Footer: formulario compacto (Web3Forms) ---------- */
.footer-form-wrap {
  padding: 8px 0 32px;
  margin-bottom: 8px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-form-head h4 { color: var(--white); margin-bottom: 4px; }
.footer-form-head p { color: rgba(255,255,255,.6); font-size: .9rem; margin: 0 0 16px; }
.footer-form-body {
  display: grid;
  gap: 10px;
}
.footer-form-fields {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
.footer-form input,
.footer-form textarea {
  padding: 12px 14px;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius-m);
  background: rgba(255,255,255,.06);
  color: var(--white);
  font: inherit;
  font-size: .95rem;
  transition: border-color .2s ease, background .2s ease;
}
.footer-form textarea { resize: vertical; min-height: 46px; }
.footer-form input::placeholder,
.footer-form textarea::placeholder { color: rgba(255,255,255,.5); }
.footer-form input:focus,
.footer-form textarea:focus {
  outline: none;
  border-color: var(--white);
  background: rgba(255,255,255,.1);
}
.footer-form input.invalid { border-color: #ff8d7a; background: rgba(255,141,122,.08); }
.footer-form .btn { justify-self: start; }
.footer-form .form-status { margin: 4px 0 0; font-size: .9rem; color: rgba(255,255,255,.75); }
.footer-form .form-status.success { color: #6ee7a8; }
.footer-form .form-status.error   { color: #ff8d7a; }

@media (min-width: 520px) {
  .contact-options { grid-template-columns: 1fr; }
  .footer-form-fields { grid-template-columns: 1fr 1fr 1fr; }
}
@media (min-width: 760px) {
  .footer-form {
    display: grid;
    grid-template-columns: minmax(180px, 240px) 1fr;
    column-gap: 40px;
    align-items: start;
  }
  .footer-form-head { margin: 0; }
  .footer-form-head p { margin-bottom: 0; }
}

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-scroll span { animation: none; }
  html { scroll-behavior: auto; }
}

/* =====================================================
   Breakpoints
   ===================================================== */

/* >= 640px */
@media (min-width: 640px) {
  .project-grid    { grid-template-columns: repeat(2, 1fr); }
  .kpi-grid        { grid-template-columns: repeat(3, 1fr); }
  .testi-grid      { grid-template-columns: repeat(2, 1fr); }
  .vitrium-stats   { grid-template-columns: repeat(3, 1fr); padding: 32px; }
  .v-stat          { border-bottom: 0; border-right: 1px solid rgba(255,255,255,.08); padding: 4px 18px; }
  .v-stat:last-child { border-right: 0; }
}

/* >= 880px */
@media (min-width: 880px) {
  .who-inner {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 64px;
  }
  .vitrium-inner {
    grid-template-columns: 1.1fr 1fr;
    gap: 64px;
  }
  .testi-grid    { grid-template-columns: repeat(3, 1fr); }
  .contact-inner { grid-template-columns: 1fr 1.05fr; gap: 64px; align-items: start; }
  .footer-top    { grid-template-columns: 1.4fr 1fr 1.1fr; align-items: start; }
}

/* >= 1024px */
@media (min-width: 1024px) {
  .project-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- Mobile nav ---------- */
@media (max-width: 879px) {
  .nav-toggle { display: inline-flex; }
  .primary-nav {
    position: fixed;
    top: var(--header-h);
    right: 0; left: 0;
    background: var(--navy);
    flex-direction: column;
    align-items: stretch;
    padding: 24px;
    gap: 18px;
    transform: translateY(-120%);
    transition: transform .35s var(--ease);
    box-shadow: 0 12px 30px rgba(0,0,0,.25);
  }
  .primary-nav ul {
    flex-direction: column;
    gap: 4px;
  }
  .primary-nav ul a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,.08);
  }
  .primary-nav.open { transform: translateY(0); }
  .btn-cta { align-self: flex-start; }
  .site-header { background: var(--navy); }
  .logo-text { font-size: .98rem; }
}

/* =====================================================
   CHAT WIDGET — Máximo
   ===================================================== */

.chat-widget {
  font-family: var(--font-sans);
}

/* Bubble */
.chat-bubble {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 12px 30px rgba(19, 48, 85, .35), 0 4px 10px rgba(0,0,0,.18);
  z-index: 80;
  transition: transform .25s var(--ease), background .25s var(--ease);
}
.chat-bubble:hover {
  background: var(--navy-dark);
  transform: translateY(-2px) scale(1.04);
}
.chat-bubble-ico { display: block; transition: transform .25s var(--ease), opacity .2s var(--ease); }
.chat-bubble-ico--close {
  position: absolute;
  opacity: 0;
  transform: scale(.4) rotate(-45deg);
}
.chat-bubble.open .chat-bubble-ico--chat {
  opacity: 0;
  transform: scale(.4) rotate(45deg);
}
.chat-bubble.open .chat-bubble-ico--close {
  opacity: 1;
  transform: scale(1) rotate(0);
}
.chat-bubble-dot {
  position: absolute;
  top: 8px; right: 10px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--steel);
  border: 2px solid var(--navy);
}
.chat-bubble.open .chat-bubble-dot { display: none; }

/* Panel — flex column: header (top) + mensajes (flex:1) + form (bottom) */
.chat-panel {
  position: fixed;
  right: 22px;
  bottom: 96px;
  top: auto;                       /* defensivo: por si algún reset pone top:0 */
  left: auto;
  width: 380px;
  max-width: calc(100vw - 32px);
  height: 600px;
  max-height: calc(100vh - 120px);
  margin: 0;
  padding: 0;                      /* sin padding: el header debe tocar el borde superior */
  background: var(--white);
  border-radius: 18px;
  box-shadow: 0 24px 60px rgba(19, 48, 85, .25), 0 8px 24px rgba(0,0,0,.12);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  overflow: hidden;
  z-index: 79;
  opacity: 0;
  transform: translateY(12px) scale(.98);
  transform-origin: bottom right;
  transition: opacity .28s var(--ease), transform .28s var(--ease);
  /* Evita que algún whitespace text node herede pre-wrap y genere flex items fantasma */
  white-space: normal;
  font-size: 16px;
  line-height: 1;
}
/* Igual que el lightbox: el atributo [hidden] debe ganarle a display:flex
   para que el panel cerrado no intercepte clicks en su zona. */
.chat-panel[hidden] { display: none; }
.chat-panel.open {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Header — pegado arriba, sin margen, esquinas superiores redondeadas como red de seguridad */
.chat-header {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  padding: 14px 16px;
  background: var(--navy);
  color: var(--white);
  border-radius: 18px 18px 0 0;    /* matchea border-radius del panel arriba */
  line-height: 1.2;
}
.chat-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--white);
  color: var(--navy);
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.15rem;
  flex: 0 0 auto;
}
.chat-titles {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  flex: 1;
  min-width: 0;
}
.chat-titles strong {
  font-size: .98rem;
  font-weight: 600;
  letter-spacing: .01em;
}
.chat-titles span {
  font-size: .78rem;
  color: rgba(255,255,255,.7);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.chat-status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #4CD964;
  box-shadow: 0 0 0 2px rgba(76, 217, 100, .25);
}
.chat-close {
  width: 34px; height: 34px;
  border-radius: 50%;
  color: var(--white);
  display: inline-flex;
  align-items: center; justify-content: center;
  transition: background .2s var(--ease);
}
.chat-close:hover { background: rgba(255,255,255,.12); }

/* Messages — ocupa todo el alto entre header y form */
.chat-messages {
  flex: 1 1 0;
  min-height: 0;             /* clave: permite que overflow-y funcione dentro de flex */
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  margin: 0;
  padding: 18px 16px;
  background: var(--off);
  display: flex;
  flex-direction: column;
  gap: 12px;
  scrollbar-width: thin;
  scrollbar-color: var(--steel) transparent;
}
.chat-messages::-webkit-scrollbar { width: 6px; }
.chat-messages::-webkit-scrollbar-thumb {
  background: var(--steel);
  border-radius: 3px;
}

.chat-msg {
  display: flex;
  max-width: 86%;
  animation: chatIn .25s var(--ease);
}
@keyframes chatIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}
.chat-msg--bot  { align-self: flex-start; }
.chat-msg--user { align-self: flex-end; }

.chat-bubble-msg {
  padding: 14px 18px;
  border-radius: 18px;
  font-size: .95rem;
  line-height: 1.55;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}
.chat-msg--bot .chat-bubble-msg {
  background: var(--white);
  color: var(--ink);
  border: 1px solid var(--line);
  border-bottom-left-radius: 6px;
}
.chat-msg--user .chat-bubble-msg {
  background: var(--navy);
  color: var(--white);
  border-bottom-right-radius: 6px;
}

/* Markdown dentro de la burbuja */
.chat-bubble-msg p {
  margin: 0;
}
.chat-bubble-msg p + p {
  margin-top: .65em;
}
.chat-bubble-msg strong { font-weight: 600; }
.chat-bubble-msg em     { font-style: italic; }
.chat-bubble-msg ul {
  margin: .4em 0 0;
  padding: 0;
  list-style: none;
}
.chat-bubble-msg ul li {
  position: relative;
  padding: 2px 0 2px 18px;
  line-height: 1.5;
}
.chat-bubble-msg ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: .72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--steel);
}
.chat-msg--user .chat-bubble-msg ul li::before {
  background: rgba(255,255,255,.65);
}
.chat-bubble-msg p + ul {
  margin-top: .6em;
}
.chat-bubble-msg ul + p {
  margin-top: .65em;
}

/* Typing indicator */
.chat-bubble-msg--typing {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 14px 16px;
}
.chat-bubble-msg--typing p { display: none; }
.chat-bubble-msg--typing span {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--steel);
  animation: chatDots 1.2s infinite var(--ease);
}
.chat-bubble-msg--typing span:nth-child(2) { animation-delay: .15s; }
.chat-bubble-msg--typing span:nth-child(3) { animation-delay: .3s; }
@keyframes chatDots {
  0%, 60%, 100% { opacity: .35; transform: translateY(0); }
  30%           { opacity: 1;   transform: translateY(-3px); }
}

/* Form — pegado abajo, respeta safe-area en mobile (notch + barra inferior) */
.chat-form {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 12px;
  padding-bottom: calc(12px + env(safe-area-inset-bottom, 0px));
  background: var(--white);
  border-top: 1px solid var(--line);
}
.chat-input {
  flex: 1;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font: inherit;
  font-size: .95rem;
  color: var(--ink);
  background: var(--off);
  transition: border-color .2s ease, background .2s ease;
}
.chat-input:focus {
  outline: none;
  border-color: var(--navy);
  background: var(--white);
}
.chat-input:disabled { opacity: .6; }

.chat-send {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  display: inline-flex;
  align-items: center; justify-content: center;
  transition: background .2s var(--ease), transform .2s var(--ease);
  flex: 0 0 auto;
}
.chat-send:hover { background: var(--navy-dark); transform: translateY(-1px); }
.chat-send:active { transform: translateY(0); }

/* Mobile: panel ocupa toda la pantalla (con dvh para que el teclado no tape el input) */
@media (max-width: 560px) {
  .chat-panel {
    inset: 0;
    right: 0; left: 0; top: 0; bottom: 0;
    width: 100%;
    max-width: 100%;
    height: 100vh;
    height: 100dvh;          /* dynamic viewport: se achica cuando aparece el teclado */
    max-height: 100dvh;
    border-radius: 0;
  }
  .chat-header {
    padding-top: calc(14px + env(safe-area-inset-top, 0px));
  }
  .chat-messages {
    padding: 16px 14px;
  }
  .chat-bubble-msg {
    font-size: 1rem;          /* texto más cómodo de leer en mobile */
  }
  .chat-bubble {
    right: 16px;
    bottom: 16px;
    width: 56px;
    height: 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .chat-panel, .chat-msg, .chat-bubble, .chat-bubble-ico { transition: none; animation: none; }
  .chat-bubble-msg--typing span { animation: none; opacity: .6; }
}

/* =====================================================
   PÁGINA DE PROYECTO (proyectos/<slug>.html)
   Reutiliza los tokens de :root (navy, steel, off, etc.)
   ===================================================== */

/* Contenedor ancho para la galería full-bleed */
.container-wide {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
}

.proj-section { padding: clamp(56px, 7vw, 104px) 0; }
.proj-section .section-header { margin-bottom: 40px; }

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  position: relative;
  z-index: 1;
  padding-top: 12px;
}
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: .8rem;
  letter-spacing: .04em;
}
.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.6);
}
.breadcrumb li + li::before {
  content: "›";
  color: rgba(255,255,255,.4);
}
.breadcrumb a { color: rgba(255,255,255,.78); transition: color .2s ease; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb li[aria-current="page"] { color: var(--steel); }

/* ---------- Hero del proyecto ---------- */
.proj-hero {
  position: relative;
  background: var(--navy);
  color: var(--white);
  overflow: hidden;
  padding: calc(var(--header-h) + 28px) 0 clamp(48px, 7vw, 88px);
}
.proj-hero .hero-bg { position: absolute; inset: 0; }
.proj-hero > .container { position: relative; z-index: 1; }

.proj-hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
  margin-top: 28px;
}
.proj-hero-copy .eyebrow { color: var(--steel); }
.proj-hero-copy h1 {
  color: var(--white);
  font-size: clamp(2.4rem, 5vw + 1rem, 4.2rem);
  margin-bottom: 1rem;
}
.proj-badge {
  display: inline-block;
  font-size: .8rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--white);
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.28);
  padding: 8px 16px;
  border-radius: 999px;
  margin-bottom: 1.4rem;
}
.proj-short {
  font-size: 1.12rem;
  line-height: 1.55;
  color: rgba(255,255,255,.82);
  max-width: 560px;
  margin-bottom: 1.8rem;
}
.proj-hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.proj-hero-media {
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0,0,0,.35);
  aspect-ratio: 4/3;
}
.proj-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- Datos clave (tira de íconos) ---------- */
.proj-datos-sec {
  background: var(--white);
  padding: 0;
}
.proj-datos {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  overflow: hidden;
  margin: -40px 0 0;             /* superpone levemente sobre el hero */
  position: relative;
  z-index: 2;
  box-shadow: 0 18px 50px rgba(19,48,85,.12);
}
.dato {
  background: var(--white);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
  padding: 26px 16px;
}
.dato-ico { color: var(--navy); display: inline-flex; }
.dato-valor {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--navy);
  line-height: 1.1;
}
.dato-label {
  font-size: .76rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--steel);
}

/* ---------- Galería: carrusel ---------- */
.proj-gallery { position: relative; }
.gal-track {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  padding: 4px;
  scrollbar-width: thin;
  scrollbar-color: var(--steel) transparent;
}
.gal-track::-webkit-scrollbar { height: 6px; }
.gal-track::-webkit-scrollbar-thumb { background: var(--steel); border-radius: 3px; }
.gal-slide {
  flex: 0 0 86%;
  scroll-snap-align: center;
  aspect-ratio: 16/10;
  border-radius: var(--radius-l);
  overflow: hidden;
  padding: 0;
  background: var(--off);
  position: relative;
}
.gal-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s var(--ease);
}
.gal-slide:hover img { transform: scale(1.04); }
.gal-slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 70%, rgba(0,0,0,.25));
  opacity: 0;
  transition: opacity .3s var(--ease);
  pointer-events: none;
}
.gal-slide:hover::after { opacity: 1; }

.gal-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 46px; height: 46px;
  border-radius: 50%;
  background: rgba(255,255,255,.92);
  color: var(--navy);
  display: inline-flex;
  align-items: center; justify-content: center;
  box-shadow: 0 8px 24px rgba(19,48,85,.2);
  transition: background .2s var(--ease), transform .2s var(--ease);
  z-index: 3;
}
.gal-nav:hover { background: var(--white); transform: translateY(-50%) scale(1.06); }
.gal-prev { left: 8px; }
.gal-next { right: 8px; }

/* ---------- Video ---------- */
.video-frame {
  position: relative;
  border-radius: var(--radius-l);
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--navy);
  box-shadow: 0 18px 50px rgba(19,48,85,.18);
}
.video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* ---------- Descripción ---------- */
.proj-desc-sec { background: var(--off); }
.proj-descripcion {
  font-size: 1.12rem;
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: 820px;
}

/* ---------- Ubicación ---------- */
.proj-ubic-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: stretch;
}
.proj-map {
  border-radius: var(--radius-l);
  overflow: hidden;
  min-height: 320px;
  box-shadow: 0 12px 40px rgba(19,48,85,.1);
  border: 1px solid var(--line);
}
.proj-map iframe {
  width: 100%;
  height: 100%;
  min-height: 320px;
  border: 0;
  display: block;
}
.proj-poi-wrap h3 {
  font-size: 1.1rem;
  margin-bottom: 16px;
}
.proj-poi { display: flex; flex-direction: column; gap: 12px; }
.proj-poi li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--ink-soft);
  font-size: .98rem;
}
.proj-poi li svg { color: var(--steel); flex: 0 0 auto; margin-top: 2px; }

/* ---------- Acordeón ---------- */
.proj-acc-sec { background: var(--off); }
.proj-acordeon {
  max-width: 860px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.acc-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  transition: box-shadow .25s var(--ease);
}
.acc-item[open] { box-shadow: 0 12px 32px rgba(19,48,85,.08); }
.acc-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.12rem;
  color: var(--navy);
}
.acc-summary::-webkit-details-marker { display: none; }
.acc-summary:hover { color: var(--navy-dark); }
.acc-chevron { color: var(--steel); transition: transform .3s var(--ease); flex: 0 0 auto; }
.acc-item[open] .acc-chevron { transform: rotate(180deg); }
.acc-body {
  padding: 0 24px 24px;
  color: var(--ink-soft);
}
.acc-body p { margin: 0 0 .8rem; }
.acc-body p:last-child { margin-bottom: 0; }
.acc-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px 24px;
  margin-top: 4px;
}
.acc-list li {
  position: relative;
  padding-left: 20px;
  line-height: 1.5;
}
.acc-list li::before {
  content: "";
  position: absolute;
  left: 4px; top: .62em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--steel);
}

/* ---------- Cierre / CTA ---------- */
.proj-cierre {
  background: var(--navy);
  color: var(--white);
  position: relative;
  padding: clamp(64px, 8vw, 110px) 0;
  overflow: hidden;
}
.proj-cierre::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 15% 20%, rgba(131,149,153,.22), transparent 55%),
    radial-gradient(ellipse at 85% 90%, rgba(131,149,153,.14), transparent 60%);
  pointer-events: none;
}
.proj-cierre-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
}
.proj-cierre-inner h2 { color: var(--white); font-family: var(--font-serif); font-weight: 500; }
.proj-cierre-inner p { color: rgba(255,255,255,.78); max-width: 560px; }
.proj-cierre-inner .section-eyebrow.light { color: var(--steel); }
.proj-cierre-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(8, 18, 33, .92);
  opacity: 0;
  transition: opacity .24s var(--ease);
  padding: 24px;
}
/* Sin esto, .lightbox { display:flex } pisa al atributo [hidden] y deja un
   overlay transparente a pantalla completa que intercepta TODOS los clicks. */
.lightbox[hidden] { display: none; }
.lightbox.open { opacity: 1; }
.lb-figure {
  margin: 0;
  max-width: min(1100px, 92vw);
  max-height: 86vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.lb-img {
  max-width: 100%;
  max-height: 78vh;
  border-radius: var(--radius-m);
  object-fit: contain;
  box-shadow: 0 24px 70px rgba(0,0,0,.5);
}
.lb-caption {
  color: rgba(255,255,255,.82);
  font-size: .9rem;
  letter-spacing: .03em;
  text-align: center;
}
.lb-close {
  position: fixed;
  top: 20px; right: 20px;
  width: 48px; height: 48px;
  border-radius: 50%;
  color: var(--white);
  background: rgba(255,255,255,.1);
  display: inline-flex;
  align-items: center; justify-content: center;
  transition: background .2s var(--ease);
}
.lb-close:hover { background: rgba(255,255,255,.22); }
.lb-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: 52px; height: 52px;
  border-radius: 50%;
  color: var(--white);
  background: rgba(255,255,255,.1);
  display: inline-flex;
  align-items: center; justify-content: center;
  transition: background .2s var(--ease);
  z-index: 1;
}
.lb-nav:hover { background: rgba(255,255,255,.22); }
.lb-prev { left: 16px; }
.lb-next { right: 16px; }

/* ---------- Breakpoints página de proyecto ---------- */
@media (min-width: 640px) {
  .proj-datos { grid-template-columns: repeat(3, 1fr); }
  .gal-slide { flex-basis: 60%; }
  .acc-list { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 880px) {
  .proj-hero-inner { grid-template-columns: 1.05fr .95fr; gap: 56px; }
  .proj-datos { grid-template-columns: repeat(5, 1fr); }
  .gal-slide { flex-basis: 42%; }
  .proj-ubic-grid { grid-template-columns: 1.4fr 1fr; gap: 40px; }
}
@media (prefers-reduced-motion: reduce) {
  .gal-track { scroll-behavior: auto; }
  .lightbox { transition: none; }
  .gal-slide img { transition: none; }
}