/* =============================================================
   ECO-STRUCTURAS DE LA COSTA S.A.S — styles.css
   1. Tokens
   2. Reset & base
   3. Utilities
   4. Typography
   5. Components
   6. Sections
   7. Effects
   8. Responsive
   9. Reduced-motion
   ============================================================= */

/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  /* Paleta de marca */
  --azul-950:   #0a2438;
  --azul-900:   #0d3348;
  --azul-800:   #124a68;
  --azul-700:   #186c9c;
  --azul-600:   #2f93c4;

  --acento:     #2f8a5c;
  --acento-600: #235f40;

  --blanco:      #ffffff;
  --concreto-50: #f4f8f9;
  --concreto-100:#e7eef1;
  --concreto-200:#d2dee2;
  --concreto-300:#b3c4ca;

  --tinta:       #101c22;
  --tinta-soft:  #32444c;
  --tinta-mute:  #647880;

  --linea:       rgba(16,28,34,0.12);
  --linea-inv:   rgba(255,255,255,0.16);

  /* Semántico */
  --bg:          var(--blanco);
  --bg-alt:      var(--concreto-50);
  --ink:         var(--tinta);
  --ink-soft:    var(--tinta-soft);
  --ink-mute:    var(--tinta-mute);
  --accent:      var(--azul-800);
  --accent-2:    var(--acento);

  /* Tipografía */
  --display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --sans:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;

  /* Easings */
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:     cubic-bezier(0.7, 0, 0.84, 0);
  --ease-soft:   cubic-bezier(0.25, 0.46, 0.45, 0.94);

  --radius:      10px;
  --radius-lg:   18px;
  --gutter:      clamp(1.25rem, 4vw, 3rem);
  --nav-h:       84px;
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html {
  -webkit-text-size-adjust: 100%;
  tab-size: 2;
  scroll-behavior: smooth;
  overflow-x: clip;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  overscroll-behavior-y: none;
}
img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; }
p { text-wrap: pretty; }
h1, h2, h3, h4 { font-family: var(--display); text-wrap: balance; line-height: 1.06; letter-spacing: -0.01em; font-weight: 600; }
::selection { background: var(--accent-2); color: var(--blanco); }
:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 3px; border-radius: 4px; }
input, textarea { font: inherit; color: inherit; }

/* =============================================================
   3. Utilities
   ============================================================= */
.container { width: 100%; max-width: 1280px; margin-inline: auto; padding-inline: var(--gutter); }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; top: -100px; left: 1rem; z-index: 9999;
  padding: .7rem 1.2rem; background: var(--azul-800); color: var(--blanco);
  border-radius: 8px; font-weight: 600; transition: top .3s var(--ease-out);
}
.skip-link:focus { top: 1rem; }

.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: .78rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent-2); margin-bottom: 1rem;
}
.eyebrow::before { content: ""; width: 28px; height: 2px; background: var(--accent-2); }

.section-head { max-width: 640px; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head h2 { font-size: clamp(1.9rem, 4vw, 2.9rem); margin-bottom: .9rem; }
.section-head p { color: var(--ink-mute); font-size: 1.05rem; }

section { padding-block: clamp(4rem, 9vw, 7.5rem); }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--azul-900); color: var(--concreto-50); }
.section-dark .ink-mute { color: rgba(246,246,244,0.68); }
.section-dark .eyebrow { color: var(--azul-600); }
.section-dark .eyebrow::before { background: var(--azul-600); }
.section-dark h2 { color: var(--blanco); }

.values-strip { display: grid; gap: 1px; grid-template-columns: 1fr; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius-lg); overflow: clip; }
.value-chip { padding: 1.6rem 1.5rem; background: var(--azul-900); }
.value-chip strong { display: block; font-family: var(--display); font-size: 1.05rem; color: var(--blanco); margin-bottom: .5rem; }
.value-chip span { font-size: .88rem; color: rgba(246,246,244,.68); }

/* =============================================================
   4. Typography extras
   ============================================================= */
.lede { font-size: 1.1rem; color: var(--ink-mute); max-width: 60ch; }

/* =============================================================
   5. Components
   ============================================================= */

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  padding: .95rem 1.7rem; border-radius: 999px; font-weight: 600; font-size: .96rem;
  transition: transform .45s var(--ease-out), background-color .3s var(--ease-out), color .3s var(--ease-out), box-shadow .3s var(--ease-out);
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; flex: none; }
.btn-primary { background: var(--accent-2); color: var(--blanco); box-shadow: 0 10px 24px -8px rgba(47,138,92,.55); }
.btn-primary:hover { background: var(--acento-600); transform: translateY(-2px); box-shadow: 0 14px 30px -8px rgba(47,138,92,.6); }
.btn-outline { background: transparent; color: var(--blanco); border: 1.5px solid rgba(255,255,255,.55); }
.btn-outline:hover { background: rgba(255,255,255,.12); transform: translateY(-2px); }
.btn-ghost { background: transparent; color: var(--azul-800); border: 1.5px solid var(--linea); }
.btn-ghost:hover { background: var(--azul-800); color: var(--blanco); border-color: var(--azul-800); transform: translateY(-2px); }
.btn-dark { background: var(--azul-800); color: var(--blanco); }
.btn-dark:hover { background: var(--azul-700); transform: translateY(-2px); }
.btn-block { width: 100%; }
.btn:active { transform: translateY(0) scale(.98); }

/* Nav */
.navbar {
  position: fixed; inset: 0 0 auto 0; z-index: 500;
  height: var(--nav-h);
  display: flex; align-items: center;
  transition: background-color .4s var(--ease-out), box-shadow .4s var(--ease-out), height .4s var(--ease-out), backdrop-filter .4s var(--ease-out);
}
.navbar-inner { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.navbar.is-scrolled {
  height: 68px;
  background: rgba(255,255,255,0.92);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  backdrop-filter: blur(14px) saturate(160%);
  box-shadow: 0 8px 30px -18px rgba(10,36,56,.35);
}
.navbar.is-scrolled .nav-link,
.navbar.is-scrolled .brand-text { color: var(--ink); }

.brand { display: flex; align-items: center; gap: .6rem; font-family: var(--display); font-weight: 700; }
.brand-mark {
  height: 40px; width: auto; flex: none;
  filter: drop-shadow(0 1px 3px rgba(10,36,56,.35));
}
.brand-text { display: flex; flex-direction: column; line-height: 1.05; color: var(--blanco); transition: color .4s var(--ease-out); }
.brand-text strong { font-size: .95rem; letter-spacing: .01em; }
.brand-text span { font-size: .62rem; letter-spacing: .08em; text-transform: uppercase; color: var(--accent-2); font-weight: 600; }

.nav-links { display: none; align-items: center; gap: 2.1rem; }
.nav-link {
  position: relative; font-size: .93rem; font-weight: 500; color: var(--blanco);
  padding-block: .3rem; transition: color .4s var(--ease-out);
}
.nav-link::after {
  content: ""; position: absolute; left: 0; bottom: -2px; width: 100%; height: 2px;
  background: var(--accent-2); transform: scaleX(0); transform-origin: left;
  transition: transform .4s var(--ease-out);
}
.nav-link:hover::after, .nav-link.is-active::after { transform: scaleX(1); }

.nav-cta { display: none; }
.nav-toggle {
  display: flex; flex-direction: column; justify-content: center; gap: 5px;
  width: 42px; height: 42px; border-radius: 10px;
}
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--blanco); margin-inline: auto; transition: background .4s var(--ease-out), transform .35s var(--ease-out), opacity .35s var(--ease-out); }
.navbar.is-scrolled .nav-toggle span { background: var(--ink); }
.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); }

.mobile-menu {
  position: fixed; inset: var(--nav-h) 0 0 0; z-index: 490;
  background: var(--azul-900); padding: 2rem var(--gutter);
  display: flex; flex-direction: column; gap: 1.6rem;
  transform: translateY(-12px); opacity: 0; pointer-events: none;
  transition: transform .4s var(--ease-out), opacity .35s var(--ease-out);
}
.mobile-menu.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
.mobile-menu a { color: var(--concreto-50); font-family: var(--display); font-size: 1.5rem; font-weight: 600; }
.mobile-menu .btn { align-self: flex-start; margin-top: 1rem; }

/* Cards */
.card {
  background: var(--blanco); border-radius: var(--radius-lg);
  border: 1px solid var(--linea);
  transition: transform .5s var(--ease-out), box-shadow .5s var(--ease-out), border-color .5s var(--ease-out);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 26px 50px -24px rgba(10,36,56,.28);
  border-color: transparent;
}

/* Badges (certificaciones) */
.badge-list { display: flex; flex-direction: column; gap: .7rem; margin-top: 1.1rem; }
.badge {
  display: flex; align-items: center; gap: .65rem;
  font-size: .88rem; font-weight: 600; color: var(--ink);
  background: var(--bg-alt); border: 1px solid var(--linea);
  padding: .6rem .85rem; border-radius: 10px;
}
.badge svg { width: 18px; height: 18px; flex: none; color: var(--azul-700); }

/* Form */
.field { display: flex; flex-direction: column; gap: .4rem; margin-bottom: 1.15rem; }
.field label { font-size: .82rem; font-weight: 600; color: var(--ink-soft); }
.field input, .field textarea {
  padding: .85rem 1rem; border-radius: 10px; border: 1.5px solid var(--linea);
  background: var(--bg-alt); transition: border-color .3s var(--ease-out), background .3s var(--ease-out);
}
.field input:focus, .field textarea:focus { border-color: var(--azul-700); background: var(--blanco); outline: none; }
.field textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: .82rem; color: var(--ink-mute); margin-top: .85rem; }
.form-success {
  display: none; align-items: center; gap: .6rem; padding: .9rem 1.1rem;
  background: rgba(31,74,61,.08); border: 1px solid rgba(31,74,61,.25); border-radius: 10px;
  color: var(--azul-800); font-weight: 600; font-size: .92rem; margin-top: 1rem;
}
.form-success.is-visible { display: flex; }
.form-success svg { width: 20px; height: 20px; flex: none; }

/* =============================================================
   6. Sections
   ============================================================= */

/* --- Hero (split: maquinaria izquierda / precios y CTA derecha) --- */
.hero { position: relative; color: var(--blanco); overflow: clip; background: var(--azul-950); }
.hero-grid { display: grid; grid-template-columns: 1fr; }
.hero-media-col { position: relative; aspect-ratio: 4 / 3; }
.hero-media { position: absolute; inset: 0; z-index: 0; }
.hero-slide {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  opacity: 0; transition: opacity 1.6s var(--ease-soft);
}
.hero-slide.is-active { opacity: 1; }
.hero-media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10,36,56,0) 55%, rgba(10,36,56,.45) 100%);
}
.hero-content-col {
  position: relative; z-index: 1; display: flex; flex-direction: column;
  padding: calc(var(--nav-h) + 2rem) var(--gutter) 3rem;
}
.hero-eyebrow {
  display: inline-flex; align-self: flex-start; align-items: center; gap: .6rem;
  font-size: .8rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--concreto-50); background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.25);
  padding: .5rem .9rem; border-radius: 999px; margin-bottom: 1.6rem;
}
.hero-eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-2); }
.hero-sub { font-size: 1.05rem; color: rgba(246,246,244,.88); max-width: 46ch; margin: 1.8rem 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: auto; }

/* --- Manifiesto / statement (bajo el Hero) --- */
.intro-statement { padding-block: clamp(3rem, 7vw, 5rem); }
.intro-statement h1 {
  font-family: var(--display); font-weight: 600; text-wrap: balance;
  font-size: clamp(1.6rem, 3.6vw, 2.6rem); line-height: 1.2; letter-spacing: -0.01em;
  color: var(--ink); max-width: 22ch; margin-inline: auto; text-align: center;
}

.hero-materials-head { margin-bottom: .9rem; }
.hero-materials-label {
  font-size: .78rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  color: rgba(246,246,244,.7);
}
.hero-materials { display: grid; grid-template-columns: repeat(2, 1fr); gap: .7rem; margin-bottom: .7rem; }
.material-chip {
  display: flex; flex-direction: column; gap: .15rem; padding: 1rem 1.1rem 1.1rem;
  background: rgba(10,36,56,.55); border: 1px solid rgba(255,255,255,.16); border-radius: 12px;
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  transition: border-color .3s var(--ease-out), background .3s var(--ease-out), transform .3s var(--ease-out);
}
.material-chip:hover { border-color: var(--accent-2); background: rgba(10,36,56,.75); transform: translateY(-2px); }
.material-name {
  font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  color: rgba(246,246,244,.75);
}
.material-desde { font-size: .78rem; font-weight: 500; color: rgba(246,246,244,.6); margin-top: .35rem; }
.material-price {
  font-family: var(--display); font-weight: 700; color: var(--blanco);
  font-size: clamp(1.3rem, 2.6vw, 1.7rem); line-height: 1.1; letter-spacing: -0.01em;
}
.material-asterisk { color: var(--accent-2); font-size: .8em; }
.hero-materials-footnote { font-size: .72rem; color: rgba(246,246,244,.5); max-width: 60ch; }

/* --- Franja de confianza (Quiénes somos) --- */
.trust-row { display: flex; flex-wrap: wrap; gap: .9rem 1.6rem; margin-top: 1.8rem; }
.trust-item { display: flex; align-items: center; gap: .55rem; }
.trust-item svg { width: 20px; height: 20px; flex: none; color: var(--azul-700); }
.trust-item span { font-size: .85rem; font-weight: 600; color: var(--ink-soft); }

/* --- Quiénes somos --- */
.about-grid { display: grid; gap: clamp(2.5rem, 6vw, 5rem); align-items: center; }
.about-media { position: relative; border-radius: var(--radius-lg); overflow: clip; aspect-ratio: 4/5; }
.about-media img { width: 100%; height: 100%; object-fit: cover; }
.about-media-tag {
  position: absolute; left: 1.2rem; bottom: 1.2rem;
  background: var(--blanco); border-radius: 12px; padding: .9rem 1.1rem;
  box-shadow: 0 20px 40px -20px rgba(10,36,56,.4);
  display: flex; align-items: center; gap: .8rem;
}
.about-media-tag strong { font-family: var(--display); font-size: 1.6rem; color: var(--azul-800); display: block; line-height: 1; }
.about-media-tag span { font-size: .72rem; color: var(--ink-mute); }
.about-text h2 { font-size: clamp(1.9rem, 4vw, 2.7rem); margin-bottom: 1.2rem; }
.about-text p { color: var(--ink-mute); margin-bottom: 1rem; max-width: 56ch; }

.timeline { display: grid; gap: 1.4rem; margin-top: 2.4rem; }
.timeline-item { display: flex; gap: 1rem; }
.timeline-marker { display: flex; flex-direction: column; align-items: center; }
.timeline-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--accent-2); flex: none; }
.timeline-line { width: 2px; flex: 1; background: var(--linea); margin-block: 6px; }
.timeline-item:last-child .timeline-line { display: none; }
.timeline-content strong { font-family: var(--display); font-size: 1.02rem; color: var(--azul-800); display: block; margin-bottom: .25rem; }
.timeline-content p { font-size: .92rem; color: var(--ink-mute); max-width: 46ch; }

/* --- Propuesta de valor --- */
.value-grid { display: grid; gap: 1.4rem; grid-template-columns: 1fr; }
.value-card { padding: 2.1rem 1.9rem; }
.value-kicker {
  font-family: var(--display); font-size: 2.1rem; font-weight: 700; color: var(--concreto-200);
  -webkit-text-stroke: 1.5px var(--azul-700); color: transparent;
  margin-bottom: 1rem; line-height: 1;
}
.value-card h3 { font-size: 1.3rem; margin-bottom: .8rem; }
.value-card p { color: var(--ink-mute); font-size: .96rem; }
.value-card--compliance { background: var(--azul-900); color: var(--concreto-50); border-color: transparent; }
.value-card--compliance .value-kicker { -webkit-text-stroke: 1.5px var(--accent-2); }
.value-card--compliance p { color: rgba(246,246,244,.72); }
.value-card--compliance .badge { background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.14); color: var(--concreto-50); }
.value-card--compliance .badge svg { color: var(--accent-2); }
.compliance-note { font-size: .78rem; color: rgba(246,246,244,.6); margin-top: 1.1rem; line-height: 1.5; }

/* --- Servicios --- */
.services-grid { display: grid; gap: 1.6rem; grid-template-columns: 1fr; }
.service-card { position: relative; overflow: clip; border-radius: var(--radius-lg); isolation: isolate; transition: transform .5s var(--ease-out); }
.service-media { position: relative; aspect-ratio: 16/10; overflow: clip; }
.service-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease-out); }
.service-card:hover .service-media img { transform: scale(1.08); }
.service-media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10,36,56,.05) 0%, rgba(10,36,56,.85) 100%);
}
.service-icon {
  position: absolute; top: 1.1rem; left: 1.1rem; z-index: 2;
  width: 46px; height: 46px; border-radius: 12px; background: var(--accent-2);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 24px -8px rgba(47,138,92,.5);
}
.service-icon svg { width: 24px; height: 24px; color: var(--blanco); }
.service-body { padding: 1.7rem 1.7rem 1.9rem; background: var(--blanco); }
.service-body h3 { font-size: 1.25rem; margin-bottom: .9rem; }
.service-list { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.4rem; }
.service-list li {
  font-size: .8rem; font-weight: 600; color: var(--azul-800);
  background: var(--bg-alt); border: 1px solid var(--linea);
  padding: .38rem .75rem; border-radius: 999px;
}

/* --- Clientes --- */
.clients-head { text-align: center; margin-bottom: 3rem; }
.clients-head p { color: var(--ink-mute); font-family: var(--display); font-size: 1.1rem; }
.clients-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.1rem; }
.client-slot { display: flex; flex-direction: column; gap: .7rem; }
.client-frame {
  position: relative; display: block; aspect-ratio: 3/2; border-radius: var(--radius);
  background: var(--blanco); border: 1px solid var(--linea); overflow: clip;
  transition: border-color .35s var(--ease-out), box-shadow .35s var(--ease-out);
}
.client-slot:hover .client-frame { border-color: var(--azul-600); box-shadow: 0 14px 28px -18px rgba(10,36,56,.35); }
.client-frame img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; padding: 1.1rem;
  opacity: 0; transition: opacity .4s var(--ease-out);
}
.client-frame.has-logo img { opacity: 1; }
.client-frame.has-logo .client-empty { opacity: 0; pointer-events: none; }
.client-empty {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .4rem;
  color: var(--concreto-300); background:
    repeating-linear-gradient(135deg, var(--concreto-50), var(--concreto-50) 10px, var(--blanco) 10px, var(--blanco) 20px);
  transition: opacity .3s var(--ease-out);
}
.client-empty svg { width: 26px; height: 26px; }
.client-empty span { font-size: .72rem; font-weight: 600; color: var(--ink-mute); text-transform: uppercase; letter-spacing: .04em; }
.client-slot figcaption { text-align: center; font-size: .82rem; font-weight: 600; color: var(--ink-soft); }
.clients-note { text-align: center; font-size: .88rem; color: var(--ink-mute); max-width: 62ch; margin: 2.5rem auto 0; line-height: 1.6; }

/* --- Proyectos --- */
.projects-grid { display: grid; gap: 1.6rem; grid-template-columns: 1fr; }
.project-card {
  position: relative; border-radius: var(--radius-lg); overflow: clip; aspect-ratio: 4/5;
  isolation: isolate; transition: transform .5s var(--ease-out);
}
.project-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease-out); }
.project-card:hover img { transform: scale(1.1); }
.project-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10,36,56,0) 30%, rgba(10,36,56,.92) 100%);
}
.project-content {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 1.7rem;
  color: var(--blanco);
  transform: translateY(14px); opacity: .92;
  transition: transform .5s var(--ease-out);
}
.project-card:hover .project-content { transform: translateY(0); }
.project-content h3 { font-size: 1.15rem; margin-bottom: .5rem; }
.project-content p { font-size: .88rem; color: rgba(246,246,244,.8); margin-bottom: 1.1rem; max-width: 34ch; }
.project-link { display: inline-flex; align-items: center; gap: .5rem; font-weight: 700; font-size: .85rem; color: var(--accent-2); }
.project-link svg { width: 16px; height: 16px; transition: transform .35s var(--ease-out); }
.project-card:hover .project-link svg { transform: translateX(4px); }

/* --- Contacto --- */
.contact-section { position: relative; color: var(--concreto-50); overflow: clip; }
.contact-bg { position: absolute; inset: 0; z-index: 0; }
.contact-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .18; }
.contact-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(160deg, var(--azul-950) 10%, var(--azul-800) 100%); }
.contact-grid { position: relative; z-index: 1; display: grid; gap: clamp(2.5rem, 6vw, 5rem); }
.contact-form-wrap { background: var(--blanco); color: var(--ink); border-radius: var(--radius-lg); padding: clamp(1.8rem, 4vw, 2.6rem); }
.contact-form-wrap h2 { font-size: 1.6rem; margin-bottom: .5rem; color: var(--ink); }
.contact-form-wrap > p { color: var(--ink-mute); margin-bottom: 1.6rem; font-size: .93rem; }
.contact-info h2 { font-size: 1.9rem; margin-bottom: 1.6rem; }
.info-list { display: flex; flex-direction: column; gap: 1.5rem; margin-bottom: 2.2rem; }
.info-item { display: flex; gap: 1rem; }
.info-icon {
  width: 42px; height: 42px; border-radius: 10px; flex: none;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18);
  display: flex; align-items: center; justify-content: center;
}
.info-icon svg { width: 20px; height: 20px; color: var(--accent-2); }
.info-item strong { display: block; font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; color: rgba(246,246,244,.62); margin-bottom: .3rem; }
.info-item a, .info-item span { font-size: 1rem; font-weight: 500; color: var(--concreto-50); }
.payments { display: flex; gap: .6rem; flex-wrap: wrap; }
.payment-chip {
  font-size: .8rem; font-weight: 600; padding: .5rem .9rem; border-radius: 999px;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.18);
}

/* --- WhatsApp flotante --- */
.whatsapp-float {
  position: fixed; right: clamp(1rem, 3vw, 1.8rem); bottom: clamp(1rem, 3vw, 1.8rem); z-index: 600;
  width: 60px; height: 60px; border-radius: 50%;
  background: #25D366; color: var(--blanco);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 14px 32px -10px rgba(37,211,102,.6);
  transition: transform .4s var(--ease-out), box-shadow .4s var(--ease-out);
}
.whatsapp-float:hover { transform: translateY(-4px) scale(1.05); box-shadow: 0 18px 38px -8px rgba(37,211,102,.7); }
.whatsapp-float svg { width: 30px; height: 30px; }
.whatsapp-pulse {
  position: absolute; inset: 0; border-radius: 50%; background: #25D366;
  animation: waPulse 2.6s var(--ease-out) infinite;
}
@keyframes waPulse {
  0% { transform: scale(1); opacity: .55; }
  100% { transform: scale(1.9); opacity: 0; }
}

/* --- Footer --- */
.footer { background: var(--tinta); color: var(--concreto-100); padding-block: 3.5rem 2rem; }
.footer-grid { display: grid; gap: 2.4rem; margin-bottom: 2.6rem; }
.footer-brand .brand-text { color: var(--concreto-50); }
.footer-brand .brand-mark { height: 54px; filter: drop-shadow(0 2px 6px rgba(0,0,0,.35)); }
.footer-brand p { color: rgba(246,246,244,.6); font-size: .9rem; margin-top: 1rem; max-width: 34ch; }
.footer-col h4 { font-family: var(--display); font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; color: var(--concreto-200); margin-bottom: 1.1rem; }
.footer-col ul { display: flex; flex-direction: column; gap: .7rem; }
.footer-col a { font-size: .9rem; color: rgba(246,246,244,.72); transition: color .3s var(--ease-out); }
.footer-col a:hover { color: var(--accent-2); }
.footer-bottom {
  display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center;
  padding-top: 1.8rem; border-top: 1px solid rgba(255,255,255,.1);
  font-size: .8rem; color: rgba(246,246,244,.5);
}
.footer-bottom a { color: rgba(246,246,244,.5); text-decoration: underline; text-underline-offset: 3px; }
.footer-bottom a:hover { color: var(--accent-2); }

/* =============================================================
   7. Effects
   ============================================================= */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease-out), transform .8s var(--ease-out); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > * { transition-delay: calc(var(--stagger-i, 0) * 90ms); }

[data-tilt] { transform-style: preserve-3d; will-change: transform; }

.count-up { font-variant-numeric: tabular-nums; }

/* =============================================================
   8. Responsive
   ============================================================= */
@media (min-width: 540px) {
  .hero-materials { grid-template-columns: repeat(3, 1fr); }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .clients-grid { grid-template-columns: repeat(3, 1fr); }
  .values-strip { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
}

@media (min-width: 720px) {
  .about-grid { grid-template-columns: 1fr 1fr; }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-form-wrap { padding: 3rem; }
}

@media (min-width: 960px) {
  .nav-links { display: flex; }
  .nav-cta { display: inline-flex; }
  .nav-toggle { display: none; }
  .value-grid { grid-template-columns: repeat(4, 1fr); }
  .projects-grid { grid-template-columns: repeat(3, 1fr); }
  .clients-grid { grid-template-columns: repeat(6, 1fr); }
  .values-strip { grid-template-columns: repeat(3, 1fr); }
  .contact-grid { grid-template-columns: 1fr .82fr; }

  .hero-grid { grid-template-columns: 1.05fr 1fr; min-height: 100vh; min-height: 100svh; }
  .hero-media-col { aspect-ratio: auto; }
  .hero-content-col { justify-content: center; padding-inline: clamp(2rem, 4vw, 4rem); }
}

@media (min-width: 1280px) {
  .services-grid { grid-template-columns: repeat(4, 1fr); }
  .about-grid { grid-template-columns: .9fr 1.1fr; }
}

/* =============================================================
   9. Reduced motion — only truly intrusive effects
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  .whatsapp-pulse { animation: none; }
  .hero-slide { transform: none; transition: opacity .6s linear; }
}