/* ═══════════════════════════════════════════════
   GRUPO DIPAL — Hoja de estilos principal
   Tema: Navy profundo + ámbar constructivo
   ═══════════════════════════════════════════════ */

:root{
  --navy-950:#070d16;
  --navy-900:#0a1220;
  --navy-800:#0d1b2a;
  --navy-700:#13263a;
  --navy-600:#1b3a57;
  --amber:#f0a92e;
  --amber-soft:#ffc25e;
  --amber-dim:rgba(240,169,46,.14);
  --ink:#eaf1f8;
  --ink-dim:#9fb0c3;
  --ink-mute:#6b7f95;
  --card:#101f31;
  --card-border:rgba(240,169,46,.12);
  --white:#ffffff;
  --font-display:'Sora','Segoe UI',system-ui,sans-serif;
  --font-body:'Inter','Segoe UI',system-ui,sans-serif;
  --radius:18px;
  --shadow-lg:0 24px 60px -18px rgba(0,0,0,.55);
  --ease:cubic-bezier(.22,1,.36,1);
  --nav-h:76px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
section[id]{scroll-margin-top:calc(var(--nav-h) - 4px)}
body{
  font-family:var(--font-body);
  background:var(--navy-900);
  color:var(--ink);
  line-height:1.65;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
::selection{background:var(--amber);color:var(--navy-900)}

.container{width:min(1180px,92%);margin-inline:auto}

/* ── Preloader ─────────────────────────────── */
.preloader{
  position:fixed;inset:0;z-index:1000;
  background:var(--navy-950);
  display:flex;align-items:center;justify-content:center;
  transition:opacity .6s ease,visibility .6s ease;
}
.preloader.done{opacity:0;visibility:hidden}
.preloader-inner{display:flex;flex-direction:column;align-items:center;gap:18px}
.preloader-logo svg{animation:plPulse 1.6s ease-in-out infinite}
.pl-frame{stroke-dasharray:400;stroke-dashoffset:400;animation:plDraw 1.4s var(--ease) forwards}
@keyframes plDraw{to{stroke-dashoffset:0}}
@keyframes plPulse{0%,100%{transform:scale(1)}50%{transform:scale(1.04)}}
.preloader-text{
  font-family:var(--font-display);font-weight:800;font-size:1.35rem;
  letter-spacing:.35em;color:var(--ink);
}
.preloader-text span{color:var(--amber)}
.preloader-bar{width:180px;height:3px;background:rgba(255,255,255,.08);border-radius:99px;overflow:hidden}
.preloader-bar span{display:block;height:100%;width:0;background:var(--amber);border-radius:99px;animation:plBar 1.5s var(--ease) forwards}
@keyframes plBar{to{width:100%}}

/* ── Barra de progreso ─────────────────────── */
.scroll-progress{
  position:fixed;top:0;left:0;height:3px;width:0;z-index:900;
  background:linear-gradient(90deg,var(--amber),var(--amber-soft));
  box-shadow:0 0 12px rgba(240,169,46,.6);
}

/* ── Navegación ────────────────────────────── */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:800;
  height:var(--nav-h);
  transition:background .35s ease,box-shadow .35s ease,height .35s ease;
}
.nav.scrolled{
  background:rgba(10,18,32,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 10px 30px -12px rgba(0,0,0,.6);
  height:64px;
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:100%}
.brand{display:flex;align-items:center;gap:12px}
.brand-text{
  font-family:var(--font-display);font-size:.98rem;font-weight:600;
  letter-spacing:.14em;line-height:1.15;display:flex;flex-direction:column;
}
.brand-text b{color:var(--amber);font-weight:800}
.brand-text small{
  font-size:.58rem;letter-spacing:.3em;text-transform:uppercase;
  color:var(--ink-mute);font-family:var(--font-body);font-weight:500;
}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  font-size:.9rem;font-weight:500;color:var(--ink-dim);
  padding:9px 14px;border-radius:10px;position:relative;
  transition:color .25s ease,background .25s ease;
}
.nav-links a:hover{color:var(--white);background:rgba(255,255,255,.05)}
.nav-links a.active{color:var(--amber)}
.nav-cta{
  background:var(--amber);color:var(--navy-900)!important;
  font-weight:700!important;margin-left:10px;
  box-shadow:0 8px 24px -8px rgba(240,169,46,.55);
}
.nav-cta:hover{background:var(--amber-soft)!important;transform:translateY(-1px)}
.nav-toggle{
  display:none;background:none;border:0;cursor:pointer;
  flex-direction:column;gap:5px;padding:8px;z-index:20;
}
.nav-toggle span{width:26px;height:2.5px;background:var(--ink);border-radius:3px;transition:.3s var(--ease)}

/* ── Botones ───────────────────────────────── */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-display);font-weight:700;font-size:.95rem;
  padding:15px 28px;border-radius:14px;border:0;cursor:pointer;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--amber),#e08f12);
  color:var(--navy-950);
  box-shadow:0 14px 34px -10px rgba(240,169,46,.5);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 20px 44px -10px rgba(240,169,46,.65)}
.btn-primary svg{transition:transform .25s ease}
.btn-primary:hover svg{transform:translateX(4px)}
.btn-ghost{
  background:rgba(255,255,255,.04);color:var(--ink);
  border:1px solid rgba(255,255,255,.14);
}
.btn-ghost:hover{background:rgba(255,255,255,.09);transform:translateY(-3px)}
.btn-block{width:100%;justify-content:center}

/* ── Hero ──────────────────────────────────── */
.hero{
  position:relative;min-height:100vh;
  display:flex;align-items:center;
  padding:calc(var(--nav-h) + 40px) 0 90px;
  background:radial-gradient(120% 90% at 70% 10%,var(--navy-700) 0%,var(--navy-900) 55%,var(--navy-950) 100%);
  overflow:hidden;
}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.hero-grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(240,169,46,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(240,169,46,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(80% 70% at 50% 40%,black 30%,transparent 100%);
  -webkit-mask-image:radial-gradient(80% 70% at 50% 40%,black 30%,transparent 100%);
  animation:gridDrift 24s linear infinite;
}
@keyframes gridDrift{to{background-position:56px 56px,56px 56px}}
.hero-glow{position:absolute;border-radius:50%;filter:blur(90px)}
.hero-glow-1{
  width:520px;height:520px;top:-140px;right:-100px;
  background:radial-gradient(circle,rgba(240,169,46,.16),transparent 65%);
  animation:glowFloat 9s ease-in-out infinite;
}
.hero-glow-2{
  width:420px;height:420px;bottom:-160px;left:-120px;
  background:radial-gradient(circle,rgba(37,99,168,.22),transparent 65%);
  animation:glowFloat 11s ease-in-out infinite reverse;
}
@keyframes glowFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-30px)}}
.hero-skyline{position:absolute;bottom:0;left:0;width:100%;height:auto;opacity:.9}
.crane-cable{animation:cable 5s ease-in-out infinite}
.crane-load{animation:load 5s ease-in-out infinite}
@keyframes cable{0%,100%{transform:translateY(0)}50%{transform:translateY(26px)}}
@keyframes load{0%,100%{transform:translateY(0)}50%{transform:translateY(26px)}}

.hero-content{position:relative;z-index:2}
.eyebrow,.hero-eyebrow{
  display:flex;align-items:center;gap:12px;
  font-size:.8rem;font-weight:600;letter-spacing:.22em;text-transform:uppercase;
  color:var(--amber);margin-bottom:20px;
}
.eyebrow-line{display:inline-block;width:44px;height:2px;background:var(--amber);border-radius:2px;flex:none}
.hero-title{
  font-family:var(--font-display);
  font-size:clamp(2.4rem,5.6vw,4.3rem);
  font-weight:800;line-height:1.08;letter-spacing:-.015em;
  margin-bottom:26px;
}
.hero-title span{display:block}
.hero-title em{
  font-style:normal;color:var(--amber);position:relative;white-space:nowrap;
}
.hero-title em::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:.28em;
  background:var(--amber-dim);z-index:-1;border-radius:4px;
  transform:scaleX(0);transform-origin:left;
  animation:underline 1s var(--ease) 1.6s forwards;
}
@keyframes underline{to{transform:scaleX(1)}}
.hero-sub{
  max-width:640px;font-size:clamp(1rem,1.4vw,1.15rem);
  color:var(--ink-dim);margin-bottom:38px;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:64px}

.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  max-width:960px;
}
.stat{
  background:rgba(255,255,255,.035);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius);
  padding:22px 24px;
  backdrop-filter:blur(6px);
  transition:transform .3s var(--ease),border-color .3s ease;
}
.stat:hover{transform:translateY(-6px);border-color:rgba(240,169,46,.4)}
.stat-num{
  font-family:var(--font-display);font-size:clamp(1.7rem,3vw,2.4rem);
  font-weight:800;color:var(--amber);line-height:1.1;margin-bottom:6px;
}
.stat-label{font-size:.82rem;color:var(--ink-dim);line-height:1.45}

.hero-scroll{
  position:absolute;bottom:26px;left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:8px;z-index:3;
  color:var(--ink-mute);
}
.mouse{
  width:24px;height:38px;border:2px solid var(--ink-mute);border-radius:14px;
  display:flex;justify-content:center;padding-top:7px;
}
.wheel{width:3px;height:8px;background:var(--amber);border-radius:3px;animation:wheel 1.6s ease-in-out infinite}
@keyframes wheel{0%{transform:translateY(0);opacity:1}70%{transform:translateY(10px);opacity:0}100%{opacity:0}}
.hero-scroll-text{font-size:.68rem;letter-spacing:.3em;text-transform:uppercase}

/* Animaciones de entrada del hero */
.reveal-hero{opacity:0;transform:translateY(26px);animation:heroIn .9s var(--ease) forwards}
.reveal-hero.d1{animation-delay:.55s}
.reveal-hero.d2{animation-delay:.7s}
.reveal-hero.d3{animation-delay:.85s}
.reveal-hero.d4{animation-delay:1.05s}
.reveal-hero.d5{animation-delay:1.2s}
.reveal-hero.d6{animation-delay:1.35s}
@keyframes heroIn{to{opacity:1;transform:translateY(0)}}

/* ── Secciones genéricas ───────────────────── */
.section{padding:110px 0;position:relative}
.section-dark{
  background:
    radial-gradient(90% 60% at 50% 0%,rgba(240,169,46,.05),transparent 60%),
    var(--navy-950);
}
.section-head{max-width:720px;margin-bottom:64px}
.section-title{
  font-family:var(--font-display);
  font-size:clamp(1.8rem,3.4vw,2.7rem);
  font-weight:800;line-height:1.15;letter-spacing:-.01em;
  margin-bottom:18px;
}
.accent{color:var(--amber)}
.section-lead{color:var(--ink-dim);font-size:1.06rem}

/* Reveal on scroll */
.reveal{opacity:0;transform:translateY(36px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ── Nosotros / split ──────────────────────── */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:center}
.split-rev{grid-template-columns:.95fr 1.05fr}
.split-text p{color:var(--ink-dim);margin-bottom:18px}
.split-text p strong{color:var(--ink)}
.philosophy{margin-top:34px;display:flex;flex-direction:column;gap:12px}
.philosophy-item{
  display:flex;align-items:center;gap:16px;
  font-family:var(--font-display);font-weight:700;font-size:1.12rem;
  padding:14px 20px;border-radius:14px;
  background:var(--amber-dim);border-left:3px solid var(--amber);
  transition:transform .3s var(--ease),background .3s ease;
}
.philosophy-item:hover{transform:translateX(8px);background:rgba(240,169,46,.2)}
.philosophy-item span{
  font-size:.75rem;color:var(--amber);letter-spacing:.15em;font-weight:800;
}
.split-cards{display:flex;flex-direction:column;gap:22px}
.mv-card{
  background:linear-gradient(150deg,var(--card),var(--navy-800));
  border:1px solid var(--card-border);
  border-radius:var(--radius);
  padding:32px;
  box-shadow:var(--shadow-lg);
  transition:transform .35s var(--ease),border-color .35s ease;
}
.mv-card:hover{transform:translateY(-8px);border-color:rgba(240,169,46,.4)}
.mv-card-alt{margin-left:34px}
.mv-icon{
  width:52px;height:52px;border-radius:14px;
  display:grid;place-items:center;margin-bottom:18px;
  background:var(--amber-dim);color:var(--amber);
}
.mv-icon svg{width:26px;height:26px}
.mv-card h3{font-family:var(--font-display);font-size:1.25rem;margin-bottom:10px}
.mv-card p{color:var(--ink-dim);font-size:.95rem}

/* ── Valores ───────────────────────────────── */
.values-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.value-card{
  background:rgba(255,255,255,.028);
  border:1px solid rgba(255,255,255,.07);
  border-radius:var(--radius);
  padding:30px 26px;
  position:relative;overflow:hidden;
  transition:transform .35s var(--ease),border-color .35s ease,background .35s ease;
}
.value-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--amber),transparent);
  transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease);
}
.value-card:hover{transform:translateY(-8px);border-color:rgba(240,169,46,.35);background:rgba(240,169,46,.05)}
.value-card:hover::before{transform:scaleX(1)}
.value-icon{
  width:50px;height:50px;border-radius:13px;margin-bottom:18px;
  display:grid;place-items:center;
  background:var(--amber-dim);color:var(--amber);
  transition:transform .35s var(--ease);
}
.value-card:hover .value-icon{transform:rotate(-6deg) scale(1.08)}
.value-icon svg{width:25px;height:25px}
.value-card h3{font-family:var(--font-display);font-size:1.08rem;margin-bottom:8px}
.value-card p{color:var(--ink-dim);font-size:.9rem}
.value-card-wide{grid-column:span 3;display:flex;align-items:center;gap:24px}
.value-card-wide .value-icon{margin-bottom:0;flex:none}
.value-card-wide h3{margin-bottom:4px}

/* ── Historia / timeline ───────────────────── */
.timeline{position:relative;max-width:860px;margin-inline:auto;padding-left:0}
.timeline-line{
  position:absolute;left:38px;top:0;bottom:0;width:3px;
  background:rgba(255,255,255,.08);border-radius:3px;overflow:hidden;
}
.timeline-line span{
  display:block;width:100%;height:0;
  background:linear-gradient(180deg,var(--amber),var(--amber-soft));
  transition:height .2s linear;
}
.tl-item{position:relative;padding-left:110px;margin-bottom:56px}
.tl-item:last-child{margin-bottom:0}
.tl-marker{
  position:absolute;left:0;top:4px;
  width:78px;height:78px;border-radius:50%;
  background:var(--navy-800);
  border:2px solid rgba(240,169,46,.35);
  display:grid;place-items:center;
  font-family:var(--font-display);font-weight:800;color:var(--amber);
  font-size:1rem;z-index:2;
  box-shadow:0 0 0 8px var(--navy-900);
  transition:transform .35s var(--ease),box-shadow .35s ease;
}
.tl-item:hover .tl-marker{transform:scale(1.08)}
.tl-marker-key{
  background:linear-gradient(135deg,var(--amber),#e08f12);
  color:var(--navy-950);border-color:var(--amber);
  box-shadow:0 0 0 8px var(--navy-900),0 0 40px rgba(240,169,46,.4);
}
.tl-card{
  background:var(--card);
  border:1px solid var(--card-border);
  border-radius:var(--radius);
  padding:30px 32px;
  transition:transform .35s var(--ease),border-color .35s ease;
}
.tl-item:hover .tl-card{transform:translateX(8px);border-color:rgba(240,169,46,.35)}
.tl-card-key{
  border-color:rgba(240,169,46,.45);
  background:linear-gradient(150deg,rgba(240,169,46,.1),var(--card) 55%);
}
.tl-tag{
  display:inline-block;font-size:.7rem;font-weight:700;
  letter-spacing:.2em;text-transform:uppercase;color:var(--amber);
  background:var(--amber-dim);padding:5px 12px;border-radius:99px;margin-bottom:14px;
}
.tl-card h3{font-family:var(--font-display);font-size:1.35rem;margin-bottom:12px}
.tl-card p{color:var(--ink-dim);font-size:.95rem;margin-bottom:12px}
.tl-card p:last-child{margin-bottom:0}
.tl-card p strong{color:var(--ink)}
.tl-note{
  border-left:3px solid var(--amber);
  padding:10px 16px;background:rgba(240,169,46,.06);
  border-radius:0 10px 10px 0;font-size:.9rem;
}

/* ── Cinta filosofía ───────────────────────── */
.ribbon{
  background:linear-gradient(90deg,#e08f12,var(--amber),#e08f12);
  padding:20px 0;overflow:hidden;white-space:nowrap;
  transform:rotate(-1.2deg) scale(1.02);
}
.ribbon-track{
  display:inline-flex;align-items:center;gap:34px;
  animation:marquee 26s linear infinite;
}
.ribbon-track span{
  font-family:var(--font-display);font-weight:800;
  font-size:1.15rem;color:var(--navy-950);letter-spacing:.02em;
}
.ribbon-track i{font-style:normal;color:rgba(7,13,22,.5);font-size:.8rem}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ── Servicios ─────────────────────────────── */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:64px}
.service-card{
  background:rgba(255,255,255,.028);
  border:1px solid rgba(255,255,255,.07);
  border-radius:var(--radius);
  padding:34px 28px;position:relative;overflow:hidden;
  transition:transform .35s var(--ease),border-color .35s ease;
}
.service-card::after{
  content:"";position:absolute;bottom:-60px;right:-60px;
  width:150px;height:150px;border-radius:50%;
  background:radial-gradient(circle,rgba(240,169,46,.14),transparent 70%);
  opacity:0;transition:opacity .4s ease;
}
.service-card:hover{transform:translateY(-8px);border-color:rgba(240,169,46,.35)}
.service-card:hover::after{opacity:1}
.service-icon{
  width:56px;height:56px;border-radius:15px;margin-bottom:20px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--amber-dim),rgba(240,169,46,.05));
  border:1px solid rgba(240,169,46,.25);color:var(--amber);
}
.service-icon svg{width:28px;height:28px}
.service-card h3{font-family:var(--font-display);font-size:1.12rem;margin-bottom:10px;line-height:1.3}
.service-card p{color:var(--ink-dim);font-size:.9rem}

.capacity{
  background:var(--card);border:1px solid var(--card-border);
  border-radius:var(--radius);padding:36px;
}
.capacity-title{
  font-family:var(--font-display);font-size:1.2rem;margin-bottom:20px;
  display:flex;align-items:center;gap:12px;
}
.capacity-title::before{content:"";width:34px;height:3px;background:var(--amber);border-radius:3px}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chips li{
  font-size:.85rem;font-weight:500;color:var(--ink-dim);
  border:1px solid rgba(255,255,255,.12);
  padding:8px 16px;border-radius:99px;
  transition:all .25s ease;cursor:default;
}
.chips li:hover{
  border-color:var(--amber);color:var(--amber);
  background:var(--amber-dim);transform:translateY(-2px);
}

/* ── Sectores ──────────────────────────────── */
.sectors-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.sector-card{
  --sc:var(--amber);
  background:var(--card);
  border:1px solid var(--card-border);
  border-radius:var(--radius);
  padding:34px 28px;position:relative;overflow:hidden;
  transition:transform .35s var(--ease),border-color .35s ease;
}
.sector-card:hover{transform:translateY(-8px);border-color:color-mix(in srgb,var(--sc) 55%,transparent)}
.sector-num{
  position:absolute;top:18px;right:22px;
  font-family:var(--font-display);font-weight:800;font-size:2.2rem;
  color:rgba(255,255,255,.05);transition:color .35s ease;
}
.sector-card:hover .sector-num{color:color-mix(in srgb,var(--sc) 30%,transparent)}
.sector-icon{
  width:54px;height:54px;border-radius:14px;margin-bottom:20px;
  display:grid;place-items:center;
  background:color-mix(in srgb,var(--sc) 14%,transparent);
  color:var(--sc);
  transition:transform .35s var(--ease);
}
.sector-card:hover .sector-icon{transform:scale(1.1) rotate(-5deg)}
.sector-icon svg{width:27px;height:27px}
.sector-card h3{font-family:var(--font-display);font-size:1.15rem;margin-bottom:8px}
.sector-card p{color:var(--ink-dim);font-size:.9rem}

/* ── Proyectos ─────────────────────────────── */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:44px}
.filter-btn{
  font-family:var(--font-body);font-size:.86rem;font-weight:600;
  color:var(--ink-dim);background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.1);
  padding:10px 20px;border-radius:99px;cursor:pointer;
  transition:all .25s ease;
}
.filter-btn:hover{color:var(--ink);border-color:rgba(240,169,46,.4)}
.filter-btn.active{
  background:var(--amber);color:var(--navy-950);
  border-color:var(--amber);font-weight:700;
  box-shadow:0 8px 22px -8px rgba(240,169,46,.55);
}
.projects-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.project-card{
  background:var(--card);
  border:1px solid var(--card-border);
  border-radius:var(--radius);overflow:hidden;
  transition:transform .35s var(--ease),border-color .35s ease,opacity .4s ease;
}
.project-card:hover{transform:translateY(-8px);border-color:rgba(240,169,46,.4)}
.project-card.hide{display:none}
.project-card[data-gallery]{cursor:pointer}
.project-photo{
  height:190px;position:relative;overflow:hidden;background:var(--navy-700);
}
.project-photo img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s var(--ease),filter .5s ease;
  filter:saturate(.92) contrast(1.02);
}
.project-card:hover .project-photo img{transform:scale(1.08);filter:saturate(1.05)}
.project-photo::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(13,27,42,.72) 100%);
  pointer-events:none;
}
.project-photo::before{
  content:"Ver galería  ⊕";
  position:absolute;top:12px;right:12px;z-index:2;
  font-size:.68rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:var(--navy-950);background:var(--amber);
  padding:6px 12px;border-radius:99px;
  opacity:0;transform:translateY(-6px);
  transition:opacity .3s ease,transform .3s var(--ease);
}
.project-card:hover .project-photo::before{opacity:1;transform:translateY(0)}
.project-visual{
  height:150px;display:grid;place-items:center;position:relative;overflow:hidden;
}
.project-visual::before{
  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:26px 26px;
}
.project-visual svg{
  width:64px;height:64px;color:rgba(255,255,255,.85);
  position:relative;z-index:1;
  transition:transform .4s var(--ease);
  filter:drop-shadow(0 6px 18px rgba(0,0,0,.35));
}
.project-card:hover .project-visual svg{transform:scale(1.15)}
.pv-salud{background:linear-gradient(135deg,#0f766e,#134e4a)}
.pv-educacion{background:linear-gradient(135deg,#1d4ed8,#1e3a8a)}
.pv-vivienda{background:linear-gradient(135deg,#b45309,#78350f)}
.pv-vial{background:linear-gradient(135deg,#6d28d9,#4c1d95)}
.pv-portuaria{background:linear-gradient(135deg,#0369a1,#0c4a6e)}
.pv-hidraulica{background:linear-gradient(135deg,#047857,#064e3b)}
.project-body{padding:24px 26px 28px}
.project-tag{
  display:inline-block;font-size:.66rem;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;
  color:var(--amber);background:var(--amber-dim);
  padding:4px 11px;border-radius:99px;margin-bottom:12px;
}
.project-body h3{font-family:var(--font-display);font-size:1.05rem;line-height:1.35;margin-bottom:8px}
.project-body p{color:var(--ink-dim);font-size:.87rem}

/* ── Métodos constructivos: mosaico ────────── */
.mosaic{
  display:grid;gap:14px;
  grid-template-columns:repeat(4,1fr);
  grid-auto-rows:190px;
}
.mosaic-item{
  position:relative;overflow:hidden;border-radius:16px;
  border:1px solid rgba(255,255,255,.08);
  padding:0;background:var(--navy-700);cursor:pointer;
  transition:transform .35s var(--ease),border-color .35s ease;
}
.mosaic-item:hover{transform:translateY(-5px);border-color:rgba(240,169,46,.45)}
.mosaic-item img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s var(--ease);
}
.mosaic-item:hover img{transform:scale(1.07)}
.m-lg{grid-column:span 2;grid-row:span 2}
.mosaic-more{
  position:absolute;inset:0;z-index:2;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  background:rgba(7,13,22,.68);backdrop-filter:blur(2px);
  font-family:var(--font-display);font-weight:800;font-size:2rem;
  color:var(--amber);line-height:1.1;
  transition:background .3s ease;
}
.mosaic-more small{font-size:.8rem;font-weight:600;color:var(--ink-dim);letter-spacing:.14em;text-transform:uppercase}
.mosaic-item:hover .mosaic-more{background:rgba(7,13,22,.5)}

/* ── Lightbox ──────────────────────────────── */
.lightbox{
  position:fixed;inset:0;z-index:950;
  background:rgba(5,9,15,.94);
  backdrop-filter:blur(8px);
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;
  transition:opacity .3s ease,visibility .3s ease;
}
.lightbox.open{opacity:1;visibility:visible}
.lb-stage{
  max-width:min(1100px,88vw);max-height:84vh;
  display:flex;flex-direction:column;gap:14px;
}
.lb-stage img{
  max-width:100%;max-height:calc(84vh - 60px);
  object-fit:contain;border-radius:14px;
  box-shadow:0 30px 80px -20px rgba(0,0,0,.8);
  transform:scale(.96);opacity:0;
  transition:transform .35s var(--ease),opacity .35s ease;
}
.lightbox.open .lb-stage img{transform:scale(1);opacity:1}
.lb-caption{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:.92rem;color:var(--ink-dim);
}
.lb-caption span:first-child{font-family:var(--font-display);font-weight:600;color:var(--ink)}
.lb-counter{
  flex:none;font-weight:700;color:var(--amber);
  background:var(--amber-dim);padding:4px 14px;border-radius:99px;font-size:.8rem;
}
.lb-close{
  position:absolute;top:22px;right:26px;z-index:5;
  width:48px;height:48px;border-radius:50%;border:0;cursor:pointer;
  background:rgba(255,255,255,.08);color:var(--ink);
  display:grid;place-items:center;
  transition:background .25s ease,transform .25s ease;
}
.lb-close:hover{background:var(--amber);color:var(--navy-950);transform:rotate(90deg)}
.lb-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:5;
  width:54px;height:54px;border-radius:50%;border:0;cursor:pointer;
  background:rgba(255,255,255,.08);color:var(--ink);
  display:grid;place-items:center;
  transition:background .25s ease,transform .25s ease;
}
.lb-arrow:hover{background:var(--amber);color:var(--navy-950)}
.lb-prev{left:26px}
.lb-next{right:26px}
.lb-prev:hover{transform:translateY(-50%) translateX(-3px)}
.lb-next:hover{transform:translateY(-50%) translateX(3px)}

/* ── Compromiso ────────────────────────────── */
.check-list{margin-top:26px;display:grid;gap:12px}
.check-list li{
  display:flex;align-items:center;gap:14px;
  color:var(--ink-dim);font-size:.98rem;
  padding:12px 18px;border-radius:12px;
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.06);
  transition:transform .25s var(--ease),border-color .25s ease;
}
.check-list li:hover{transform:translateX(6px);border-color:rgba(240,169,46,.3)}
.check-list li::before{
  content:"✓";flex:none;
  width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--amber-dim);color:var(--amber);
  font-weight:800;font-size:.8rem;
}

/* ── Clientes ──────────────────────────────── */
.clients-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:70px;
}
.client-card{
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.08);
  border-radius:14px;
  padding:26px 22px;text-align:center;
  font-family:var(--font-display);font-weight:600;font-size:1rem;
  color:var(--ink-dim);
  transition:all .3s var(--ease);
}
.client-card small{display:block;font-size:.75rem;color:var(--ink-mute);font-family:var(--font-body);margin-top:4px}
.client-card:hover{
  color:var(--white);border-color:rgba(240,169,46,.4);
  transform:translateY(-5px);background:rgba(240,169,46,.06);
}
.client-card-wide{grid-column:span 3}
.why{
  background:linear-gradient(150deg,rgba(240,169,46,.08),var(--card) 60%);
  border:1px solid rgba(240,169,46,.25);
  border-radius:var(--radius);padding:44px;
}
.why-title{
  font-family:var(--font-display);font-size:1.5rem;margin-bottom:26px;
}
.why-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.why-item{
  display:flex;align-items:center;gap:12px;
  color:var(--ink-dim);font-size:.96rem;
}
.why-item span{
  flex:none;width:24px;height:24px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--amber);color:var(--navy-950);
  font-weight:800;font-size:.72rem;
}

/* ── Contacto ──────────────────────────────── */
.contact{
  background:
    radial-gradient(80% 60% at 80% 20%,rgba(240,169,46,.07),transparent 60%),
    var(--navy-900);
}
.contact-wrap{
  display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start;
}
.contact-info p{color:var(--ink-dim);margin-bottom:30px}
.contact-points{display:flex;flex-direction:column;gap:20px}
.contact-point{
  display:flex;gap:16px;align-items:flex-start;
  color:var(--ink-dim);font-size:.94rem;
}
.contact-point strong{color:var(--ink)}
.cp-icon{
  flex:none;width:46px;height:46px;border-radius:12px;
  display:grid;place-items:center;
  background:var(--amber-dim);color:var(--amber);
}
.cp-icon svg{width:22px;height:22px}
.contact-form{
  background:var(--card);
  border:1px solid var(--card-border);
  border-radius:var(--radius);
  padding:40px;box-shadow:var(--shadow-lg);
}
.contact-form h3{font-family:var(--font-display);font-size:1.3rem;margin-bottom:24px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:18px}
.field label{
  display:block;font-size:.8rem;font-weight:600;
  color:var(--ink-dim);margin-bottom:8px;letter-spacing:.04em;
}
.field input,.field select,.field textarea{
  width:100%;font-family:var(--font-body);font-size:.94rem;
  color:var(--ink);background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.12);
  border-radius:12px;padding:13px 16px;
  transition:border-color .25s ease,box-shadow .25s ease;
  outline:none;resize:vertical;
}
.field select option{background:var(--navy-800);color:var(--ink)}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-mute)}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--amber);
  box-shadow:0 0 0 3px rgba(240,169,46,.18);
}
.form-success{
  display:none;margin-top:18px;padding:14px 18px;border-radius:12px;
  background:rgba(52,211,153,.12);border:1px solid rgba(52,211,153,.4);
  color:#6ee7b7;font-size:.9rem;font-weight:500;
}
.form-success.show{display:block;animation:heroIn .5s var(--ease)}
.form-error{
  display:none;margin-top:18px;padding:14px 18px;border-radius:12px;
  background:rgba(248,113,113,.1);border:1px solid rgba(248,113,113,.4);
  color:#fca5a5;font-size:.9rem;font-weight:500;
}
.form-error.show{display:block;animation:heroIn .5s var(--ease)}
/* Campo trampa anti-spam: fuera de pantalla, invisible para personas */
.hp-field{position:absolute!important;left:-9999px!important;width:1px;height:1px;opacity:0;pointer-events:none}
.btn[disabled]{opacity:.7;cursor:wait;transform:none!important}

/* ── Footer ────────────────────────────────── */
.footer{
  background:var(--navy-950);
  border-top:1px solid rgba(255,255,255,.06);
  padding:70px 0 30px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px;margin-bottom:50px;
}
.footer-brand p{color:var(--ink-mute);font-size:.9rem;margin-top:18px;max-width:320px}
.footer-col h4{
  font-family:var(--font-display);font-size:.85rem;
  letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink);margin-bottom:18px;
}
.footer-col a{
  display:block;color:var(--ink-mute);font-size:.9rem;
  padding:5px 0;transition:color .25s ease,transform .25s ease;
}
.footer-col a:hover{color:var(--amber);transform:translateX(4px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);
  padding-top:26px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  color:var(--ink-mute);font-size:.83rem;
}

/* ── Volver arriba ─────────────────────────── */
.back-top{
  position:fixed;bottom:28px;right:28px;z-index:700;
  width:50px;height:50px;border-radius:14px;border:0;cursor:pointer;
  background:var(--amber);color:var(--navy-950);
  display:grid;place-items:center;
  box-shadow:0 14px 30px -8px rgba(240,169,46,.55);
  opacity:0;visibility:hidden;transform:translateY(16px);
  transition:all .35s var(--ease);
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{transform:translateY(-4px)}

/* ═══════════ RESPONSIVE ═══════════ */
@media (max-width:1024px){
  .values-grid,.services-grid,.sectors-grid,.projects-grid{grid-template-columns:repeat(2,1fr)}
  .value-card-wide{grid-column:span 2}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .split,.split-rev{grid-template-columns:1fr;gap:44px}
  .mv-card-alt{margin-left:0}
  .contact-wrap{grid-template-columns:1fr;gap:44px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .clients-grid{grid-template-columns:repeat(2,1fr)}
  .client-card-wide{grid-column:span 2}
}

@media (max-width:720px){
  :root{--nav-h:66px}
  .section{padding:80px 0}
  .nav-toggle{display:flex}
  .nav-links{
    position:fixed;inset:0;z-index:10;
    background:rgba(7,13,22,.97);
    backdrop-filter:blur(16px);
    flex-direction:column;justify-content:center;gap:8px;
    opacity:0;visibility:hidden;transition:opacity .35s ease,visibility .35s ease;
  }
  .nav-links.open{opacity:1;visibility:visible}
  .nav-links a{font-size:1.3rem;padding:14px 24px}
  .nav-cta{margin-left:0;margin-top:10px}
  .nav-toggle.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
  .nav-toggle.open span:nth-child(2){opacity:0}
  .nav-toggle.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
  .brand-text small{display:none}
  .hero{padding-bottom:120px}
  .hero-actions .btn{width:100%;justify-content:center}
  .hero-stats{gap:12px}
  .stat{padding:16px 18px}
  .values-grid,.services-grid,.sectors-grid,.projects-grid,.clients-grid{grid-template-columns:1fr}
  .value-card-wide,.client-card-wide{grid-column:span 1}
  .value-card-wide{flex-direction:column;align-items:flex-start}
  .why{padding:30px 22px}
  .why-grid{grid-template-columns:1fr}
  .mosaic{grid-template-columns:repeat(2,1fr);grid-auto-rows:150px}
  .m-lg{grid-column:span 2;grid-row:span 2}
  .lb-arrow{width:44px;height:44px}
  .lb-prev{left:10px}
  .lb-next{right:10px}
  .lb-close{top:12px;right:12px}
  .timeline-line{left:26px}
  .tl-marker{width:54px;height:54px;font-size:.78rem;box-shadow:0 0 0 6px var(--navy-900)}
  .tl-item{padding-left:76px}
  .tl-card{padding:24px}
  .form-row{grid-template-columns:1fr}
  .contact-form{padding:28px 22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;text-align:center}
  .hero-scroll{display:none}
}

/* Respeto a usuarios con movimiento reducido */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal,.reveal-hero{opacity:1;transform:none}
}