:root{
  --navy: #061727;
  --accent: #0F62FE;
  --accent-hover: #0043CE;
  --accent-2: #4589FF;
  --accent-soft: #EDF5FF;
  --steel: #6f8ca3;
  --ink: #16232f;
  --ink-soft: #4b5c6b;
  --bg: #f6f8fa;
  --card: #ffffff;
  --line: #E2E8F0;
  --radius: 10px;
  --shadow: 0 6px 24px rgba(14,33,56,.08);
  --shadow-lg: 0 20px 60px rgba(14,33,56,.35);
  font-size: 16px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img{ max-width:100%; display:block; }
a{ color: inherit; }
h1,h2,h3{ margin:0 0 .5em; line-height:1.15; font-weight:800; letter-spacing:-.01em; }
p{ line-height:1.65; color: var(--ink-soft); margin:0 0 1em; }
ul{ margin:0; padding:0; }

/* ===== HEADER / TABS ===== */
.site-header{
  position: sticky; top:0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner{
  max-width: 1280px; margin:0 auto;
  display:flex; align-items:center; justify-content:space-between;
  padding: 12px 24px;
  gap: 20px;
}
.brand{ display:flex; align-items:center; flex-shrink:0; }
.brand-logo{ height: 137px; width:auto; }
.tabs{ display:flex; gap: 4px; flex-wrap: wrap; }
.tab-link{
  font-family: inherit; font-size: .92rem; font-weight: 600;
  color: var(--ink-soft); background: none; border: none;
  padding: 10px 16px; border-radius: 999px; cursor: pointer;
  transition: all .2s ease;
  white-space: nowrap;
}
.tab-link:hover{ color: var(--navy); background: #eef3f7; }
.tab-link.active{ color:#fff; background: var(--navy); }
.menu-toggle{ display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:8px; }
.menu-toggle span{ width:24px; height:2px; background: var(--navy); display:block; }

/* ===== TAB PANELS ===== */
.tab-panel{ display:none; animation: fadeIn .35s ease; }
.tab-panel.active{ display:block; }
@keyframes fadeIn{ from{opacity:0; transform:translateY(8px);} to{opacity:1; transform:translateY(0);} }

.kicker{
  display:inline-block; font-size:.78rem; font-weight:700; letter-spacing:.08em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 10px;
}
.kicker.light{ color: var(--accent-2); }

/* ===== HERO ===== */
.hero{
  max-width:1280px; margin: 0 auto; padding: 56px 24px 40px;
  display:grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items:center;
}
.hero-eyebrow{ color: var(--accent); font-weight:700; letter-spacing:.06em; text-transform:uppercase; font-size:.85rem; margin-bottom:14px; }
.hero-text h1{ font-size: clamp(2rem, 4vw, 2.9rem); color: var(--navy); margin-bottom: 12px; }
.hero-tagline{ font-size:1.12rem; font-weight:500; color: var(--ink-soft); line-height:1.55; margin-bottom:28px; max-width:44ch; }
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; }
.btn{
  font-family:inherit; font-size:.95rem; font-weight:700; padding: 13px 26px;
  border-radius: 8px; cursor:pointer; border:2px solid transparent; transition: all .2s ease;
}
.btn-primary{ background: var(--accent); color:#FFFFFF; box-shadow: 0 6px 18px rgba(15,98,254,.35); }
.btn-primary:hover{ background: var(--accent-hover); box-shadow: 0 8px 22px rgba(0,67,206,.45); }
.btn-outline{ background: transparent; border-color: var(--accent); color: var(--accent); }
.btn-outline:hover{ background: var(--accent); color:#fff; }

.hero-gallery{
  display:grid; grid-template-columns: 1.1fr 1fr; grid-template-rows: repeat(3, 1fr); gap:12px; height: 420px;
}
.hero-img-wrap{ position:relative; height:100%; border-radius: var(--radius); overflow:hidden; box-shadow: var(--shadow); }
.hero-img{ width:100%; height:100%; object-fit:cover; display:block; }
.hero-img-tall{ grid-row: 1 / 4; height:100%; }
.photo-badge{
  position:absolute; left:12px; bottom:12px; background: rgba(10,33,56,.82); color:#fff;
  font-size:.75rem; font-weight:700; letter-spacing:.02em; padding:6px 12px; border-radius:999px;
  backdrop-filter: blur(3px);
}

.stats-band{
  background: var(--navy); color:#fff;
  display:grid; grid-template-columns: repeat(4,1fr);
}
.stat{ padding: 30px 20px; text-align:center; border-right:1px solid rgba(255,255,255,.12); }
.stat:last-child{ border-right:none; }
.stat-num{ display:block; font-size: 2.1rem; font-weight:800; color: var(--accent-2); }
.stat-label{ font-size:.85rem; color:#c5d2dc; }

/* ===== SPLIT SECTIONS (Nosotros) ===== */
.split-section{
  max-width:1280px; margin: 0 auto; padding: 64px 24px;
  display:grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items:center;
}
.split-section.reverse .split-media{ order:2; }
.split-media img{ border-radius: var(--radius); box-shadow: var(--shadow); width:100%; height:420px; object-fit:cover; }
.split-content h2{ color: var(--navy); font-size: clamp(1.6rem,2.6vw,2.1rem); }
.split-content p strong, .section-intro p strong{ color: var(--navy); font-weight:700; }

.showcase-strip{ max-width:1280px; margin: 24px auto 0; padding: 0 24px; }
.showcase-strip .hero-img-wrap{ height:260px; box-shadow: var(--shadow); }

.specialties-grid{
  max-width:1280px; margin:28px auto 0; padding: 0 24px 8px;
  display:grid; grid-template-columns: repeat(3, 1fr); gap:18px;
}
.specialty-card{
  background: var(--card); border:1px solid var(--line); border-radius: var(--radius);
  padding: 22px 20px; display:flex; align-items:center; gap:14px;
  transition: box-shadow .2s ease, transform .2s ease;
}
.specialty-card:hover{ box-shadow: var(--shadow); transform: translateY(-2px); border-color: var(--accent); }
.specialty-icon{
  flex-shrink:0; display:inline-flex; align-items:center; justify-content:center; width:44px; height:44px;
  border-radius:10px; background: var(--accent-soft); color: var(--accent);
}
.specialty-icon svg{ width:24px; height:24px; }
.specialty-card h4{ margin:0; font-size:.9rem; color: var(--navy); font-weight:700; line-height:1.3; }

.pillars-section{ max-width:1280px; margin: 0 auto; padding: 8px 24px 24px; }
.pillars-grid{
  display:grid; grid-template-columns: repeat(auto-fit, minmax(170px,1fr)); gap:20px;
}
.pillar{
  background: var(--card); border:1px solid var(--line); border-radius: var(--radius);
  padding: 24px 18px; text-align:center; box-shadow: var(--shadow);
}
.pillar-icon{
  display:inline-flex; align-items:center; justify-content:center; width:52px; height:52px;
  border-radius:50%; background: var(--accent-soft); color: var(--accent); margin-bottom:14px;
}
.pillar-icon svg{ width:26px; height:26px; }
.pillar h4{ margin:0; font-size:.92rem; color: var(--navy); font-weight:700; }

.featured-project{
  max-width:1280px; margin: 0 auto 8px; padding: 0 24px;
  display:grid; grid-template-columns: 1.3fr 1fr; gap:0; cursor:pointer;
  border-radius: var(--radius); overflow:hidden; box-shadow: var(--shadow-lg);
}
.featured-project-img{ position:relative; height:100%; min-height:320px; }
.featured-project-img img{ width:100%; height:100%; object-fit:cover; }
.featured-project-body{
  background: var(--navy); color:#fff; padding: 36px 34px; display:flex; flex-direction:column; justify-content:center;
}
.featured-project-body h3{ color:#fff; font-size:1.5rem; }
.featured-project-body .project-meta{ color: var(--accent-2); }
.featured-project-body p:not(.project-meta){ color:#c5d2dc; }
.featured-project-body .btn{ align-self:flex-start; margin-top:10px; }

.quality-section{
  background: var(--card); border-top:1px solid var(--line);
  max-width:1280px; margin: 0 auto; padding: 64px 24px;
  display:grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items:center;
}
.quality-media{ display:grid; grid-template-columns: 1fr 1fr; gap:12px; }
.quality-media img{ border-radius: var(--radius); box-shadow: var(--shadow); height:190px; width:100%; object-fit:cover; }
.quality-content h2{ color: var(--navy); font-size: clamp(1.6rem,2.6vw,2.1rem); }
.cert-row{ display:flex; gap:12px; flex-wrap:wrap; margin-top:20px; }
.cert-badge{
  display:flex; align-items:center; gap:8px; background:#fff; border:1px solid var(--line);
  color: var(--navy); font-weight:700; font-size:.82rem; letter-spacing:.02em;
  padding: 9px 16px 9px 10px; border-radius: 999px; box-shadow: var(--shadow);
}
.cert-check{
  display:inline-flex; align-items:center; justify-content:center; width:20px; height:20px;
  border-radius:50%; background: var(--accent); color:#fff; flex-shrink:0;
}
.cert-check svg{ width:12px; height:12px; }

/* ===== PROYECTOS ===== */
.section-intro{ max-width:1280px; margin: 0 auto; padding: 56px 24px 8px; text-align:center; }
.section-intro h2{ color: var(--navy); font-size: clamp(1.7rem,3vw,2.3rem); }
.section-intro p{ max-width: 620px; margin: 0 auto; }

.project-grid{
  max-width:1280px; margin:0 auto; padding: 32px 24px 24px;
  display:grid; grid-template-columns: repeat(auto-fill, minmax(320px,1fr)); gap: 24px;
}
.empty-state{ grid-column: 1 / -1; text-align:center; color: var(--ink-soft); font-size:.95rem; padding: 20px 0; }
.project-card{
  background: var(--card); border-radius: var(--radius); overflow:hidden;
  box-shadow: var(--shadow); cursor:pointer; border:1px solid var(--line);
  transition: transform .25s ease, box-shadow .25s ease;
  display:flex; flex-direction:column;
}
.project-card:hover{ transform: translateY(-4px); box-shadow: 0 16px 36px rgba(14,33,56,.16); }
.project-card-img{ position:relative; height:210px; overflow:hidden; background:#dfe6ea; }
.project-card-img img{ width:100%; height:100%; object-fit:cover; transition: transform .4s ease; }
.project-card:hover .project-card-img img{ transform: scale(1.06); }
.project-card-count{
  position:absolute; bottom:10px; right:10px; background: rgba(14,33,56,.75); color:#fff;
  font-size:.75rem; font-weight:600; padding:4px 10px 4px 8px; border-radius:999px;
  display:inline-flex; align-items:center; gap:5px;
}
.project-card-count svg{ width:13px; height:13px; opacity:.9; }
.project-card-body{ padding: 18px 20px 20px; flex:1; display:flex; flex-direction:column; }
.project-card-body h3{ font-size:1.05rem; color: var(--navy); margin-bottom:8px; }
.project-card-body p{ font-size:.88rem; margin-bottom:0; flex:1; display:-webkit-box; -webkit-line-clamp:3; -webkit-box-orient:vertical; overflow:hidden; }

.meta-badges{ display:flex; flex-wrap:wrap; gap:6px; margin-bottom:12px; }
.meta-badge{
  display:inline-flex; align-items:center; gap:5px; background:#eef3f7; color: var(--ink-soft);
  font-size:.74rem; font-weight:600; padding:4px 10px 4px 6px; border-radius:999px;
}
.meta-badge-icon{ display:inline-flex; color: var(--accent); }
.meta-badge-icon svg{ width:13px; height:13px; }
.featured-project-body .meta-badge{ background: rgba(255,255,255,.1); color:#dce8f0; }
.featured-project-body .meta-badge-icon{ color: var(--accent-2); }

.btn-ghost{
  background: transparent; border-color: rgba(255,255,255,.5); color:#fff;
}
.btn-ghost:hover{ background: rgba(255,255,255,.12); border-color:#fff; }

.proceso-banner{
  margin: 56px 0; padding: 56px 24px; background-size: cover; background-position: center;
  color:#fff;
}
.proceso-banner-full{
  margin: 0; min-height: calc(100vh - 161px); padding: 90px 24px; display:flex; flex-direction:column; justify-content:center;
}
.proceso-banner > .kicker, .proceso-banner > h2{ max-width:1280px; margin-left:auto; margin-right:auto; display:block; }
.proceso-banner h2{ color:#fff; margin-bottom:36px; }
.proceso-list{
  max-width:1280px; margin:0 auto; display:grid; grid-template-columns: repeat(2,1fr); gap:28px 40px;
}
.proceso-item{ display:flex; gap:16px; }
.proceso-num{
  flex-shrink:0; width:44px; height:44px; border-radius:50%; background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.3);
  display:flex; align-items:center; justify-content:center; font-weight:700; color: var(--accent-2);
}
.proceso-item h4{ margin:0 0 6px; font-size:1.02rem; }
.proceso-item p{ margin:0; font-size:.88rem; color:#c5d2dc; }
.proceso-item p strong{ color: var(--accent-2); font-weight:700; }

/* ===== ALIADOS ===== */
.logo-grid{
  max-width:1280px; margin:0 auto; padding: 24px 24px 56px;
  display:grid; grid-template-columns: repeat(auto-fill, minmax(160px,1fr)); gap:18px;
  overflow: visible;
}
.logo-grid-dense{ grid-template-columns: repeat(auto-fill, minmax(130px,1fr)); }
.logo-tile{
  background:#fff; border:1px solid var(--line); border-radius: var(--radius);
  display:flex; align-items:center; justify-content:center; padding: 18px; height:110px;
  overflow:hidden; transition: box-shadow .2s ease, transform .2s ease;
}
.logo-tile:hover{ box-shadow: var(--shadow); transform: translateY(-2px); }
.logo-tile img{
  max-height:100%; max-width:100%; object-fit:contain;
  filter: grayscale(1) opacity(.75); transition: filter .25s ease;
}
.logo-tile:hover img{ filter: grayscale(0) opacity(1); }

.filters-bar{
  max-width:1280px; margin: 0 auto; padding: 0 24px 20px;
  display:flex; gap:10px; flex-wrap:wrap; justify-content:center;
}
.filter-btn{
  font-family:inherit; font-size:.85rem; font-weight:600; color: var(--ink-soft);
  background:#fff; border:1px solid var(--line); padding:9px 18px; border-radius:999px;
  cursor:pointer; transition: all .2s ease;
}
.filter-btn:hover{ border-color: var(--accent); color: var(--navy); }
.filter-btn.active{ background: var(--accent); border-color: var(--accent); color:#fff; }

/* ===== CONTACTO ===== */
.contact-hero{
  background-size:cover; background-position:center; color:#fff;
  padding: 90px 24px; min-height: 460px; display:flex; flex-direction:column; justify-content:center;
}
.contact-hero > .kicker, .contact-hero > h2, .contact-grid{ max-width:1280px; margin-left:auto; margin-right:auto; width:100%; }
.contact-hero h2{ color:#fff; font-size: clamp(1.8rem,3.4vw,2.6rem); margin-bottom:40px; }
.contact-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap:28px; }
.contact-item h3{ font-size:.85rem; text-transform:uppercase; letter-spacing:.06em; color: var(--accent-2); margin-bottom:8px; }
.contact-item p{ color:#e4ecf2; margin:0; }
.contact-item a{ text-decoration:none; }
.contact-item a:hover{ text-decoration:underline; }

.contact-channels{
  max-width:1280px; margin: 36px auto 0; width:100%;
  display:flex; gap:14px; flex-wrap:wrap;
}
.contact-channels .btn-ghost, .contact-channels .btn-whatsapp{ display:inline-flex; align-items:center; gap:9px; }
.btn-whatsapp{ background:#25D366; color:#04220f; }
.btn-whatsapp:hover{ background:#1ebe5a; }

.contact-form-section{
  max-width:1280px; margin:0 auto; padding: 56px 24px;
  display:grid; grid-template-columns: .9fr 1.1fr; gap:40px; align-items:start;
}
.contact-form-section-centered{
  grid-template-columns: 1fr; justify-items:center;
}
.contact-form-section-centered .contact-form{ width:100%; max-width:640px; }
.contact-form{
  background: var(--card); border:1px solid var(--line); border-radius: var(--radius);
  padding: 32px; box-shadow: var(--shadow);
}
.contact-form h3{ color: var(--navy); font-size:1.3rem; margin-bottom:6px; }
.form-hint{ font-size:.88rem; margin-bottom:22px; }
.form-grid{ display:grid; grid-template-columns: 1fr 1fr; gap:16px 18px; margin-bottom:22px; }
.form-field-full{ grid-column: 1 / -1; }
.form-field label{ display:block; font-size:.8rem; font-weight:700; color: var(--navy); margin-bottom:6px; }
.form-field input, .form-field textarea{
  width:100%; font-family:inherit; font-size:.92rem; color: var(--ink);
  border:1px solid var(--line); border-radius:8px; padding:10px 12px; background:#fbfcfd;
  transition: border-color .2s ease;
}
.form-field input:focus, .form-field textarea:focus{
  outline:none; border: 2px solid var(--accent); padding:9px 11px;
  box-shadow: 0 0 0 4px rgba(15,98,254,.15);
}
.form-field textarea{ resize:vertical; }

/* ===== FOOTER ===== */
.site-footer{
  background: var(--navy); color:#9db2c2; padding: 22px 24px; text-align:center;
}
.site-footer p{ margin:0; font-size:.8rem; color:#8fa4b4; }

/* ===== MODAL ===== */
.modal-overlay{
  position:fixed; inset:0; background: rgba(8,16,28,.88); z-index:1000;
  display:none; align-items:center; justify-content:center; padding: 24px;
}
.modal-overlay.open{ display:flex; }
.modal{
  background:#fff; border-radius: 14px; max-width: 920px; width:100%;
  max-height: 92vh; overflow-y:auto; box-shadow: var(--shadow-lg); position:relative;
}
.modal-close{
  position:absolute; top:14px; right:14px; z-index:5; width:36px; height:36px; border-radius:50%;
  background: rgba(14,33,56,.7); color:#fff; border:none; font-size:1.4rem; line-height:1;
  cursor:pointer; display:flex; align-items:center; justify-content:center;
}
.modal-close:hover{ background: var(--navy); }
.modal-media{ position:relative; background:#0c1a2b; height: 440px; display:flex; align-items:center; justify-content:center; }
.modal-media img{ width:100%; height:100%; object-fit:contain; }
.modal-nav{
  position:absolute; top:50%; transform:translateY(-50%); background: rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.3); color:#fff; width:42px; height:42px; border-radius:50%;
  cursor:pointer; font-size:1rem; display:flex; align-items:center; justify-content:center;
}
.modal-nav:hover{ background: rgba(255,255,255,.28); }
.modal-prev{ left:16px; } .modal-next{ right:16px; }
.modal-thumbs{ display:flex; gap:8px; padding: 12px 20px; overflow-x:auto; background:#f2f5f7; }
.modal-thumbs img{
  width:64px; height:48px; object-fit:cover; border-radius:6px; cursor:pointer; opacity:.55;
  border:2px solid transparent; flex-shrink:0; transition: opacity .2s ease, border-color .2s ease;
}
.modal-thumbs img.active{ opacity:1; border-color: var(--accent); }
.modal-info{ padding: 22px 26px 28px; }
.modal-info h3{ color: var(--navy); font-size:1.3rem; }
.modal-meta{ font-size:.85rem; font-weight:700; color: var(--accent); margin-bottom:14px; }
.modal-desc{ margin:0; font-size:.95rem; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px){
  .hero{ grid-template-columns:1fr; padding-top:32px; }
  .hero-gallery{ height:320px; order:-1; }
  .split-section, .split-section.reverse, .quality-section{ grid-template-columns:1fr; }
  .split-section.reverse .split-media{ order:0; }
  .stats-band{ grid-template-columns: repeat(2,1fr); }
  .stat{ border-right:none; border-bottom:1px solid rgba(255,255,255,.12); }
  .proceso-list{ grid-template-columns:1fr; }
  .contact-grid{ grid-template-columns: repeat(2,1fr); }
  .quality-media{ grid-template-columns: repeat(2,1fr); }
  .featured-project{ grid-template-columns:1fr; }
  .featured-project-img{ min-height:240px; }
  .contact-form-section{ grid-template-columns:1fr; }
  .specialties-grid{ grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 720px){
  .tabs{
    position: fixed; top:161px; left:0; right:0; background:#fff; flex-direction:column;
    padding: 10px 20px 20px; border-bottom:1px solid var(--line); box-shadow: var(--shadow);
    transform: translateY(-130%); opacity:0; transition: all .25s ease; pointer-events:none;
  }
  .tabs.open{ transform: translateY(0); opacity:1; pointer-events:auto; }
  .tab-link{ text-align:left; width:100%; padding:12px 14px; }
  .menu-toggle{ display:flex; }
  .modal-media{ height:260px; }
  .contact-grid{ grid-template-columns:1fr; }
  .form-grid{ grid-template-columns:1fr; }
  .specialties-grid{ grid-template-columns:1fr; }
}