:root {
    --red: #CC1212;
    --red-dark: #991010;
    --red-light: #E53935;
    --black: #0F0707;
    --black-soft: #1A0A0A;
    --white: #FFFFFF;
    --gray-100: #F7F7F7;
    --gray-200: #EBEBEB;
    --gray-500: #888;
    --transition: 0.3s cubic-bezier(.4,0,.2,1);
  }

  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body { font-family: 'Barlow', sans-serif; background: var(--white); color: var(--black); overflow-x: hidden; }

  /* ── NAV ── */
  nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 48px; height: 68px;
    background: rgba(15,7,7,0.97);
    backdrop-filter: blur(12px);
    border-bottom: 2px solid var(--red);
  }
  .nav-logo img { height: 40px; display: block; background: white; padding: 4px 10px; border-radius: 4px; }
  .nav-links { display: flex; gap: 36px; list-style: none; }
  .nav-links a {
    color: #ccc; text-decoration: none;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 14px; font-weight: 600; letter-spacing: 1.5px; text-transform: uppercase;
    transition: color var(--transition);
  }
  .nav-links a:hover { color: var(--red-light); }
  .nav-cta {
    background: var(--red); color: white !important;
    padding: 7px 20px; border-radius: 2px;
    transition: background var(--transition) !important;
  }
  .nav-cta:hover { background: var(--red-dark) !important; }

  /* ── HERO ── */
  .hero {
    min-height: 100vh;
    display: flex; align-items: center;
    padding: 120px 48px 80px;
    position: relative; overflow: hidden;
    background-image: url('hero_collage.jpg');
    background-size: cover;
    background-position: center;
  }
  .hero::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(
      135deg,
      rgba(10,4,4,0.88) 0%,
      rgba(10,4,4,0.82) 40%,
      rgba(20,8,8,0.06) 75%,
      rgba(10,4,4,0.80) 100%
    );
    pointer-events: none;
  }
  .hero::after {
    content: ''; position: absolute; left: 0; top: 0; bottom: 0;
    width: 5px; background: var(--red);
  }
  .hero-content { max-width: 640px; position: relative; z-index: 2; }
  .hero-label {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 11px; font-weight: 700; letter-spacing: 4px;
    text-transform: uppercase; color: var(--red-light); margin-bottom: 20px;
  }
  .hero-title {
    text-shadow: 0 2px 20px rgba(0,0,0,0.8);
    font-family: 'Barlow Condensed', sans-serif;
    font-size: clamp(52px, 8vw, 92px);
    font-weight: 900; line-height: 0.92; color: var(--white);
    text-transform: uppercase; margin-bottom: 12px;
  }
  .hero-title span { color: var(--red); display: block; }
  .hero-sub {
    text-shadow: 0 1px 8px rgba(0,0,0,0.7);
    font-size: 17px; font-weight: 300; color: #BDBDBD;
    line-height: 1.65; margin-bottom: 48px; max-width: 460px;
  }
  .hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
  .hero-deco { display: none; }
  .hero-deco-circle { display: none; }
  .hero-deco-ring { display: none; }

  /* ── BUTTONS ── */
  .btn {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 14px 28px;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 14px; font-weight: 700; letter-spacing: 1px;
    text-transform: uppercase; text-decoration: none;
    border-radius: 2px; transition: all var(--transition);
    cursor: pointer; border: none;
  }
  .btn-whatsapp {
    background: #25D366; color: white;
    box-shadow: 0 4px 20px rgba(37,211,102,0.3);
  }
  .btn-whatsapp:hover {
    background: #1DAD56;
    box-shadow: 0 4px 28px rgba(37,211,102,0.5);
    transform: translateY(-2px);
  }
  .btn-email {
    background: transparent; color: white;
    border: 2px solid rgba(255,255,255,0.25);
  }
  .btn-email:hover {
    border-color: var(--red-light); color: var(--red-light);
    transform: translateY(-2px);
  }
  .btn-primary {
    background: var(--red); color: white;
    box-shadow: 0 4px 24px rgba(204,18,18,0.35);
  }
  .btn-primary:hover {
    background: var(--red-dark);
    box-shadow: 0 4px 32px rgba(204,18,18,0.55);
    transform: translateY(-2px);
  }

  /* ── STATS BAR ── */
  .stats-bar {
    background: var(--red); padding: 28px 48px;
    display: flex; justify-content: center; gap: 80px; flex-wrap: wrap;
  }
  .stat { text-align: center; color: white; }
  .stat-num {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 52px; font-weight: 900; line-height: 1;
  }
  .stat-label {
    font-size: 11px; font-weight: 400; letter-spacing: 1.5px;
    text-transform: uppercase; opacity: 0.85; margin-top: 4px;
  }

  /* ── SECTIONS ── */
  .section { padding: 100px 48px; }
  .section-dark { background: var(--black); color: white; }
  .section-gray { background: var(--gray-100); }

  .section-header { margin-bottom: 56px; }
  .section-eyebrow {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 11px; font-weight: 700; letter-spacing: 4px;
    text-transform: uppercase; color: var(--red); margin-bottom: 12px; display: block;
  }
  .section-eyebrow-light { color: #E57373; }
  .section-title {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: clamp(34px, 5vw, 54px);
    font-weight: 900; text-transform: uppercase; line-height: 1;
  }
  .section-title.white { color: white; }
  .section-line { width: 56px; height: 4px; background: var(--red); margin-top: 20px; }

  /* ── SERVICES ── */
  .services-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2px;
  }
  .service-card {
    background: white; padding: 40px 36px;
    border-left: 5px solid var(--red);
    transition: all var(--transition); position: relative;
  }
  .service-card:hover { transform: translateY(-4px); box-shadow: 0 16px 48px rgba(0,0,0,0.12); }
  .service-num {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 54px; font-weight: 900; color: var(--gray-200); line-height: 1; margin-bottom: 8px;
  }
  .service-title {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 21px; font-weight: 700; text-transform: uppercase; color: var(--black); margin-bottom: 12px;
  }
  .service-desc { font-size: 14px; color: var(--gray-500); line-height: 1.7; }

  /* ── GALLERY ── */
  .gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
  }
  .gallery-grid-wide {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
    margin-top: 4px;
  }
  .gallery-item {
    aspect-ratio: 4/3; overflow: hidden;
    position: relative; cursor: pointer;
  }
  .gallery-item.tall { aspect-ratio: 3/4; }
  .gallery-item img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.5s ease; display: block;
  }
  .gallery-item:hover img { transform: scale(1.07); }
  .gallery-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(15,7,7,0.88) 0%, transparent 55%);
    opacity: 0; transition: opacity var(--transition);
    display: flex; align-items: flex-end; padding: 18px;
  }
  .gallery-item:hover .gallery-overlay { opacity: 1; }
  .gallery-label {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 13px; font-weight: 600; letter-spacing: 0.5px;
    text-transform: uppercase; color: white;
  }

  /* ── CLIENTS ── */
  .clients-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px;
  }
  .client-chip {
    padding: 14px 20px; border: 1px solid var(--gray-200);
    font-size: 13px; font-weight: 500; color: #444;
    border-left: 4px solid var(--red); background: white;
    transition: all var(--transition);
  }
  .client-chip:hover { background: var(--red); color: white; border-color: var(--red); transform: translateX(4px); }
  .client-chip.featured { background: #FFF5F5; border-color: var(--red); color: var(--red-dark); font-weight: 700; }

  /* ── SOSTENIBILIDAD ── */
  .sost-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
  .sost-pillars { display: flex; flex-direction: column; gap: 16px; margin-top: 28px; }
  .pillar {
    display: flex; align-items: flex-start; gap: 16px;
    padding: 18px 22px; background: rgba(204,18,18,0.05);
    border-left: 4px solid var(--red);
  }
  .pillar-icon { font-size: 22px; flex-shrink: 0; margin-top: 2px; }
  .pillar-title {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 15px; font-weight: 700; text-transform: uppercase;
    color: var(--red-dark); margin-bottom: 4px;
  }
  .pillar-desc { font-size: 13px; color: #666; line-height: 1.6; }

  .achesa-card {
    background: #0A1A0A; color: white;
    padding: 48px 40px; text-align: center;
    position: relative; overflow: hidden; border-radius: 2px;
    border-top: 5px solid #4CAF50;
    border-bottom: 5px solid #4CAF50;
  }
  .achesa-eyebrow {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 11px; font-weight: 700; letter-spacing: 4px;
    text-transform: uppercase; color: #81C784; margin-bottom: 24px;
  }
  .achesa-logo-wrap {
    background: white; display: inline-block;
    padding: 16px 28px; border-radius: 4px; margin-bottom: 24px;
    box-shadow: 0 4px 24px rgba(76,175,80,0.3);
  }
  .achesa-logo-img { display: block; height: 52px; width: auto; }
  .achesa-desc { font-size: 14px; color: #90A890; line-height: 1.75; }

  /* ── CONTACTO ── */
  .contact-section {
    background: var(--black); padding: 100px 48px; text-align: center;
    position: relative; overflow: hidden;
  }
  .contact-section::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at 50% 100%, rgba(204,18,18,0.2) 0%, transparent 60%);
    pointer-events: none;
  }
  .contact-title {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: clamp(48px, 8vw, 88px);
    font-weight: 900; text-transform: uppercase; color: white;
    line-height: 1; margin-bottom: 12px; position: relative;
  }
  .contact-sub { font-size: 17px; color: #BDBDBD; font-weight: 300; margin-bottom: 52px; position: relative; }
  .contact-btns { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; position: relative; }
  .contact-detail { margin-top: 48px; font-size: 12px; color: #444; position: relative; }

  /* ── FOOTER ── */
  footer {
    background: var(--black); border-top: 1px solid #1f0f0f;
    padding: 24px 48px;
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
  }
  footer img { height: 36px; background: white; padding: 4px 10px; border-radius: 4px; }
  .footer-copy { font-size: 12px; color: #444; }

  /* ── SCROLL ANIMATIONS ── */
  .reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.65s ease, transform 0.65s ease; }
  .reveal.visible { opacity: 1; transform: translateY(0); }

  /* ── RESPONSIVE ── */
  @media (max-width: 768px) {
    nav { padding: 0 20px; }
    .nav-links { display: none; }
    .hero { padding: 100px 24px 60px; }
    .hero-deco { display: none; }
    .section { padding: 70px 24px; }
    .stats-bar { padding: 24px 20px; gap: 32px; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .gallery-grid-wide { grid-template-columns: repeat(2, 1fr); }
    .sost-grid { grid-template-columns: 1fr; }
    .contact-section { padding: 70px 24px; }
    footer { padding: 20px 24px; }
  }

  /* ── VER MÁS BUTTON ── */
  .btn-ver-mas {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 14px 36px;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 15px; font-weight: 700; letter-spacing: 1.5px;
    text-transform: uppercase;
    background: transparent;
    color: white;
    border: 2px solid rgba(204,18,18,0.6);
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
  }
  .btn-ver-mas:hover {
    background: var(--red);
    border-color: var(--red);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(204,18,18,0.4);
  }