/* ── Reset & base ─────────────────────────────────────────── */
  *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth;font-size:16px}
  body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;line-height:1.6;transition:background .3s,color .3s;overflow-x:hidden}
  img{display:block;max-width:100%}
  a{text-decoration:none}
  button{cursor:pointer;font-family:inherit}
  textarea,input{font-family:inherit}

  /* ── Design tokens: light ─────────────────────────────────── */
  :root{
    --bg:#f8f9fa;--card:#ffffff;--muted:#f1f3f5;
    --fg:#111827;--fg-muted:#6b7280;
    --border:#e5e7eb;
    --primary:#009547;--primary-fg:#ffffff;
    --secondary:#3b82f6;
    --accent:#f59e0b;
    --nav-bg:rgba(248,249,250,0.85);
    --bg-rgb:248,249,250;
  }
  /* ── Design tokens: dark ──────────────────────────────────── */
  [data-theme="dark"]{
    --bg:#0a0a0a;--card:#111111;--muted:#111111;
    --fg:#f9fafb;--fg-muted:#9ca3af;
    --border:#1f2937;
    --nav-bg:rgba(10,10,10,0.85);
    --bg-rgb:10,10,10;
  }

  /* ── Utility ──────────────────────────────────────────────── */
  body{background:var(--bg);color:var(--fg)}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 1.5rem}

  /* ── Navbar ───────────────────────────────────────────────── */
  #navbar{position:fixed;top:0;left:0;right:0;z-index:100;background:var(--nav-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:background .3s,border-color .3s}
  .nav-inner{display:flex;align-items:center;justify-content:space-between;height:80px}
  .logo-light,.logo-dark{height:40px;width:auto}
  [data-theme="light"] .logo-dark{display:none}
  [data-theme="dark"]  .logo-light{display:none}
  .nav-links{display:flex;align-items:center;gap:2rem}
  .nav-links a{font-size:.875rem;font-weight:500;color:var(--fg-muted);transition:color .2s}
  .nav-links a:hover{color:var(--fg)}
  .btn-demo{background:var(--primary);color:var(--primary-fg)!important;padding:.625rem 1.25rem;font-weight:600;transition:opacity .2s}
  .btn-demo:hover{opacity:.88}
  .btn-theme{width:36px;height:36px;border:1px solid var(--border);border-radius:50%;background:transparent;color:var(--fg-muted);display:flex;align-items:center;justify-content:center;transition:color .2s,border-color .2s}
  .btn-theme:hover{color:var(--fg);border-color:var(--primary)}
  .btn-theme svg{pointer-events:none}
  .icon-sun{display:none}.icon-moon{display:block}
  [data-theme="dark"] .icon-sun{display:block}
  [data-theme="dark"] .icon-moon{display:none}
  .btn-menu{display:none;background:transparent;border:none;color:var(--fg);padding:.5rem}
  .mobile-nav{display:none;background:var(--nav-bg);backdrop-filter:blur(12px);border-top:1px solid var(--border);padding:1rem 1.5rem}
  .mobile-nav.open{display:block}
  .mobile-nav a{display:block;padding:.6rem 0;font-size:.9rem;color:var(--fg-muted);transition:color .2s}
  .mobile-nav a:hover{color:var(--fg)}

  /* ── Hero ─────────────────────────────────────────────────── */
  #hero{position:relative;min-height:90vh;display:flex;align-items:flex-end;padding:5rem 0 6rem;overflow:hidden}
  .hero-bg{position:absolute;inset:0;z-index:0}
  .hero-bg img{width:100%;height:100%;object-fit:cover;object-position:center;opacity:.75;transition:opacity .5s}
  [data-theme="dark"] .hero-bg img{opacity:.5}
  .hero-overlay{position:absolute;inset:0;background:linear-gradient(to bottom,rgba(var(--bg-rgb),.1) 0%,rgba(var(--bg-rgb),.4) 50%,var(--bg) 100%);transition:background .3s}
  [data-theme="dark"] .hero-overlay{background:linear-gradient(to bottom,rgba(10,10,10,.5) 0%,rgba(10,10,10,.7) 50%,#0a0a0a 100%)}
  .hero-content{position:relative;z-index:1;max-width:56rem}
  .badge{display:inline-flex;align-items:center;gap:.5rem;padding:.25rem .75rem;margin-bottom:1.5rem;border:1px solid rgba(0,149,71,.35);background:rgba(0,149,71,.06);color:var(--primary);font-family:monospace;font-size:.8rem;text-transform:uppercase;letter-spacing:.1em}
  .badge-dot{width:8px;height:8px;border-radius:50%;background:var(--primary);animation:pulse 2s infinite}
  @keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
  h1{font-size:clamp(2.5rem,6vw,4.5rem);font-weight:900;line-height:1.1;letter-spacing:-.02em;margin-bottom:2rem}
  .gradient-text{background:linear-gradient(90deg,var(--primary),var(--secondary));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
  .hero-sub{font-size:clamp(1.05rem,2vw,1.25rem);color:var(--fg-muted);margin-bottom:3rem;max-width:40rem;line-height:1.7}
  .btn-group{display:flex;flex-wrap:wrap;gap:1rem}
  .btn-primary{display:inline-flex;align-items:center;justify-content:center;padding:1rem 2rem;background:var(--primary);color:var(--primary-fg);font-weight:600;font-size:.95rem;transition:opacity .2s}
  .btn-primary:hover{opacity:.88}
  .btn-secondary{display:inline-flex;align-items:center;justify-content:center;padding:1rem 2rem;background:rgba(0,0,0,.04);color:var(--fg);font-weight:600;font-size:.95rem;border:1px solid var(--border);transition:background .2s}
  [data-theme="dark"] .btn-secondary{background:rgba(255,255,255,.04)}
  .btn-secondary:hover{background:rgba(0,0,0,.08)}
  [data-theme="dark"] .btn-secondary:hover{background:rgba(255,255,255,.08)}

  /* ── Section shared ───────────────────────────────────────── */
  section{padding:6rem 0}
  h2{font-size:clamp(1.9rem,4vw,3.25rem);font-weight:800;line-height:1.15;margin-bottom:1.5rem}
  .divider{width:100%;height:1px;background:var(--border);margin:2rem 0}

  /* ── Capabilities ─────────────────────────────────────────── */
  #que-hacemos{background:var(--bg);border-top:1px solid var(--border)}
  .cap-header{max-width:38rem;margin-bottom:4rem}
  .cap-header p{color:var(--fg-muted);font-size:1.05rem;line-height:1.7}
  .cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
  .cap-card{padding:2rem;border:1px solid var(--border);background:var(--card);transition:background .2s}
  .cap-card:hover{background:var(--muted)}
  .cap-icon{width:48px;height:48px;color:var(--primary);margin-bottom:1.5rem;transition:color .2s}
  .cap-card:hover .cap-icon{color:var(--secondary)}
  .cap-card h3{font-size:1.1rem;font-weight:700;margin-bottom:.75rem;color:var(--fg)}
  .cap-card p{font-size:.875rem;color:var(--fg-muted);line-height:1.65}

  /* ── Why ──────────────────────────────────────────────────── */
  #why-us{position:relative;overflow:hidden}
  .why-bg{position:absolute;inset:0;z-index:0}
  .why-bg img{width:100%;height:100%;object-fit:cover;object-position:center}
  .why-overlay{position:absolute;inset:0;background:rgba(248,249,250,.78)}
  [data-theme="dark"] .why-overlay{background:rgba(10,10,10,.88)}
  .why-content{position:relative;z-index:1;max-width:38rem}
  .why-content h2{margin-bottom:2.5rem}
  .why-item h4{font-size:1.1rem;font-weight:700;margin-bottom:.5rem}
  .why-item p{color:var(--fg-muted);line-height:1.7}

  /* ── Social proof ─────────────────────────────────────────── */
  #social-proof{padding:5rem 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--card)}
  .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem}
  .metric{text-align:center;padding:0 1rem;border-right:1px solid var(--border)}
  .metric:last-child{border-right:none}
  .metric-value{font-family:monospace;font-size:clamp(1.75rem,3vw,2.5rem);font-weight:700;color:var(--fg);margin-bottom:.4rem}
  .metric-label{font-size:.75rem;color:var(--fg-muted);text-transform:uppercase;letter-spacing:.1em}

  /* ── About ────────────────────────────────────────────────── */
  #quienes-somos{background:var(--bg)}
  .about-grid{display:flex;align-items:center;gap:4rem}
  .about-img-wrap{flex:1;min-width:0}
  .about-img-wrap img{width:100%;height:500px;object-fit:cover;filter:grayscale(100%);border:1px solid var(--border);transition:filter .7s}
  .about-img-wrap img:hover{filter:grayscale(0%)}
  .about-text{flex:1;min-width:0}
  .about-text h2{margin-bottom:2.5rem}
  .about-item h4{font-size:1rem;font-weight:700;color:var(--primary);margin-bottom:.4rem}
  .about-item p{color:var(--fg-muted);line-height:1.7;font-size:.95rem}

  /* ── Contact ──────────────────────────────────────────────── */
  #contacto{background:var(--muted);border-top:1px solid var(--border)}
  [data-theme="dark"] #contacto{background:#000}
  .contact-inner{max-width:48rem;margin:0 auto;text-align:center}
  .contact-inner h2{font-size:clamp(2rem,5vw,3.5rem);margin-bottom:1.5rem}
  .contact-inner>p{color:var(--fg-muted);font-size:1.1rem;margin-bottom:3rem;max-width:38rem;margin-left:auto;margin-right:auto}
  .contact-badge{display:inline-flex;align-items:center;gap:.5rem;padding:.25rem .75rem;margin-bottom:2rem;border:1px solid rgba(59,130,246,.35);background:rgba(59,130,246,.06);color:var(--secondary);font-family:monospace;font-size:.8rem;text-transform:uppercase;letter-spacing:.1em}
  .badge-dot-blue{width:8px;height:8px;border-radius:50%;background:var(--secondary);animation:pulse 2s infinite}
  form{max-width:36rem;margin:0 auto;text-align:left}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1rem}
  .field{margin-bottom:1rem}
  .field label{display:block;font-size:.875rem;font-weight:500;color:var(--fg);margin-bottom:.4rem}
  .field input,.field textarea{width:100%;background:var(--bg);border:1px solid var(--border);padding:.75rem 1rem;color:var(--fg);font-size:.95rem;outline:none;transition:border-color .2s}
  .field input::placeholder,.field textarea::placeholder{color:var(--fg-muted)}
  .field input:focus,.field textarea:focus{border-color:var(--primary)}
  .field textarea{height:7rem;resize:vertical}
  .btn-submit{width:100%;background:var(--primary);color:var(--primary-fg);font-weight:600;font-size:1rem;padding:1rem;border:none;margin-top:.5rem;transition:opacity .2s;cursor:pointer}
  .btn-submit:hover{opacity:.88}

  /* ── Footer ───────────────────────────────────────────────── */
  footer{background:var(--bg);border-top:1px solid var(--border);padding:3rem 0}
  .footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1.5rem}
  .footer-nav{display:flex;gap:1.5rem}
  .footer-nav a{font-size:.875rem;color:var(--fg-muted);transition:color .2s}
  .footer-nav a:hover{color:var(--fg)}
  .footer-copy{font-size:.875rem;color:var(--fg-muted)}

  /* ── Responsive ───────────────────────────────────────────── */
  @media(max-width:900px){
    .cap-grid{grid-template-columns:repeat(2,1fr)}
    .about-grid{flex-direction:column}
    .about-img-wrap img{height:320px}
    .metrics{grid-template-columns:repeat(2,1fr)}
    .metric:nth-child(2){border-right:none}
    .metric:nth-child(3){border-right:1px solid var(--border)}
  }
  @media(max-width:640px){
    .nav-links{display:none}
    .btn-menu{display:flex}
    .cap-grid{grid-template-columns:1fr}
    .form-row{grid-template-columns:1fr}
    .metrics{grid-template-columns:repeat(2,1fr)}
    .footer-inner{flex-direction:column;text-align:center}
    .footer-nav{justify-content:center}
  }