:root {
  --black: #0a0a0a;
  --white: #ffffff;
  --teal: #00b4a0;
  --teal-dark: #008f7e;
  --teal-light: #e6f7f5;
  --gray-100: #f8f9fa;
  --gray-200: #e9ecef;
  --gray-600: #6c757d;
  --gray-800: #343a40;
  --shadow: 0 4px 24px rgba(0,0,0,.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,.12);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Inter',system-ui,sans-serif;color:var(--black);background:var(--white);line-height:1.6}
img{max-width:100%;height:auto}
a{color:inherit;text-decoration:none}

.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* BUTTONS */
.btn-primary{display:inline-block;background:var(--teal);color:#fff;padding:14px 32px;border-radius:8px;font-weight:700;font-size:.95rem;transition:.2s;border:none;cursor:pointer}
.btn-primary:hover{background:var(--teal-dark);transform:translateY(-1px);box-shadow:0 4px 16px rgba(0,180,160,.3)}
.btn-secondary{display:inline-block;background:transparent;color:var(--white);padding:13px 32px;border-radius:8px;font-weight:600;font-size:.95rem;border:2px solid rgba(255,255,255,.4);transition:.2s}
.btn-secondary:hover{border-color:#fff;background:rgba(255,255,255,.1)}
.btn-nav{background:var(--teal);color:#fff!important;padding:8px 20px;border-radius:6px;font-weight:700}
.btn-full{width:100%;text-align:center}

/* NAVBAR */
#navbar{position:fixed;top:0;left:0;right:0;z-index:999;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--gray-200);transition:.3s}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:70px}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:1.3rem;letter-spacing:-.02em}
.logo-mark{background:var(--teal);color:#fff;width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:1.1rem;font-weight:900;flex-shrink:0}
.nav-links{display:flex;align-items:center;gap:32px;list-style:none}
.nav-links a{font-size:.9rem;font-weight:500;color:var(--gray-800);transition:.2s}
.nav-links a:hover{color:var(--teal)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--black);border-radius:2px;transition:.3s}

/* HERO */
#hero{min-height:100vh;display:flex;align-items:center;background:var(--black);position:relative;overflow:hidden;padding:100px 0 60px}
.hero-bg{position:absolute;inset:0;background:linear-gradient(135deg,#0a0a0a 0%,#1a2a28 50%,#0a1a18 100%);opacity:.95}
.hero-bg::after{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 60% 80% at 70% 50%,rgba(0,180,160,.12),transparent)}
.hero-content{position:relative;z-index:1;max-width:700px}
.hero-badge{display:inline-block;background:rgba(0,180,160,.15);color:var(--teal);border:1px solid rgba(0,180,160,.3);padding:6px 16px;border-radius:100px;font-size:.8rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;margin-bottom:24px}
h1{font-size:clamp(2.8rem,7vw,5rem);font-weight:900;line-height:1.05;color:#fff;letter-spacing:-.03em;margin-bottom:20px}
.accent{color:var(--teal)}
.hero-sub{font-size:1.1rem;color:rgba(255,255,255,.7);margin-bottom:36px;max-width:560px;line-height:1.7}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:56px}
.hero-stats{display:flex;gap:48px}
.stat{display:flex;flex-direction:column}
.stat-n{font-size:2rem;font-weight:900;color:#fff;line-height:1}
.stat-l{font-size:.8rem;color:rgba(255,255,255,.5);font-weight:500;margin-top:4px}

/* SECTION HEADERS */
.section-header{text-align:center;max-width:600px;margin:0 auto 56px}
.section-tag{display:inline-block;background:var(--teal-light);color:var(--teal-dark);padding:4px 14px;border-radius:100px;font-size:.75rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px}
h2{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;line-height:1.15;letter-spacing:-.02em;margin-bottom:16px}
.section-header p{color:var(--gray-600);font-size:1.05rem}

/* SERVICIOS */
#servicios{padding:96px 0;background:var(--gray-100)}
.services-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.service-card{background:#fff;border-radius:16px;padding:32px 28px;transition:.25s;border:1px solid var(--gray-200)}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--teal)}
.service-icon{width:52px;height:52px;background:var(--teal-light);border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.service-icon svg{width:24px;height:24px;stroke:var(--teal)}
.service-card h3{font-size:1.1rem;font-weight:700;margin-bottom:10px}
.service-card p{color:var(--gray-600);font-size:.9rem;line-height:1.6}

/* NOSOTROS */
#nosotros{padding:96px 0}
.nosotros-inner{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.nosotros-img img{border-radius:20px;width:100%;height:480px;object-fit:cover;box-shadow:var(--shadow-lg)}
.nosotros-content .section-tag{margin-bottom:16px}
.nosotros-content h2{margin-bottom:20px}
.nosotros-content p{color:var(--gray-600);margin-bottom:16px;line-height:1.7}
.certs{display:flex;flex-direction:column;gap:10px;margin:28px 0 32px}
.cert{display:flex;align-items:center;gap:10px;font-size:.9rem;font-weight:500}
.cert span{color:var(--teal);font-weight:700;font-size:1.1rem}

/* PROYECTOS */
#proyectos{padding:96px 0;background:var(--gray-100)}
.projects-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:48px}
.project-card{position:relative;border-radius:16px;overflow:hidden;aspect-ratio:4/3}
.project-card img{width:100%;height:100%;object-fit:cover;transition:.4s}
.project-card:hover img{transform:scale(1.05)}
.project-label{position:absolute;bottom:0;left:0;right:0;padding:20px 20px 16px;background:linear-gradient(transparent,rgba(0,0,0,.8));color:#fff;font-weight:700;font-size:.9rem}
.projects-cta{text-align:center}

/* CONTACTO */
#contacto{padding:96px 0}
.contacto-inner{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.contacto-info h2{margin-bottom:16px}
.contacto-info>p{color:var(--gray-600);margin-bottom:36px;line-height:1.7}
.contact-items{display:flex;flex-direction:column;gap:20px}
.contact-item{display:flex;gap:16px;align-items:flex-start}
.contact-item svg{width:22px;height:22px;stroke:var(--teal);flex-shrink:0;margin-top:2px}
.contact-item strong{display:block;font-weight:700;font-size:.95rem}
.contact-item span{color:var(--gray-600);font-size:.9rem}
.contacto-form{background:var(--gray-100);border-radius:20px;padding:40px}
.contacto-form h3{font-size:1.3rem;font-weight:800;margin-bottom:24px}
.form-group{margin-bottom:16px}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px 16px;border:1.5px solid var(--gray-200);border-radius:10px;font-family:inherit;font-size:.9rem;transition:.2s;background:#fff}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--teal)}
.form-note{text-align:center;font-size:.8rem;color:var(--gray-600);margin-top:12px}

/* FOOTER */
footer{background:var(--black);color:rgba(255,255,255,.8);padding:64px 0 0}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand{display:flex;flex-direction:column;gap:8px}
.footer-brand .logo-mark,.footer-brand .logo-text{color:#fff}
.footer-brand p{color:rgba(255,255,255,.5);font-size:.85rem;margin-top:8px}
.footer-links{display:flex;flex-direction:column;gap:8px}
.footer-links h4{color:#fff;font-weight:700;font-size:.9rem;margin-bottom:8px}
.footer-links a{color:rgba(255,255,255,.6);font-size:.85rem;transition:.2s}
.footer-links a:hover{color:var(--teal)}
.footer-bottom{padding:20px 0;display:flex;justify-content:space-between;align-items:center}
.footer-bottom p{font-size:.8rem;color:rgba(255,255,255,.4)}
.footer-bottom a{color:var(--teal)}

/* WHATSAPP */
.wa-float{position:fixed;bottom:28px;right:28px;z-index:998;background:#25d366;color:#fff;width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 20px rgba(37,211,102,.4);transition:.25s}
.wa-float:hover{transform:scale(1.08);box-shadow:0 6px 28px rgba(37,211,102,.5)}
.wa-float svg{width:32px;height:32px}

/* RESPONSIVE */
@media(max-width:900px){
  .nosotros-inner,.contacto-inner{grid-template-columns:1fr}
  .projects-grid{grid-template-columns:repeat(2,1fr)}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .nav-links{display:none;position:fixed;inset:70px 0 0;background:#fff;flex-direction:column;padding:32px 24px;gap:20px;z-index:999}
  .nav-links.open{display:flex}
  .nav-toggle{display:flex}
  .hero-stats{gap:32px}
  .projects-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
}