/* Caba Aluminio — tema inspirado en layouts modernos de empresas de ventanas en Chile */
:root{
  --brand:#0a5fa6;      /* primario */
  --brand-dark:#083f6e; /* hover */
  --accent:#f0b429;     /* botones secundarios */
  --bg:#f8fafc;         /* fondo */
  --text:#0f172a;       /* texto */
  --muted:#475569;      /* texto secundario */
  --card:#ffffff;       /* tarjetas */
  --line:#e2e8f0;       /* líneas */
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Helvetica,Arial,sans-serif;margin:0;background:var(--bg);color:var(--text)}
img{max-width:100%;display:block}

/* Barra superior */
.topbar{background:var(--brand-dark);color:#fff;font-size:.9rem;padding:8px 16px;text-align:center}
.topbar a{color:#fff;text-decoration:none;margin:0 8px}

/* Header sticky */
.header{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--line);z-index:50}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.nav .logo{display:flex;align-items:center;gap:10px}
.nav .logo img{width:44px;height:44px;border-radius:50%;object-fit:cover}
.nav a{color:var(--text);text-decoration:none;margin-left:18px}
.nav .menu{display:flex;align-items:center}

/* Hero */
.hero{background:linear-gradient(180deg, rgba(0,0,0,.35), rgba(0,0,0,.35)), url('../assets/hero.jpg') center/cover no-repeat; color:#fff}
.hero .wrap{padding:86px 20px}
.hero h1{font-size:2.2rem;margin:0 0 10px}
.hero p{max-width:800px;margin:0 0 18px}
.actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 18px;border-radius:10px;text-decoration:none}
.btn.primary{background:var(--brand);color:#fff}
.btn.primary:hover{background:var(--brand-dark)}
.btn.secondary{background:#fff;color:var(--brand);border:1px solid #fff}
.btn.secondary:hover{background:#f1f5f9}

/* Secciones base */
.section{padding:48px 20px}
.section .wrap{max-width:1200px}
.section h2{font-size:1.8rem;margin:0 0 6px;color:var(--brand)}
.section .lead{color:var(--muted);margin:0 0 18px}

/* Cards */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:0 10px 22px rgba(0,0,0,.04);padding:18px}
.card h3{margin:0 0 8px}
.card p{color:var(--muted)}

/* Beneficios con iconos */
.benefit{display:flex;gap:14px}
.benefit img{width:42px;height:42px}

/* Galería */
.gallery img{width:100%;height:240px;object-fit:cover;border-radius:12px}

/* CTA bar */
.cta-bar{background:var(--brand);color:#fff}
.cta-bar .wrap{display:flex;gap:16px;align-items:center;justify-content:space-between;padding:24px 20px}
.cta-bar p{margin:0}

/* Contacto */
.contact{display:grid;grid-template-columns:1.2fr .8fr;gap:24px}
@media (max-width:900px){.contact{grid-template-columns:1fr}}
.form input,.form select,.form textarea{width:100%;padding:12px;margin-bottom:10px;border:1px solid var(--line);border-radius:10px}
.form button{padding:14px 18px;border:none;border-radius:10px;background:var(--brand);color:#fff;cursor:pointer}
.form button:hover{background:var(--brand-dark)}

/* Footer */
footer{background:#0b1b2a;color:#cbd5e1}
footer .wrap{padding:28px 20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
footer a{color:#93c5fd}
.copy{border-top:1px solid rgba(255,255,255,.1);text-align:center;padding:12px}

/* WhatsApp flotante */
.whatsapp{position:fixed;right:18px;bottom:18px;background:#25D366;color:#fff;border-radius:999px;padding:12px 16px;display:flex;align-items:center;gap:10px;text-decoration:none;box-shadow:0 6px 20px rgba(0,0,0,.18)}
.whatsapp img{width:22px;height:22px}