/* SAS ANGOLA — estilo base */
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:Inter, Arial, sans-serif;color:#222;line-height:1.6;background:#f5f6f8}
.container{max-width:1140px;margin:0 auto;padding:36px 16px}
.site-header{background:#0c3d58;color:#fff;position:sticky;top:0;z-index:1000}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 16px}
.logo img{height:52px}
.main-nav a{color:#fff;margin:0 12px;text-decoration:none;font-weight:600}
.header-cta{display:flex;align-items:center;gap:12px}
.cta{background:#eb6316;color:#fff;padding:8px 14px;border-radius:6px;text-decoration:none}
.mobile-toggle{display:none;background:transparent;border:0;color:#fff;font-size:22px}

/* hero */
.hero{position:relative;height:62vh;min-height:380px;overflow:hidden}
.slide{position:absolute;inset:0;background-size:cover;background-position:center;display:none;align-items:center}
.slide.active{display:flex}
.slide-content{background:rgba(0,0,0,0.45);color:#fff;padding:28px;border-radius:8px;margin-left:40px;max-width:640px}
.slider-controls{position:absolute;bottom:18px;right:18px}
.slider-controls button{background:rgba(255,255,255,0.9);border:0;padding:8px 12px;border-radius:6px}

/* secções */
h2{margin-bottom:18px;font-size:30px;color:#0c3d58}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{padding:18px;border-radius:8px;background:#fff;box-shadow:0 6px 18px rgba(11,13,16,0.04)}
.project img{width:100%;height:190px;object-fit:cover;border-radius:6px}

/* contacto */
.contact-grid{display:grid;grid-template-columns:1fr 320px;gap:24px}
.contact-form label{display:block;margin-bottom:10px}
.contact-form input,.contact-form textarea{width:100%;padding:10px;border-radius:6px;border:1px solid #ccc}
.btn{display:inline-block;padding:10px 16px;border-radius:6px;text-decoration:none;border:0;background:#0c3d58;color:#fff;cursor:pointer}

/* footer */
.site-footer{background:#0c3d58;color:#fff;padding:24px}
.footer-inner{display:flex;justify-content:space-between;align-items:center}
.footer-col a{color:#fff;text-decoration:underline}

/* responsivo */
@media (max-width:900px){
  .grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
}
@media (max-width:600px){
  .main-nav{display:none}
  .mobile-toggle{display:block}
  .grid{grid-template-columns:1fr}
  .slide-content{margin-left:16px;padding:18px}
}