:root{
  --navy:#0d1f38;
  --amber:#e8922a;
  --border:#e5e5e5;
  --gray:#6b6b6b;
}

*{
  box-sizing:border-box;
  margin:0;
  padding:0;
}

body{
  font-family:sans-serif;
}

/* NAV */
nav{
  height:70px;
  padding:0 40px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  border-bottom:1px solid var(--border);
}

.nav-links{
  display:flex;
  gap:20px;
}

.nav-links a{
  text-decoration:none;
  color:#444;
}

.nav-cta{
  background:var(--navy);
  color:#fff;
  padding:10px 18px;
  border-radius:6px;
}

/* PRODUCT (2 COLUMNAS) */
.product{
  max-width:1100px;
  margin:60px auto;
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:60px;
  padding:0 40px;
}

/* IMAGE */
.product-img{
  border:1px solid var(--border);
  border-radius:12px;
  padding:20px;
}

.product-img img{
  width:100%;
}

/* INFO */
.product-info h1{
  font-size:28px;
  margin-bottom:10px;
}

.product-desc{
  color:var(--gray);
  margin-bottom:20px;
}

.bullets{
  margin-bottom:20px;
  padding-left:18px;
}

.bullets li{
  margin-bottom:6px;
}

/* BUY BOX */
.buy-box{
  border:1px solid var(--border);
  padding:20px;
  border-radius:10px;
  margin-bottom:20px;
}

.price{
  font-weight:800;
  margin-bottom:10px;
}

.btn-buy{
  width:100%;
  background:var(--amber);
  color:#fff;
  padding:12px;
  border:none;
  margin-bottom:10px;
}

.btn-cart{
  width:100%;
  background:#ffd814;
  padding:12px;
  border:none;
}

/* SPECS INLINE */
.specs-inline{
  display:grid;
  gap:8px;
}

.spec-item{
  display:flex;
  justify-content:space-between;
  border-bottom:1px solid var(--border);
  padding-bottom:5px;
}

/* MOBILE */
@media(max-width:900px){
  .product{
    grid-template-columns:1fr;
    padding:0 20px;
  }
}