*{
margin:0;
padding:0;
box-sizing:border-box;
font-family:Arial,sans-serif;
}

body{
background:#f8fafc;
}

header{
display:flex;
justify-content:space-between;
align-items:center;
padding:20px 50px;
background:white;
position:sticky;
top:0;
z-index:100;
box-shadow:0 2px 10px rgba(0,0,0,.1);
}

.logo img{
height:70px;
}

nav a{
margin:0 15px;
text-decoration:none;
color:#333;
font-weight:bold;
}

.btn-header{
background:#B45309;
color:white;
padding:12px 20px;
border-radius:30px;
text-decoration:none;
}

.hero{
height:90vh;
background:url('../img/hero.jpg') center center/cover;
display:flex;
justify-content:center;
align-items:center;
}

.overlay{
background:rgba(0,0,0,.55);
padding:50px;
text-align:center;
color:white;
width:100%;
}

.hero h1{
font-size:4rem;
}

.hero p{
margin:20px 0;
font-size:1.2rem;
}

.btn-primary,
.btn-secondary{
display:inline-block;
padding:15px 30px;
margin:10px;
text-decoration:none;
border-radius:30px;
}

.btn-primary{
background:#D97706;
color:white;
}

.btn-secondary{
background:#25D366;
color:white;
}

section{
padding:80px 10%;
}

h2{
text-align:center;
margin-bottom:40px;
font-size:2.5rem;
}

.features{
display:grid;
grid-template-columns:repeat(4,1fr);
gap:20px;
margin-top:40px;
text-align:center;
}

.features i{
font-size:40px;
color:#B45309;
}

.service-grid{
display:grid;
grid-template-columns:repeat(3,1fr);
gap:30px;
}

.card{
background:white;
padding:30px;
border-radius:12px;
box-shadow:0 5px 15px rgba(0,0,0,.1);
}

.gallery-grid{
display:grid;
grid-template-columns:repeat(2,1fr);
gap:20px;
}

.project img{
width:100%;
border-radius:12px;
}

.project span{
display:block;
text-align:center;
font-weight:bold;
margin-top:10px;
}

.contact-grid{
display:grid;
grid-template-columns:1fr 1fr;
gap:40px;
}

form{
display:flex;
flex-direction:column;
}

input,
textarea{
padding:15px;
margin-bottom:15px;
}

button{
padding:15px;
background:#B45309;
color:white;
border:none;
}

footer{
background:#1F2937;
color:white;
text-align:center;
padding:30px;
}

.whatsapp{
position:fixed;
right:25px;
bottom:25px;
background:#25D366;
width:65px;
height:65px;
border-radius:50%;
display:flex;
align-items:center;
justify-content:center;
font-size:32px;
color:white;
text-decoration:none;
}

.hidden{
    opacity:0;
    transform:translateY(50px);
    transition:all .8s ease;
}

.show{
    opacity:1;
    transform:translateY(0);
}

/* Menú activo */

nav a.active{
    color:#B45309;
    border-bottom:3px solid #B45309;
    padding-bottom:5px;
}