body{
margin:0;
font-family:Arial;
background:#f4f6f8;
}

/* HEADER */
header{
background:black;
padding:15px;
}

nav{
display:flex;
justify-content:space-between;
align-items:center;
max-width:1200px;
margin:auto;
}

nav ul{
display:flex;
gap:20px;
list-style:none;
}

nav a{
color:white;
text-decoration:none;
}

/* HERO SECTION WITH BACKGROUND IMAGE */
.hero{
background: url('images/bg.jpg') center/cover no-repeat;
color:white;
text-align:center;
padding:140px 20px;
position:relative;
}

/* DARK OVERLAY */
.hero::before{
content:"";
position:absolute;
top:0;
left:0;
width:100%;
height:100%;
background:rgba(0,0,0,0.55);
}

.hero h1,
.hero p,
.hero a{
position:relative;
z-index:2;
}

/* SECTION */
.section{
padding:60px 20px;
max-width:1100px;
margin:auto;
text-align:center;
}

.bg{
background:white;
}

/* GRID */
.grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
gap:25px;
}

/* CARD */
.card{
background:white;
padding:25px;
border-radius:10px;
box-shadow:0 4px 10px rgba(0,0,0,0.1);
}

/* BUTTON */
.btn{
background:#00ff84;
padding:12px 25px;
border:none;
border-radius:6px;
font-weight:bold;
cursor:pointer;
text-decoration:none;
color:black;
}

/* FORM */
form input,
form textarea{
width:100%;
padding:12px;
margin:10px 0;
border:1px solid #ddd;
border-radius:6px;
}

/* FOOTER */
footer{
background:black;
color:white;
padding:20px;
margin-top:40px;
text-align:center;
}

/* WHATSAPP BUTTON */
.whatsapp{
position:fixed;
bottom:20px;
right:20px;
background:#25D366;
color:white;
padding:12px 18px;
border-radius:50px;
text-decoration:none;
}