body{
margin:0;
font-family:Arial;
background:#f4f6ff;
color:#333;
transition:0.3s;
}

header{
display:flex;
justify-content:space-between;
align-items:center;
padding:20px 8%;
background:white;
box-shadow:0 3px 10px rgba(0,0,0,0.05);
}

.logo{
font-weight:bold;
font-size:20px;
color:#5a6cff;
}

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

#darkToggle{
border:none;
background:none;
font-size:20px;
cursor:pointer;
}

.hero{
display:flex;
justify-content:space-between;
align-items:center;
padding:100px 8%;
background:linear-gradient(135deg,#5a6cff,#9f6bff);
color:white;
}

.hero h1{
font-size:48px;
}

.hero p{
max-width:400px;
}

.download-btn{
display:inline-block;
margin-top:25px;
background:white;
color:#5a6cff;
padding:12px 25px;
border-radius:8px;
text-decoration:none;
font-weight:bold;
}

.phone{
width:230px;
height:440px;
background:black;
border-radius:30px;
padding:15px;
}

.screen{
background:white;
height:100%;
border-radius:20px;
padding:20px;
}

.features{
padding:80px 8%;
text-align:center;
}

.feature-grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
gap:30px;
margin-top:40px;
}

.feature{
background:white;
padding:25px;
border-radius:10px;
box-shadow:0 10px 20px rgba(0,0,0,0.05);
}

.screenshots{
padding:80px;
text-align:center;
background:#eef1ff;
}

.slider{
position:relative;
max-width:300px;
margin:auto;
}

.slide{
display:none;
width:100%;
border-radius:10px;
}

.slide.active{
display:block;
}

.download{
padding:80px;
text-align:center;
background:#5a6cff;
color:white;
}

footer{
background:#111;
color:white;
text-align:center;
padding:30px;
}

footer a{
color:#5a6cff;
text-decoration:none;
}

.dark{
background:#121212;
color:white;
}

.dark header{
background:#1e1e1e;
}

.dark .feature{
background:#1e1e1e;
}

.dark .screenshots{
background:#181818;
}