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

body{
    font-family:Arial, Helvetica, sans-serif;
    background:#f5f7fb;
    color:#222;
}

.container{
    width:90%;
    max-width:1200px;
    margin:auto;
}

.navbar{
    background:#ffffff;
    box-shadow:0 2px 10px rgba(0,0,0,0.08);
    padding:20px 0;
}

.navbar .container{
    display:flex;
    justify-content:space-between;
    align-items:center;
}

.logo{
    font-size:28px;
    font-weight:bold;
    color:#2563eb;
}

nav a{
    text-decoration:none;
    margin:0 15px;
    color:#333;
    font-weight:600;
}

nav a:hover{
    color:#2563eb;
}

.login-btn{
    text-decoration:none;
    background:#2563eb;
    color:white;
    padding:10px 20px;
    border-radius:8px;
}

.hero{
    text-align:center;
    padding:100px 20px;
}

.hero h1{
    font-size:52px;
    margin-bottom:20px;
}

.hero p{
    max-width:700px;
    margin:auto;
    font-size:20px;
    color:#555;
    line-height:1.6;
}

.btn-primary{
    display:inline-block;
    margin-top:35px;
    background:#2563eb;
    color:white;
    text-decoration:none;
    padding:15px 35px;
    border-radius:10px;
    font-size:18px;
}

.features{
    padding:80px 0;
}

.features h2{
    text-align:center;
    margin-bottom:40px;
}

.cards{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:25px;
}

.card{
    background:white;
    padding:30px;
    border-radius:15px;
    box-shadow:0 5px 15px rgba(0,0,0,0.08);
}

.card h3{
    margin-bottom:15px;
}

footer{
    text-align:center;
    background:#111827;
    color:white;
    padding:30px;
    margin-top:70px;
}
@media (max-width: 768px){

.container{
    width:95%;
}

.navbar .container{
    flex-direction:column;
    gap:15px;
}

nav{
    display:flex;
    flex-direction:column;
    gap:10px;
    text-align:center;
}

.hero{
    padding:60px 20px;
}

.hero h1{
    font-size:34px;
}

.hero p{
    font-size:18px;
}

.cards{
    grid-template-columns:1fr;
}

.login-btn,
.btn-primary{
    display:block;
    width:100%;
    text-align:center;
}

}

.preview{
padding:100px 20px;
background:white;
text-align:center;
}

.preview h2{
font-size:40px;
margin-bottom:20px;
}

.preview p{
max-width:700px;
margin:0 auto 50px;
color:#666;
font-size:18px;
line-height:1.7;
}

.software-preview{
display:flex;
justify-content:center;
}

.screen{
width:900px;
max-width:100%;
background:#1e293b;
border-radius:20px;
overflow:hidden;
box-shadow:0 20px 50px rgba(0,0,0,.15);
}

.screen-header{
background:#111827;
color:white;
padding:18px;
font-size:20px;
font-weight:bold;
}

.screen-body{
display:grid;
grid-template-columns:repeat(2,1fr);
gap:20px;
padding:30px;
background:#f8fafc;
}

.box{
background:white;
padding:40px;
border-radius:15px;
font-size:22px;
font-weight:bold;
box-shadow:0 5px 20px rgba(0,0,0,.08);
}

@media(max-width:768px){

.screen-body{
grid-template-columns:1fr;
}

.preview h2{
font-size:30px;
}

}