body {
margin: 0;
font-family: Arial, sans-serif;
background: #0f172a;
color: white;
}

.container {
width: 90%;
max-width: 1100px;
margin: auto;
}

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

header {
border-bottom: 1px solid #333;
padding: 15px 0;
}

nav a {
margin-left: 20px;
color: #ccc;
text-decoration: none;
}

.hero {
padding: 60px 0;
}

.grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 30px;
}

.grid-3 {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 20px;
}

.grid-4 {
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 20px;
}

.box {
background: #1e293b;
padding: 20px;
border-radius: 10px;
}

.card {
background: #1e293b;
padding: 20px;
border-radius: 10px;
}

.section {
padding: 60px 0;
}

.dark {
background: #020617;
}

.btn {
display: inline-block;
margin-top: 20px;
padding: 10px 20px;
background: #22c55e;
color: black;
text-decoration: none;
border-radius: 5px;
}

.form input,
.form textarea {
width: 100%;
margin-bottom: 10px;
padding: 10px;
border: none;
border-radius: 5px;
}

.form button {
padding: 10px;
background: #3b82f6;
color: white;
border: none;
width: 100%;
border-radius: 5px;
}

footer {
text-align: center;
padding: 20px;
border-top: 1px solid #333;
}