body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #0f172a;
    color: #e2e8f0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: #020617;
    position: sticky;
    top: 0;
}

nav a {
    color: #38bdf8;
    margin-left: 15px;
    text-decoration: none;
}

section {
    padding: 60px 20px;
    max-width: 1000px;
    margin: auto;
}

.card {
    background: #1e293b;
    padding: 20px;
    margin: 15px 0;
    border-radius: 10px;
}

.grid {
    display: grid;
    gap: 20px;
}

.grid-2 {
    grid-template-columns: 1fr 1fr;
}

canvas {
    background: white;
    border-radius: 10px;
    padding: 10px;
}

footer {
    background: #020617;
    color: #94a3b8;
    text-align: center;
    padding: 15px;
}

html,
body {
    height: 100%;
    margin: 0;
}

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

main {
    flex: 1;
}