body {
    margin: 0;
    background: #0d0d0f;
    color: #fff;
    font-family: Arial, sans-serif;
}

header {
    background: #1a1a1d;
    padding: 16px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #333;
}

.logo {
    font-size: 22px;
    font-weight: bold;
    background: linear-gradient(135deg, #ff77e9, #7b2cbf);
    -webkit-background-clip: text;
    color: transparent;
}

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

nav a:hover {
    color: #fff;
}

#app {
    padding: 40px;
    max-width: 900px;
    margin: auto;
}

.card {
    background: #1a1a1d;
    padding: 20px;
    border-radius: 14px;
    border: 1px solid #333;
    margin-bottom: 20px;
}

.btn {
    display: inline-block;
    padding: 12px 20px;
    background: linear-gradient(135deg, #7b2cbf, #ff77e9);
    border-radius: 10px;
    color: white;
    text-decoration: none;
    margin-top: 10px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
}