* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    background: linear-gradient(135deg, #1f1f1f, #3a3a3a);
    color: #fff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.card {
    text-align: center;
    max-width: 500px;
    padding: 40px;
    background: rgba(255,255,255,0.05);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.icon {
    font-size: 50px;
    margin-bottom: 20px;
}

h1 {
    font-size: 28px;
    margin-bottom: 15px;
}

p {
    color: #ddd;
    margin-bottom: 10px;
    font-size: 16px;
}

.sub {
    margin-bottom: 25px;
    font-size: 14px;
    color: #aaa;
}

.btn {
    display: inline-block;
    padding: 12px 25px;
    background: #ff9800;
    color: #fff;
    text-decoration: none;
    border-radius: 6px;
    transition: 0.3s;
}

.btn:hover {
    background: #e68900;
}

footer {
    text-align: center;
    padding: 15px;
    background: #111;
    font-size: 14px;
}