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

body {
    min-height: 100dvh;
    background: linear-gradient(135deg, #0f172a, #1e293b);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    padding: 20px;
}

.card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(15px);
    border-radius: 20px;
    padding: 50px 30px;
    text-align: center;
    width: 350px;
    max-width: 100%;
    box-shadow: 0 10px 40px rgba(0,0,0,0.4);
    border: 1px solid rgba(255,255,255,0.1);
}

h1 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 10px;
}

p {
    color: #cbd5f5;
    font-size: 14px;
    margin-bottom: 25px;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 8px;
    background: white;
    color: black;
    text-decoration: none;
    font-weight: 500;
    transition: 0.3s;
}

.btn:hover {
    background: #e5e7eb;
}