:root {
    --bg: #0f172a;
    --card-bg: #ffffff;
    --text-muted: #6b7280;
    --accent: #2563eb;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    height: 100vh;
    font-family: "Poppins", Arial, sans-serif;
    background: linear-gradient(180deg, var(--bg), #08101d);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 700px;
}

.card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.35);
    text-align: center;
}

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

h2 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--accent);
}

p {
    color: var(--text-muted);
    margin-bottom: 15px;
    line-height: 1.6;
}

a {
    color: var(--accent);
    font-weight: 600;
    text-decoration: none;
}

footer {
    margin-top: 20px;
    font-size: 14px;
    color: var(--text-muted);
}