body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #0f172a;
    font-family: Arial, sans-serif;
    color: #e2e8f0;
}

.card {
    width: 460px;
    max-width: 90%;
    padding: 40px;
    background: #1e293b;
    border-radius: 16px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.3);
}

h1 {
    margin-top: 0;
    color: #38bdf8;
}

.subtitle {
    color: #94a3b8;
    margin-bottom: 30px;
}

.row {
    display: flex;
    justify-content: space-between;
    padding: 14px 0;
    border-bottom: 1px solid #334155;
}

.ok {
    color: #4ade80;
    font-weight: bold;
}

.error {
    color: #f87171;
    font-weight: bold;
}

a {
    display: inline-block;
    margin-top: 28px;
    color: #38bdf8;
    text-decoration: none;
}