* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #0f172a;
    color: #e2e8f0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align:center;
    padding: 20px;
}
.container { width: 100%; max-width: 420px; }
.card {
    background: #1e293b;
    border-radius: 16px;
    padding: 32px 28px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}
h1 { font-size: 1.5rem; margin-bottom: 6px; }
.subtitle { color: #94a3b8; margin-bottom: 24px; font-size: 0.95rem;text-align: center; }
.packages { margin-bottom: 28px; }
.packages h3 { font-size: 1rem; margin-bottom: 12px; color: #38bdf8; }
.packages ul { list-style: none; }
.packages li {
    background: #0f172a;
    padding: 12px 14px;
    border-radius: 10px;
    margin-bottom: 8px;
    font-size: 0.95rem;
}
.packages li span { display: block; color: #94a3b8; font-size: 0.85rem; margin-top: 2px; }
.hint { font-size: 0.8rem; color: #64748b; margin-top: 10px; }
.voucher-form label { display: block; margin-bottom: 8px; font-size: 0.9rem; }
.voucher-form input[type="text"] {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #334155;
    border-radius: 10px;
    background: #0f172a;
    color: #f8fafc;
    font-size: 1.1rem;
    letter-spacing: 2px;
    text-align: center;
    margin-bottom: 18px;
}
.voucher-form input:focus { outline: none; border-color: #38bdf8; }
.voucher-form button {
    width: 100%;
    padding: 14px;
    background: #38bdf8;
    color: #0f172a;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
}
.voucher-form button:hover { background: #7dd3fc; }
.alert { padding: 12px; border-radius: 8px; margin-bottom: 18px; font-size: 0.9rem; }
.alert.error { background: #7f1d1d; color: #fecaca; }
.footer-note { margin-top: 24px; font-size: 0.75rem; color: #64748b; text-align: center; }
.success { text-align: center; }
.success a { color: #38bdf8; }