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

.qr-code svg {
    width: auto;
    height: auto;
}

.btn,
.card {
    padding: 0.5rem;
    border-radius: 1rem;
    font-size: 1rem;
    height: 2.4rem;

    background-color: #16a34a;
    color: #ecfdf5;
    border: 2px solid #bbf7d0;

    box-shadow:
        0 0 0 2px rgba(255, 255, 255, 0.15),
        0 8px 20px rgba(0, 0, 0, 0.25);

    transition: all 0.15s ease;
}

.btn:hover {
    background-color: #22c55e;

    box-shadow:
        0 0 0 3px rgba(255, 255, 255, 0.25),
        0 0 12px rgba(34, 197, 94, 0.6),
        0 10px 24px rgba(0, 0, 0, 0.35);
}

.btn:active {
    transform: translateY(1px);
    box-shadow:
        0 0 0 2px rgba(255, 255, 255, 0.15),
        0 4px 10px rgba(0, 0, 0, 0.3);
}