.crypto-swap-box {
    max-width: 500px;
    margin: 30px auto;
    padding: 20px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    background: #fff;
    font-family: Arial, sans-serif;
}
.crypto-swap-box h3 {
    margin-bottom: 20px;
    text-align: center;
}
.crypto-swap-box select,
.crypto-swap-box input {
    width: 100%;
    padding: 12px 15px !important; /* increased padding */
    margin-bottom: 20px; /* increased margin */
    font-size: 18px !important; /* slightly larger font */
    line-height: 2 !important; /* increased line-height */
    height: auto !important; /* auto height to fit content */
    border: 1px solid #ddd !important;
    border-radius: 12px !important; /* more rounded */
    box-shadow: none !important;
    background: #fff !important;
    outline: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}
.crypto-swap-box .exchange-button {
    background-color: #6f4ef2;
    color: white;
    border: none;
    padding: 15px 0;
    font-size: 20px;
    border-radius: 12px;
    width: 100%;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.crypto-swap-box .exchange-button:hover {
    background-color: #593bd1;
}
.crypto-swap-box .coin-symbols {
    display: flex;
    align-items: center;
    gap: 10px;
}
.crypto-swap-box .coin-symbols img {
    width: 28px;
    height: 28px;
    vertical-align: middle;
}
#swap_result, #qr_code, #waiting_spinner {
    margin-top: 20px;
    text-align: center;
}