.bitbank-dialog {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 0;
    border-radius: 10px;
    padding: 28px 32px;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.35);
    background: #fff;
    color: #1a1f36;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    box-sizing: border-box;
    width: auto;
}

.bitbank-dialog::backdrop {
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(2px);
}

.bitbank-dialog--medium {
    width: min(640px, calc(100vw - 32px));
}

.bitbank-dialog--large {
    width: min(960px, calc(100vw - 32px));
    min-height: min(560px, calc(100vh - 64px));
}

.bitbank-dialog__close-icon {
    position: absolute;
    top: 10px;
    right: 12px;
    background: transparent;
    border: 0;
    padding: 6px;
    cursor: pointer;
    color: #4a5568;
    line-height: 0;
    border-radius: 50%;
    transition: background 0.15s ease;
}

.bitbank-dialog__close-icon:hover,
.bitbank-dialog__close-icon:focus {
    background: rgba(0, 0, 0, 0.07);
    outline: none;
}

.bitbank-dialog__close-icon .material-icons {
    font-size: 26px;
}

.bitbank-dialog .mdl-dialog__title {
    margin-top: 0;
    padding-right: 36px;
}

.bitbank-pricing-options {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    justify-content: center;
    margin: 24px 0;
}

.bitbank-pricing-option {
    flex: 1 1 220px;
    max-width: 320px;
    padding: 22px;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    background: #fafbfd;
    text-align: center;
}

.bitbank-pricing-option h3 {
    margin: 0 0 8px;
}

.bitbank-pricing-option .price {
    font-size: 22px;
    font-weight: 600;
    margin: 4px 0 14px;
}

@media (max-width: 720px) {
    .bitbank-dialog {
        padding: 22px 18px;
    }
    .bitbank-dialog--large,
    .bitbank-dialog--medium {
        width: calc(100vw - 16px);
    }
}