#payment-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
}

#payment-modal .modal-overlay {
    background: rgba(0, 0, 0, 0.7);
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

#payment-modal .modal-content {
    background: #fff;
    width: 400px;
    padding: 30px;
    border-radius: 8px;
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    animation: fadeIn 0.3s ease-out;
}

#payment-modal .modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 24px;
    cursor: pointer;
    color: #333;
}

#payment-modal h2 {
    margin-top: 0;
    text-align: center;
    color: #333;
}

#payment-modal .form-group {
    margin-bottom: 20px;
}

#payment-modal label {
    display: block;
    margin-bottom: 5px;
    color: #666;
    font-size: 14px;
}

#payment-modal button.btn {
    width: 100%;
    padding: 12px;
    background: darkorange;
    border: none;
    color: #fff;
    font-size: 16px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s ease;
}

#payment-modal button.btn:hover {
    background: orange;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Ошибки формы */
#card-errors {
    color: red;
    margin-top: 10px;
    font-size: 14px;
}

.spinner {
    border: 2px solid #f3f3f3; /* Светло-серый */
    border-top: 2px solid #3498db; /* Синий */
    border-radius: 50%;
    width: 14px;
    height: 14px;
    animation: spin 1s linear infinite;
    display: inline-block;
    vertical-align: middle;
    margin-right: 5px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}