.popup-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 9999;
    backdrop-filter: blur(5px);
    transition: all 0.3s ease;
}

.donation-popup {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: white;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    z-index: 10000;
    max-width: 500px;
    width: 90%;
    text-align: center;
    opacity: 0;
    animation: fadeIn 0.5s forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translate(-50%, -48%); }
    to { opacity: 1; transform: translate(-50%, -50%); }
}

.donation-header {
    margin-bottom: 25px;
}

.donation-header h2 {
    color: #333;
    font-size: 32px;
    font-weight: 700;
    margin: 0;
    background: linear-gradient(90deg, #5e35b1, #7b1fa2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
}

.donation-message {
    font-size: 18px;
    line-height: 1.6;
    color: #555;
    margin-bottom: 30px;
}

.donation-button {
    display: inline-block;
    padding: 15px 30px;
    background: linear-gradient(45deg, #ff3547, #ff5252);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 16px;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 53, 71, 0.3);
    border: none;
    cursor: pointer;
}

.donation-button:hover {
    background: linear-gradient(45deg, #ff5252, #ff3547);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 53, 71, 0.4);
}

.close-popup {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 30px;
    cursor: pointer;
    background: none;
    border: none;
    color: #999;
    transition: color 0.2s;
    line-height: 1;
}

.close-popup:hover {
    color: #333;
}

/* Responsividade para telas menores */
@media (max-width: 480px) {
    .donation-popup {
        padding: 30px 20px;
    }
    
    .donation-header h2 {
        font-size: 26px;
    }
    
    .donation-message {
        font-size: 16px;
    }
    
    .donation-button {
        padding: 12px 25px;
        font-size: 15px;
    }
}