.donation-wrapper {
    max-width: 600px;
    margin: 0 auto;
    background: #f9f9f9;
    border: 2px solid #F5A623;
    border-radius: 16px;
    padding: 0;
    font-family: 'Arial', sans-serif;
    overflow: hidden;
}
.donation-tabs { display: flex; background: #f0f0f0; }
.tab-btn {
    flex: 1; padding: 16px; border: none; background: transparent;
    font-size: 18px; font-weight: 600; color: #F5A623; cursor: pointer;
    transition: all 0.3s;
}
.tab-btn.active { background: #ffffff; color: #F5A623; box-shadow: 0 2px 0 #F5A623; }
.amount-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin: 0;
    border-top: 1px solid #ddd; border-bottom: 1px solid #ddd;
}
.amt-btn {
    padding: 14px 8px; border: 1px solid #ddd; border-radius: 0; background: #fff;
    font-size: 16px; font-weight: 600; color: #333; cursor: pointer; transition: all 0.2s;
}
.amt-btn.active { background: #F5A623; color: #fff; border-color: #F5A623; }
.amt-btn:hover { background: #FFF3D6; }
.amt-btn.active:hover { background: #e0941f; }
.custom-amount { padding: 12px 20px; }
.custom-amount input {
    width: 100%; padding: 10px 14px; border: 2px solid #F5A623; border-radius: 8px;
    font-size: 16px; box-sizing: border-box;
}
.selected-amount-text { text-align: center; font-size: 18px; padding: 16px; margin: 0; color: #222; }
.donor-form { display: flex; flex-direction: column; gap: 10px; padding: 0 20px 12px; }
.donor-form input {
    padding: 12px 14px; border: 1px solid #ccc; border-radius: 8px; font-size: 15px;
    transition: border 0.2s;
}
.donor-form input:focus { outline: none; border-color: #F5A623; }
.next-btn {
    width: calc(100% - 40px); margin: 0 20px 16px; padding: 16px; background: #F5A623;
    color: #fff; font-size: 20px; font-weight: 700; letter-spacing: 2px; border: none;
    border-radius: 10px; cursor: pointer; transition: background 0.2s; display: block;
}
.next-btn:hover { background: #e0941f; }
.secure-checkout { text-align: center; padding: 12px; font-size: 13px; color: #666; border-top: 1px solid #eee; }
.hidden { display: none !important; }
@media (max-width: 480px) {
    .amount-grid { grid-template-columns: repeat(2, 1fr); }
    .tab-btn { font-size: 15px; padding: 12px; }
}

/* Donation success / failure page */
.donation-result {
    max-width: 600px; margin: 40px auto; padding: 30px; border-radius: 14px;
    text-align: center; font-family: Arial, sans-serif;
}
.donation-result.success {
    background: #F0FBF4; border: 2px solid #2EAD5C;
}
.donation-result h2 { margin: 0 0 10px; color: #1A2B5F; font-size: 26px; }
.donation-result p { font-size: 16px; color: #333; margin: 6px 0; }
.donation-result .txn-ref { margin-top: 16px; font-size: 14px; color: #555; }