.upi-payment-wrapper {
    max-width: 600px;
    margin: 30px auto;
    padding: 0 15px;
}

.upi-payment-form {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 30px;
}

.upi-payment-form h2 {
    margin-top: 0;
    margin-bottom: 25px;
    color: #333;
    text-align: center;
    font-size: 24px;
}

.payment-step {
    display: none;
}

.payment-step.active {
    display: block;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #555;
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    box-sizing: border-box;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: #4CAF50;
    box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.1);
}

.form-text {
    display: block;
    margin-top: 5px;
    font-size: 12px;
    color: #666;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
    display: inline-block;
}

.btn-primary {
    background: #4CAF50;
    color: white;
    width: 100%;
}

.btn-primary:hover {
    background: #45a049;
}

.btn-success {
    background: #2196F3;
    color: white;
    margin-right: 10px;
}

.btn-success:hover {
    background: #0b7dda;
}

.btn-secondary {
    background: #757575;
    color: white;
}

.btn-secondary:hover {
    background: #616161;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.qr-code-section {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 8px;
}

.qr-code-section h3 {
    margin-top: 0;
    margin-bottom: 20px;
    color: #333;
    font-size: 18px;
}

#qr-code-container {
    margin: 20px auto;
    padding: 15px;
    background: white;
    border-radius: 8px;
    display: inline-block;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

#qr-code-image {
    max-width: 300px;
    height: auto;
    display: block;
}

.payment-info {
    margin: 10px 0;
    font-size: 16px;
    color: #555;
}

.payment-info strong {
    color: #333;
}

.utr-section {
    margin-top: 25px;
}

#upi-messages {
    margin-bottom: 20px;
}

.message {
    padding: 12px 15px;
    border-radius: 4px;
    margin-bottom: 15px;
    font-size: 14px;
}

.message-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.message-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.message-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Loading state */
.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.6;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #4CAF50;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Responsive design */
@media (max-width: 768px) {
    .upi-payment-form {
        padding: 20px;
    }
    
    .upi-payment-form h2 {
        font-size: 20px;
    }
    
    #qr-code-image {
        max-width: 250px;
    }
    
    .btn-success {
        margin-right: 0;
        margin-bottom: 10px;
        width: 100%;
    }
    
    .btn-secondary {
        width: 100%;
    }
}