.rsvp-validator .form-group {
    margin-bottom: 15px;
    position: relative;
}

.rsvp-validator input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.rsvp-validator input:focus {
    outline: none;
    border-color: #4a90e2;
    box-shadow: 0 0 5px rgba(74, 144, 226, 0.2);
}

.rsvp-validator .validation-message {
    margin-top: 5px;
    padding: 5px;
    font-size: 14px;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.rsvp-validator .validation-message.error-message {
    color: #dc3545;
    background-color: rgba(220, 53, 69, 0.1);
    border-left: 3px solid #dc3545;
    padding-left: 10px;
}

.rsvp-validator .validation-message.success-message {
    color: #28a745;
    background-color: rgba(40, 167, 69, 0.1);
    border-left: 3px solid #28a745;
    padding-left: 10px;
}

.rsvp-validator .additional-guest-wrapper {
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.rsvp-validator .additional-guest-wrapper.shown {
    opacity: 1;
    max-height: 200px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .rsvp-validator input {
        font-size: 14px;
        padding: 8px;
    }
    
    .rsvp-validator .validation-message {
        font-size: 13px;
    }
}

/* Error state */
.rsvp-validator input.error {
    border-color: #dc3545;
    background-color: rgba(220, 53, 69, 0.05);
}

/* Success state */
.rsvp-validator input.success {
    border-color: #28a745;
    background-color: rgba(40, 167, 69, 0.05);
}

/* Disabled state */
.rsvp-validator input:disabled {
    background-color: #f8f9fa;
    cursor: not-allowed;
}

/* Loading state */
.rsvp-validator input.loading {
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="xMidYMid"><circle cx="50" cy="50" fill="none" stroke="%234a90e2" stroke-width="10" r="35" stroke-dasharray="164.93361431346415 56.97787143782138"><animateTransform attributeName="transform" type="rotate" repeatCount="indefinite" dur="1s" values="0 50 50;360 50 50" keyTimes="0;1"></animateTransform></circle></svg>');
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 20px;
    padding-right: 40px;
}

/* Placeholder styling */
.rsvp-validator input::placeholder {
    color: #6c757d;
    opacity: 0.8;
}

/* Focus visible outline for accessibility */
.rsvp-validator input:focus-visible {
    outline: 2px solid #4a90e2;
    outline-offset: 1px;
}

/* Remove browser autofill background */
.rsvp-validator input:-webkit-autofill,
.rsvp-validator input:-webkit-autofill:hover,
.rsvp-validator input:-webkit-autofill:focus {
    -webkit-box-shadow: 0 0 0px 1000px white inset;
    transition: background-color 5000s ease-in-out 0s;
}