/* ===== FORM-STYLE.CSS - Enhanced Form Validation & Animation Styles ===== */

/* Success States for Individual Fields */
.input-group.success input,
.input-group.success select,
.input-group.success textarea {
    border-color: var(--color-success, #28a745);
    background-color: rgba(40, 167, 69, 0.05);
    box-shadow: 0 0 0 3px rgba(40, 167, 69, 0.1);
}

.input-group.success .input-icon {
    color: var(--color-success, #28a745);
}

.input-group.success label.active {
    color: var(--color-success, #28a745);
}

/* Loading Button Animation - 3 chấm nhấp nháy */
@keyframes dotFlashing {
    0% {
        background-color: currentColor;
    }
    50%,
    100% {
        background-color: rgba(255, 255, 255, 0.3);
    }
}

.btn-loading .loading-dots {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.btn-loading .loading-dots::before,
.btn-loading .loading-dots::after,
.btn-loading .loading-dots {
    display: inline-block;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background-color: currentColor;
    animation: dotFlashing 1.4s infinite ease-in-out;
}

.btn-loading .loading-dots::before {
    content: '';
    animation-delay: -0.32s;
    margin-right: 4px;
}

.btn-loading .loading-dots::after {
    content: '';
    animation-delay: -0.16s;
    margin-left: 4px;
}

/* Enhanced Button Loading State */
.btn-submit.loading {
    pointer-events: none;
    opacity: 0.8;
    transform: none !important;
}

.btn-submit .btn-loading {
    display: none;
    align-items: center;
    gap: var(--spacing-sm, 8px);
}

.btn-submit.loading .btn-loading {
    display: inline-flex;
}

.btn-submit.loading .btn-text {
    display: none;
}

/* Enhanced Loading Animation for Button Text */
.btn-loading-text {
    position: relative;
}

.btn-loading-text::after {
    content: '';
    position: absolute;
    right: -20px;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    border: 2px solid currentColor;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: translateY(-50%) rotate(0deg); }
    100% { transform: translateY(-50%) rotate(360deg); }
}

/* Toast Notifications */
.contact-toast {
    font-family: var(--font-family-primary, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
    line-height: 1.4;
    z-index: 100000 !important;
}

.contact-toast .toast-message {
    flex: 1;
    font-size: 14px;
}

.contact-toast .toast-close {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}

/* Validation Animation Enhancements */
.input-group.error input,
.input-group.error select,
.input-group.error textarea {
    animation: shake 0.5s ease-in-out, glow-error 0.3s ease-out;
}

.input-group.success input,
.input-group.success select,
.input-group.success textarea {
    animation: glow-success 0.3s ease-out;
}

@keyframes glow-error {
    0% {
        box-shadow: 0 0 0 0 rgba(220, 53, 69, 0.4);
    }
    70% {
        box-shadow: 0 0 0 8px rgba(220, 53, 69, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(220, 53, 69, 0);
    }
}

@keyframes glow-success {
    0% {
        box-shadow: 0 0 0 0 rgba(40, 167, 69, 0.4);
    }
    70% {
        box-shadow: 0 0 0 8px rgba(40, 167, 69, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(40, 167, 69, 0);
    }
}

/* Enhanced Shake Animation */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
    20%, 40%, 60%, 80% { transform: translateX(4px); }
}

/* Floating Label Active State Enhancement */
.input-group label.active {
    transform: translateY(-50%) scale(0.85);
    transform-origin: left center;
    transition: all 0.2s ease-out;
}

/* Focus Ring Enhancement */
.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(148, 109, 70, 0.1), 0 4px 12px rgba(0, 0, 0, 0.1);
}

.input-group.error input:focus,
.input-group.error select:focus,
.input-group.error textarea:focus {
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1), 0 4px 12px rgba(220, 53, 69, 0.1);
}

.input-group.success input:focus,
.input-group.success select:focus,
.input-group.success textarea:focus {
    box-shadow: 0 0 0 3px rgba(40, 167, 69, 0.1), 0 4px 12px rgba(40, 167, 69, 0.1);
}

/* Error Popup Enhancement */
.input-group .error-popup {
    font-size: var(--font-size-sm, 14px);
    line-height: 1.3;
    max-width: 250px;
    word-wrap: break-word;
}

.input-group .error-popup::before {
    border-width: 6px;
    border-right-color: var(--color-error, #dc3545);
}

/* Mobile Responsive Enhancements */
@media (max-width: 768px) {
    .contact-toast {
        top: 10px;
        right: 10px;
        left: 10px;
        max-width: none;
        font-size: 14px;
        z-index: 100000 !important;
    }
    
    .input-group .error-popup {
        position: absolute;
        top: calc(100% + 5px);
        left: 0;
        background-color: var(--color-error, #dc3545);
        color: var(--color-white);
        box-shadow: var(--shadow-md);
        border-radius: var(--border-radius-md);
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 12px;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        max-width: 250px;
        white-space: nowrap;
        z-index: 100;
    }
    
    .input-group .error-popup::before {
        content: '';
        position: absolute;
        top: -5px;
        left: var(--spacing-lg);
        width: 0;
        height: 0;
        border-left: 5px solid transparent;
        border-right: 5px solid transparent;
        border-bottom: 5px solid var(--color-error, #dc3545);
    }
    
    .input-group.error .error-popup {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
}

/* Loading State for Entire Form */
.contact-form.loading {
    position: relative;
    pointer-events: none;
}

.contact-form.loading::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.7);
    z-index: 10;
    border-radius: inherit;
}

/* Accessibility Improvements */
.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
    outline: 2px solid transparent;
    outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .input-group.error input,
    .input-group.error select,
    .input-group.error textarea {
        border-width: 3px;
    }
    
    .input-group.success input,
    .input-group.success select,
    .input-group.success textarea {
        border-width: 3px;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .input-group.error input,
    .input-group.error select,
    .input-group.error textarea {
        animation: none;
    }
    
    .input-group.success input,
    .input-group.success select,
    .input-group.success textarea {
        animation: none;
    }
    
    .contact-toast {
        animation: none;
    }
    
    .btn-loading .loading-dots,
    .btn-loading .loading-dots::before,
    .btn-loading .loading-dots::after {
        animation: none;
    }
}

/* Success Modal Additional Styles */
.success-modal * {
    box-sizing: border-box;
}

.success-modal .success-message {
    font-family: var(--font-family-primary, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
}

.success-modal .contact-info-item h4 {
    font-family: var(--font-family-heading, 'Inter', sans-serif);
}

.success-modal .contact-info-item p {
    font-family: var(--font-family-primary, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
}

/* Enhanced error state auto-clear */
.input-group.error {
    animation: errorFadeOut 3s ease-out forwards;
}

@keyframes errorFadeOut {
    0% {
        border-color: var(--color-error, #dc3545);
        background-color: rgba(220, 53, 69, 0.05);
    }
    90% {
        border-color: var(--color-error, #dc3545);
        background-color: rgba(220, 53, 69, 0.05);
    }
    100% {
        border-color: var(--color-bg-secondary, #e9ecef);
        background-color: transparent;
    }
}

.input-group.error .error-popup {
    animation: errorPopupFadeOut 3s ease-out forwards;
}

@keyframes errorPopupFadeOut {
    0% {
        opacity: 1;
        visibility: visible;
        transform: translateY(-50%) scale(1);
    }
    90% {
        opacity: 1;
        visibility: visible;
        transform: translateY(-50%) scale(1);
    }
    100% {
        opacity: 0;
        visibility: hidden;
        transform: translateY(-50%) scale(0.8);
    }
}