/* Additional Styles for Enhanced Features */

/* Notification System */
.notification {
    position: fixed;
    top: 100px;
    right: 24px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    max-width: 400px;
    transform: translateX(120%);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 9999;
}

.notification.show {
    transform: translateX(0);
    opacity: 1;
}

.notification-success {
    border-left: 4px solid #52c41a;
}

.notification-error {
    border-left: 4px solid #f5222d;
}

.notification-warning {
    border-left: 4px solid #faad14;
}

.notification-icon {
    font-size: 20px;
    font-weight: bold;
}

.notification-success .notification-icon { color: #52c41a; }
.notification-error .notification-icon { color: #f5222d; }
.notification-warning .notification-icon { color: #faad14; }

.notification-message {
    flex: 1;
    font-size: 14px;
    color: rgba(0,0,0,0.85);
}

.notification-close {
    background: none;
    border: none;
    font-size: 18px;
    color: rgba(0,0,0,0.45);
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
}

.notification-close:hover {
    background: rgba(0,0,0,0.05);
    color: rgba(0,0,0,0.85);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 998;
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Header States */
.header.scrolled {
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.header.hidden {
    transform: translateY(-100%);
}

.header {
    transition: transform 0.3s, box-shadow 0.3s;
}

/* Form Validation Styles */
.form-group {
    position: relative;
}

.form-group input.error,
.form-group textarea.error {
    border-color: #f5222d;
    background: #fff1f0;
}

.error-message {
    display: block;
    color: #f5222d;
    font-size: 12px;
    margin-top: 4px;
    animation: slideDown 0.2s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Loading Spinner */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: 0 4px 12px rgba(26,95,158,0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s;
    z-index: 997;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* Scroll Reveal Animation */
[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Lazy Load Images */
img[data-src] {
    opacity: 0;
    transition: opacity 0.3s;
}

img[data-src].loaded {
    opacity: 1;
}

img[data-src].error {
    opacity: 1;
    background: #f5f5f5;
}

/* Product Filter */
.filter-buttons {
    display: flex;
    gap: 12px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    background: #fff;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* Fade In Animation */
.fade-in {
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Stagger Animation for Grid Items */
.products-grid .product-card:nth-child(1) { animation-delay: 0.1s; }
.products-grid .product-card:nth-child(2) { animation-delay: 0.2s; }
.products-grid .product-card:nth-child(3) { animation-delay: 0.3s; }
.products-grid .product-card:nth-child(4) { animation-delay: 0.4s; }

/* Enhanced Hover Effects */
.product-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

/* Image Zoom Effect */
.product-image {
    overflow: hidden;
}

.product-image img {
    transition: transform 0.5s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Tooltip */
[title] {
    position: relative;
}

[title]:hover::after {
    content: attr(title);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 12px;
    background: rgba(0,0,0,0.8);
    color: #fff;
    font-size: 12px;
    border-radius: 4px;
    white-space: nowrap;
    z-index: 1000;
    margin-bottom: 8px;
}

/* Focus Styles for Accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Skip to Content Link (Accessibility) */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary);
    color: #fff;
    padding: 8px;
    z-index: 10000;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

/* Print Styles */
@media print {
    .header,
    .chat-widget,
    .chat-toggle,
    .back-to-top,
    .mobile-menu-toggle {
        display: none !important;
    }
    
    .hero {
        height: auto;
        min-height: 300px;
    }
    
    a[href]::after {
        content: " (" attr(href) ")";
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --primary: #005a9c;
        --text-primary: #000;
    }
}