/* Modern Footer Styles */
/* Built with the same design system as styles.css and nav.css */
/* Scoped to footer to avoid conflicts with navigation */

.modern-footer {
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95) !important;
    border-top: 1px solid var(--border-color);
    color: var(--text-dark);
    position: relative;
    margin-top: 4rem;
}

.modern-footer .footer-main {
    padding: 4rem 0 2rem;
    position: relative;
}

/* Brand Section - matching navbar brand style but scoped to footer */
.modern-footer .footer-brand-section {
    margin-bottom: 2rem;
}

.modern-footer .brand-logo {
    margin-bottom: 1.5rem;
}

.modern-footer .brand-name {
    font-weight: 700;
    font-size: 1.75rem;
    color: var(--primary-blue) !important;
    letter-spacing: -0.02em;
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.modern-footer .brand-tagline {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted) !important;
    letter-spacing: 0.025em;
    margin-top: 0.25rem;
    text-transform: uppercase;
}

.modern-footer .company-description {
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

/* Contact Info - scoped to footer */
.modern-footer .contact-info {
    margin-bottom: 2rem;
}

.modern-footer .contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
    color: var(--text-muted) !important;
    font-size: 0.9rem;
    transition: var(--transition);
    font-weight: 500;
}

.modern-footer .contact-item span {
    color: var(--text-muted) !important;
    font-size: 0.9rem;
    font-weight: 500;
}

.modern-footer .contact-item i {
    width: 18px;
    margin-right: 0.75rem;
    color: var(--text-muted) !important;
    font-size: 0.85rem;
    text-align: center;
}

.modern-footer .contact-item:hover {
    color: var(--primary-blue);
}

/* Social Links - matching nav.css social link style */
.modern-footer .social-links {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.modern-footer .social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-dark);
    text-decoration: none;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.modern-footer .social-link:hover {
    background-color: var(--primary-blue);
    color: var(--white);
    border-color: var(--primary-blue);
}

.modern-footer .social-link i {
    font-size: 1.1rem;
}

/* Footer Sections - scoped animations */
.modern-footer .footer-section {
    opacity: 0;
    transform: translateY(20px);
    animation: footerSectionFadeIn 0.8s ease-out forwards;
}

.modern-footer .footer-section:nth-child(1) { animation-delay: 0.1s; }
.modern-footer .footer-section:nth-child(2) { animation-delay: 0.2s; }
.modern-footer .footer-section:nth-child(3) { animation-delay: 0.3s; }
.modern-footer .footer-section:nth-child(4) { animation-delay: 0.4s; }

@keyframes footerSectionFadeIn {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.modern-footer .section-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
    position: relative;
    padding-bottom: 0.5rem;
    font-family: 'Inter', sans-serif;
}

.modern-footer .section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--primary-blue);
    border-radius: var(--border-radius);
}

.modern-footer .section-description {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

/* Footer Links - scoped to avoid nav conflicts */
.modern-footer .footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.modern-footer .footer-links li {
    margin-bottom: 0.75rem;
}

.modern-footer .footer-links a {
    color: var(--text-dark) !important;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    display: inline-block;
    padding: 0.25rem 0;
}

.modern-footer .footer-links a:hover {
    color: var(--primary-blue) !important;
}

/* Newsletter Form - matching nav.css input style */
.modern-footer .newsletter-form {
    margin-bottom: 2rem;
}

.modern-footer .input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background-color: var(--search-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
    overflow: hidden;
}

.modern-footer .input-wrapper:focus-within {
    border-color: transparent;
    background-color: var(--white);
    box-shadow: 0 0 0 3px rgba(27, 54, 93, 0.1);
}

.modern-footer .newsletter-input {
    flex: 1;
    background: transparent;
    border: none;
    padding: 0.5rem 0.875rem;
    color: var(--text-dark);
    font-size: 0.875rem;
    outline: none;
    font-family: 'Inter', sans-serif;
}

.modern-footer .newsletter-input::placeholder {
    color: var(--text-muted);
    opacity: 1;
}

.modern-footer .newsletter-btn {
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    padding: 0.5rem 1rem;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
    min-width: 40px;
    font-weight: 600;
    letter-spacing: 0.025em;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.modern-footer .newsletter-btn:hover {
    background-color: var(--primary-dark);
}

.modern-footer .newsletter-btn i {
    font-size: 0.9rem;
}

/* Product Search Section - matching nav.css search style */
.modern-footer .product-search-section {
    margin-top: 1.5rem;
}

.modern-footer .search-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
    font-family: 'Inter', sans-serif;
}

.modern-footer .search-wrapper {
    position: relative;
}

.modern-footer .search-input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.modern-footer .product-search-input {
    width: 100%;
    padding: 0.5rem 2.5rem 0.5rem 0.875rem;
    background-color: var(--search-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    color: var(--text-dark);
    transition: var(--transition);
    outline: none;
    font-family: 'Inter', sans-serif;
}

.modern-footer .product-search-input:focus {
    border-color: transparent;
    box-shadow: none;
    background-color: var(--white);
}

.modern-footer .product-search-input::placeholder {
    color: var(--text-muted);
}

.modern-footer .search-submit-btn {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    transition: var(--transition);
    color: var(--text-muted);
}

.modern-footer .search-submit-btn:hover {
    background-color: var(--primary-blue);
    color: var(--white);
}

.modern-footer .search-submit-btn i {
    font-size: 0.875rem;
}

/* Footer Bottom - scoped */
.modern-footer .footer-bottom {
    background-color: rgba(247, 250, 252, 0.8);
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 0;
    margin-top: 2rem;
    backdrop-filter: blur(5px);
}

.modern-footer .copyright-text p {
    color: var(--text-muted);
    margin: 0;
    font-size: 0.85rem;
    font-weight: 500;
}

.modern-footer .footer-legal {
    display: flex;
    justify-content: flex-end;
    gap: 1.5rem;
}

.modern-footer .footer-legal a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--transition);
    font-weight: 500;
}

.modern-footer .footer-legal a:hover {
    color: var(--primary-blue);
}

/* Back to Top Button - matching custom contact button style */
.footer-back-to-top {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-blue);
    border: none;
    border-radius: var(--border-radius);
    color: var(--white);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(27, 54, 93, 0.2);
    font-weight: 600;
}

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

.footer-back-to-top:hover {
    background-color: var(--primary-dark);
}

.footer-back-to-top i {
    font-size: 1.1rem;
}

/* Responsive Design - all scoped to footer */
@media (max-width: 1200px) {
    .modern-footer .footer-main {
        padding: 3rem 0 1.5rem;
    }
    
    .modern-footer .brand-name {
        font-size: 1.5rem;
    }
    
    .modern-footer .footer-legal {
        justify-content: flex-start;
        margin-top: 1rem;
    }
    
    .modern-footer .social-link {
        width: 38px;
        height: 38px;
    }
}

@media (max-width: 767.98px) {
    .modern-footer .footer-main {
        padding: 2.5rem 0 1.5rem;
    }
    
    .modern-footer .brand-name {
        font-size: 1.4rem;
    }
    
    .modern-footer .social-links {
        justify-content: flex-start;
        margin-bottom: 1rem;
    }
    
    .modern-footer .footer-legal {
        flex-direction: column;
        gap: 0.75rem;
        text-align: left;
    }
    
    .footer-back-to-top {
        display: none !important; /* 移动端隐藏back to top按钮 */
    }
    
    /* Enhanced mobile input styling - preventing iOS zoom */
    .modern-footer .newsletter-input,
    .modern-footer .product-search-input {
        font-size: 16px !important;
        padding: 0.5rem 0.875rem;
    }
    
    .modern-footer .product-search-input {
        padding-right: 2.5rem !important;
    }
    
    .modern-footer .newsletter-btn,
    .modern-footer .search-submit-btn {
        min-width: 44px;
    }
    
    .modern-footer .social-link {
        width: 36px;
        height: 36px;
    }
}

@media (max-width: 575.98px) {
    .modern-footer .footer-main {
        padding: 2rem 0 1rem;
    }
    
    .modern-footer .brand-name {
        font-size: 1.3rem;
    }
    
    .modern-footer .section-title {
        font-size: 1.1rem;
    }
    
    .modern-footer .footer-legal a,
    .modern-footer .copyright-text p {
        font-size: 0.8rem;
    }
    
    .modern-footer .contact-item {
        font-size: 0.85rem;
    }
    
    .footer-back-to-top {
        display: none !important; /* 小屏幕移动端隐藏back to top按钮 */
    }

    .footer-back-to-top i {
        font-size: 1rem;
    }
    
    .modern-footer .social-link {
        width: 34px;
        height: 34px;
    }
}

/* Touch device optimizations - scoped to footer */
@media (hover: none) and (pointer: coarse) {
    .modern-footer .social-link,
    .modern-footer .newsletter-btn,
    .modern-footer .search-submit-btn {
        min-height: 44px;
        min-width: 44px;
    }

    /* 触摸设备隐藏back to top按钮 */
    .footer-back-to-top {
        display: none !important;
    }

    /* Remove hover effects on touch devices */
    .modern-footer .social-link:hover,
    .modern-footer .newsletter-btn:hover,
    .modern-footer .search-submit-btn:hover {
        transform: none;
    }

    /* Add active states for better touch feedback */
    .modern-footer .social-link:active {
        transform: scale(0.95);
        background-color: var(--primary-blue);
        color: var(--white);
    }

    .modern-footer .newsletter-btn:active,
    .modern-footer .search-submit-btn:active {
        transform: scale(0.95);
    }
}

/* Reduced motion support - scoped to footer */
@media (prefers-reduced-motion: reduce) {
    .modern-footer .footer-section,
    .modern-footer .social-link,
    .modern-footer .newsletter-btn,
    .modern-footer .search-submit-btn,
    .footer-back-to-top,
    .modern-footer .footer-links a,
    .modern-footer .contact-item {
        animation: none !important;
        transition: none !important;
    }

    .modern-footer .footer-section {
        opacity: 1;
        transform: none;
    }
}

/* High contrast mode support - scoped to footer */
@media (prefers-contrast: high) {
    .modern-footer {
        background-color: #ffffff !important;
        color: #000000;
    }
    
    .modern-footer .social-link,
    .modern-footer .input-wrapper,
    .modern-footer .product-search-input {
        border: 2px solid #000000;
    }
    
    .modern-footer .newsletter-btn,
    .modern-footer .search-submit-btn:hover {
        background-color: #000000;
        color: #ffffff;
        border: 2px solid #000000;
    }
}