/* Mobile First Responsive Design */

/* Extra Small Devices (phones, 576px and down) */
@media (max-width: 575.98px) {
    .container {
        padding: 0 var(--spacing-3);
    }
    
    /* Header */
    .header-content {
        flex-wrap: wrap;
        gap: var(--spacing-3);
    }
    
    .logo h1 {
        font-size: var(--font-size-xl);
    }
    
    .nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .search-box {
        order: 3;
        width: 100%;
    }
    
    .search-input {
        width: 100%;
    }
    
    .header-actions {
        gap: var(--spacing-2);
    }
    
    /* Hero Section */
    .hero {
        padding: var(--spacing-12) 0;
    }
    
    .hero-content .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
        text-align: center;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-description {
        font-size: var(--font-size-base);
    }
    
    .hero-buttons {
        justify-content: center;
        flex-direction: column;
        align-items: center;
    }
    
    .hero-img {
        transform: none;
        max-width: 280px;
    }
    
    /* Contact Page Specific Styles */
    .contact-info-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }
    
    .contact-info-card {
        padding: var(--spacing-6);
        text-align: center;
    }
    
    .contact-info-icon {
        width: 60px;
        height: 60px;
        font-size: var(--font-size-2xl);
        margin-bottom: var(--spacing-4);
    }
    
    .contact-form-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
    }
    
    .contact-form-sidebar {
        order: -1;
    }
    
    .contact-form {
        padding: var(--spacing-6);
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
    }
    
    .form-input,
    .form-select,
    .form-textarea {
        font-size: var(--font-size-base);
        padding: var(--spacing-4);
    }
    
    .form-submit {
        padding: var(--spacing-4);
        font-size: var(--font-size-base);
    }
    
    .contact-sidebar-card {
        padding: var(--spacing-5);
        margin-bottom: var(--spacing-4);
    }
    
    .business-hours {
        gap: var(--spacing-2);
    }
    
    .business-hour {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-1);
        padding: var(--spacing-3);
    }
    
    .quick-contact-methods {
        gap: var(--spacing-2);
    }
    
    .quick-contact-btn {
        padding: var(--spacing-3);
        justify-content: center;
        text-align: center;
    }
    
    .contact-features {
        gap: var(--spacing-2);
    }
    
    .contact-features li {
        justify-content: center;
        text-align: center;
        padding: var(--spacing-2);
        background: var(--background-light);
        border-radius: var(--radius-lg);
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
    }
    
    .faq-item {
        padding: var(--spacing-5);
    }
    
    .faq-question {
        font-size: var(--font-size-base);
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-2);
    }
    
    .faq-question i {
        font-size: var(--font-size-2xl);
    }
    
    /* Features */
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }
    
    .feature-card {
        padding: var(--spacing-6);
    }
    
    /* Products Grid */
    .products-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: var(--spacing-4);
    }
    
    /* Categories */
    .categories-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }
    
    /* Newsletter */
    .newsletter-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
        text-align: center;
    }
    
    .newsletter-form {
        flex-direction: column;
        align-items: stretch;
    }
    
    .newsletter-input {
        min-width: auto;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
        text-align: center;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        gap: var(--spacing-4);
        text-align: center;
    }
    
    /* Product Cards */
    .product-card {
        margin: 0 auto;
        max-width: 300px;
    }
    
    .product-actions {
        position: static;
        opacity: 1;
        transform: none;
        flex-direction: row;
        justify-content: center;
        margin-top: var(--spacing-3);
    }
    
    /* Cart Items */
    .cart-item {
        flex-direction: column;
        text-align: center;
    }
    
    .cart-item-image {
        align-self: center;
    }
    
    .cart-item-actions {
        flex-direction: column;
        gap: var(--spacing-3);
        align-items: center;
    }
    
    /* Modal */
    .modal {
        width: 95%;
        margin: var(--spacing-4);
    }
    
    .modal-header,
    .modal-body,
    .modal-footer {
        padding: var(--spacing-4);
    }
    
    .modal-footer {
        flex-direction: column;
    }
    
    /* Buttons */
    .btn {
        padding: var(--spacing-3) var(--spacing-5);
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 200px;
    }
}

/* Small Devices (landscape phones, 576px and up) */
@media (min-width: 576px) and (max-width: 767.98px) {
    /* Header */
    .nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .search-input {
        width: 200px;
    }
    
    /* Hero */
    .hero-content .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-buttons {
        flex-direction: row;
        justify-content: center;
        gap: var(--spacing-4);
    }
    
    /* Contact Page Styles for Small Devices */
    .contact-info-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }
    
    .contact-form-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
    }
    
    .contact-form-sidebar {
        order: -1;
    }
    
    .form-row {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-4);
    }
    
    .business-hour {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
    
    .quick-contact-btn {
        justify-content: flex-start;
    }
    
    .contact-features li {
        justify-content: flex-start;
        text-align: left;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }
    
    .faq-question {
        flex-direction: row;
        text-align: left;
    }
    
    /* Products */
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Categories */
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    /* Newsletter */
    .newsletter-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-6);
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-6);
    }
}

/* Medium Devices (tablets, 768px and up) */
@media (min-width: 768px) and (max-width: 991.98px) {
    /* Header */
    .search-input {
        width: 180px;
    }
    
    /* Hero */
    .hero-content .container {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-10);
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    /* Contact Page Styles for Medium Devices */
    .contact-info-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-8);
    }
    
    .contact-form-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-10);
    }
    
    .contact-form-sidebar {
        order: -1;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-6);
    }
    
    .contact-sidebar-card {
        margin-bottom: 0;
    }
    
    .form-row {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-4);
    }
    
    .faq-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-6);
    }
    
    /* Features */
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Products */
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Categories */
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Large Devices (desktops, 992px and up) */
@media (min-width: 992px) and (max-width: 1199.98px) {
    /* Contact Page Styles for Large Devices */
    .contact-info-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-8);
    }
    
    .contact-form-layout {
        grid-template-columns: 2fr 1fr;
        gap: var(--spacing-12);
    }
    
    .contact-form-sidebar {
        order: 0;
        display: flex;
        flex-direction: column;
    }
    
    .faq-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-8);
    }
    
    /* Products */
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* Features */
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Extra Large Devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    .container {
        max-width: 1200px;
    }
    
    /* Products */
    .products-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Mobile Navigation Menu */
.mobile-nav {
    position: fixed;
    top: 0;
    left: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--background);
    box-shadow: var(--shadow-xl);
    z-index: 10000;
    transition: left var(--transition-normal);
    overflow-y: auto;
}

.mobile-nav.active {
    left: 0;
}

.mobile-nav-header {
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.mobile-nav-close {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-2);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.mobile-nav-close:hover {
    color: var(--text-primary);
    background-color: var(--background-light);
}

.mobile-nav-list {
    list-style: none;
    padding: var(--spacing-4) 0;
}

.mobile-nav-item {
    margin-bottom: var(--spacing-2);
}

.mobile-nav-link {
    display: block;
    padding: var(--spacing-3) var(--spacing-6);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    color: var(--primary-color);
    background-color: var(--background-light);
}

.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

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

/* Responsive Tables */
@media (max-width: 767.98px) {
    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .table {
        min-width: 600px;
    }
}

/* Responsive Images */
.img-responsive {
    max-width: 100%;
    height: auto;
}

/* Responsive Embeds */
.embed-responsive {
    position: relative;
    display: block;
    width: 100%;
    padding: 0;
    overflow: hidden;
}

.embed-responsive::before {
    content: "";
    display: block;
    padding-top: 56.25%; /* 16:9 aspect ratio */
}

.embed-responsive iframe,
.embed-responsive embed,
.embed-responsive object,
.embed-responsive video {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .mobile-nav,
    .mobile-nav-overlay,
    .loading-spinner {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
        color: #000;
        background: #fff;
    }
    
    .container {
        max-width: none;
        padding: 0;
    }
    
    .product-card,
    .feature-card,
    .category-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    .btn {
        border: 1px solid #000;
        background: transparent !important;
        color: #000 !important;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #0000ff;
        --text-primary: #000000;
        --text-secondary: #000000;
        --background: #ffffff;
        --border-color: #000000;
    }
    
    .btn-primary {
        background-color: #000000;
        color: #ffffff;
        border: 2px solid #000000;
    }
    
    .btn-secondary,
    .btn-outline {
        background-color: #ffffff;
        color: #000000;
        border: 2px solid #000000;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .hero-img {
        transform: none !important;
    }
    
    .product-card:hover,
    .feature-card:hover,
    .category-card:hover {
        transform: none !important;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #3b82f6;
        --primary-dark: #2563eb;
        --text-primary: #f9fafb;
        --text-secondary: #d1d5db;
        --text-light: #9ca3af;
        --background: #111827;
        --background-light: #1f2937;
        --background-dark: #000000;
        --border-color: #374151;
        --border-light: #4b5563;
    }
    
    .header {
        background-color: var(--background-light);
    }
    
    .product-card,
    .feature-card,
    .category-card,
    .filter-section {
        background-color: var(--background-light);
    }
    
    .search-input,
    .newsletter-input {
        background-color: var(--background-light);
        color: var(--text-primary);
        border-color: var(--border-color);
    }
    
    .mobile-nav {
        background-color: var(--background-light);
    }
}

/* Focus Styles for Accessibility */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.btn:focus,
.search-input:focus,
.newsletter-input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.3);
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 10001;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 6px;
}

/* Screen Reader Only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}