/*
 * Modern CSS for DieCastFast.com
 * Responsive, accessible, mobile-first design
 */

/* ========================================
   CSS Custom Properties (Variables)
   ======================================== */
:root {
    /* Colors */
    --color-primary: #c00000;
    --color-primary-dark: #8b0000;
    --color-secondary: #333333;
    --color-accent: #f5f5f5;
    --color-background: #ffffff;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-border: #dddddd;
    --color-success: #28a745;
    --color-warning: #ffc107;

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-size-base: 16px;
    --font-size-small: 0.875rem;
    --font-size-large: 1.125rem;
    --font-size-h1: 2rem;
    --font-size-h2: 1.5rem;
    --font-size-h3: 1.25rem;
    --line-height-base: 1.6;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;

    /* Layout */
    --sidebar-width: 220px;
    --container-max-width: 1200px;
    --header-height: 80px;

    /* Borders & Shadows */
    --border-radius: 4px;
    --box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    --box-shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

/* ========================================
   Reset & Base Styles
   ======================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-background);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover,
a:focus {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

h1, h2, h3, h4, h5, h6 {
    margin: 0 0 var(--spacing-md);
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: var(--font-size-h1); }
h2 { font-size: var(--font-size-h2); }
h3 { font-size: var(--font-size-h3); }

p {
    margin: 0 0 var(--spacing-md);
}

ul, ol {
    margin: 0;
    padding: 0;
    list-style: none;
}

/* ========================================
   Layout Components
   ======================================== */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.page-container {
    display: flex;
    flex-direction: column;
    min-height: calc(100vh - var(--header-height));
}

/* Mobile: Show main content BEFORE sidebar */
.main-content {
    order: 1 !important;
}

.sidebar {
    order: 2 !important;
}

@media (min-width: 768px) {
    .page-container {
        flex-direction: row;
    }

    /* Desktop: Reset order so sidebar is on left */
    .sidebar {
        order: 1 !important;
    }

    .main-content {
        order: 2 !important;
    }
}

/* ========================================
   Header
   ======================================== */
.site-header {
    background: var(--color-secondary);
    color: white;
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--box-shadow);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 50px;
    width: auto;
}

/* Text Logo */
.logo-text {
    font-family: 'Segoe UI', 'Arial Black', Impact, sans-serif;
    font-size: 1.75rem;
    font-weight: 800;
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo-text:hover {
    text-decoration: none;
}

.logo-text .die {
    color: #ffffff;
}

.logo-text .cast {
    color: #c00000;
}

.logo-text .fast {
    color: #FFD700;
}

.main-nav a {
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    transition: background-color var(--transition-fast);
}

.main-nav a:hover,
.main-nav a:focus {
    background-color: rgba(255, 255, 255, 0.1);
    text-decoration: none;
}

/* ========================================
   Sidebar Navigation
   ======================================== */
.sidebar {
    width: 100%;
    background: var(--color-accent);
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

@media (min-width: 768px) {
    .sidebar {
        width: var(--sidebar-width);
        min-width: var(--sidebar-width);
        border-bottom: none;
        border-right: 1px solid var(--color-border);
        min-height: calc(100vh - var(--header-height));
        position: sticky;
        top: var(--header-height);
        align-self: flex-start;
        overflow-y: auto;
        max-height: calc(100vh - var(--header-height));
    }
}

.category-nav h3 {
    font-size: var(--font-size-small);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-light);
    margin: var(--spacing-lg) 0 var(--spacing-sm);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--color-primary);
}

.category-nav h3:first-child {
    margin-top: 0;
}

/* Home link in sidebar */
.home-link {
    display: block;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-primary);
    padding: var(--spacing-sm) 0;
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.category-nav ul {
    margin-bottom: var(--spacing-md);
}

.category-nav li {
    margin: var(--spacing-xs) 0;
}

.category-nav a {
    display: block;
    padding: var(--spacing-xs) 0;
    font-size: var(--font-size-small);
    color: var(--color-text);
    transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.category-nav a:hover,
.category-nav a:focus {
    color: var(--color-primary);
    padding-left: var(--spacing-sm);
    text-decoration: none;
}

/* ========================================
   Main Content Area
   ======================================== */
.main-content {
    flex: 1;
    padding: var(--spacing-lg);
    max-width: 100%;
}

@media (min-width: 768px) {
    .main-content {
        padding: var(--spacing-xl);
        max-width: calc(100% - var(--sidebar-width));
    }
}

/* ========================================
   Breadcrumbs
   ======================================== */
.breadcrumbs {
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-small);
}

.breadcrumbs ol {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-xs);
}

.breadcrumbs li {
    display: flex;
    align-items: center;
}

.breadcrumbs li:not(:last-child)::after {
    content: "›";
    margin-left: var(--spacing-xs);
    color: var(--color-text-light);
}

.breadcrumbs a {
    color: var(--color-text-light);
}

.breadcrumbs a:hover {
    color: var(--color-primary);
}

.breadcrumbs li:last-child span {
    color: var(--color-text);
    font-weight: 500;
}

/* ========================================
   Product Detail Page
   ======================================== */
.product-detail {
    max-width: 800px;
}

.product-title {
    font-size: var(--font-size-h1);
    color: var(--color-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.product-image {
    margin-bottom: var(--spacing-xl);
    text-align: center;
    background: var(--color-accent);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
}

.product-image .main-image {
    max-width: 100%;
    max-height: 500px;
    margin: 0 auto;
    object-fit: contain;
}

/* Additional Product Images */
.additional-images {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 640px) {
    .additional-images {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .additional-images {
        grid-template-columns: repeat(4, 1fr);
    }
}

.additional-image {
    background: var(--color-accent);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    text-align: center;
}

.additional-image img {
    max-width: 100%;
    height: auto;
    object-fit: contain;
}

.product-info {
    background: var(--color-accent);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-xl);
}

.product-info h2 {
    font-size: var(--font-size-h3);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
}

/* Product Navigation */
.product-nav {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.product-nav a {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-accent);
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: background-color var(--transition-fast);
}

.product-nav a:hover,
.product-nav a:focus {
    background: var(--color-border);
    text-decoration: none;
}

.nav-prev::before {
    content: '';
}

.nav-next::after {
    content: '';
}

/* ========================================
   Related Products Section
   ======================================== */
.related-products {
    margin-top: var(--spacing-xxl);
    padding-top: var(--spacing-xl);
    border-top: 2px solid var(--color-border);
}

.related-products h2 {
    margin-bottom: var(--spacing-lg);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

@media (min-width: 640px) {
    .related-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .related-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.related-product {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

.related-product:hover {
    box-shadow: var(--box-shadow-hover);
    transform: translateY(-2px);
}

.related-product a {
    display: block;
    color: var(--color-text);
}

.related-product img {
    max-width: 120px;
    width: auto;
    height: auto;
    object-fit: contain;
    background: var(--color-accent);
    padding: var(--spacing-sm);
    margin: var(--spacing-sm) auto;
}

.related-product .product-name {
    display: block;
    padding: var(--spacing-sm);
    font-size: var(--font-size-small);
    line-height: 1.3;
    text-align: center;
}

/* ========================================
   Product Grid (Category Pages)
   ======================================== */
.category-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--color-border);
}

.category-header h1 {
    margin-bottom: var(--spacing-sm);
}

.product-count {
    color: var(--color-text-light);
    font-size: var(--font-size-small);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--spacing-lg);
}

@media (min-width: 480px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .product-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.product-card {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: box-shadow var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    box-shadow: var(--box-shadow-hover);
}

.product-card a {
    color: var(--color-text);
}

.product-card img {
    max-width: 150px;
    width: auto;
    height: auto;
    object-fit: contain;
    background: var(--color-accent);
    padding: var(--spacing-sm);
    margin: var(--spacing-md) auto;
}

.product-card .product-name {
    padding: var(--spacing-md);
    font-size: var(--font-size-small);
    font-weight: 500;
    text-align: center;
    flex: 1;
}

.product-card .btn {
    margin: 0 var(--spacing-md) var(--spacing-md);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-small);
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.btn:hover,
.btn:focus {
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-primary {
    background: var(--color-primary);
    color: white;
}

.btn-primary:hover,
.btn-primary:focus {
    background: var(--color-primary-dark);
    color: white;
}

/* ========================================
   Homepage Sections
   ======================================== */
.hero {
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-secondary) 0%, #444 100%);
    color: white;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-xxl);
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: var(--font-size-large);
    opacity: 0.9;
    margin: 0;
}

.hero-tagline {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.05em;
}

/* Collection Intro Section */
.collection-intro {
    margin-bottom: var(--spacing-xxl);
    padding: var(--spacing-xl);
    background: var(--color-accent);
    border-radius: var(--border-radius);
}

.collection-intro h2 {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
}

.collection-intro h3 {
    color: var(--color-secondary);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.collection-intro > p {
    font-size: var(--font-size-base);
    line-height: 1.8;
    color: var(--color-text);
}

.brands-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--spacing-md);
}

@media (min-width: 640px) {
    .brands-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .brands-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.brand-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-primary);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.brand-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.brand-card a {
    color: var(--color-primary);
    text-decoration: none;
    font-size: var(--font-size-base);
}

.brand-card a:hover {
    text-decoration: underline;
}

.brand-card p {
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    margin: var(--spacing-xs) 0 0 0;
}

/* Shop by Make Section */
.shop-by-make {
    margin-bottom: var(--spacing-xxl);
}

.shop-by-make h2 {
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
}

.shop-by-make > p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

.makes-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.make-tag {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-secondary);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-small);
    font-weight: 500;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.make-tag:hover {
    background: var(--color-primary);
    color: white;
    text-decoration: none;
    transform: translateY(-2px);
}

.featured-products {
    margin-bottom: var(--spacing-xxl);
}

.featured-products h2 {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
}

.why-choose-us {
    margin-bottom: var(--spacing-xxl);
}

.why-choose-us h2 {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--spacing-lg);
}

@media (min-width: 640px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.feature {
    background: var(--color-accent);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    text-align: center;
}

.feature h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.feature p {
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    margin: 0;
}

/* FAQ Section */
.faq-section {
    margin-bottom: var(--spacing-xxl);
}

.faq-section h2 {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
}

.faq-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .faq-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.faq-item {
    background: var(--color-accent);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-primary);
}

.faq-item h3 {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-base);
}

.faq-item p {
    font-size: var(--font-size-small);
    line-height: 1.7;
    color: var(--color-text);
    margin: 0;
}

.site-news {
    background: var(--color-accent);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
}

.site-news h2 {
    margin-bottom: var(--spacing-lg);
}

.news-content {
    font-size: var(--font-size-small);
    line-height: 1.7;
}

.last-updated {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    font-style: italic;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    background: var(--color-secondary);
    color: white;
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 640px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        text-align: left;
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.footer-section h4 {
    color: white;
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--color-primary);
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section li {
    margin-bottom: var(--spacing-xs);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-small);
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: white;
    text-decoration: none;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-small);
    line-height: 1.6;
    margin: 0;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom p {
    margin: 0;
    font-size: var(--font-size-small);
    color: rgba(255, 255, 255, 0.7);
}

/* ========================================
   Utility Classes
   ======================================== */
.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;
}

.text-center {
    text-align: center;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .sidebar,
    .site-header,
    .site-footer,
    .product-nav,
    .related-products {
        display: none;
    }

    .main-content {
        padding: 0;
        max-width: 100%;
    }

    .product-image img {
        max-height: 300px;
    }
}