/* CSS Custom Properties */
:root {
    --color-primary: #e67e22;
    --color-primary-dark: #d35400;
    --color-text: #333;
    --color-text-light: #666;
    --color-background: #fafafa;
    --color-surface: #fff;
    --color-border: #e0e0e0;

    /* Provider brand colors */
    --color-coolblue: #0090e3;
    --color-bol: #0000a3;
    --color-amazon: #232f3e;
    --color-mediamarkt: #df0000;

    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --max-width: 1200px;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;

    --border-radius: 8px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
}

/* Reset and base styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    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 0.2s ease;
}

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

/* Layout */
main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

/* Header */
.site-header {
    background-color: var(--color-surface);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}

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

.logo img {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

/* Navigation */
.main-nav {
    position: relative;
}

.menu-toggle {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.menu-icon {
    display: block;
    width: 24px;
    height: 3px;
    background-color: var(--color-text);
    position: relative;
    transition: background-color 0.2s;
}

.menu-icon::before,
.menu-icon::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 3px;
    background-color: var(--color-text);
    transition: transform 0.2s;
}

.menu-icon::before {
    top: -7px;
}

.menu-icon::after {
    top: 7px;
}

.nav-list {
    display: none;
    list-style: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--color-surface);
    box-shadow: var(--shadow-md);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    min-width: 200px;
    margin-top: var(--spacing-sm);
}

.nav-list.is-open {
    display: block;
}

.nav-list a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text);
    font-weight: 500;
}

.nav-list a:hover {
    background-color: var(--color-background);
    border-radius: var(--border-radius);
}

/* Desktop navigation */
@media (min-width: 768px) {
    .menu-toggle {
        display: none;
    }

    .nav-list {
        display: flex !important;
        position: static;
        box-shadow: none;
        padding: 0;
        gap: var(--spacing-lg);
        background: transparent;
    }

    .nav-list a {
        padding: var(--spacing-xs) 0;
    }

    .nav-list a:hover {
        background-color: transparent;
        color: var(--color-primary);
    }
}

/* Hero section */
.hero {
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-background) 100%);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-xxl);
}

.hero h1 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.hero p {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Category sections */
.category-section {
    margin-bottom: var(--spacing-xxl);
}

.category-section h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.view-all {
    display: inline-block;
    margin-top: var(--spacing-lg);
    font-weight: 500;
}

/* Article grid */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.article-card {
    background: var(--color-surface);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.article-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.article-card a {
    display: block;
    color: var(--color-text);
}

.article-card img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.article-card h3 {
    padding: var(--spacing-md);
    font-size: 1.125rem;
    font-weight: 600;
}

.article-card p {
    padding: 0 var(--spacing-md) var(--spacing-md);
    color: var(--color-text-light);
    font-size: 0.9375rem;
}

/* Category page */
.category-header {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.category-header h1 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.category-header p {
    color: var(--color-text-light);
    font-size: 1.125rem;
}

/* Article page */
.article-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.article-header h1 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-lg);
}

.cover-image {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    /* object-fit: contain; */
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
}

.introduction {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.7;
    text-align: left;
}

.introduction p {
    margin: 8px 0;
}

/* Product sections */
.product-section {
    background: var(--color-surface);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-xl);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.product-section h2 {
    font-size: 1.375rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.product-layout {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.product-image {
    flex: 0 0 auto;
}

.product-image img {
    width: 100%;
    max-width: 300px;
    aspect-ratio: 1;
    /* object-fit: cover; */
    object-fit: contain;
    border-radius: var(--border-radius);
}

.product-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    align-items: flex-start;
}

@media (min-width: 768px) {
    .product-layout {
        flex-direction: row;
        align-items: flex-start;
    }

    .product-actions {
        flex-direction: column;
    }
}

/* Provider buttons */
.provider-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-md);
    color: white;
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: opacity 0.2s ease, transform 0.1s ease;
    font-size: 0.9375rem;
    min-width: 160px;
}

.provider-btn:hover {
    opacity: 0.9;
    color: white;
}

.provider-btn:active {
    transform: scale(0.98);
}

.provider-btn.coolblue {
    background-color: var(--color-coolblue);
}

.provider-btn.bol {
    background-color: var(--color-bol);
}

.provider-btn.amazon {
    background-color: var(--color-amazon);
}

.provider-btn.mediamarkt {
    background-color: var(--color-mediamarkt);
}

/* Review content */
.review-content h3 {
    font-size: 1.125rem;
    margin: var(--spacing-lg) 0 var(--spacing-sm);
    color: var(--color-text);
}

.review-content h3:first-child {
    margin-top: 0;
}

.review-content p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

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

.related-articles h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
}

/* Footer */
.site-footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-xxl);
    padding: var(--spacing-lg) var(--spacing-md);
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
}

.copyright {
    color: var(--color-text-light);
    font-size: 0.9375rem;
}

.footer-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
}

.footer-nav a {
    color: var(--color-text-light);
    font-size: 0.9375rem;
}

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

@media (min-width: 768px) {
    .footer-container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

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

/* Breadcrumb */
.breadcrumb {
    margin-bottom: var(--spacing-lg);
}

.breadcrumb ol {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.breadcrumb li::after {
    content: '/';
    margin-left: var(--spacing-xs);
}

.breadcrumb li:last-child::after {
    content: '';
}

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

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

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

/* Publication date */
.publication-date {
    display: block;
    color: var(--color-text-light);
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-md);
}

.category-section-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: var(--spacing-lg);
}

.category-section-header h2 {
    margin-bottom: 0;
}

/* Responsive typography */
@media (min-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .article-header h1 {
        font-size: 2.25rem;
    }

    .product-section h2 {
        font-size: 1.5rem;
    }
}

/* Static pages */
.static-page {
    max-width: 800px;
    margin: 0 auto;
}

.static-page h1 {
    font-size: 2rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.static-page h2 {
    font-size: 1.5rem;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.static-page p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
    line-height: 1.7;
}

.static-page ul {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.static-page li {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
    line-height: 1.7;
}

.static-page a {
    color: var(--color-primary);
}

.static-page a:hover {
    color: var(--color-primary-dark);
}