:root {
    --text-primary: rgb(55, 53, 47);
    --text-secondary: rgb(120, 119, 116);
    --background-primary: #ffffff;
    --background-secondary: #f7f6f3;
    --link-color: rgb(55, 53, 47);
    --link-hover: rgba(55, 53, 47, 0.7);
    --border-color: rgba(235, 235, 235);
    --code-background: rgba(135, 131, 120, 0.15);
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --success-color: #27ae60;
    --light-gray: #f5f5f5;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-primary);
    line-height: 1.5;
    background: var(--background-primary);
}

/* Layout */
.layout {
    display: grid;
    grid-template-columns: 280px 1000px;
    min-height: 100vh;
    margin: 0 auto;
    gap: 2rem;
    padding-left: 280px;
}

/* Sidebar Navigation */
.side-nav {
    background: var(--background-secondary);
    padding: 1.5rem;
    border-right: 1px solid var(--border-color);
    position: fixed;
    width: 280px;
    height: 100vh;
    overflow-y: auto;
    left: 0;
    top: 0;
}

.nav-header h1 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

.nav-group h2 {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    padding: 0 0.5rem;
}

.side-nav ul {
    list-style: none;
}

.side-nav li {
    margin-bottom: 0.25rem;
}

.side-nav a {
    display: flex;
    align-items: center;
    padding: 0.5rem;
    color: var(--link-color);
    text-decoration: none;
    border-radius: 3px;
    transition: background 0.2s ease;
}

.side-nav a:hover {
    background: rgba(55, 53, 47, 0.08);
}

.side-nav span {
    margin-right: 0.5rem;
    font-size: 1.1rem;
}

/* Main Content */
.content {
    padding: 2rem 3rem;
    width: 1000px;
    margin-left: 0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    margin: 1.5rem 0 1rem;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }

/* Links */
a {
    color: var(--link-color);
    text-decoration: none;
}

a:hover {
    color: var(--link-hover);
}

/* Code Blocks */
code {
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    background: var(--code-background);
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-size: 0.9em;
}

pre code {
    display: block;
    padding: 1rem;
    overflow-x: auto;
}

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.product-card {
    background: var(--background-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 1.5rem;
    transition: all 0.2s ease;
    position: relative;
}

.product-card:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.product-card h2 {
    margin-top: 1rem;
    font-size: 1.2rem;
}

.product-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 4px;
}

/* Product Detail Page */
.product-detail {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.product-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 2rem;
}

.product-image {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

.product-meta {
    display: flex;
    gap: 1rem;
    margin: 1rem 0;
    color: var(--text-secondary);
}

.product-pros-cons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 2rem 0;
}

.pros ul, .cons ul {
    list-style: none;
    padding: 0;
}

.pros li::before {
    content: "✓";
    color: #27ae60;
    margin-right: 0.5rem;
}

.cons li::before {
    content: "×";
    color: #e74c3c;
    margin-right: 0.5rem;
}

.product-features ul {
    list-style: none;
    padding: 0;
}

.product-features li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.product-features li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.review-content {
    line-height: 1.6;
    margin: 1rem 0;
}

/* Product Comparison */
.product-comparison {
    margin-bottom: 1rem;
    padding: 1.5rem;
    background: var(--background-secondary);
    border-radius: 8px;
}

.product-comparison h3 {
    margin-top: 0;
    margin-bottom: 1rem;
}

.product-comparison select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
    background: white;
}

.product-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

/* Blog Styles */
.blog-list {
    max-width: 1200px;
    margin: 0 auto;
}

.post-card {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.post-meta {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0.5rem 0;
}

.post-content {
    margin-top: 2rem;
}

/* Buttons */
.button {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    border-radius: 4px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
}

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

.button-primary:hover {
    background-color: var(--link-hover);
    color: white;
}

.button-secondary {
    background-color: var(--background-secondary);
    color: var(--text-primary);
}

.button-secondary:hover {
    background-color: var(--border-color);
}

/* Breadcrumb */
.breadcrumb {
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

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

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

/* Responsive Design */
@media (max-width: 1300px) {
    .layout {
        grid-template-columns: 280px minmax(0, 1fr);
        padding-left: 280px;
    }

    .content {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .layout {
        grid-template-columns: 1fr;
        padding-left: 0;
    }

    .side-nav {
        position: static;
        width: 100%;
        height: auto;
    }

    .content {
        margin-left: 0;
        padding: 1rem;
    }

    .product-images {
        grid-template-columns: 1fr;
    }

    .product-pros-cons {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.mt-2 { margin-top: 2rem; }
.mb-2 { margin-bottom: 2rem; }

/* Blog Posts Grid */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

/* Comparison Page Styles */
.comparison-page {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.comparison-table {
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin: 2rem 0;
    overflow: hidden;
}

.comparison-row {
    display: grid;
    grid-template-columns: 200px 1fr 1fr;
    border-bottom: 1px solid var(--border-color);
}

.comparison-row:last-child {
    border-bottom: none;
}

.comparison-row.header {
    background-color: var(--background-secondary);
    font-weight: 600;
}

.comparison-row .label {
    padding: 1.5rem;
    background-color: var(--background-secondary);
    font-weight: 500;
    border-right: 1px solid var(--border-color);
}

.comparison-row .value {
    padding: 1.5rem;
    border-right: 1px solid var(--border-color);
}

.comparison-row .value:last-child {
    border-right: none;
}

.comparison-image {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

/* Feature Lists in Comparison */
.feature-list, .pros-list, .cons-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-list li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.feature-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* Pros and Cons in Comparison */
.pros-list li, .cons-list li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.pros-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #27ae60;
}

.cons-list li::before {
    content: "×";
    position: absolute;
    left: 0;
    color: #e74c3c;
}

/* Comparison Actions */
.comparison-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

.comparison-actions .button {
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    text-decoration: none;
    background-color: var(--primary-color);
    color: white;
    transition: background-color 0.2s ease;
}

.comparison-actions .button:hover {
    background-color: var(--secondary-color);
}

/* Product Comparison Select */
.product-comparison {
    margin: 2rem 0;
    padding: 1.5rem;
    background: var(--background-secondary);
    border-radius: 8px;
}

.product-comparison select {
    width: 100%;
    padding: 0.75rem;
    margin-top: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
    background: white;
}

/* Responsive Design */
@media (max-width: 768px) {
    .comparison-row {
        grid-template-columns: 1fr;
    }

    .comparison-row .label {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .comparison-row .value {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .comparison-row .value:last-child {
        border-bottom: none;
    }

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

/* Product Badge */
.product-badge.top-choice {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: #e74c3c;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 500;
    z-index: 1;
}