/* ===== Blog Styles ===== */
/* Design System from CV and Homepage */

:root {
    /* Colors - Light Theme */
    --color-background: rgba(247, 247, 247, 1);
    --color-surface: rgba(255, 255, 255, 1);
    --color-primary: rgba(16, 16, 16, 1);
    --color-secondary: rgb(60, 60, 60);
    --color-tertiary: rgba(120, 120, 120, 1);
    --color-highlight: rgba(27, 27, 27, .08);
    --color-shadow: rgba(27, 27, 27, .05);
    --color-border: rgba(27, 27, 27, .1);
    --color-accent: #005c52;
    --color-accent-hover: #004a42;
    
    /* Typography */
    --font-family: "Figtree", system-ui, -apple-system, sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-xs: 0.75rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.2rem;
    --font-size-2xl: 1.75rem;
    --font-size-3xl: 2rem;

    /* Font Weights */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Layout */
    --header-height: 4rem;
    --container-width: 1400px;
}

/* Dark Theme */
@media (prefers-color-scheme: dark) {
    :root {
        --color-background: rgba(27, 27, 27, 1);
        --color-surface: rgba(35, 35, 35, 1);
        --color-primary: rgba(247, 247, 247, 1);
        --color-secondary: rgba(190, 190, 190, 1);
        --color-tertiary: rgba(140, 140, 140, 1);
        --color-highlight: rgba(247, 247, 247, .08);
        --color-shadow: rgba(0, 0, 0, .2);
        --color-border: rgba(247, 247, 247, .1);
        --color-accent: #70c2d4;
        --color-accent-hover: #8dd0dc;
    }
}

/* Base Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-primary);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* Header - CV Style */
.blog-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--color-background);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.header__content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    gap: var(--spacing-md);
}

.header__brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.header__logo {
    display: inline-flex;
    align-items: center;
    color: var(--color-secondary);
    transition: color var(--transition-base);
    flex-shrink: 0;
    cursor: pointer;
}

.header__logo:hover {
    color: var(--color-accent);
}

.logo-svg {
    width: 2rem;
    height: 2rem;
    fill: currentColor;
}

.header__title {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: var(--font-size-xl);
    color: var(--color-secondary);
    white-space: nowrap;
}

.header__separator {
    color: var(--color-tertiary);
    font-weight: var(--font-weight-normal);
    font-size: var(--font-size-xl);
}

.header__section {
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-xl);
    text-decoration: none;
    transition: color var(--transition-base);
}

.header__section:hover {
    color: var(--color-accent-hover);
}

.header__nav {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
}

.nav-link {
    color: var(--color-secondary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    position: relative;
    transition: all var(--transition-base);
    background: var(--color-highlight);
    border: 1px solid var(--color-border);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.nav-link.home-link {
    font-size: 1.25rem;
    padding: 0.5rem;
}

.nav-link:hover {
    color: var(--color-accent);
    background: var(--color-surface);
    border-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--color-shadow);
}

.nav-link.active {
    color: var(--color-accent);
    background: var(--color-surface);
    border-color: var(--color-accent);
}

@media (max-width: 768px) {
    .header__brand {
        gap: 0.25rem;
    }
    
    .header__title {
        font-size: var(--font-size-base);
    }
    
    .header__separator,
    .header__section {
        font-size: var(--font-size-base);
    }
    
    .logo-svg {
        width: 1.5rem;
        height: 1.5rem;
    }
    
    .header__nav {
        gap: 0.5rem;
    }
    
    .nav-link {
        font-size: var(--font-size-sm);
        padding: 0.5rem 0.65rem;
    }
    
    .nav-link.home-link {
        font-size: 1.125rem;
        padding: 0.5rem;
    }
}

/* Main Content */
.blog-main {
    padding: var(--spacing-2xl) 0;
    min-height: calc(100vh - var(--header-height) - 200px);
}

/* Blog Index */
.blog-index {
    animation: fadeIn 0.6s ease;
}

/* Blog Layout */
.blog-layout {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: var(--spacing-2xl);
    align-items: start;
}

@media (max-width: 1024px) {
    .blog-layout {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        order: 1;
    }
}

.blog-content {
    min-width: 0;
}

/* Blog Title */
.blog-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

@media (max-width: 768px) {
    .blog-title {
        font-size: var(--font-size-2xl);
    }
}

/* Post Card */
.post-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.post-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-accent), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.post-card:hover {
    box-shadow: 0 12px 32px var(--color-shadow);
    border-color: var(--color-accent);
}

.post-card:hover::before {
    opacity: 1;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-tertiary);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.post-meta-item {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    background-color: var(--color-highlight);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-medium);
}

.post-meta-divider {
    display: none;
}

.post-card-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.post-card-title a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-base);
    background: linear-gradient(to right, var(--color-accent), var(--color-accent)) no-repeat;
    background-size: 0% 2px;
    background-position: left bottom;
    transition: background-size var(--transition-base), color var(--transition-base);
}

.post-card-title a:hover {
    color: var(--color-accent);
    background-size: 100% 2px;
}

.post-excerpt {
    color: var(--color-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-lg);
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.tag {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    background-color: var(--color-highlight);
    color: var(--color-accent);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.tag:hover {
    background-color: var(--color-accent);
    color: white;
    transform: translateY(-2px);
    border-color: var(--color-accent);
}

/* Read More Link */
.read-more {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-base);
    text-decoration: none;
    transition: gap var(--transition-base), color var(--transition-base);
    padding: 0.5rem 1rem;
    background-color: var(--color-highlight);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
}

.read-more:hover {
    gap: 0.75rem;
    background-color: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
}

.read-more::after {
    content: '→';
    font-size: 1.2em;
}

/* Single Post */
.post-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.post-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

@media (max-width: 768px) {
    .post-title {
        font-size: var(--font-size-2xl);
    }
}

.post-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-tertiary);
    flex-wrap: wrap;
}

/* Post Content */
.post-content {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xl);
}

.post-content h2 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.post-content h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.post-content h4 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.post-content p {
    margin-bottom: var(--spacing-md);
}

.post-content a {
    color: var(--color-accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-base);
}

.post-content a:hover {
    border-bottom-color: var(--color-accent);
}

.post-content ul,
.post-content ol {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.post-content li {
    margin-bottom: var(--spacing-xs);
}

.post-content blockquote {
    border-left: 4px solid var(--color-accent);
    padding-left: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    font-style: italic;
    color: var(--color-secondary);
}

.post-content code {
    background-color: var(--color-highlight);
    padding: 0.2rem 0.4rem;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
    font-family: 'SF Mono', Monaco, Consolas, monospace;
}

.post-content pre {
    background-color: var(--color-highlight);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin-bottom: var(--spacing-md);
}

.post-content pre code {
    background-color: transparent;
    padding: 0;
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: var(--spacing-lg) 0;
}

/* Share Buttons */
.share-buttons {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    margin: var(--spacing-xl) 0;
}

.share-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-primary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-base);
}

.share-button:hover {
    background-color: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
}

/* Comments Section */
.comments-section {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.comments-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
}

.comment-form {
    background-color: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    background-color: var(--color-background);
    color: var(--color-primary);
    transition: border-color var(--transition-base);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.submit-button {
    background-color: var(--color-accent);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: background-color var(--transition-base);
}

.submit-button:hover {
    background-color: var(--color-accent-hover);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-2xl);
}

.pagination a,
.pagination span {
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-primary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-base);
}

.pagination a:hover {
    background-color: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
}

.pagination .active {
    background-color: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
}

.pagination .disabled {
    opacity: 0.5;
    pointer-events: none;
}

/* Footer */
.blog-footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-2xl);
    text-align: center;
    color: var(--color-secondary);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-links a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: color var(--transition-base);
}

.footer-links a:hover {
    color: var(--color-accent);
}

/* Utilities */
.text-center {
    text-align: center;
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

/* Responsive */
@media (max-width: 768px) {
    .share-buttons {
        flex-wrap: wrap;
    }
    
    .share-button {
        flex: 1 1 calc(50% - 0.5rem);
        justify-content: center;
    }
    
    .blog-layout {
        gap: var(--spacing-lg);
    }
    
    .sidebar-card {
        padding: var(--spacing-md);
    }
    
    .profile-image-wrapper {
        width: 80px;
        height: 80px;
    }
    
    /* Optimize post cards for mobile */
    .post-card {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-md);
        border-radius: var(--radius-md);
    }
    
    .post-card-title {
        font-size: var(--font-size-xl);
    }
    
    .post-excerpt {
        font-size: var(--font-size-base);
    }
    
    .post-meta {
        font-size: var(--font-size-xs);
    }
    
    .read-more {
        width: 100%;
        justify-content: center;
    }
}

/* Loading Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.post-card {
    animation: fadeIn 0.5s ease;
}

/* ===== Sidebar Styles ===== */
.sidebar {
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-md));
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

@media (max-width: 1024px) {
    .sidebar {
        position: static;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: var(--spacing-md);
    }
}

/* Sidebar Cards */
.sidebar-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
}

.sidebar-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--color-shadow);
}

.sidebar-card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

/* Profile Card */
.profile-card {
    text-align: center;
}

.profile-image-wrapper {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--spacing-md);
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 3px solid var(--color-accent);
    background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-name {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
    color: var(--color-primary);
}

.profile-title {
    font-size: var(--font-size-sm);
    color: var(--color-accent);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-sm);
}

.profile-bio {
    font-size: var(--font-size-sm);
    color: var(--color-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.profile-social {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

.profile-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background-color: var(--color-highlight);
    border-radius: var(--radius-full);
    color: var(--color-secondary);
    transition: all var(--transition-base);
}

.profile-social a:hover {
    background-color: var(--color-accent);
    color: white;
    transform: translateY(-2px);
}

/* Recent Posts Card */
.recent-posts-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.recent-post-item {
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.recent-post-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.recent-post-link {
    text-decoration: none;
    display: block;
    transition: all var(--transition-base);
}

.recent-post-link:hover {
    transform: translateX(4px);
}

.recent-post-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
    transition: color var(--transition-base);
}

.recent-post-link:hover .recent-post-title {
    color: var(--color-accent);
}

.recent-post-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--color-tertiary);
    margin-bottom: var(--spacing-xs);
}

.meta-separator {
    font-size: 0.6em;
}

.recent-post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.mini-tag {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    background-color: var(--color-highlight);
    color: var(--color-accent);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
}

/* Categories Card */
.categories-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.category-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-highlight);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-base);
}

.category-item:hover {
    background-color: var(--color-accent);
    transform: translateX(4px);
}

.category-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
}

.category-item:hover .category-name {
    color: white;
}

.category-count {
    font-size: var(--font-size-xs);
    color: var(--color-tertiary);
    background-color: var(--color-background);
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-semibold);
}

.category-item:hover .category-count {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
}