/* Modern Blog System CSS */

/* CSS Variables */
:root {
    --color-primary: #111827;
    /* Near Black */
    --color-primary-dark: #000000;
    --color-secondary: #4b5563;
    --color-personal: #374151;
    --color-tech: #4b5563;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-bg: #ffffff;
    --color-bg-alt: #f9fafb;
    --color-border: #e5e7eb;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius: 0.75rem;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navigation */
.main-nav {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.9);
}

.main-nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.nav-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    transition: var(--transition);
}

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

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--color-text-light);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-primary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

/* Page Header */
.page-header {
    padding: 4rem 0 3rem;
    text-align: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.page-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.page-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
}

/* Blog Filters */
.blog-filters {
    padding: 3rem 0 2rem;
}

.filter-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text);
    border-radius: 9999px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
}

.filter-btn:hover {
    border-color: var(--color-text);
    color: var(--color-text);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: var(--color-text);
    border-color: var(--color-text);
    color: white;
}

/* Post Tags */
.post-tags {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.post-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--color-bg-alt);
    color: var(--color-text-light);
    border: 1px solid var(--color-border);
}

.post-tag.personal,
.post-tag.tech {
    /* Override specific colors with neutral */
    background: var(--color-bg-alt);
    color: var(--color-text-light);
}

/* Blog Grid */
.blog-section {
    padding: 4rem 0;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.blog-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: var(--transition);
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.blog-card-header {
    margin-bottom: 1rem;
}

.blog-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.blog-category.personal {
    background: rgba(236, 72, 153, 0.1);
    color: var(--color-personal);
}

.blog-category.tech {
    background: rgba(6, 182, 212, 0.1);
    color: var(--color-tech);
}

.blog-card-title {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.blog-card-description {
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.blog-card-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
}

.blog-card-posts {
    border-top: 1px solid var(--color-border);
    padding-top: 1.5rem;
}

.blog-card-posts h3 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-light);
    margin-bottom: 1rem;
}

.blog-card-posts ul {
    list-style: none;
}

.blog-card-posts li {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-border);
}

.blog-card-posts li:last-child {
    border-bottom: none;
}

.blog-card-posts a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    flex: 1;
}

.blog-card-posts a:hover {
    color: var(--color-primary);
}

.blog-card-posts time {
    font-size: 0.875rem;
    color: var(--color-text-light);
    white-space: nowrap;
    margin-left: 1rem;
}

/* All Posts Section */
.all-posts {
    padding: 4rem 0;
}

.all-posts h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
}

.posts-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.post-item {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 2rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

.post-item:hover {
    background: var(--color-bg-alt);
    padding-left: 1rem;
    padding-right: 1rem;
    margin-left: -1rem;
    margin-right: -1rem;
}

.post-date {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

.post-info {
    display: flex;
    align-items: baseline;
    gap: 1rem;
}

.post-item-title {
    font-size: 1.125rem;
    font-weight: 600;
    flex: 1;
}

.post-item-title a {
    color: var(--color-text);
    text-decoration: none;
    transition: var(--transition);
}

.post-item-title a:hover {
    color: var(--color-primary);
}

.post-blog-label {
    font-size: 0.875rem;
    color: var(--color-text-light);
    white-space: nowrap;
}

/* Individual Post */
.post-header {
    padding: 2rem 0;
    text-align: center;
    color: var(--color-text);
}

.post-meta {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.post-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
}

.post-content {
    padding: 4rem 0;
    max-width: 800px;
    margin: 0 auto;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-weight: 700;
    line-height: 1.3;
}

.post-content h1 {
    font-size: 2.25rem;
}

.post-content h2 {
    font-size: 1.875rem;
}

.post-content h3 {
    font-size: 1.5rem;
}

.post-content h4 {
    font-size: 1.25rem;
}

.post-content p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.post-content a {
    color: var(--color-primary);
    text-decoration: underline;
    transition: var(--transition);
}

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

.post-content ul,
.post-content ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.post-content li {
    margin-bottom: 0.5rem;
}

.post-content code {
    background: var(--color-bg-alt);
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-size: 0.875em;
    font-family: 'Courier New', monospace;
}

.post-content blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: 1.5rem;
    margin: 2rem 0;
    font-style: italic;
    color: var(--color-text-light);
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    margin: 2rem 0;
}

/* Post Footer */
.post-footer {
    padding: 3rem 0;
    border-top: 1px solid var(--color-border);
}

.post-navigation {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.post-nav-link {
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    text-decoration: none;
    transition: var(--transition);
}

.post-nav-link:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.post-nav-link.next {
    text-align: right;
}

.post-nav-label {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-bottom: 0.5rem;
}

.post-nav-title {
    font-weight: 600;
    color: var(--color-text);
}

.btn-back {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--color-primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius);
    font-weight: 600;
    transition: var(--transition);
}

.btn-back:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Footer */
.main-footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    padding: 2rem 0;
    text-align: center;
    color: var(--color-text-light);
    margin-top: 4rem;
}

/* Responsive */
@media (max-width: 768px) {
    .page-title {
        font-size: 2rem;
    }

    .post-title {
        font-size: 2rem;
    }

    .blog-grid {
        grid-template-columns: 1fr;
    }

    .post-item {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .nav-links {
        gap: 1rem;
    }
}

/* Hero Section */
.hero {
    padding: 6rem 0;
    text-align: center;
    background: linear-gradient(to bottom, transparent, var(--color-bg-alt));
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.code-quote {
    text-align: left;
    display: inline-block;
    background: #1e1e1e;
    color: #d4d4d4;
    padding: 1.5rem;
    border-radius: var(--radius);
    margin: 1rem 0 2rem;
    box-shadow: var(--shadow-lg);
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    max-width: 100%;
    overflow-x: auto;
    /* Allow scrolling if needed as fallback */
}

.code-quote pre {
    white-space: pre-wrap;
    /* Wrap long lines */
    word-break: break-word;
    margin: 0;
}

.hero-image {
    margin: 0 0 2rem;
}

.hero-profile-img {
    display: block;
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: var(--shadow-md);
    margin: 1.5rem auto;
    max-width: 100%;
}

.calvin-img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    max-height: 300px;
}

.hero-intro {
    font-size: 1.25rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

.hero-links-grid {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    max-width: 800px;
    margin: 0 auto;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    min-width: 140px;
}

.btn-primary {
    background: var(--color-personal);
    /* iLatish Pink */
    color: white;
    border: 2px solid var(--color-personal);
}

.btn-primary:hover {
    background: transparent;
    color: var(--color-personal);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--color-tech);
    /* Techno Blue */
    color: white;
    border: 2px solid var(--color-tech);
}

.btn-secondary:hover {
    background: transparent;
    color: var(--color-tech);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

.btn-outline:hover {
    border-color: var(--color-text);
    background: var(--color-text);
    color: var(--color-bg);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Featured Posts */
.featured-posts {
    padding: 4rem 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 2rem;
}

.view-all {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.post-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: var(--transition);
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.post-card h3 {
    margin: 0.5rem 0;
    font-size: 1.25rem;
}

.post-card h3 a {
    color: var(--color-text);
    text-decoration: none;
}

.post-card p {
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* About Page */
.about-section {
    padding: 4rem 0;
    max-width: 800px;
}

.about-header {
    text-align: center;
    margin-bottom: 3rem;
}

.about-card {
    background: var(--color-bg);
    border-radius: var(--radius);
    padding: 2rem;
    display: flex;
    gap: 3rem;
    align-items: flex-start;
}

.profile-image img {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: var(--shadow-md);
}

.bio-text {
    flex: 1;
}

.lead {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.divider {
    border: 0;
    height: 1px;
    background: var(--color-border);
    margin: 2rem 0;
}

.email-link {
    color: var(--color-primary);
    text-decoration: underline;
    font-weight: 500;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    background: var(--color-bg-alt);
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    font-size: 0.9rem;
}

.social-btn:hover {
    background: var(--color-border);
}

.social-btn.github:hover {
    color: #333;
}

.social-btn.linkedin:hover {
    color: #0077b5;
}


/* Responsive Navigation - Minimal Wrap */
@media (max-width: 768px) {
    .main-nav .container {
        flex-direction: column;
        align-items: center;
        /* Center Brand */
        gap: 0.75rem;
        padding: 1rem 0;
    }

    .nav-brand {
        padding: 0;
        margin-bottom: 0;
    }

    .nav-links {
        display: flex;
        width: 100%;
        flex-wrap: wrap;
        /* Allow wrapping */
        justify-content: center;
        /* Center links */
        gap: 0.75rem 1rem;
        /* Vertical, Horizontal gap */
        padding: 0 1rem;
        overflow-x: visible;
        /* No scroll */
    }

    .nav-links a {
        font-size: 0.9rem;
        padding: 0.25rem 0;
        white-space: nowrap;
    }

    /* Hero & Typography */
    .hero-title,
    .page-title-minimal {
        font-size: 2.5rem;
    }

    .hero-intro,
    .page-subtitle-minimal {
        font-size: 1.1rem;
        padding: 0 1rem;
    }

    /* Layout Adjustments */
    .about-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 2rem;
    }

    .social-links {
        justify-content: center;
        flex-wrap: wrap;
    }

    .hero-links-grid {
        flex-direction: column;
        align-items: stretch;
        padding: 0 2rem;
    }

    .hero-profile-img {
        width: 180px;
        height: 180px;
    }
}

@media (max-width: 480px) {

    /* Small Screens */
    .container {
        padding: 0 1.25rem;
    }

    .hero-title,
    .page-title-minimal {
        font-size: 2rem;
    }

    .post-title {
        font-size: 1.75rem;
    }

    .nav-links {
        font-size: 0.9rem;
    }

    .blog-grid {
        grid-template-columns: 1fr;
        /* Force single column */
    }

    .hero-profile-img {
        width: 140px;
        height: 140px;
    }
}

/* Minimalist Page Header */
.page-header-minimal {
    padding: 6rem 0 2rem;
    text-align: center;
}

.page-title-minimal {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.page-subtitle-minimal {
    font-size: 1.25rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

.social-btn.chess:hover {
    color: #7fa650;
}