/* ==========================================================================
   DESIGN SYSTEM - MEDIUM STYLING BY ANTIGRAVITY
   ========================================================================== */

:root {
  --bg-primary: #ffffff;
  --bg-secondary: #fafafa;
  --text-primary: #191919;
  --text-secondary: #757575;
  --accent-green: #1a8917;
  --accent-green-hover: #156f12;
  --border-color: #f2f2f2;
  --border-darker: #e6e6e6;
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-title: 'Outfit', var(--font-sans);
  --font-serif: 'Lora', Georgia, Cambria, "Times New Roman", Times, serif;
  
  --max-width-site: 1192px;
  --max-width-reading: 700px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.15s ease;
}

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

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-title);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
}

/* Shared UI Components */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  border-radius: 99px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  font-family: var(--font-sans);
}

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

.btn-primary:hover {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  border-color: var(--text-primary);
}

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

.btn-outline:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

/* Section divider */
.section-divider {
  border: 0;
  height: 1px;
  background-color: var(--border-darker);
  margin: 40px 0;
}

/* HEADER STYLE */
.site-header {
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  z-index: 100;
  transition: all 0.2s ease;
}

.header-container {
  max-width: var(--max-width-site);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  font-family: var(--font-title);
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -1.0px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
}

.site-logo span {
  position: relative;
}

.site-logo span::after {
  content: '';
  position: absolute;
  bottom: 2px;
  right: -8px;
  width: 6px;
  height: 6px;
  background-color: var(--accent-green);
  border-radius: 50%;
}

.header-nav {
  display: flex;
  gap: 24px;
}

.nav-link {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 400;
}

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

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* HOMEPAGE CONTAINER */
.homepage-container {
  max-width: var(--max-width-site);
  margin: 0 auto;
  padding: 40px 24px;
}

/* HERO SECTION GRID (Medium homepage style) */
.hero-section {
  margin-bottom: 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.8fr 1.2fr;
  gap: 48px;
}

/* Featured Post style */
.featured-post {
  display: flex;
  flex-direction: column;
}

.featured-image-wrapper {
  width: 100%;
  height: 380px;
  border-radius: 6px;
  margin-bottom: 24px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}

.featured-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.featured-post:hover .featured-image {
  transform: scale(1.02);
}

.featured-meta {
  display: flex;
  align-items: center;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 12px;
}

.post-category {
  color: var(--accent-green);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.post-reading-time {
  color: var(--text-secondary);
  margin-left: 6px;
}

.featured-title {
  font-size: 32px;
  margin-bottom: 12px;
  line-height: 1.15;
  letter-spacing: -0.5px;
}

.featured-title a:hover {
  color: var(--accent-green);
}

.featured-excerpt {
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

/* Author block metadata */
.post-author-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar-sm {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--border-darker);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
}

.author-details-sm {
  display: flex;
  flex-direction: column;
}

.author-name-sm {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.post-date-sm {
  font-size: 12px;
  color: var(--text-secondary);
}

/* Trending Sidebar list */
.trending-sidebar {
  display: flex;
  flex-direction: column;
}

.section-title-sm {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-primary);
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
}

.trending-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.trending-item {
  display: flex;
  gap: 20px;
}

.trending-number {
  font-size: 32px;
  font-weight: 800;
  color: var(--border-darker);
  font-family: var(--font-title);
  line-height: 1;
}

.trending-content {
  display: flex;
  flex-direction: column;
}

.trending-meta {
  display: flex;
  align-items: center;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 6px;
}

.post-category-sm {
  color: var(--accent-green);
}

.post-reading-time-sm {
  color: var(--text-secondary);
  margin-left: 4px;
}

.trending-title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 4px;
}

.trending-title a:hover {
  color: var(--accent-green);
}

/* MAIN FEED & SIDEBAR LAYOUT */
.main-feed-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 64px;
}

.section-title {
  font-size: 22px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

/* Feed List items */
.feed-list {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.feed-item {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border-color);
}

.feed-item-content {
  flex: 1;
}

.feed-item-meta {
  display: flex;
  align-items: center;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 8px;
}

.feed-item-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.3;
}

.feed-item-title a:hover {
  color: var(--accent-green);
}

.feed-item-excerpt {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.feed-item-footer {
  display: flex;
  align-items: center;
  font-size: 13px;
  color: var(--text-secondary);
}

.feed-item-thumbnail {
  width: 112px;
  height: 112px;
  border-radius: 4px;
  overflow: hidden;
  flex-shrink: 0;
  align-self: center;
  border: 1px solid var(--border-color);
}

.feed-thumbnail-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.feed-item:hover .feed-thumbnail-img {
  transform: scale(1.05);
}

/* Sidebar Styling */
.feed-sidebar {
  display: flex;
  flex-direction: column;
  gap: 48px;
  position: sticky;
  top: 100px;
  align-self: start;
}

.sidebar-widget {
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-widget h4 {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.about-widget p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 12px;
}

.sidebar-link-btn {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-green);
}

.sidebar-link-btn:hover {
  color: var(--accent-green-hover);
}

/* Topics Grid */
.topics-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.topic-tag {
  background-color: var(--bg-secondary);
  padding: 8px 16px;
  border-radius: 99px;
  font-size: 13px;
  color: var(--text-primary);
  border: 1px solid var(--border-darker);
}

.topic-tag:hover {
  background-color: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}

.topic-tag.active {
  background-color: var(--accent-green);
  color: var(--bg-primary);
  border-color: var(--accent-green);
}

/* Tags Grid */
.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag-item {
  font-size: 12px;
  color: var(--text-secondary);
  background-color: var(--bg-secondary);
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
}

.tag-item:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

/* SINGLE POST PAGE VIEW */
.single-post-container {
  max-width: var(--max-width-reading);
  margin: 0 auto;
  padding: 56px 24px;
}

.post-header {
  margin-bottom: 36px;
}

.post-hero-image-container {
  width: 100%;
  max-height: 440px;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 40px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
}

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

.post-header-meta {
  display: flex;
  align-items: center;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}

.post-header-category {
  color: var(--accent-green);
  text-transform: uppercase;
}

.post-header-reading-time {
  color: var(--text-secondary);
  margin-left: 6px;
}

.post-title {
  font-size: 40px;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -1.0px;
}

/* Author panel details */
.post-author-panel {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 0;
  border-top: 1px solid var(--border-color);
}

.author-avatar-lg {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--text-primary);
  color: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  font-family: var(--font-title);
}

.author-panel-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.author-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.author-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.btn-follow-sm {
  background: none;
  border: none;
  color: var(--accent-green);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
}

.btn-follow-sm:hover {
  color: var(--accent-green-hover);
}

.post-row {
  display: flex;
  align-items: center;
  font-size: 13px;
  color: var(--text-secondary);
  gap: 6px;
}

/* Medium Action Bar */
.post-actions-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  margin-top: 16px;
}

.action-btn {
  background: none;
  border: none;
  font-size: 16px;
  cursor: pointer;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
  padding: 6px 12px;
  border-radius: 99px;
}

.action-btn:hover {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

.clap-btn.clapped {
  color: var(--accent-green);
  font-weight: 700;
  background-color: rgba(26, 137, 23, 0.05);
}

.actions-left, .actions-right {
  display: flex;
  gap: 12px;
}

/* ARTICLE CONTENT TYPOGRAPHY - THE CRITICAL CORE READABILITY */
.post-content-body {
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 1.6;
  color: #292929;
  letter-spacing: -0.03px;
  margin-bottom: 48px;
}

.post-content-body p {
  margin-bottom: 28px;
}

.post-content-body h2 {
  font-family: var(--font-title);
  font-size: 28px;
  font-weight: 700;
  margin-top: 48px;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.post-content-body h3 {
  font-family: var(--font-title);
  font-size: 22px;
  font-weight: 700;
  margin-top: 36px;
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}

/* Style normal links in body */
.post-content-body a {
  color: var(--text-primary);
  text-decoration: underline;
  text-decoration-color: var(--border-darker);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.2s ease;
}

.post-content-body a:hover {
  color: var(--accent-green);
  text-decoration-color: var(--accent-green);
}

.post-content-body ul, .post-content-body ol {
  margin-bottom: 28px;
  padding-left: 28px;
}

.post-content-body li {
  margin-bottom: 12px;
}

.post-content-body blockquote {
  border-left: 3px solid var(--text-primary);
  padding-left: 24px;
  font-style: italic;
  font-size: 22px;
  line-height: 1.5;
  color: var(--text-secondary);
  margin: 36px 0;
}

/* SINGLE POST FOOTER & BIO */
.post-footer {
  border-top: 1px solid var(--border-color);
  padding-top: 32px;
}

.post-tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.post-tag-btn {
  background-color: var(--bg-secondary);
  padding: 8px 16px;
  border-radius: 99px;
  font-size: 13px;
  color: var(--text-secondary);
  border: 1px solid var(--border-darker);
}

.post-tag-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-primary);
}

.bottom-bar {
  margin: 24px 0 48px 0;
}

/* Bio card style */
.post-author-bio-card {
  display: flex;
  gap: 24px;
  background-color: var(--bg-secondary);
  padding: 32px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  margin-bottom: 48px;
}

.bio-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background-color: var(--text-primary);
  color: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  font-family: var(--font-title);
  flex-shrink: 0;
}

.bio-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: start;
}

.bio-content h3 {
  font-size: 18px;
  font-weight: 700;
}

.bio-content p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Comments Section Placeholder */
.post-comments-section {
  border-top: 1px solid var(--border-color);
  padding-top: 32px;
}

.post-comments-section h3 {
  font-size: 18px;
  margin-bottom: 16px;
}

.comments-placeholder-text {
  font-size: 14px;
  color: var(--text-secondary);
  background-color: var(--bg-secondary);
  padding: 20px;
  border-radius: 6px;
  text-align: center;
  border: 1px dashed var(--border-darker);
}

/* LIST PAGE (Category & Tag listing) */
.list-page-container {
  max-width: var(--max-width-site);
  margin: 0 auto;
  padding: 56px 24px;
}

.list-header {
  margin-bottom: 24px;
}

.list-pre-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-green);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.list-title {
  font-size: 44px;
  font-weight: 800;
  margin: 8px 0;
  letter-spacing: -1.0px;
}

.list-count {
  font-size: 15px;
  color: var(--text-secondary);
}

.list-feed-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 64px;
}

/* FOOTER STYLE */
.site-footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 64px 24px 40px 24px;
  margin-top: 80px;
}

.footer-container {
  max-width: var(--max-width-site);
  margin: 0 auto;
}

/* Newsletter block */
.footer-newsletter {
  max-width: 560px;
  margin: 0 auto 56px auto;
  text-align: center;
}

.footer-newsletter h3 {
  font-size: 24px;
  margin-bottom: 12px;
}

.footer-newsletter p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.5;
}

.newsletter-form {
  display: flex;
  gap: 12px;
}

.form-input {
  flex: 1;
  padding: 12px 20px;
  border-radius: 99px;
  border: 1px solid var(--border-darker);
  font-size: 14px;
  font-family: var(--font-sans);
  outline: none;
  background-color: var(--bg-primary);
}

.form-input:focus {
  border-color: var(--text-primary);
}

.footer-divider {
  border: 0;
  height: 1px;
  background-color: var(--border-darker);
  margin-bottom: 40px;
}

/* Footer Bottom elements */
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 32px;
}

.footer-author-card {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 440px;
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--text-primary);
  color: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  font-family: var(--font-title);
  flex-shrink: 0;
}

.author-info h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 4px;
}

.author-info p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.footer-links-copyright {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.footer-links {
  display: flex;
  gap: 20px;
  font-size: 13px;
  color: var(--text-secondary);
}

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

.copyright {
  font-size: 12px;
  color: var(--text-secondary);
}

/* RESPONSIVE LAYOUT BREAKPOINTS */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .main-feed-layout, .list-feed-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .feed-sidebar {
    position: static;
    margin-top: 24px;
  }
  
  .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  .footer-author-card {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-links-copyright {
    align-items: center;
  }
}

@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    gap: 16px;
  }
  
  .header-nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }
  
  .post-card-image-placeholder {
    height: 200px;
  }
  
  .featured-title {
    font-size: 26px;
  }
  
  .post-title {
    font-size: 30px;
  }
  
  .feed-item {
    gap: 20px;
  }
  
  .feed-item-thumbnail {
    width: 80px;
    height: 80px;
    font-size: 18px;
  }
  
  .newsletter-form {
    flex-direction: column;
  }
  
  .form-input {
    border-radius: 24px;
  }
}