/* ============================================
   Coffee Industry Portal - Main Stylesheet
   Version: 1.0.0
   ============================================ */

/* CSS Variables */
:root {
  --color-primary: #3D2914;
  --color-secondary: #F5E6D3;
  --color-accent: #C17817;
  --color-text: #2C2C2C;
  --color-text-light: #666666;
  --color-text-muted: #888888;
  --color-bg: #FFFFFF;
  --color-bg-alt: #FAF7F2;
  --color-border: #E8DDD0;
  --color-border-light: #F0E8DE;
  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --line-height-tight: 1.25;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --container-max: 1200px;
  --header-height: 55px;
}

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

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

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

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input,
textarea {
  font-family: inherit;
  font-size: inherit;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* ============================================
 Header
 ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

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

.main-nav {
  display: flex;
}

.nav-list {
  display: flex;
  gap: var(--spacing-xl);
}

.nav-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
  padding: var(--spacing-sm) 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-normal);
}

.nav-link:hover::after {
  width: 100%;
}

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

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
}

.hamburger-line {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-primary);
  transition: transform var(--transition-normal), opacity var(--transition-fast);
}

.menu-toggle.active .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================
 Main Content
 ============================================ */
.site-main {
  min-height: calc(100vh - var(--header-height) - 120px);
}

/* ============================================
 Section Titles
 ============================================ */
.section-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

/* ============================================
 Featured Section (Homepage)
 ============================================ */
.featured-section {
  padding: var(--spacing-3xl) 0;
  background-color: var(--color-bg-alt);
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 280px);
  gap: var(--spacing-lg);
}

.featured-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-bg);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.featured-large {
  grid-column: span 2;
  grid-row: span 2;
  display: flex;
  flex-direction: column;
}

.featured-small {
  display: flex;
  flex-direction: column;
}

.featured-image-link {
  display: block;
  position: relative;
  overflow: hidden;
  flex: 1;
}

.featured-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.featured-card:hover .featured-image {
  transform: scale(1.05);
}

.featured-content {
  padding: var(--spacing-lg);
  background-color: var(--color-bg);
}

.featured-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-sm);
}

.featured-title a {
  color: var(--color-primary);
}

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

.featured-large .featured-title {
  font-size: var(--font-size-2xl);
}

.featured-brief {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: var(--line-height-normal);
  margin-bottom: var(--spacing-md);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.featured-meta {
  display: flex;
  gap: var(--spacing-md);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.meta-date,
.meta-views {
  display: inline-flex;
  align-items: center;
}

/* ============================================
 Categories Section (Homepage)
 ============================================ */
.categories-section {
  padding: var(--spacing-3xl) 0;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--spacing-md);
}

.category-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

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

.category-card:hover .category-icon {
  transform: translateX(4px);
}

.category-number {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-accent);
  min-width: 24px;
}

.category-label {
  flex: 1;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
}

.category-icon {
  font-size: var(--font-size-sm);
  color: var(--color-accent);
  transition: transform var(--transition-normal);
}

/* ============================================
 Latest Articles Section (Homepage)
 ============================================ */
.latest-section {
  padding: var(--spacing-3xl) 0;
  background-color: var(--color-bg-alt);
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-xl);
}

.article-card {
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.article-image-link {
  display: block;
  position: relative;
  padding-top: 75%;
  overflow: hidden;
}

.article-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.article-card:hover .article-image {
  transform: scale(1.05);
}

.article-content {
  padding: var(--spacing-lg);
}

.article-category {
  margin-bottom: var(--spacing-sm);
}

.category-badge {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.article-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-sm);
}

.article-title a {
  color: var(--color-primary);
}

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

.article-brief {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: var(--line-height-normal);
  margin-bottom: var(--spacing-md);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.meta-divider {
  color: var(--color-border);
}

/* ============================================
 Page Layout (Category, Detail, More)
 ============================================ */
.page-container {
  padding-top: var(--spacing-2xl);
  padding-bottom: var(--spacing-3xl);
}

.page-content {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: var(--spacing-2xl);
}

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

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

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.breadcrumb-item:not(:last-child)::after {
  content: '>';
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

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

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

.breadcrumb-item.active {
  color: var(--color-text-muted);
}

/* Page Title */
.page-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xl);
}

/* ============================================
 Article List (Category, More)
 ============================================ */
.article-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.list-item {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--spacing-lg);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border-light);
}

.list-item:last-child {
  border-bottom: none;
}

.list-image-link {
  display: block;
  position: relative;
  padding-top: 75%;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.list-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.list-item:hover .list-image {
  transform: scale(1.05);
}

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

.list-category {
  margin-bottom: var(--spacing-sm);
}

.list-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-sm);
}

.list-title a {
  color: var(--color-primary);
}

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

.list-brief {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: var(--line-height-normal);
  margin-bottom: var(--spacing-md);
  flex: 1;
}

.list-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* ============================================
 Sidebar
 ============================================ */
/* .sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--spacing-xl));
} */

.sidebar-section {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.sidebar-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-accent);
}

/* Author Section in Sidebar */
.author-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.author-avatar-link {
  flex-shrink: 0;
}

.author-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
}

.author-info {
  flex: 1;
}

.author-name {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

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

.author-brief {
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
  line-height: var(--line-height-normal);
}

/* Category List in Sidebar */
.category-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.category-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) 0;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border-light);
  transition: all var(--transition-fast);
}

.category-link:hover {
  color: var(--color-accent);
  padding-left: var(--spacing-sm);
}

.category-link:hover .category-arrow {
  transform: translateX(4px);
}

.category-arrow {
  color: var(--color-accent);
  transition: transform var(--transition-fast);
}

/* Recent List in Sidebar */
.recent-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.recent-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.recent-date {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.recent-link {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  line-height: var(--line-height-tight);
}

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

/* ============================================
 Pagination
 ============================================ */
.pagination-nav {
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border-light);
}

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

.page-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--spacing-sm);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.page-link {
  color: var(--color-text);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
}

.page-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.page-item.current {
  color: var(--color-bg);
  background-color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

.page-item.disabled {
  color: var(--color-text-muted);
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
  cursor: not-allowed;
}

.page-item.ellipsis {
  color: var(--color-text-muted);
  cursor: default;
}

/* ============================================
 Article Detail Page
 ============================================ */
.article-detail {
  max-width: 800px;
}

.article-header {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-light);
}

.article-headline {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-lg);
}

.article-meta-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.meta-left {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.author-mini {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.author-mini-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.author-mini-name {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
}

.author-mini:hover .author-mini-name {
  color: var(--color-accent);
}

.meta-published,
.meta-updated,
.meta-views {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* Article Body */
.article-body {
  font-size: var(--font-size-md);
  line-height: var(--line-height-relaxed);
  color: var(--color-text);
}

.article-body p {
  margin-bottom: var(--spacing-lg);
}

.article-body h2,
.article-body h3,
.article-body h4 {
  font-weight: 600;
  color: var(--color-primary);
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-md);
}

.article-body h2 {
  font-size: var(--font-size-xl);
}

.article-body h3 {
  font-size: var(--font-size-lg);
}

.article-body h4 {
  font-size: var(--font-size-md);
}

.article-body ul,
.article-body ol {
  margin-bottom: var(--spacing-lg);
  padding-left: var(--spacing-xl);
}

.article-body ul {
  list-style: disc;
}

.article-body ol {
  list-style: decimal;
}

.article-body li {
  margin-bottom: var(--spacing-sm);
}

.article-body img {
  max-width: 100%;
  height: auto;
  margin: var(--spacing-xl) auto;
  border-radius: var(--radius-md);
  display: block;
}

.article-body blockquote {
  margin: var(--spacing-xl) 0;
  padding: var(--spacing-lg) var(--spacing-xl);
  border-left: 4px solid var(--color-accent);
  background-color: var(--color-bg-alt);
  font-style: italic;
}

.article-body a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

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

/* Author Box */
.author-box {
  margin-top: var(--spacing-2xl);
  padding: var(--spacing-xl);
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-md);
}

.author-profile {
  display: flex;
  gap: var(--spacing-lg);
}

.author-avatar-large {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
}

.author-details {
  flex: 1;
}

.author-name-link {
  display: inline-block;
  margin-bottom: var(--spacing-sm);
}

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

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

.author-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
}

.author-bio {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  line-height: var(--line-height-normal);
}

/* Article Navigation */
.article-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border-light);
}

.nav-prev,
.nav-next {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

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

.nav-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-primary);
  line-height: var(--line-height-tight);
}

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

/* Related Articles */
.related-articles {
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border-light);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--spacing-lg);
}

.related-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.related-image-link {
  display: block;
  position: relative;
  padding-top: 75%;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.related-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.related-card:hover .related-image {
  transform: scale(1.05);
}

.related-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.related-category {
  font-size: var(--font-size-xs);
}

.related-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: var(--line-height-tight);
}

.related-title a {
  color: var(--color-primary);
}

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

.related-meta {
  display: flex;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.related-brief {
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
  line-height: var(--line-height-normal);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.comment-form {
  max-width: 600px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

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

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast);
}

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

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

.form-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-xl);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-bg);
  background-color: var(--color-accent);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.form-submit:hover {
  background-color: var(--color-primary);
}

/* ============================================
 Author Page
 ============================================ */
.author-page {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-2xl) 0;
}

.author-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border-light);
}

.author-avatar-wrap {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--color-secondary);
}

.author-avatar-xl {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-page-name {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-primary);
}

.author-page-description {
  font-size: var(--font-size-md);
  color: var(--color-text-light);
  max-width: 500px;
}

.author-content {
  font-size: var(--font-size-md);
  line-height: var(--line-height-relaxed);
  color: var(--color-text);
}

.author-bio-full p {
  margin-bottom: var(--spacing-lg);
}

/* ============================================
 Standalone Page (About, etc.)
 ============================================ */
.standalone-page {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-2xl) 0;
}

.standalone-header {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-light);
}

.standalone-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-primary);
}

.standalone-content {
  font-size: var(--font-size-md);
  line-height: var(--line-height-relaxed);
  color: var(--color-text);
}

.standalone-content p {
  margin-bottom: var(--spacing-lg);
}

.standalone-content h2,
.standalone-content h3 {
  font-weight: 600;
  color: var(--color-primary);
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-md);
}

.standalone-content h2 {
  font-size: var(--font-size-xl);
}

.standalone-content h3 {
  font-size: var(--font-size-lg);
}

.standalone-content ul,
.standalone-content ol {
  margin-bottom: var(--spacing-lg);
  padding-left: var(--spacing-xl);
}

.standalone-content ul {
  list-style: disc;
}

.standalone-content ol {
  list-style: decimal;
}

.standalone-content li {
  margin-bottom: var(--spacing-sm);
}

/* ============================================
 All Articles Page
 ============================================ */
.all-articles-page {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-2xl) 0;
}

.all-articles-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.all-articles-item {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.all-articles-date {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  min-width: 100px;
  flex-shrink: 0;
}

.all-articles-link {
  font-size: var(--font-size-md);
  color: var(--color-primary);
  line-height: var(--line-height-tight);
}

.all-articles-link:hover {
  color: var(--color-accent);
}

/* ============================================
 Footer
 ============================================ */
.site-footer {
  background-color: var(--color-primary);
  padding: var(--spacing-xl) 0;
}

.footer-nav {
  margin-bottom: var(--spacing-md);
}

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

.footer-nav-link {
  font-size: var(--font-size-sm);
  color: var(--color-secondary);
  transition: color var(--transition-fast);
}

.footer-nav-link:hover {
  color: var(--color-accent);
}

.copyright {
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* ============================================
 Responsive Design - Mobile First
 ============================================ */

/* Tablet (max-width: 991px) */
@media (max-width: 991px) {
  :root {
    --font-size-3xl: 2rem;
    --font-size-2xl: 1.75rem;
  }

  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: auto;
  }

  .featured-large {
    grid-column: span 2;
    grid-row: span 1;
  }

  .page-content {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--spacing-xl);
  }


  .sidebar {
    position: static;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
  }

  .sidebar-section {
    margin-bottom: 0;
  }

  .author-section {
    grid-column: 1 / -1;
  }

  .list-item {
    grid-template-columns: 200px 1fr;
  }
}

/* Mobile (max-width: 767px) */
@media (max-width: 767px) {
  :root {
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.5rem;
    --font-size-xl: 1.25rem;
  }

  .site-main {
    padding: var(--spacing-xl) 0;
  }

  .container {
    padding: 0 var(--spacing-md);
  }

  /* Mobile Navigation */
  .menu-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
  }

  .main-nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    width: 100%;
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    display: block;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border-light);
  }

  .nav-link::after {
    display: none;
  }

  /* Featured Section */
  .featured-section,
  .categories-section,
  .latest-section {
    padding: var(--spacing-2xl) 0;
  }

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

  .featured-large {
    grid-column: span 1;
  }

  .featured-card {
    min-height: 200px;
  }

  /* Article Grid */
  .article-grid {
    grid-template-columns: 1fr;
  }

  /* Category Grid */
  .category-grid {
    grid-template-columns: 1fr;
  }

  /* List Items */
  .list-item {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .list-image-link {
    padding-top: 56.25%;
  }

  /* Article Detail */
  .article-headline {
    font-size: var(--font-size-xl);
  }

  .article-meta-bar {
    align-items: flex-start;
  }

  .article-navigation {
    grid-template-columns: 1fr;
  }

  .nav-next {
    text-align: left;
  }

  /* Related Grid */
  .related-grid {
    grid-template-columns: 1fr;
  }

  /* Form */
  .form-row {
    grid-template-columns: 1fr;
  }

  /* Sidebar */
  .sidebar {
    grid-template-columns: 1fr;
  }

  /* Pagination */
  .pagination {
    gap: var(--spacing-xs);
  }

  .page-item {
    min-width: 36px;
    height: 36px;
    font-size: var(--font-size-xs);
  }

  /* All Articles */
  .all-articles-item {
    flex-direction: column;
    gap: var(--spacing-xs);
  }

  .all-articles-date {
    min-width: auto;
  }

  /* Author Page */
  .author-profile {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

/* Small Mobile (max-width: 479px) */
@media (max-width: 479px) {
  .featured-large .featured-title {
    font-size: var(--font-size-lg);
  }

  .featured-title {
    font-size: var(--font-size-sm);
  }

  .section-title {
    font-size: var(--font-size-lg);
  }

  .page-title {
    font-size: var(--font-size-xl);
  }
}

/* ============================================
 Print Styles
 ============================================ */
@media print {

  .site-header,
  .site-footer,
  .sidebar-wrapper,
  .menu-toggle,
  .pagination-nav,
  .comments-section,
  .article-navigation,
  .related-articles {
    display: none !important;
  }

  .site-main {
    min-height: auto;
  }

  .article-detail {
    max-width: 100%;
  }

  .article-body {
    font-size: 12pt;
    line-height: 1.5;
  }

  a {
    text-decoration: none;
    color: #000;
  }

  .article-body a::after {
    content: " (" attr(href) ")";
    font-size: 10pt;
    color: #666;
  }
}