/* ============================================================
   InfoZuela — X/Twitter-Style News Blog CSS
   Mobile-first, dark mode, production-ready
   ============================================================ */

/* ----- CSS Custom Properties (Theming) ----- */
:root {
  /* Colors — Light Theme */
  --color-bg-primary: #FFFFFF;
  --color-bg-secondary: #F7F9F9;
  --color-bg-tertiary: #EFF3F4;
  --color-bg-hover: rgba(15, 20, 28, 0.03);
  --color-bg-active: rgba(15, 20, 28, 0.06);
  --color-text-primary: #0F1419;
  --color-text-secondary: #536471;
  --color-text-tertiary: #8B98A5;
  --color-border: #EFF3F4;
  --color-border-strong: #CFD9DE;

  /* Brand Colors */
  --color-primary: #1D9BF0;
  --color-primary-hover: #1A8CD8;
  --color-primary-light: rgba(29, 155, 240, 0.1);
  --color-like: #F91880;
  --color-like-light: rgba(249, 24, 128, 0.1);
  --color-retweet: #00BA7C;
  --color-retweet-light: rgba(0, 186, 124, 0.1);
  --color-gold: #FFD400;
  --color-gold-light: rgba(255, 212, 0, 0.1);
  --color-danger: #F4212E;
  --color-danger-light: rgba(244, 33, 46, 0.1);
  --color-success: #00BA7C;
  --color-warning: #FFD400;

  /* Surface */
  --color-surface: #FFFFFF;
  --color-surface-hover: #F7F9F9;
  --color-overlay: rgba(91, 112, 131, 0.4);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 8px 32px rgba(0, 0, 0, 0.16);

  /* Layout */
  --header-height: 53px;
  --sidebar-width: 72px;
  --sidebar-expanded: 275px;
  --right-sidebar-width: 350px;
  --content-max-width: 600px;
  --bottom-nav-height: 56px;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --font-size-xs: 13px;
  --font-size-sm: 14px;
  --font-size-base: 15px;
  --font-size-lg: 17px;
  --font-size-xl: 20px;
  --font-size-2xl: 23px;
  --font-size-3xl: 25px;
  --line-height-tight: 1.2;
  --line-height-normal: 1.4;
  --line-height-relaxed: 1.6;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease;

  /* Z-index layers */
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-header: 300;
  --z-overlay: 400;
  --z-drawer: 500;
  --z-modal: 600;
  --z-toast: 700;
  --z-tooltip: 800;
}

/* ----- Dark Theme ----- */
.dark {
  --color-bg-primary: #000000;
  --color-bg-secondary: #16181C;
  --color-bg-tertiary: #1D1F23;
  --color-bg-hover: rgba(231, 233, 234, 0.03);
  --color-bg-active: rgba(231, 233, 234, 0.06);
  --color-text-primary: #E7E9EA;
  --color-text-secondary: #71767B;
  --color-text-tertiary: #536471;
  --color-border: #2F3336;
  --color-border-strong: #3E4145;
  --color-primary-light: rgba(29, 155, 240, 0.15);
  --color-like-light: rgba(249, 24, 128, 0.15);
  --color-retweet-light: rgba(0, 186, 124, 0.15);
  --color-gold-light: rgba(255, 212, 0, 0.15);
  --color-danger-light: rgba(244, 33, 46, 0.15);
  --color-surface: #16181C;
  --color-surface-hover: #1D1F23;
  --color-overlay: rgba(91, 112, 131, 0.6);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 8px 32px rgba(0, 0, 0, 0.6);
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  padding-bottom: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom, 0px));
  padding-top: var(--header-height);
}

@media (min-width: 1024px) {
  body {
    padding-bottom: 0;
  }
}

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

a:hover {
  text-decoration: underline;
}

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

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
  -webkit-appearance: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: transparent;
  border: none;
  outline: none;
}

ul, ol { list-style: none; }

/* ----- Skip to Content (Accessibility) ----- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #FFFFFF;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  z-index: var(--z-toast);
  font-weight: var(--font-weight-bold);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 8px;
  text-decoration: none;
}

/* ----- Layout: App Shell ----- */
.app-layout {
  display: flex;
  min-height: 100vh;
  max-width: 1280px;
  margin: 0 auto;
}

.layout-sidebar-left {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: var(--sidebar-expanded);
  height: calc(100vh - var(--header-height));
  border-right: 1px solid var(--color-border);
  background: var(--color-bg-primary);
  z-index: var(--z-sticky);
  overflow-y: auto;
  padding: 8px 12px;
}

@media (min-width: 1024px) {
  .layout-sidebar-left {
    display: flex;
    flex-direction: column;
  }
}

.layout-main {
  flex: 1;
  min-width: 0;
  max-width: var(--content-max-width);
  margin: 0 auto;
  border-right: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
  min-height: calc(100vh - var(--header-height));
}

@media (min-width: 1024px) {
  .layout-main {
    margin: 0;
  }
}

.layout-sidebar-right {
  display: none;
  width: var(--right-sidebar-width);
  padding: 0 24px;
  position: sticky;
  top: var(--header-height);
  height: fit-content;
  max-height: calc(100vh - var(--header-height));
  overflow-y: auto;
}

@media (min-width: 1024px) {
  .layout-sidebar-right {
    display: block;
  }
}

/* ----- Sticky Header ----- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-header);
  display: flex;
  align-items: center;
  padding: 0 16px;
  transition: background var(--transition-normal);
}

.dark .site-header {
  background: rgba(0, 0, 0, 0.85);
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-decoration: none;
  flex-shrink: 0;
}

.header-logo:hover {
  text-decoration: none;
}

.header-logo svg {
  width: 28px;
  height: 28px;
  fill: var(--color-primary);
}

.header-search {
  flex: 1;
  max-width: 530px;
  margin: 0 16px;
  position: relative;
}

.header-search-input {
  width: 100%;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  padding: 10px 40px 10px 40px;
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.header-search-input::placeholder {
  color: var(--color-text-secondary);
}

.header-search-input:focus {
  background: var(--color-bg-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.header-search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-secondary);
  pointer-events: none;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

/* ----- Icon Buttons ----- */
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 39px;
  height: 39px;
  border-radius: var(--radius-full);
  transition: background var(--transition-fast), color var(--transition-fast);
  color: var(--color-text-primary);
  min-width: 39px;
  min-height: 39px;
}

.icon-btn:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.icon-btn svg {
  width: 20px;
  height: 20px;
}

.icon-btn--like:hover,
.icon-btn--like.active {
  background: var(--color-like-light);
  color: var(--color-like);
}

.icon-btn--retweet:hover,
.icon-btn--retweet.active {
  background: var(--color-retweet-light);
  color: var(--color-retweet);
}

.icon-btn--bookmark:hover,
.icon-btn--bookmark.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* ----- Primary Button ----- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--color-primary);
  color: #FFFFFF;
  border-radius: var(--radius-full);
  padding: 0 20px;
  height: 39px;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-sm);
  transition: background var(--transition-fast), opacity var(--transition-fast);
  min-width: 44px;
  min-height: 44px;
}

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

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-full);
  padding: 0 20px;
  height: 39px;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-sm);
  transition: background var(--transition-fast);
  min-width: 44px;
  min-height: 44px;
}

.btn-outline:hover {
  background: var(--color-primary-light);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: var(--color-text-primary);
  border-radius: var(--radius-full);
  padding: 0 20px;
  height: 39px;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-sm);
  transition: background var(--transition-fast);
  min-width: 44px;
  min-height: 44px;
}

.btn-ghost:hover {
  background: var(--color-bg-hover);
}

/* ----- Left Sidebar ----- */
.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 12px;
  border-radius: var(--radius-full);
  color: var(--color-text-primary);
  font-size: var(--font-size-xl);
  transition: background var(--transition-fast);
  text-decoration: none;
  min-height: 50px;
}

.sidebar-nav-item:hover {
  background: var(--color-bg-hover);
  text-decoration: none;
}

.sidebar-nav-item.active {
  font-weight: var(--font-weight-bold);
}

.sidebar-nav-item svg {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
}

.sidebar-nav-item span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-post-btn {
  margin-top: 16px;
  width: 100%;
  height: 50px;
  font-size: var(--font-size-lg);
}

.sidebar-profile {
  margin-top: auto;
  padding: 12px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 12px;
  transition: background var(--transition-fast);
  cursor: pointer;
}

.sidebar-profile:hover {
  background: var(--color-bg-hover);
}

/* ----- Right Sidebar ----- */
.right-sidebar-section {
  margin-bottom: 16px;
}

.right-sidebar-card {
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.right-sidebar-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  padding: 12px 16px;
  color: var(--color-text-primary);
}

.trend-item {
  padding: 12px 16px;
  transition: background var(--transition-fast);
  cursor: pointer;
}

.trend-item:hover {
  background: var(--color-bg-hover);
}

.trend-category {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.trend-name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 2px 0;
}

.trend-count {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* ----- Breaking News Banner ----- */
.breaking-banner {
  background: var(--color-danger);
  color: #FFFFFF;
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-sm);
  animation: pulse-banner 2s ease-in-out infinite;
  position: sticky;
  top: var(--header-height);
  z-index: var(--z-sticky);
}

.breaking-banner a {
  color: #FFFFFF;
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.breaking-banner a:hover {
  text-decoration: none;
  opacity: 0.9;
}

.breaking-dot {
  width: 8px;
  height: 8px;
  background: #FFFFFF;
  border-radius: var(--radius-full);
  animation: pulse-dot 1.5s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes pulse-banner {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.9; }
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.7; }
}

/* ----- Category Tabs ----- */
.category-tabs {
  display: flex;
  overflow-x: auto;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-primary);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.category-tabs::-webkit-scrollbar {
  display: none;
}

.category-tab {
  flex-shrink: 0;
  padding: 16px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  position: relative;
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
  min-height: 52px;
  display: flex;
  align-items: center;
  min-width: 44px;
}

.category-tab:hover {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
  text-decoration: none;
}

.category-tab.active {
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
}

.category-tab.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 16px;
  right: 16px;
  height: 4px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

/* ----- Category Pill / Badge ----- */
.category-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  background: var(--color-primary-light);
  color: var(--color-primary);
  white-space: nowrap;
}

.category-pill--like {
  background: var(--color-like-light);
  color: var(--color-like);
}

.category-pill--retweet {
  background: var(--color-retweet-light);
  color: var(--color-retweet);
}

.category-pill--gold {
  background: var(--color-gold-light);
  color: var(--color-gold);
}

/* ----- News Card (Tweet-style) ----- */
.news-card {
  display: block;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-fast);
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.news-card:hover {
  background: var(--color-bg-hover);
  text-decoration: none;
  color: inherit;
}

.news-card--featured {
  padding: 16px;
}

.news-card-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.news-card-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
  border: 1px solid var(--color-border);
  background: var(--color-bg-tertiary);
}

.news-card--featured .news-card-avatar {
  width: 48px;
  height: 48px;
  font-size: 24px;
}

.news-card-meta {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-sm);
  flex-wrap: wrap;
}

.news-card-category {
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.news-card-separator {
  color: var(--color-text-secondary);
}

.news-card-time {
  color: var(--color-text-secondary);
}

.news-card-body {
  margin-left: 52px;
}

.news-card--featured .news-card-body {
  margin-left: 60px;
}

.news-card-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card--featured .news-card-title {
  font-size: var(--font-size-xl);
  -webkit-line-clamp: 3;
}

.news-card-excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}

.news-card-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin: 12px 0;
  background: var(--color-bg-tertiary);
  aspect-ratio: 16 / 9;
  position: relative;
}

.news-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity var(--transition-normal);
}

.news-card-image img[loading] {
  opacity: 0;
}

.news-card-image img.loaded {
  opacity: 1;
}

/* Viral Score Badge */
.viral-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  color: var(--color-gold);
  background: var(--color-gold-light);
  padding: 1px 6px;
  border-radius: var(--radius-full);
}

.viral-badge svg {
  width: 12px;
  height: 12px;
}

/* Action Bar */
.action-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
  max-width: 425px;
}

.action-bar-item {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  transition: color var(--transition-fast);
  min-width: 44px;
  min-height: 44px;
  padding: 8px;
  border-radius: var(--radius-full);
  cursor: pointer;
  position: relative;
}

.action-bar-item:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.action-bar-item--like:hover,
.action-bar-item--like.active {
  background: var(--color-like-light);
  color: var(--color-like);
}

.action-bar-item--retweet:hover,
.action-bar-item--retweet.active {
  background: var(--color-retweet-light);
  color: var(--color-retweet);
}

.action-bar-item--bookmark:hover,
.action-bar-item--bookmark.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.action-bar-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.action-bar-item.active svg {
  animation: pop var(--transition-fast);
}

@keyframes pop {
  0% { transform: scale(1); }
  50% { transform: scale(1.3); }
  100% { transform: scale(1); }
}

/* ----- Sort Controls ----- */
.sort-controls {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--color-border);
  padding: 0 16px;
}

.sort-btn {
  padding: 12px 16px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
  white-space: nowrap;
  min-height: 44px;
}

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

.sort-btn.active {
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
  border-bottom-color: var(--color-primary);
}

/* ----- Feed Title ----- */
.feed-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  padding: 8px 16px 0;
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: var(--z-sticky);
}

.dark .feed-title {
  background: rgba(0, 0, 0, 0.85);
}

/* ----- Article Page ----- */
.article-page {
  padding: 0;
}

.article-back {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  min-height: 44px;
  border-bottom: 1px solid var(--color-border);
}

.article-back:hover {
  background: var(--color-bg-hover);
  text-decoration: none;
}

.article-header {
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-category-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
}

.article-category-info {
  flex: 1;
}

.article-category-name {
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-base);
}

.article-category-meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.article-follow-btn {
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-full);
  padding: 6px 16px;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-sm);
  min-height: 36px;
}

.article-follow-btn:hover {
  background: var(--color-bg-hover);
}

.article-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-extrabold);
  line-height: var(--line-height-tight);
  padding: 0 16px;
  margin-bottom: 12px;
  color: var(--color-text-primary);
}

.article-image {
  margin: 0 0 12px;
  border-radius: 0;
  overflow: hidden;
  background: var(--color-bg-tertiary);
}

.article-image img {
  width: 100%;
  object-fit: cover;
}

.article-date-views {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 16px 12px;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
}

.article-date-views span {
  color: var(--color-text-secondary);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
}

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

.article-content {
  padding: 16px;
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
}

.article-content p {
  margin-bottom: 16px;
}

.article-content h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin: 24px 0 12px;
}

.article-content h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin: 20px 0 8px;
}

.article-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding: 12px 16px;
  margin: 16px 0;
  background: var(--color-primary-light);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.article-content ul,
.article-content ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.article-content li {
  margin-bottom: 8px;
  list-style: disc;
}

.article-content ol li {
  list-style: decimal;
}

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

.article-content img {
  border-radius: var(--radius-xl);
  margin: 16px 0;
}

.article-content strong {
  font-weight: var(--font-weight-bold);
}

/* Article Stats Row */
.article-stats {
  display: flex;
  gap: 16px;
  padding: 12px 16px;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
}

.article-stats strong {
  color: var(--color-text-primary);
}

/* Article Action Bar (full width) */
.article-action-bar {
  display: flex;
  justify-content: space-around;
  padding: 4px 16px;
  border-bottom: 1px solid var(--color-border);
}

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

.comment-form {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  gap: 12px;
}

.comment-form-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 18px;
}

.comment-form-body {
  flex: 1;
}

.comment-name-input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  font-size: var(--font-size-sm);
  background: var(--color-bg-primary);
  transition: border-color var(--transition-fast);
}

.comment-name-input:focus {
  border-color: var(--color-primary);
}

.comment-textarea {
  width: 100%;
  min-height: 60px;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  resize: vertical;
  font-size: var(--font-size-sm);
  background: var(--color-bg-primary);
  transition: border-color var(--transition-fast);
}

.comment-textarea:focus {
  border-color: var(--color-primary);
}

.comment-form-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 8px;
}

.comment-item {
  display: flex;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
}

.comment-item-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
  border: 1px solid var(--color-border);
}

.comment-item-body {
  flex: 1;
}

.comment-item-header {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 4px;
}

.comment-item-name {
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-sm);
}

.comment-item-time {
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
}

.comment-item-text {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
}

.comment-item-actions {
  display: flex;
  gap: 16px;
  margin-top: 8px;
}

.comment-action-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  padding: 4px 0;
  min-height: 34px;
  transition: color var(--transition-fast);
}

.comment-action-btn:hover {
  color: var(--color-primary);
}

.comment-action-btn--like:hover,
.comment-action-btn--like.active {
  color: var(--color-like);
}

/* ----- Newsletter Card ----- */
.newsletter-card {
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-xl);
  padding: 16px;
  margin: 16px;
}

.newsletter-card h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-extrabold);
  margin-bottom: 4px;
}

.newsletter-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.newsletter-form {
  display: flex;
  gap: 8px;
}

.newsletter-input {
  flex: 1;
  padding: 10px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-bg-primary);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-fast);
}

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

.newsletter-success {
  color: var(--color-retweet);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

/* ----- Related Articles ----- */
.related-section {
  border-top: 1px solid var(--color-border);
  padding: 16px;
}

.related-section h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  margin-bottom: 12px;
}

.related-card {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: inherit;
}

.related-card:hover {
  text-decoration: none;
}

.related-card-image {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-md);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--color-bg-tertiary);
}

.related-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.related-card-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card-meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-top: 4px;
}

/* ----- Category Page ----- */
.category-header {
  padding: 16px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
}

.category-header-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.category-header-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
}

.category-header h1 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
}

.category-header p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ----- Search Results ----- */
.search-header {
  padding: 16px;
  border-bottom: 1px solid var(--color-border);
}

.search-header h1 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
}

.search-header .search-query {
  color: var(--color-primary);
}

.search-header .search-count {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ----- 404 Page ----- */
.error-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 24px;
  text-align: center;
  min-height: 60vh;
}

.error-page-icon {
  width: 120px;
  height: 120px;
  margin-bottom: 24px;
  color: var(--color-primary);
}

.error-page h1 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-extrabold);
  margin-bottom: 8px;
}

.error-page p {
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  font-size: var(--font-size-base);
  max-width: 360px;
}

.error-page .header-search {
  max-width: 400px;
  width: 100%;
  margin: 0 auto 24px;
}

/* ----- Skeleton Loading ----- */
.skeleton {
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-sm);
  position: relative;
  overflow: hidden;
}

.skeleton::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.08) 50%,
    transparent 100%
  );
  animation: shimmer 1.5s ease-in-out infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.skeleton-card {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
}

.skeleton-card-header {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
}

.skeleton-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
}

.skeleton-line {
  height: 14px;
  margin-bottom: 8px;
  border-radius: var(--radius-sm);
}

.skeleton-line--short {
  width: 40%;
}

.skeleton-line--medium {
  width: 70%;
}

.skeleton-line--long {
  width: 100%;
}

.skeleton-image {
  height: 180px;
  border-radius: var(--radius-xl);
  margin-top: 12px;
}

/* ----- Empty State ----- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 24px;
  text-align: center;
}

.empty-state-icon {
  width: 80px;
  height: 80px;
  color: var(--color-text-tertiary);
  margin-bottom: 16px;
}

.empty-state h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  margin-bottom: 8px;
}

.empty-state p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  max-width: 300px;
}

/* ----- Mobile Bottom Navigation ----- */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom, 0px));
  background: var(--color-bg-primary);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding-bottom: env(safe-area-inset-bottom, 0px);
  z-index: var(--z-header);
}

@media (min-width: 1024px) {
  .bottom-nav {
    display: none;
  }
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 8px 12px;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 10px;
  min-width: 44px;
  min-height: 44px;
  transition: color var(--transition-fast);
  position: relative;
}

.bottom-nav-item:hover,
.bottom-nav-item.active {
  color: var(--color-primary);
  text-decoration: none;
}

.bottom-nav-item svg {
  width: 24px;
  height: 24px;
}

.bottom-nav-badge {
  position: absolute;
  top: 4px;
  right: 8px;
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

/* ----- Mobile Menu Drawer ----- */
.mobile-drawer-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  z-index: var(--z-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.mobile-drawer-overlay.open {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 280px;
  max-width: 80vw;
  background: var(--color-bg-primary);
  z-index: var(--z-drawer);
  transform: translateX(-100%);
  transition: transform var(--transition-slow);
  overflow-y: auto;
  padding: 16px;
}

.mobile-drawer.open {
  transform: translateX(0);
}

/* ----- Comment Drawer (Mobile) ----- */
.comment-drawer-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  z-index: var(--z-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.comment-drawer-overlay.open {
  opacity: 1;
  visibility: visible;
}

.comment-drawer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  max-height: 80vh;
  background: var(--color-bg-primary);
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
  z-index: var(--z-drawer);
  transform: translateY(100%);
  transition: transform var(--transition-slow);
  overflow-y: auto;
  padding: 16px;
  padding-bottom: calc(16px + env(safe-area-inset-bottom, 0px));
}

.comment-drawer.open {
  transform: translateY(0);
}

.comment-drawer-handle {
  width: 36px;
  height: 4px;
  background: var(--color-border-strong);
  border-radius: var(--radius-full);
  margin: 0 auto 16px;
}

/* ----- Share Menu ----- */
.share-menu {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-bg-primary);
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
  z-index: var(--z-drawer);
  transform: translateY(100%);
  transition: transform var(--transition-slow);
  padding: 16px;
  padding-bottom: calc(16px + env(safe-area-inset-bottom, 0px));
}

.share-menu.open {
  transform: translateY(0);
}

.share-menu-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  z-index: var(--z-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.share-menu-overlay.open {
  opacity: 1;
  visibility: visible;
}

.share-menu-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  text-align: center;
  margin-bottom: 16px;
}

.share-menu-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.share-menu-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 12px 8px;
  border-radius: var(--radius-lg);
  transition: background var(--transition-fast);
  color: var(--color-text-primary);
  text-decoration: none;
  font-size: var(--font-size-xs);
  min-height: 44px;
}

.share-menu-item:hover {
  background: var(--color-bg-hover);
  text-decoration: none;
}

.share-menu-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}

.share-menu-icon--twitter {
  background: #1DA1F2;
  color: #FFFFFF;
}

.share-menu-icon--facebook {
  background: #1877F2;
  color: #FFFFFF;
}

.share-menu-icon--whatsapp {
  background: #25D366;
  color: #FFFFFF;
}

.share-menu-icon--copy {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.share-menu-icon svg {
  width: 24px;
  height: 24px;
}

.share-menu-handle {
  width: 36px;
  height: 4px;
  background: var(--color-border-strong);
  border-radius: var(--radius-full);
  margin: 0 auto 16px;
}

/* ----- Toast / Notification ----- */
.toast-container {
  position: fixed;
  bottom: calc(var(--bottom-nav-height) + 16px + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

@media (min-width: 1024px) {
  .toast-container {
    bottom: 24px;
    left: auto;
    right: 24px;
    transform: none;
  }
}

.toast {
  background: var(--color-primary);
  color: #FFFFFF;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  box-shadow: var(--shadow-lg);
  animation: toast-in var(--transition-slow);
  pointer-events: auto;
  max-width: 360px;
}

.toast.toast-out {
  animation: toast-out var(--transition-normal) forwards;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes toast-out {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(20px); }
}

/* ----- Reading Progress Bar ----- */
.reading-progress {
  position: fixed;
  top: var(--header-height);
  left: 0;
  height: 3px;
  background: var(--color-primary);
  z-index: var(--z-sticky);
  transition: width 0.1s linear;
  width: 0;
}

/* ----- New Articles Badge ----- */
.new-articles-badge {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  display: flex;
  justify-content: center;
  padding: 8px 0;
  opacity: 0;
  transform: translateY(-100%);
  transition: all var(--transition-normal);
}

.new-articles-badge.visible {
  opacity: 1;
  transform: translateY(0);
}

.new-articles-badge button {
  background: var(--color-primary);
  color: #FFFFFF;
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  box-shadow: var(--shadow-md);
  min-height: 44px;
}

.new-articles-badge button:hover {
  background: var(--color-primary-hover);
}

/* ----- Back to Top ----- */
.back-to-top {
  position: fixed;
  bottom: calc(var(--bottom-nav-height) + 72px + env(safe-area-inset-bottom, 0px));
  right: 16px;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  z-index: var(--z-sticky);
  opacity: 0;
  visibility: hidden;
  transform: scale(0.8);
  transition: all var(--transition-normal);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

.back-to-top:hover {
  background: var(--color-primary-hover);
}

@media (min-width: 1024px) {
  .back-to-top {
    bottom: 24px;
  }
}

.back-to-top svg {
  width: 24px;
  height: 24px;
}

/* ----- PWA Install Prompt ----- */
.pwa-install-banner {
  position: fixed;
  bottom: calc(var(--bottom-nav-height) + 16px + env(safe-area-inset-bottom, 0px));
  left: 16px;
  right: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 16px;
  z-index: var(--z-modal);
  box-shadow: var(--shadow-xl);
  display: none;
}

.pwa-install-banner.visible {
  display: block;
}

.pwa-install-banner h3 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  margin-bottom: 4px;
}

.pwa-install-banner p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.pwa-install-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

/* ----- Push Notification Prompt ----- */
.push-prompt {
  position: fixed;
  bottom: calc(var(--bottom-nav-height) + 16px + env(safe-area-inset-bottom, 0px));
  left: 16px;
  right: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 16px;
  z-index: var(--z-modal);
  box-shadow: var(--shadow-xl);
  display: none;
}

.push-prompt.visible {
  display: block;
}

.push-prompt h3 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  margin-bottom: 4px;
}

.push-prompt p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.push-prompt-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

/* ----- Newsletter Popup ----- */
.newsletter-popup-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.newsletter-popup-overlay.open {
  opacity: 1;
  visibility: visible;
}

.newsletter-popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  background: var(--color-bg-primary);
  border-radius: var(--radius-2xl);
  padding: 32px 24px;
  z-index: var(--z-modal);
  width: 90%;
  max-width: 440px;
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-slow);
}

.newsletter-popup.open {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}

.newsletter-popup h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  margin-bottom: 8px;
  text-align: center;
}

.newsletter-popup p {
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: 20px;
  font-size: var(--font-size-sm);
}

.newsletter-popup .newsletter-form {
  flex-direction: column;
}

.newsletter-popup .newsletter-input {
  border-radius: var(--radius-md);
  padding: 12px 16px;
}

.newsletter-popup .btn-primary {
  width: 100%;
  height: 44px;
  border-radius: var(--radius-md);
}

.newsletter-popup-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  transition: background var(--transition-fast);
}

.newsletter-popup-close:hover {
  background: var(--color-bg-hover);
}

/* ----- Dark Mode Toggle ----- */
.dark-toggle {
  position: relative;
  width: 44px;
  height: 24px;
  background: var(--color-border-strong);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-normal);
}

.dark-toggle.active {
  background: var(--color-primary);
}

.dark-toggle-knob {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  background: #FFFFFF;
  transition: transform var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.dark-toggle.active .dark-toggle-knob {
  transform: translateX(20px);
}

/* ----- Avatar with Ring ----- */
.avatar-ring {
  border-radius: var(--radius-full);
  padding: 2px;
  background: var(--color-primary);
  display: inline-flex;
}

.avatar-ring img,
.avatar-ring .avatar-placeholder {
  border-radius: var(--radius-full);
  border: 2px solid var(--color-bg-primary);
}

.avatar-placeholder {
  width: 40px;
  height: 40px;
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

/* ----- Text Selection Share ----- */
.text-selection-share {
  position: absolute;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 4px;
  box-shadow: var(--shadow-lg);
  display: none;
  z-index: var(--z-tooltip);
}

.text-selection-share.visible {
  display: flex;
}

.text-selection-share button {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  transition: background var(--transition-fast);
}

.text-selection-share button:hover {
  background: var(--color-primary-light);
}

/* ----- Footer ----- */
.site-footer {
  padding: 24px 16px;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  text-align: center;
}

.site-footer a {
  color: var(--color-text-secondary);
  margin: 0 8px;
}

.site-footer a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

/* ----- Custom Scrollbar ----- */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--color-border-strong);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-secondary);
}

* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-strong) transparent;
}

/* ----- Utility Classes ----- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.line-clamp-1 {
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.hidden { display: none !important; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }
.text-center { text-align: center; }
.font-bold { font-weight: var(--font-weight-bold); }
.text-sm { font-size: var(--font-size-sm); }
.text-xs { font-size: var(--font-size-xs); }
.text-secondary { color: var(--color-text-secondary); }
.text-primary { color: var(--color-primary); }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.p-4 { padding: 16px; }
.w-full { width: 100%; }

/* ----- Responsive Helpers ----- */
@media (max-width: 639px) {
  .sm\:hidden { display: none !important; }
}

@media (min-width: 640px) {
  .sm\:block { display: block !important; }
  .sm\:flex { display: flex !important; }
}

@media (min-width: 768px) {
  .md\:block { display: block !important; }
}

@media (min-width: 1024px) {
  .lg\:block { display: block !important; }
  .lg\:hidden { display: none !important; }
}

@media (min-width: 1280px) {
  .xl\:block { display: block !important; }
}

/* ----- Pull to Refresh ----- */
.pull-refresh {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 0;
  overflow: hidden;
  transition: height var(--transition-normal);
  color: var(--color-primary);
}

.pull-refresh.pulling {
  height: 60px;
}

.pull-refresh.refreshing {
  height: 60px;
}

.pull-refresh-spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ----- Print Styles ----- */
@media print {
  body {
    background: #FFFFFF !important;
    color: #000000 !important;
    padding: 0 !important;
  }

  .site-header,
  .layout-sidebar-left,
  .layout-sidebar-right,
  .bottom-nav,
  .action-bar,
  .article-action-bar,
  .comments-section,
  .related-section,
  .newsletter-card,
  .newsletter-popup,
  .back-to-top,
  .toast-container,
  .pwa-install-banner,
  .push-prompt,
  .reading-progress,
  .breaking-banner,
  .new-articles-badge {
    display: none !important;
  }

  .app-layout {
    display: block !important;
  }

  .layout-main {
    max-width: 100% !important;
    border: none !important;
    margin: 0 auto !important;
  }

  .article-content {
    font-size: 12pt;
    line-height: 1.6;
  }

  .article-title {
    font-size: 18pt;
  }

  a {
    color: #000000 !important;
    text-decoration: underline;
  }

  img {
    max-width: 100% !important;
    page-break-inside: avoid;
  }

  .news-card {
    page-break-inside: avoid;
    border-bottom: 1px solid #CCCCCC;
  }
}

/* ----- Focus Visible ----- */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

button:focus:not(:focus-visible),
a:focus:not(:focus-visible) {
  outline: none;
}

/* ----- Selection ----- */
::selection {
  background: rgba(29, 155, 240, 0.3);
  color: var(--color-text-primary);
}

/* ----- Transition Utilities ----- */
.fade-in {
  animation: fadeIn var(--transition-normal);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.slide-up {
  animation: slideUp var(--transition-slow);
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}