/*
Theme Name: DictionarMedical Pro
Theme URI: https://dictionarmedical.ro
Author: DictionarMedical Team
Author URI: https://dictionarmedical.ro
Description: Temă profesională pentru dicționar medical - design modern, curat și optimizat pentru conținut medical în limba română. SEO-ready, mobile-first, WCAG 2.1 AA accesibil.
Version: 2.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 8.0
License: Proprietary
License URI: https://dictionarmedical.ro
Text Domain: dictionarmedical
Tags: medical, dictionary, health, one-column, two-columns, right-sidebar, custom-colors, custom-logo, custom-menu, featured-images, full-width-template, rtl-language-support, sticky-post, threaded-comments, translation-ready, blog, news
*/

/* =========================================================
   DESIGN TOKENS & CSS CUSTOM PROPERTIES
   ========================================================= */
:root {
  /* Brand Colors */
  --color-primary:        #0056b3;
  --color-primary-dark:   #003d80;
  --color-primary-light:  #e8f0fb;
  --color-secondary:      #00a896;
  --color-secondary-dark: #007a6e;
  --color-accent:         #e63946;

  /* Neutral Palette */
  --color-white:          #ffffff;
  --color-gray-50:        #f8fafc;
  --color-gray-100:       #f1f5f9;
  --color-gray-200:       #e2e8f0;
  --color-gray-300:       #cbd5e1;
  --color-gray-400:       #94a3b8;
  --color-gray-500:       #64748b;
  --color-gray-600:       #475569;
  --color-gray-700:       #334155;
  --color-gray-800:       #1e293b;
  --color-gray-900:       #0f172a;

  /* Semantic Colors */
  --color-text:           #1e293b;
  --color-text-muted:     #64748b;
  --color-text-light:     #94a3b8;
  --color-border:         #e2e8f0;
  --color-bg:             #f8fafc;
  --color-surface:        #ffffff;
  --color-surface-alt:    #f1f5f9;

  /* Medical Category Colors */
  --color-cat-boli:         #e63946;
  --color-cat-stomatologie: #457b9d;
  --color-cat-analize:      #2d6a4f;
  --color-cat-alergii:      #e9c46a;
  --color-cat-vitamine:     #f4a261;
  --color-cat-minerale:     #a8dadc;

  /* Typography */
  --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-serif: 'Georgia', 'Times New Roman', serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;

  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  --leading-tight:  1.25;
  --leading-snug:   1.375;
  --leading-normal: 1.5;
  --leading-relaxed:1.625;
  --leading-loose:  2;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --container-max:    1280px;
  --container-tight:  800px;
  --sidebar-width:    340px;
  --content-width:    860px;
  --border-radius-sm: 4px;
  --border-radius:    8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
  --border-radius-2xl:24px;

  /* Shadows */
  --shadow-sm:  0 1px 2px 0 rgba(0,0,0,.05);
  --shadow:     0 1px 3px 0 rgba(0,0,0,.10), 0 1px 2px -1px rgba(0,0,0,.10);
  --shadow-md:  0 4px 6px -1px rgba(0,0,0,.10), 0 2px 4px -2px rgba(0,0,0,.10);
  --shadow-lg:  0 10px 15px -3px rgba(0,0,0,.10), 0 4px 6px -4px rgba(0,0,0,.10);
  --shadow-xl:  0 20px 25px -5px rgba(0,0,0,.10), 0 8px 10px -6px rgba(0,0,0,.10);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition:        250ms ease;
  --transition-slow:   400ms ease;

  /* Header */
  --header-height: 72px;
}

/* =========================================================
   RESET & BASE
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

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

img, svg, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; border: none; background: none; }

/* =========================================================
   LAYOUT CONTAINERS
   ========================================================= */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.site-wrapper { min-height: 100vh; display: flex; flex-direction: column; }
.site-content { flex: 1; }

.content-area {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: var(--space-8);
  align-items: start;
  padding-block: var(--space-10);
}

.content-area.full-width { grid-template-columns: 1fr; }

@media (max-width: 1024px) {
  .content-area { grid-template-columns: 1fr; }
  :root { --sidebar-width: 100%; }
}

/* =========================================================
   SKIP LINK (ACCESSIBILITY)
   ========================================================= */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: var(--space-3) var(--space-6);
  z-index: 9999;
  font-weight: var(--weight-semibold);
  border-radius: 0 0 var(--border-radius) 0;
}
.skip-link:focus { top: 0; }

/* =========================================================
   TOP BAR
   ========================================================= */
.top-bar {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,.85);
  font-size: var(--text-xs);
  padding-block: var(--space-2);
}
.top-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.top-bar-info {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}
.top-bar-info a {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  color: rgba(255,255,255,.85);
  transition: color var(--transition-fast);
}
.top-bar-info a:hover { color: white; }
.top-bar-social { display: flex; align-items: center; gap: var(--space-3); }
.top-bar-social a {
  color: rgba(255,255,255,.7);
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
}
.top-bar-social a:hover { color: white; }

/* =========================================================
   SITE HEADER
   ========================================================= */
.site-header {
  background: var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 20px rgba(0,0,0,.15);
}
.site-header .container {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  height: var(--header-height);
}

/* Logo */
.site-branding {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}
.site-logo {
  width: 44px;
  height: 44px;
  background: white;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.site-logo img { width: 32px; height: 32px; object-fit: contain; }
.site-logo-icon {
  font-size: 24px;
  color: var(--color-primary);
  font-weight: 800;
  line-height: 1;
}
.site-name-group { display: flex; flex-direction: column; gap: 2px; }
.site-title {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: white;
  line-height: 1;
  letter-spacing: -.025em;
}
.site-title span { color: var(--color-secondary); }
.site-tagline {
  font-size: 10px;
  color: rgba(255,255,255,.65);
  text-transform: uppercase;
  letter-spacing: .1em;
  font-weight: var(--weight-medium);
}

/* Primary Nav */
.header-nav { flex: 1; }
.primary-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  justify-content: center;
}
.primary-nav > li { position: relative; }
.primary-nav > li > a {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  color: rgba(255,255,255,.9);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  border-radius: var(--border-radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}
.primary-nav > li > a:hover,
.primary-nav > li.current-menu-item > a {
  background: rgba(255,255,255,.15);
  color: white;
}
.primary-nav > li.current-menu-item > a {
  background: rgba(255,255,255,.2);
  font-weight: var(--weight-semibold);
}

/* Dropdown */
.primary-nav .sub-menu {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  min-width: 220px;
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 200;
  padding: var(--space-2);
}
.primary-nav > li:hover .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.sub-menu li a {
  display: block;
  padding: var(--space-2) var(--space-3);
  color: var(--color-text);
  font-size: var(--text-sm);
  border-radius: var(--border-radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
}
.sub-menu li a:hover { background: var(--color-primary-light); color: var(--color-primary); }

/* Header Search */
.header-search { flex-shrink: 0; }
.header-search-form {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 50px;
  overflow: hidden;
  transition: background var(--transition), border-color var(--transition);
}
.header-search-form:focus-within {
  background: white;
  border-color: white;
}
.header-search-input {
  background: none;
  border: none;
  outline: none;
  color: white;
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-4);
  width: 200px;
  transition: color var(--transition);
}
.header-search-input::placeholder { color: rgba(255,255,255,.6); }
.header-search-form:focus-within .header-search-input { color: var(--color-text); }
.header-search-btn {
  background: none;
  border: none;
  color: rgba(255,255,255,.8);
  padding: var(--space-2) var(--space-3);
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
}
.header-search-form:focus-within .header-search-btn { color: var(--color-primary); }
.header-search-btn:hover { color: white; }

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  color: white;
}
.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: currentColor;
  transition: transform var(--transition), opacity var(--transition);
  transform-origin: center;
}
.mobile-menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =========================================================
   BREADCRUMBS
   ========================================================= */
.breadcrumbs-wrap {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding-block: var(--space-3);
}
.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.breadcrumbs a {
  color: var(--color-primary);
  transition: color var(--transition-fast);
}
.breadcrumbs a:hover { color: var(--color-primary-dark); }
.breadcrumbs-sep { color: var(--color-text-light); }
.breadcrumbs span[aria-current] { color: var(--color-text); font-weight: var(--weight-medium); }

/* =========================================================
   HERO / HOME BANNER
   ========================================================= */
.home-hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, #1a6eb0 100%);
  padding-block: var(--space-20) var(--space-16);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.home-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 20% 80%, rgba(0,168,150,.2) 0%, transparent 50%),
                    radial-gradient(circle at 80% 20%, rgba(255,255,255,.05) 0%, transparent 50%);
}
.home-hero .container { position: relative; z-index: 1; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  color: rgba(255,255,255,.9);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: .1em;
  padding: var(--space-1) var(--space-3);
  border-radius: 50px;
  margin-bottom: var(--space-5);
}
.hero-badge-dot {
  width: 6px; height: 6px;
  background: var(--color-secondary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .7; transform: scale(1.3); }
}
.hero-title {
  font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
  font-weight: var(--weight-bold);
  color: white;
  line-height: var(--leading-tight);
  margin-bottom: var(--space-5);
  letter-spacing: -.025em;
}
.hero-title em { color: var(--color-secondary); font-style: normal; }
.hero-subtitle {
  font-size: var(--text-lg);
  color: rgba(255,255,255,.75);
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: var(--space-10);
  line-height: var(--leading-relaxed);
}
.hero-search {
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: var(--space-8);
}
.hero-search-form {
  display: flex;
  align-items: center;
  background: white;
  border-radius: 50px;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}
.hero-search-input {
  flex: 1;
  border: none;
  outline: none;
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-base);
  color: var(--color-text);
  background: transparent;
}
.hero-search-input::placeholder { color: var(--color-text-muted); }
.hero-search-btn {
  background: var(--color-primary);
  color: white;
  border: none;
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  transition: background var(--transition-fast);
  white-space: nowrap;
}
.hero-search-btn:hover { background: var(--color-primary-dark); }
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat-value {
  display: block;
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: white;
  line-height: 1;
}
.hero-stat-label {
  font-size: var(--text-xs);
  color: rgba(255,255,255,.65);
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-top: var(--space-1);
}
.hero-stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,.2);
}

/* =========================================================
   CATEGORY CARDS (HOME)
   ========================================================= */
.section-heading {
  text-align: center;
  margin-bottom: var(--space-10);
}
.section-label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.section-title {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-3);
}
.section-description {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 600px;
  margin-inline: auto;
}

.categories-section { padding-block: var(--space-16); background: var(--color-bg); }
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-4);
}
.category-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-6);
  text-align: center;
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}
.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.category-card-icon {
  width: 56px; height: 56px;
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  flex-shrink: 0;
}
.category-card-name {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
}
.category-card-count {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-gray-100);
  padding: 2px var(--space-2);
  border-radius: 50px;
}

/* =========================================================
   ARTICLE CARDS
   ========================================================= */
.articles-section { padding-block: var(--space-16); background: var(--color-surface); }
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-6);
}
.articles-grid.list-view { grid-template-columns: 1fr; }

.article-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
}
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}
.article-card-thumb {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-gray-100);
  position: relative;
}
.article-card-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.article-card:hover .article-card-thumb img { transform: scale(1.05); }
.article-card-no-thumb {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-gray-100));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  color: var(--color-primary);
  opacity: .4;
}
.article-card-category {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  background: var(--color-primary);
  color: white;
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  padding: 3px var(--space-3);
  border-radius: 50px;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.article-card-body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}
.article-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.article-card-meta time { display: flex; align-items: center; gap: var(--space-1); }
.article-card-title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  line-height: var(--leading-snug);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card:hover .article-card-title { color: var(--color-primary); }
.article-card-excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border);
  background: var(--color-gray-50);
}
.article-card-read-more {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  transition: gap var(--transition-fast);
}
.article-card:hover .article-card-read-more { gap: var(--space-2); }
.article-card-reading-time {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* =========================================================
   SINGLE ARTICLE / POST
   ========================================================= */
.single-article { max-width: var(--content-width); }

.article-header {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  margin-bottom: var(--space-6);
}
.article-header-thumb {
  width: 100%;
  aspect-ratio: 21/9;
  object-fit: cover;
}
.article-header-body { padding: var(--space-8); }

.post-category-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: .08em;
  padding: var(--space-1) var(--space-3);
  border-radius: 50px;
  margin-bottom: var(--space-4);
  text-decoration: none;
  transition: background var(--transition-fast);
}
.post-category-badge:hover { background: var(--color-primary); color: white; }

.article-title {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  font-weight: var(--weight-bold);
  color: var(--color-text);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
  letter-spacing: -.025em;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-5);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}
.article-meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.article-meta-icon { color: var(--color-primary); width: 16px; }

/* Article Body */
.article-body {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-xl);
  padding: var(--space-8);
  margin-bottom: var(--space-6);
}
.article-lead {
  font-size: var(--text-lg);
  color: var(--color-gray-600);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-8);
  border-bottom: 2px solid var(--color-primary-light);
  font-weight: var(--weight-medium);
}
.entry-content h2 {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-primary-dark);
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-primary-light);
  line-height: var(--leading-snug);
}
.entry-content h3 {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
  line-height: var(--leading-snug);
}
.entry-content h4 {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}
.entry-content h5, .entry-content h6 {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-top: var(--space-5);
  margin-bottom: var(--space-2);
}
.entry-content p {
  color: var(--color-gray-700);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-5);
}
.entry-content ul, .entry-content ol {
  margin-bottom: var(--space-5);
  padding-left: var(--space-6);
}
.entry-content ul { list-style: none; padding-left: 0; }
.entry-content ul li {
  padding-left: var(--space-6);
  position: relative;
  margin-bottom: var(--space-2);
  color: var(--color-gray-700);
  line-height: var(--leading-relaxed);
}
.entry-content ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: .6em;
  width: 8px; height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
  flex-shrink: 0;
}
.entry-content ol { list-style: decimal; }
.entry-content ol li {
  margin-bottom: var(--space-2);
  color: var(--color-gray-700);
  line-height: var(--leading-relaxed);
  padding-left: var(--space-2);
}
.entry-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}
.entry-content a:hover { color: var(--color-primary-dark); }
.entry-content strong { font-weight: var(--weight-semibold); color: var(--color-text); }
.entry-content em { font-style: italic; }

/* Medical Info Box */
.entry-content blockquote,
.medical-info-box {
  background: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  padding: var(--space-5) var(--space-6);
  margin: var(--space-6) 0;
  font-size: var(--text-base);
  color: var(--color-primary-dark);
}
.medical-warning-box {
  background: #fff8f0;
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  padding: var(--space-5) var(--space-6);
  margin: var(--space-6) 0;
}
.medical-warning-box p { color: #7c2d12; margin: 0; }

/* Table of Contents */
.toc-box {
  background: var(--color-gray-50);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-5) var(--space-6);
  margin-bottom: var(--space-8);
}
.toc-title {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.toc-list { list-style: none; padding: 0; margin: 0; }
.toc-list li { margin: 0; padding: 0; }
.toc-list li::before { display: none; }
.toc-list a {
  display: block;
  padding: var(--space-1) 0 var(--space-1) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-primary);
  border-left: 2px solid var(--color-border);
  text-decoration: none;
  transition: border-color var(--transition-fast), color var(--transition-fast);
  margin-bottom: var(--space-1);
}
.toc-list a:hover { border-color: var(--color-primary); color: var(--color-primary-dark); text-decoration: none; }

/* Medical Data Table */
.entry-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-6) 0;
  font-size: var(--text-sm);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.entry-content thead { background: var(--color-primary); color: white; }
.entry-content th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-weight: var(--weight-semibold);
}
.entry-content td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}
.entry-content tr:nth-child(even) td { background: var(--color-gray-50); }
.entry-content tr:last-child td { border-bottom: none; }

/* Article Share */
.article-share {
  background: var(--color-gray-50);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-xl);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.article-share-label {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: .05em;
  flex-shrink: 0;
}
.share-buttons { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: 50px;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  text-decoration: none;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  cursor: pointer;
  border: none;
}
.share-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.share-btn-facebook { background: #1877f2; color: white; }
.share-btn-twitter  { background: #1da1f2; color: white; }
.share-btn-whatsapp { background: #25d366; color: white; }
.share-btn-copy     { background: var(--color-gray-200); color: var(--color-text); }

/* Article Tags */
.article-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-5) var(--space-8);
  border-top: 1px solid var(--color-border);
}
.article-tags-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: var(--weight-medium);
  flex-shrink: 0;
}
.tag-pill {
  display: inline-block;
  background: var(--color-gray-100);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  padding: var(--space-1) var(--space-3);
  border-radius: 50px;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
  border: 1px solid var(--color-border);
}
.tag-pill:hover { background: var(--color-primary); color: white; border-color: var(--color-primary); }

/* Post Navigation */
.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}
.post-nav-item {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-4) var(--space-5);
  text-decoration: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.post-nav-item:hover { border-color: var(--color-primary); box-shadow: var(--shadow-md); }
.post-nav-item.next { text-align: right; }
.post-nav-direction {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: .05em;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.post-nav-item.next .post-nav-direction { justify-content: flex-end; }
.post-nav-title {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Related Posts */
.related-posts {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-xl);
  padding: var(--space-8);
  margin-bottom: var(--space-6);
}
.related-posts-title {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.related-posts-title::after {
  content: '';
  flex: 1;
  height: 2px;
  background: var(--color-border);
}
.related-posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-4);
}

/* Author Box */
.author-box {
  background: var(--color-primary-light);
  border: 1px solid rgba(0,86,179,.15);
  border-radius: var(--border-radius-xl);
  padding: var(--space-6) var(--space-8);
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-5);
}
.author-avatar {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  flex-shrink: 0;
}
.author-info h4 {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-1);
}
.author-info p { font-size: var(--text-sm); color: var(--color-text-muted); margin: 0; }

/* Medical Disclaimer */
.medical-disclaimer {
  background: #fffbeb;
  border: 1px solid #fcd34d;
  border-radius: var(--border-radius-lg);
  padding: var(--space-5) var(--space-6);
  margin-bottom: var(--space-6);
  font-size: var(--text-sm);
  color: #92400e;
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}
.disclaimer-icon { flex-shrink: 0; font-size: 20px; }

/* =========================================================
   SIDEBAR
   ========================================================= */
.sidebar { display: flex; flex-direction: column; gap: var(--space-5); }

.widget {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-xl);
  overflow: hidden;
}
.widget-header {
  background: var(--color-primary);
  padding: var(--space-4) var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.widget-title {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: white;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin: 0;
}
.widget-body { padding: var(--space-5); }

/* Search Widget */
.widget-search-form {
  display: flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  background: var(--color-gray-50);
}
.widget-search-input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text);
}
.widget-search-btn {
  background: var(--color-primary);
  color: white;
  border: none;
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  transition: background var(--transition-fast);
  display: flex;
  align-items: center;
}
.widget-search-btn:hover { background: var(--color-primary-dark); }

/* Recent Posts Widget */
.recent-posts-list { display: flex; flex-direction: column; gap: var(--space-3); }
.recent-post-item {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  text-decoration: none;
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  transition: opacity var(--transition-fast);
}
.recent-post-item:last-child { border-bottom: none; padding-bottom: 0; }
.recent-post-item:hover { opacity: .8; }
.recent-post-thumb {
  width: 64px; height: 64px;
  border-radius: var(--border-radius);
  object-fit: cover;
  flex-shrink: 0;
  background: var(--color-gray-100);
}
.recent-post-thumb-placeholder {
  width: 64px; height: 64px;
  border-radius: var(--border-radius);
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 24px;
  flex-shrink: 0;
}
.recent-post-info { flex: 1; min-width: 0; }
.recent-post-title {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  line-height: var(--leading-snug);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--space-1);
}
.recent-post-date { font-size: var(--text-xs); color: var(--color-text-muted); }

/* Categories Widget */
.categories-list { display: flex; flex-direction: column; gap: var(--space-1); }
.category-list-item a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--border-radius-sm);
  font-size: var(--text-sm);
  color: var(--color-text);
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.category-list-item a:hover { background: var(--color-primary-light); color: var(--color-primary); }
.category-count {
  background: var(--color-gray-100);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  padding: 2px var(--space-2);
  border-radius: 50px;
}

/* A-Z Index Widget */
.az-index {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}
.az-letter {
  width: 32px; height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  border-radius: var(--border-radius-sm);
  background: var(--color-gray-100);
  color: var(--color-text);
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.az-letter:hover { background: var(--color-primary); color: white; }
.az-letter.has-posts { background: var(--color-primary-light); color: var(--color-primary); }

/* =========================================================
   ARCHIVE / CATEGORY PAGE
   ========================================================= */
.archive-header {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  padding-block: var(--space-12);
  margin-bottom: var(--space-8);
}
.archive-header .container { display: flex; align-items: center; gap: var(--space-6); }
.archive-icon {
  width: 80px; height: 80px;
  background: rgba(255,255,255,.15);
  border-radius: var(--border-radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  flex-shrink: 0;
}
.archive-info { flex: 1; }
.archive-title {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  color: white;
  margin-bottom: var(--space-2);
}
.archive-description {
  color: rgba(255,255,255,.75);
  font-size: var(--text-base);
  max-width: 600px;
}
.archive-count {
  background: rgba(255,255,255,.15);
  color: white;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  padding: var(--space-1) var(--space-4);
  border-radius: 50px;
  border: 1px solid rgba(255,255,255,.25);
  flex-shrink: 0;
}

/* Filters & Sort */
.archive-filters {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
  padding: var(--space-4) var(--space-5);
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
}
.filter-label { font-size: var(--text-sm); color: var(--color-text-muted); }
.view-toggle { display: flex; gap: var(--space-2); }
.view-btn {
  width: 36px; height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  color: var(--color-text-muted);
  background: white;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.view-btn.active, .view-btn:hover { background: var(--color-primary); border-color: var(--color-primary); color: white; }

/* =========================================================
   SEARCH RESULTS
   ========================================================= */
.search-header {
  background: var(--color-primary-light);
  border-bottom: 2px solid var(--color-primary);
  padding: var(--space-8) 0;
  margin-bottom: var(--space-8);
}
.search-title { font-size: var(--text-2xl); font-weight: var(--weight-bold); color: var(--color-text); margin-bottom: var(--space-2); }
.search-subtitle { font-size: var(--text-base); color: var(--color-text-muted); }
.search-query { color: var(--color-primary); font-weight: var(--weight-semibold); }
.search-count { color: var(--color-text-muted); font-size: var(--text-sm); }

/* =========================================================
   PAGINATION
   ========================================================= */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-8) 0;
}
.page-numbers {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  text-decoration: none;
  transition: all var(--transition-fast);
  background: white;
}
.page-numbers:hover { border-color: var(--color-primary); color: var(--color-primary); }
.page-numbers.current {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  pointer-events: none;
}
.page-numbers.dots { border: none; background: none; }
.page-numbers.prev, .page-numbers.next { width: auto; padding: 0 var(--space-4); gap: var(--space-1); }

/* =========================================================
   COMMENTS
   ========================================================= */
.comments-area {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-xl);
  padding: var(--space-8);
  margin-bottom: var(--space-6);
}
.comments-title {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 2px solid var(--color-border);
}
.comment { margin-bottom: var(--space-6); }
.comment-body {
  background: var(--color-gray-50);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-5);
}
.comment-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.comment-author-name { font-weight: var(--weight-semibold); font-size: var(--text-sm); }
.comment-date { font-size: var(--text-xs); color: var(--color-text-muted); }
.comment-text p { font-size: var(--text-sm); margin: 0; }
.comment-reply-link {
  font-size: var(--text-xs);
  color: var(--color-primary);
  text-decoration: none;
  font-weight: var(--weight-medium);
  margin-top: var(--space-2);
  display: inline-block;
}
.children { margin-left: var(--space-8); margin-top: var(--space-4); }

/* Comment Form */
.comment-form-wrap { margin-top: var(--space-8); }
.comment-form-title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  margin-bottom: var(--space-5);
}
.comment-form { display: flex; flex-direction: column; gap: var(--space-4); }
.comment-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.form-field label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.form-field input, .form-field textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-gray-50);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}
.form-field input:focus, .form-field textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}
.form-field textarea { min-height: 120px; resize: vertical; }
.btn-submit {
  background: var(--color-primary);
  color: white;
  border: none;
  padding: var(--space-3) var(--space-8);
  border-radius: var(--border-radius);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  cursor: pointer;
  align-self: flex-start;
  transition: background var(--transition-fast), transform var(--transition-fast);
}
.btn-submit:hover { background: var(--color-primary-dark); transform: translateY(-1px); }

/* =========================================================
   404 PAGE
   ========================================================= */
.error-404 {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-16);
}
.error-404-code {
  font-size: 8rem;
  font-weight: 900;
  color: var(--color-primary-light);
  line-height: 1;
  display: block;
}
.error-404-title {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  margin-bottom: var(--space-4);
}
.error-404-text { color: var(--color-text-muted); margin-bottom: var(--space-8); }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  background: var(--color-gray-900);
  color: var(--color-gray-400);
}
.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  padding-block: var(--space-16);
}
.footer-brand .site-title { color: white; font-size: var(--text-xl); margin-bottom: var(--space-3); }
.footer-description {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-gray-400);
  margin-bottom: var(--space-5);
}
.footer-social { display: flex; gap: var(--space-3); }
.footer-social a {
  width: 36px; height: 36px;
  background: var(--color-gray-800);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-400);
  font-size: 16px;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.footer-social a:hover { background: var(--color-primary); color: white; }
.footer-col-title {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: white;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: var(--space-5);
}
.footer-links { display: flex; flex-direction: column; gap: var(--space-2); }
.footer-links a {
  font-size: var(--text-sm);
  color: var(--color-gray-400);
  text-decoration: none;
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.footer-links a:hover { color: white; }
.footer-contact { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
}
.footer-contact-icon { color: var(--color-secondary); font-size: 16px; flex-shrink: 0; margin-top: 2px; }

.footer-bottom {
  border-top: 1px solid var(--color-gray-800);
  padding-block: var(--space-5);
}
.footer-bottom .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.footer-copyright { font-size: var(--text-sm); }
.footer-bottom-links { display: flex; gap: var(--space-5); }
.footer-bottom-links a {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.footer-bottom-links a:hover { color: white; }
.footer-medical-badge {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(0,168,150,.15);
  border: 1px solid rgba(0,168,150,.3);
  color: var(--color-secondary);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  padding: var(--space-1) var(--space-3);
  border-radius: 50px;
}

/* =========================================================
   READING PROGRESS BAR
   ========================================================= */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  z-index: 9999;
  transition: width .1s linear;
}

/* =========================================================
   BACK TO TOP
   ========================================================= */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 44px; height: 44px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition), background var(--transition), opacity var(--transition);
  opacity: 0;
  pointer-events: none;
  z-index: 100;
  border: none;
}
.back-to-top.visible { opacity: 1; pointer-events: auto; }
.back-to-top:hover { transform: translateY(-4px); background: var(--color-primary-dark); }

/* =========================================================
   UTILITIES
   ========================================================= */
.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;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--border-radius);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition-fast);
}
.btn-primary { background: var(--color-primary); color: white; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-outline {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary); color: white; }
.btn-sm { padding: var(--space-2) var(--space-4); font-size: var(--text-sm); }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1024px) {
  .footer-main { grid-template-columns: 1fr 1fr; }
  .primary-nav, .header-search { display: none; }
  .mobile-menu-toggle { display: flex; }
  .hero-stats { gap: var(--space-5); }
}

@media (max-width: 768px) {
  :root { --header-height: 60px; }
  .top-bar-info span { display: none; }
  .footer-main { grid-template-columns: 1fr; }
  .post-nav { grid-template-columns: 1fr; }
  .comment-form-row { grid-template-columns: 1fr; }
  .hero-title { font-size: var(--text-3xl); }
  .article-header-body { padding: var(--space-5); }
  .article-body { padding: var(--space-5); }
  .article-share { flex-direction: column; align-items: flex-start; }
  .footer-bottom .container { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .container { padding-inline: var(--space-4); }
  .hero-search-form { flex-direction: column; border-radius: var(--border-radius-lg); }
  .hero-search-input { width: 100%; }
  .hero-search-btn { width: 100%; justify-content: center; border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg); }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .articles-grid { grid-template-columns: 1fr; }
}

/* =========================================================
   PRINT STYLES
   ========================================================= */
@media print {
  .site-header, .site-footer, .sidebar, .article-share, .related-posts,
  .back-to-top, .reading-progress, .post-nav { display: none !important; }
  .content-area { grid-template-columns: 1fr !important; }
  .article-body { border: none !important; padding: 0 !important; }
  body { font-size: 12pt; line-height: 1.5; }
  a::after { content: " (" attr(href) ")"; font-size: 10pt; }
}

/* =========================================================
   MOBILE MENU OVERLAY
   ========================================================= */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}
.mobile-menu.active { opacity: 1; visibility: visible; }
.mobile-menu-panel {
  position: absolute;
  top: 0; right: 0;
  width: min(380px, 100%);
  height: 100%;
  background: white;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--transition);
}
.mobile-menu.active .mobile-menu-panel { transform: translateX(0); }
.mobile-menu-header {
  background: var(--color-primary);
  padding: var(--space-5) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.mobile-menu-close {
  color: white;
  background: rgba(255,255,255,.15);
  border: none;
  width: 36px; height: 36px;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}
.mobile-nav { padding: var(--space-4); }
.mobile-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-4);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  transition: color var(--transition-fast), background var(--transition-fast);
  border-radius: var(--border-radius-sm);
}
.mobile-nav a:hover { color: var(--color-primary); background: var(--color-primary-light); }

/* =========================================================
   LOADING SKELETON
   ========================================================= */
.skeleton {
  background: linear-gradient(90deg, var(--color-gray-200) 25%, var(--color-gray-100) 50%, var(--color-gray-200) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--border-radius);
}
@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}