/*
Theme Name: Engineering Hulk
Theme URI: https://engineeringhulk.com
Author: Engineering Hulk
Author URI: https://engineeringhulk.com
Description: A minimalist, SEO-optimized WordPress theme for Engineering Hulk — built for speed, readability, and search engine dominance. Features schema markup, Core Web Vitals optimization, semantic HTML5, and a clean editorial aesthetic.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: engineeringhulk
Tags: blog, minimalist, seo, fast, engineering, technical, two-columns, custom-colors, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready
*/

/* ============================================================
   CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
  /* Brand Colors */
  --color-primary:       #0a0a0a;
  --color-accent:        #00C853;
  --color-accent-dark:   #00a844;
  --color-accent-light:  #e8fdf0;
  --color-surface:       #ffffff;
  --color-surface-2:     #f7f8f7;
  --color-surface-3:     #eef0ee;
  --color-border:        #e2e5e2;
  --color-text:          #1a1a1a;
  --color-text-muted:    #6b7280;
  --color-text-light:    #9ca3af;
  --color-link:          #0a7c3e;
  --color-link-hover:    #00C853;

  /* Typography — web fonts + system fallbacks (fonts load async, fallbacks show instantly) */
  --font-display:  'Syne', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body:     'Literata', Georgia, 'Times New Roman', serif;
  --font-mono:     'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  --font-ui:       'DM Sans', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;

  /* Type Scale */
  --text-xs:    0.75rem;
  --text-sm:    0.875rem;
  --text-base:  1rem;
  --text-md:    1.125rem;
  --text-lg:    1.25rem;
  --text-xl:    1.5rem;
  --text-2xl:   1.875rem;
  --text-3xl:   2.25rem;
  --text-4xl:   3rem;
  --text-5xl:   3.75rem;

  /* 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:    1200px;
  --content-max:      740px;
  --sidebar-width:    320px;
  --radius-sm:        4px;
  --radius-md:        8px;
  --radius-lg:        12px;
  --radius-xl:        20px;

  /* Shadows */
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:   0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg:   0 10px 30px rgba(0,0,0,0.10), 0 4px 8px rgba(0,0,0,0.04);
  --shadow-accent: 0 4px 20px rgba(0, 200, 83, 0.2);

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

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-md);
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-surface);
}

img, video { max-width: 100%; height: auto; display: block; }
svg { display: inline-block; }

a {
  color: var(--color-link);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-link-hover); }
a:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; border-radius: 2px; }

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem, 5vw, var(--text-4xl)); }
h2 { font-size: clamp(1.5rem, 3.5vw, var(--text-3xl)); }
h3 { font-size: clamp(1.25rem, 2.5vw, var(--text-2xl)); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-md); }

p { margin-bottom: var(--space-5); }
p:last-child { margin-bottom: 0; }

strong, b { font-weight: 700; }
em, i { font-style: italic; }

blockquote {
  margin: var(--space-8) 0;
  padding: var(--space-6) var(--space-8);
  border-left: 4px solid var(--color-accent);
  background: var(--color-accent-light);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-primary);
}
blockquote cite {
  display: block;
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  font-style: normal;
  font-family: var(--font-ui);
  color: var(--color-text-muted);
}

code, kbd, samp {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-surface-3);
  padding: 0.1em 0.4em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  color: #0a5c2e;
}

pre {
  margin: var(--space-8) 0;
  padding: var(--space-6);
  background: #0d1117;
  border-radius: var(--radius-lg);
  overflow-x: auto;
  border: 1px solid #21262d;
  box-shadow: var(--shadow-md);
}
pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: var(--text-sm);
  color: #e6edf3;
  line-height: 1.6;
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-12) 0;
}

/* Lists */
ul, ol { padding-left: var(--space-8); margin-bottom: var(--space-5); }
li { margin-bottom: var(--space-2); }
li > ul, li > ol { margin-top: var(--space-2); margin-bottom: 0; }

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-8) 0;
  font-family: var(--font-ui);
  font-size: var(--text-sm);
}
thead { background: var(--color-primary); color: white; }
th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-weight: 600;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
td { padding: var(--space-3) var(--space-4); border-bottom: 1px solid var(--color-border); }
tbody tr:nth-child(even) { background: var(--color-surface-2); }
tbody tr:hover { background: var(--color-accent-light); }

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
@media (min-width: 768px) { .container { padding: 0 var(--space-8); } }
@media (min-width: 1200px) { .container { padding: 0 var(--space-10); } }

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

/* Content + Sidebar layout */
.content-sidebar-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  padding: var(--space-12) 0;
}
@media (min-width: 1024px) {
  .content-sidebar-wrap {
    grid-template-columns: 1fr var(--sidebar-width);
    gap: var(--space-16);
  }
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-base);
}
.site-header.scrolled { box-shadow: var(--shadow-sm); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: var(--space-6);
}

/* Logo */
.site-logo { display: flex; align-items: center; gap: var(--space-3); flex-shrink: 0; text-decoration: none; }
.site-logo img { height: 36px; width: auto; }
.site-logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.03em;
  line-height: 1;
  text-decoration: none;
}
.site-logo-text span { color: var(--color-accent); }

/* Primary Navigation */
.primary-nav { display: none; }
@media (min-width: 768px) { .primary-nav { display: flex; align-items: center; } }

.primary-nav ul { display: flex; align-items: center; gap: var(--space-1); list-style: none; padding: 0; margin: 0; }
.primary-nav a {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), color var(--transition-fast);
}
.primary-nav a:hover, .primary-nav .current-menu-item > a {
  background: var(--color-accent-light);
  color: var(--color-link);
}
.primary-nav .current-menu-item > a { font-weight: 600; }

/* Dropdown */
.primary-nav li { position: relative; }
.primary-nav .sub-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 220px;
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  z-index: 200;
  flex-direction: column;
  gap: 0;
  animation: dropIn 0.15s ease;
}
.primary-nav li:hover > .sub-menu { display: flex; }
.primary-nav .sub-menu a {
  width: 100%;
  justify-content: flex-start;
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-4);
}

@keyframes dropIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Header Actions */
.header-actions { display: flex; align-items: center; gap: var(--space-3); }

.search-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--color-text);
  transition: background var(--transition-fast), border-color var(--transition-fast);
}
.search-toggle:hover { background: var(--color-surface-2); border-color: var(--color-accent); }

/* Mobile Menu Toggle */
.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
@media (min-width: 768px) { .menu-toggle { display: none; } }
.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}
.menu-toggle.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.menu-toggle.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* Mobile Nav */
.mobile-nav {
  display: none;
  background: white;
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) 0;
}
.mobile-nav.open { display: block; }
.mobile-nav ul { list-style: none; padding: 0 var(--space-6); margin: 0; }
.mobile-nav li { border-bottom: 1px solid var(--color-border); }
.mobile-nav li:last-child { border-bottom: none; }
.mobile-nav a {
  display: block;
  padding: var(--space-3) 0;
  font-family: var(--font-ui);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
}
.mobile-nav .sub-menu { padding-left: var(--space-4); }

/* Search Overlay */
.search-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 300;
  backdrop-filter: blur(4px);
  align-items: flex-start;
  padding-top: 100px;
}
.search-overlay.open { display: flex; }
.search-box {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.search-box form {
  display: flex;
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 2px solid var(--color-accent);
}
.search-box input {
  flex: 1;
  padding: var(--space-4) var(--space-6);
  border: none;
  font-family: var(--font-ui);
  font-size: var(--text-md);
  outline: none;
  background: transparent;
}
.search-box button {
  padding: var(--space-4) var(--space-6);
  background: var(--color-accent);
  border: none;
  cursor: pointer;
  color: white;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: var(--text-sm);
  transition: background var(--transition-fast);
}
.search-box button:hover { background: var(--color-accent-dark); }

/* ============================================================
   HERO — HOMEPAGE
   ============================================================ */
.hero {
  padding: var(--space-20) 0 var(--space-16);
  background: var(--color-primary);
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  align-items: center;
}
@media (min-width: 900px) {
  .hero-inner { grid-template-columns: 1fr 1fr; }
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}
.hero-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-accent);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 6vw, 3.75rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: white;
  margin-bottom: var(--space-5);
}
.hero-title em { font-style: normal; color: var(--color-accent); }

.hero-desc {
  font-family: var(--font-body);
  font-size: var(--text-md);
  line-height: 1.75;
  color: #a0aba0;
  margin-bottom: var(--space-8);
}

.hero-cta { display: flex; gap: var(--space-3); flex-wrap: wrap; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  line-height: 1;
}
.btn-primary {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: white;
  box-shadow: var(--shadow-accent);
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  color: white;
  border-color: rgba(255,255,255,0.3);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.6);
  color: white;
}
.btn-sm { padding: var(--space-2) var(--space-4); font-size: var(--text-xs); }
.btn-dark {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}
.btn-dark:hover {
  background: #222;
  color: white;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Hero Stats */
.hero-stats {
  display: flex;
  gap: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: var(--space-8);
}
.stat-item {}
.stat-number {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
}
.stat-label {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: #6b7f6b;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: var(--space-1);
}

/* Hero Featured Post */
.hero-featured-post {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.hero-featured-post:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.hero-featured-img { aspect-ratio: 16/9; overflow: hidden; }
.hero-featured-img img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-slow); }
.hero-featured-post:hover .hero-featured-img img { transform: scale(1.04); }
.hero-featured-body { padding: var(--space-6); }
.hero-featured-cat {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
  text-decoration: none;
}
.hero-featured-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: white;
  line-height: 1.3;
  margin-bottom: var(--space-3);
}
.hero-featured-meta {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: #6b7f6b;
}

/* ============================================================
   POST CARDS
   ============================================================ */
.post-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  display: flex;
  flex-direction: column;
}
.post-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.post-card-thumb { aspect-ratio: 16/9; overflow: hidden; background: var(--color-surface-3); }
.post-card-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-slow); }
.post-card:hover .post-card-thumb img { transform: scale(1.05); }
.post-card-thumb-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  background: var(--color-surface-3);
}

.post-card-body { padding: var(--space-6); flex: 1; display: flex; flex-direction: column; }

.post-card-cat {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  text-decoration: none;
  margin-bottom: var(--space-3);
}
.post-card-cat:hover { color: var(--color-accent-dark); }

.post-card-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--space-3);
}
.post-card-title a { color: var(--color-primary); text-decoration: none; }
.post-card-title a:hover { color: var(--color-link); }

.post-card-excerpt {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-4);
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}
.post-card-meta {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.post-card-meta .dot::before { content: '·'; }
.read-more {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-link);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-1);
  transition: gap var(--transition-fast);
}
.read-more:hover { color: var(--color-accent); gap: var(--space-2); }

/* Post Grid */
.posts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}
@media (min-width: 600px) { .posts-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .posts-grid { grid-template-columns: repeat(3, 1fr); } }

/* List Layout */
.posts-list .post-card {
  flex-direction: row;
  align-items: flex-start;
}
.posts-list .post-card-thumb {
  width: 260px;
  flex-shrink: 0;
  aspect-ratio: 4/3;
}
@media (max-width: 640px) {
  .posts-list .post-card { flex-direction: column; }
  .posts-list .post-card-thumb { width: 100%; }
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-border);
  gap: var(--space-4);
  flex-wrap: wrap;
}
.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  line-height: 1;
}
.section-title span { color: var(--color-accent); }
.section-link {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-link);
  text-decoration: none;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.section-link:hover { color: var(--color-accent); }

/* ============================================================
   HOMEPAGE SECTIONS
   ============================================================ */
.home-section { padding: var(--space-16) 0; }
.home-section + .home-section { padding-top: 0; }

/* Categories Strip */
.categories-strip {
  background: var(--color-surface-2);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-6) 0;
}
.categories-list {
  display: flex;
  gap: var(--space-3);
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 4px;
  flex-wrap: wrap;
}
.category-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: white;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--transition-fast);
}
.category-pill:hover, .category-pill.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}
.category-pill .count {
  font-size: var(--text-xs);
  background: var(--color-surface-3);
  color: var(--color-text-muted);
  padding: 1px 6px;
  border-radius: 100px;
}
.category-pill:hover .count, .category-pill.active .count {
  background: rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.8);
}

/* Featured Posts Carousel-style */
.featured-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 768px) {
  .featured-strip { grid-template-columns: 2fr 1fr 1fr; }
}
.featured-main { grid-row: span 2; }
.featured-main .post-card-thumb { aspect-ratio: 4/3; }

/* Newsletter Section */
.newsletter-section {
  background: var(--color-primary);
  padding: var(--space-16) 0;
  position: relative;
  overflow: hidden;
}
.newsletter-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}
.newsletter-inner {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
}
.newsletter-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-4);
}
.newsletter-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  color: white;
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}
.newsletter-desc {
  color: #8a9a8a;
  font-family: var(--font-body);
  margin-bottom: var(--space-8);
}
.newsletter-form {
  display: flex;
  gap: var(--space-2);
  background: rgba(255,255,255,0.06);
  padding: var(--space-2);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255,255,255,0.1);
}
.newsletter-form input {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  background: none;
  border: none;
  color: white;
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  outline: none;
}
.newsletter-form input::placeholder { color: #6b7f6b; }
.newsletter-form button {
  padding: var(--space-3) var(--space-6);
  background: var(--color-accent);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap;
}
.newsletter-form button:hover {
  background: var(--color-accent-dark);
  transform: scale(1.02);
}
.newsletter-note {
  margin-top: var(--space-4);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: #5a6b5a;
}

/* ============================================================
   SINGLE POST
   ============================================================ */
.single-post { padding: var(--space-12) 0; }

.post-header { margin-bottom: var(--space-10); }
.post-breadcrumb {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.post-breadcrumb a { color: var(--color-text-muted); text-decoration: none; }
.post-breadcrumb a:hover { color: var(--color-link); }
.post-breadcrumb .sep { color: var(--color-border); }
.post-breadcrumb .current { color: var(--color-text); }

.post-category-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-accent-light);
  color: var(--color-link);
  padding: var(--space-1) var(--space-4);
  border-radius: 100px;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  margin-bottom: var(--space-5);
  border: 1px solid rgba(0,200,83,0.2);
}

.post-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}

.post-intro {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  line-height: 1.75;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  padding-left: var(--space-5);
  border-left: 3px solid var(--color-accent);
}

.post-meta-bar {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  flex-wrap: wrap;
  padding: var(--space-4) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-border);
}
.author-info {}
.author-name {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
}
.author-name:hover { color: var(--color-link); }
.post-date {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.post-meta-divider { width: 1px; height: 20px; background: var(--color-border); }
.read-time, .post-views {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Post Featured Image */
.post-featured-image {
  margin: var(--space-8) 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 16/8;
  box-shadow: var(--shadow-lg);
}
.post-featured-image img { width: 100%; height: 100%; object-fit: cover; }

/* Post Content */
.post-content {
  max-width: var(--content-max);
  font-size: var(--text-md);
  line-height: 1.8;
}
.post-content h2 {
  font-size: clamp(1.35rem, 3vw, 1.875rem);
  margin-top: var(--space-12);
  margin-bottom: var(--space-5);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}
.post-content h2:first-child { border-top: none; padding-top: 0; margin-top: 0; }
.post-content h3 { margin-top: var(--space-8); margin-bottom: var(--space-4); }
.post-content h4 { margin-top: var(--space-6); margin-bottom: var(--space-3); }
.post-content img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  margin: var(--space-8) 0;
}
.post-content .wp-caption { margin: var(--space-8) 0; }
.post-content .wp-caption-text {
  text-align: center;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

/* Table of Contents */
.toc {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin: var(--space-8) 0;
}
.toc-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.toc ol { padding-left: var(--space-5); margin: 0; }
.toc li {
  margin-bottom: var(--space-2);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
}
.toc a { color: var(--color-link); text-decoration: none; }
.toc a:hover { text-decoration: underline; }
.toc ol ol { margin-top: var(--space-2); padding-left: var(--space-4); }

/* Tags */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}
.tag-label {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-right: var(--space-2);
  align-self: center;
}
.tag-link {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface-3);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: all var(--transition-fast);
}
.tag-link:hover { background: var(--color-primary); color: white; border-color: var(--color-primary); }

/* Share Buttons */
.post-share {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-6);
  flex-wrap: wrap;
}
.share-label {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-fast);
  border: none;
  cursor: pointer;
}
.share-twitter { background: #000; color: white; }
.share-twitter:hover { background: #1a1a1a; color: white; }
.share-linkedin { background: #0077b5; color: white; }
.share-linkedin:hover { background: #006398; color: white; }
.share-copy { background: var(--color-surface-3); color: var(--color-text); border: 1px solid var(--color-border); }
.share-copy:hover { background: var(--color-accent-light); color: var(--color-link); }

/* Author Box */
.author-box {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-top: var(--space-12);
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
}
@media (max-width: 640px) { .author-box { flex-direction: column; } }
.author-box-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 3px solid var(--color-accent);
}
.author-box-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-1);
}
.author-box-name a { color: var(--color-primary); text-decoration: none; }
.author-box-role {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}
.author-box-bio {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* Related Posts */
.related-posts { margin-top: var(--space-16); }
.related-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  margin-bottom: var(--space-8);
}

/* ============================================================
   PROGRESS BAR
   ============================================================ */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), #00e676);
  z-index: 1000;
  transition: width 0.05s linear;
}

/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar-widget {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}
.widget-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

/* Sticky Sidebar */
@media (min-width: 1024px) {
  .sidebar { position: sticky; top: 80px; }
}

/* Recent Posts Widget */
.recent-posts-list { list-style: none; padding: 0; margin: 0; }
.recent-posts-list li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}
.recent-posts-list li:last-child { border-bottom: none; padding-bottom: 0; }
.rp-thumb {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  object-fit: cover;
  flex-shrink: 0;
}
.rp-body {}
.rp-title {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-primary);
  text-decoration: none;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.rp-title:hover { color: var(--color-link); }
.rp-date {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

/* Categories Widget */
.categories-widget-list { list-style: none; padding: 0; margin: 0; }
.categories-widget-list li {
  border-bottom: 1px solid var(--color-border);
}
.categories-widget-list li:last-child { border-bottom: none; }
.categories-widget-list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) 0;
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.categories-widget-list a:hover { color: var(--color-link); }
.cat-count {
  font-size: var(--text-xs);
  background: var(--color-surface-3);
  padding: 2px 8px;
  border-radius: 100px;
  color: var(--color-text-muted);
}

/* Tag Cloud Widget */
.tag-cloud { display: flex; flex-wrap: wrap; gap: var(--space-2); }

/* Ad / Promo Widget */
.promo-widget {
  background: var(--color-primary);
  border-color: var(--color-primary);
  text-align: center;
}
.promo-widget .widget-title { color: rgba(255,255,255,0.5); border-color: rgba(255,255,255,0.2); }
.promo-widget-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  color: white;
  margin-bottom: var(--space-3);
}
.promo-widget-text {
  font-size: var(--text-sm);
  color: #8a9a8a;
  margin-bottom: var(--space-5);
}

/* ============================================================
   PAGINATION
   ============================================================ */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-12);
  flex-wrap: wrap;
}
.page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  transition: all var(--transition-fast);
}
.page-numbers:hover {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}
.page-numbers.current {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}
.page-numbers.dots { border-color: transparent; background: none; }

/* ============================================================
   COMMENTS
   ============================================================ */
.comments-section { margin-top: var(--space-16); padding-top: var(--space-12); border-top: 1px solid var(--color-border); }
.comments-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  margin-bottom: var(--space-8);
}

.comment-list { list-style: none; padding: 0; margin: 0; }
.comment-item { margin-bottom: var(--space-6); }
.comment-body {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}
.comment-avatar { width: 44px; height: 44px; border-radius: 50%; flex-shrink: 0; }
.comment-content-wrap {
  flex: 1;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
}
.comment-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}
.comment-author-name {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary);
}
.comment-date {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.comment-text { font-size: var(--text-base); line-height: 1.65; }
.comment-reply-link {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-link);
  text-decoration: none;
  margin-top: var(--space-2);
  display: inline-block;
}
.children { margin-left: var(--space-10); margin-top: var(--space-4); list-style: none; padding: 0; }

/* Comment Form */
.comment-respond { margin-top: var(--space-10); }
.comment-reply-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-6);
}
.comment-form .form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}
@media (min-width: 600px) { .comment-form .form-row { grid-template-columns: 1fr 1fr; } }
.form-group { display: flex; flex-direction: column; gap: var(--space-2); }
.form-label {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.form-input, .form-textarea {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text);
  background: white;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  resize: vertical;
}
.form-input:focus, .form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0,200,83,0.12);
}
.form-textarea { min-height: 140px; }

/* ============================================================
   404 PAGE
   ============================================================ */
.not-found {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-16) var(--space-6);
}
.not-found-number {
  font-family: var(--font-display);
  font-size: clamp(6rem, 20vw, 12rem);
  font-weight: 900;
  line-height: 1;
  color: var(--color-border);
  letter-spacing: -0.05em;
}
.not-found-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
}
.not-found-text {
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================================
   ARCHIVE / CATEGORY PAGE
   ============================================================ */
.archive-header {
  padding: var(--space-16) 0 var(--space-12);
  background: var(--color-surface-2);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-12);
}
.archive-label {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}
.archive-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}
.archive-desc {
  font-size: var(--text-md);
  color: var(--color-text-muted);
  max-width: 560px;
}

/* Search Results */
.search-results-header {
  padding: var(--space-12) 0 var(--space-8);
}
.search-query {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
}
.search-query em { font-style: normal; color: var(--color-accent); }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-primary);
  color: #a0aba0;
  margin-top: var(--space-24);
}
.footer-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  padding: var(--space-16) 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
@media (min-width: 640px) { .footer-top { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .footer-top { grid-template-columns: 2fr 1fr 1fr 1fr; } }

.footer-brand {}
.footer-logo {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  color: white;
  text-decoration: none;
  letter-spacing: -0.02em;
  display: inline-block;
  margin-bottom: var(--space-4);
}
.footer-logo span { color: var(--color-accent); }
.footer-tagline {
  font-size: var(--text-sm);
  line-height: 1.65;
  margin-bottom: var(--space-6);
  color: #6b7f6b;
}
.footer-social {
  display: flex;
  gap: var(--space-3);
}
.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  color: #a0aba0;
  text-decoration: none;
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
}
.social-link:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: white;
}

.footer-col-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: white;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-5);
}
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: var(--space-3); }
.footer-links a {
  color: #6b7f6b;
  text-decoration: none;
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}
.footer-links a:hover { color: var(--color-accent); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) 0;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.footer-copy {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: #4a5a4a;
}
.footer-bottom-links {
  display: flex;
  gap: var(--space-5);
}
.footer-bottom-links a {
  color: #4a5a4a;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.footer-bottom-links a:hover { color: var(--color-accent); }

/* ============================================================
   BACK TO TOP
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--transition-base), transform var(--transition-base), background var(--transition-fast);
  z-index: 50;
}
.back-to-top.visible { opacity: 1; transform: translateY(0); }
.back-to-top:hover { background: var(--color-accent); }

/* ============================================================
   BREADCRUMBS
   ============================================================ */
.breadcrumb-nav {
  background: var(--color-surface-2);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-3) 0;
}
.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.breadcrumb-list a { color: var(--color-text-muted); text-decoration: none; }
.breadcrumb-list a:hover { color: var(--color-link); }
.breadcrumb-sep { color: var(--color-border); }

/* ============================================================
   UTILITY CLASSES
   ============================================================ */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}
.text-center { text-align: center; }
.mt-auto { margin-top: auto; }
.d-flex { display: flex; }
.align-center { align-items: center; }

/* ============================================================
   PRINT STYLES
   ============================================================ */
@media print {
  .site-header, .sidebar, .site-footer, .back-to-top, .reading-progress,
  .post-share, .comments-section, .related-posts { display: none !important; }
  body { font-size: 12pt; color: black; }
  a { color: black; text-decoration: underline; }
  .post-content { max-width: 100%; }
}

/* ============================================================
   SKIP LINK (ACCESSIBILITY)
   ============================================================ */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  z-index: 9999;
  padding: var(--space-3) var(--space-6);
  background: var(--color-accent);
  color: white;
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: top var(--transition-fast);
}
.skip-link:focus { top: var(--space-4); }

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.animate-fade-up { animation: fadeUp 0.5s ease forwards; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   PERFORMANCE: CONTENT-VISIBILITY
   Tells the browser to skip rendering off-screen sections until
   needed — biggest Speed Index gain on long pages.
   contain-intrinsic-size prevents layout shift on first paint.
   ============================================================ */
.home-section,
.newsletter-section,
.related-posts,
.comments-section,
.author-box {
  content-visibility: auto;
  contain-intrinsic-size: 0 400px;
}

/* Site footer — always below the fold */
.site-footer {
  content-visibility: auto;
  contain-intrinsic-size: 0 320px;
}

/* ============================================================
   PERFORMANCE: RESPONSIVE IMAGES
   Explicit aspect-ratio prevents layout shift (CLS = 0).
   ============================================================ */
.post-card-thumb,
.post-card-thumb img {
  aspect-ratio: 16 / 9;
}
.post-featured-image,
.post-featured-image img {
  aspect-ratio: 16 / 8;
}
.hero-featured-img,
.hero-featured-img img {
  aspect-ratio: 16 / 9;
}
.rp-thumb {
  aspect-ratio: 1 / 1;
  width: 60px;
  height: 60px;
  object-fit: cover;
}
.author-avatar,
.comment-avatar {
  aspect-ratio: 1 / 1;
}

/* ============================================================
   PERFORMANCE: WILL-CHANGE — ONLY ON HOVER-CAPABLE DEVICES
   Prevents unnecessary GPU layer creation on mobile/touch.
   ============================================================ */
@media (hover: hover) and (pointer: fine) {
  .post-card:hover,
  .hero-featured-post:hover {
    will-change: transform;
  }
}

/* ============================================================
   PERFORMANCE: IMAGE OBJECT-FIT WITHOUT REFLOW
   Explicit width/height + object-fit on all image containers
   ensures zero Cumulative Layout Shift (CLS).
   ============================================================ */
.post-card-thumb img,
.hero-featured-img img,
.post-featured-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* ============================================================
   PERFORMANCE: MOBILE PAINT OPTIMISATION
   Simplify expensive paint ops on small screens.
   ============================================================ */
@media (max-width: 768px) {
  /* Skip backdrop-filter on mobile — expensive GPU op */
  .site-header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  /* Reduce hero padding to bring LCP image into view faster */
  .hero {
    padding: 3rem 0 2.5rem;
  }
  /* Simplify card hover — transforms cause repaints on mobile */
  .post-card:hover {
    transform: none;
    will-change: auto;
  }
}

/* ============================================================
   PERFORMANCE: CONTAIN LAYOUT SHIFTS IN SIDEBAR
   ============================================================ */
.sidebar-widget {
  contain: layout style;
}