/*
Theme Name: SPS Tech Java
Theme URI: https://sps-tech.in
Author: SPS Tech
Author URI: https://sps-tech.in
Description: A clean, modern Java learning blog with card-grid layout and SEO optimization. Built for sps-tech.in.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: sps-tech-java
Tags: blog, education, java, programming, clean, responsive
*/

/* ============================================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================================ */
:root {
  --color-primary:       #f89820;
  --color-primary-dark:  #d4800a;
  --color-primary-light: #fff8ee;
  --color-secondary:     #e74c3c;
  --color-text:          #1a1a2e;
  --color-text-muted:    #6b7280;
  --color-text-light:    #9ca3af;
  --color-bg:            #ffffff;
  --color-bg-alt:        #f8f9fa;
  --color-bg-dark:       #1a1a2e;
  --color-border:        #e9ecef;
  --color-card-bg:       #ffffff;
  --color-code-bg:       #0d1117;
  --color-success:       #10b981;
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md:   0 4px 12px rgba(0,0,0,0.10), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg:   0 10px 30px rgba(0,0,0,0.12), 0 4px 8px rgba(0,0,0,0.08);
  --shadow-card: 0 2px 8px rgba(0,0,0,0.07);
  --shadow-card-hover: 0 8px 30px rgba(248,152,32,0.15), 0 4px 12px rgba(0,0,0,0.10);
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  28px;
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --max-width: 1200px;
  --content-width: 760px;
  --transition: all 0.25s ease;
  --transition-slow: all 0.4s 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%; }

body {
  font-family: var(--font-primary);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--color-primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--color-primary-dark); }
a:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: 3px; }

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

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.container--narrow { max-width: var(--content-width); }

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.flex { display: flex; }
.flex-center { display: flex; align-items: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1,h2,h3,h4,h5,h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; }
p  { margin-bottom: 1.25rem; }

.text-muted  { color: var(--color-text-muted); }
.text-small  { font-size: 0.875rem; }
.text-xs     { font-size: 0.75rem; }
.text-center { text-align: center; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-size: 0.9375rem;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(248,152,32,0.4);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-1px);
}

.btn-sm { padding: 8px 16px; font-size: 0.875rem; border-radius: var(--radius-sm); }

/* ============================================================
   BADGES & TAGS
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.badge-primary {
  background: var(--color-primary);
  color: #fff;
}

.badge-orange-light {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 500;
  transition: var(--transition);
}
.tag:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled { box-shadow: var(--shadow-md); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  font-weight: 800;
  color: #fff;
  font-family: var(--font-mono);
  letter-spacing: -2px;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.logo-text .logo-name {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.03em;
}
.logo-text .logo-name span { color: var(--color-primary); }
.logo-text .logo-tagline {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* Navigation */
.site-nav { display: flex; align-items: center; gap: 4px; }

.nav-link {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: var(--transition);
}
.nav-link:hover, .nav-link.active {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.header-actions { display: flex; align-items: center; gap: 12px; }

/* Search toggle */
.search-toggle {
  width: 38px;
  height: 38px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: var(--transition);
}
.search-toggle:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Mobile menu button */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: transparent;
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* Mobile Nav Dropdown */
.mobile-nav {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  z-index: 999;
  padding: 16px 24px;
}
.mobile-nav.open { display: block; }
.mobile-nav a {
  display: block;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  font-weight: 500;
}
.mobile-nav a:last-child { border-bottom: none; }

/* Search overlay */
.search-overlay {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  padding: 20px 24px;
  z-index: 998;
  box-shadow: var(--shadow-md);
}
.search-overlay.open { display: flex; gap: 12px; align-items: center; max-width: var(--max-width); margin: 0 auto; }
.search-overlay input {
  flex: 1;
  padding: 12px 18px;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-size: 1rem;
  outline: none;
}
.search-overlay button {
  padding: 12px 20px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 600;
  font-family: var(--font-primary);
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  background: linear-gradient(135deg, #fff 0%, #fff8ee 50%, #fff3e0 100%);
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(248,152,32,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '</>';
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: clamp(4rem, 12vw, 10rem);
  font-weight: 800;
  color: rgba(248,152,32,0.07);
  letter-spacing: -5px;
  pointer-events: none;
  user-select: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
}

.hero-label .dot {
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.6; transform: scale(0.8); }
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: 18px;
  letter-spacing: -0.04em;
}
.hero h1 .highlight {
  color: var(--color-primary);
  position: relative;
}
.hero h1 .highlight::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-primary);
  border-radius: 2px;
  opacity: 0.3;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 560px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 48px;
  padding-top: 36px;
  border-top: 1px solid rgba(248,152,32,0.2);
}
.hero-stat-num {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.04em;
}
.hero-stat-label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 36px;
  gap: 16px;
}

.section-title-group {}

.section-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.section-title {
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.03em;
}

/* ============================================================
   POSTS SECTION (HOME)
   ============================================================ */
.posts-section { padding: 72px 0; }

/* ============================================================
   POST CARD
   ============================================================ */
.post-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition-slow);
  box-shadow: var(--shadow-card);
}
.post-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(248,152,32,0.3);
}

.post-card-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--color-bg-alt);
}
.post-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.post-card:hover .post-card-image img { transform: scale(1.05); }

.post-card-image-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, #ffe0b2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 2.5rem;
  color: var(--color-primary);
  font-weight: 800;
}

.post-card-category {
  position: absolute;
  top: 12px;
  left: 12px;
}

.post-card-body {
  padding: 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.post-card-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.35;
  margin-bottom: 10px;
  transition: var(--transition);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card:hover .post-card-title { color: var(--color-primary); }

.post-card-excerpt {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  gap: 12px;
}

.post-card-author {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.author-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.author-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.post-card-date-read {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.post-date, .read-time {
  font-size: 0.78rem;
  color: var(--color-text-light);
  font-weight: 500;
  white-space: nowrap;
}
.separator { color: var(--color-border); }

/* ============================================================
   FEATURED POST CARD (large, full-width)
   ============================================================ */
.post-card--featured {
  grid-column: 1 / -1;
  flex-direction: row;
  min-height: 280px;
}
.post-card--featured .post-card-image {
  width: 45%;
  flex-shrink: 0;
  aspect-ratio: unset;
}
.post-card--featured .post-card-body { padding: 36px 40px; }
.post-card--featured .post-card-title { font-size: 1.5rem; -webkit-line-clamp: 3; }
.post-card--featured .post-card-excerpt { -webkit-line-clamp: 4; }

/* ============================================================
   CATEGORIES / TOPICS BAR
   ============================================================ */
.topics-section {
  padding: 36px 0;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.topics-list {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}
.topics-list::-webkit-scrollbar { display: none; }

.topic-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: #fff;
  border: 1.5px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  white-space: nowrap;
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
}
.topic-chip:hover, .topic-chip.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}
.topic-chip .count {
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
  border-radius: 100px;
  padding: 2px 7px;
  font-size: 0.75rem;
  font-weight: 600;
  transition: var(--transition);
}
.topic-chip:hover .count, .topic-chip.active .count {
  background: rgba(255,255,255,0.3);
  color: #fff;
}

/* ============================================================
   PAGINATION
   ============================================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--color-border);
}

.page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition);
}
.page-link:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}
.page-link.current {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}
.page-link.dots { border-color: transparent; cursor: default; }

/* ============================================================
   SIDEBAR
   ============================================================ */
.content-with-sidebar {
  display: grid;
  grid-template-columns: 1fr 310px;
  gap: 48px;
  align-items: start;
}

.sidebar { position: sticky; top: 90px; }

.widget {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
}

.widget-title {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

/* Search widget */
.widget-search {
  display: flex;
  gap: 8px;
}
.widget-search input {
  flex: 1;
  padding: 10px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-primary);
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition);
}
.widget-search input:focus { border-color: var(--color-primary); }
.widget-search button {
  padding: 10px 14px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition);
}
.widget-search button:hover { background: var(--color-primary-dark); }

/* Category list widget */
.category-list { list-style: none; }
.category-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 0;
  border-bottom: 1px solid var(--color-border);
}
.category-list li:last-child { border-bottom: none; }
.category-list a {
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}
.category-list a:hover { color: var(--color-primary); padding-left: 4px; }
.category-count {
  background: var(--color-border);
  color: var(--color-text-muted);
  border-radius: 100px;
  padding: 2px 8px;
  font-size: 0.75rem;
  font-weight: 600;
}

/* Recent posts widget */
.recent-posts-list { list-style: none; }
.recent-post-item {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
  align-items: flex-start;
}
.recent-post-item:last-child { border-bottom: none; }
.recent-post-thumb {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--color-primary-light);
}
.recent-post-thumb img { width: 100%; height: 100%; object-fit: cover; }
.recent-post-info {}
.recent-post-title {
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: var(--color-text);
  transition: var(--transition);
}
.recent-post-title:hover { color: var(--color-primary); }
.recent-post-date { font-size: 0.75rem; color: var(--color-text-light); }

/* Tags widget */
.tags-cloud { display: flex; flex-wrap: wrap; gap: 8px; }

/* About widget */
.about-widget { text-align: center; }
.about-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 1.75rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  font-family: var(--font-mono);
}
.about-name { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.about-bio { font-size: 0.85rem; color: var(--color-text-muted); line-height: 1.6; }

/* ============================================================
   SINGLE POST
   ============================================================ */
.post-hero {
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, #16213e 100%);
  padding: 60px 0 40px;
  position: relative;
  overflow: hidden;
}
.post-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(248,152,32,0.15) 0%, transparent 60%);
}

.post-hero-inner { position: relative; z-index: 1; }

.post-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 0.8125rem;
}
.post-breadcrumb a { color: rgba(255,255,255,0.6); }
.post-breadcrumb a:hover { color: var(--color-primary); }
.post-breadcrumb .sep { color: rgba(255,255,255,0.3); }
.post-breadcrumb .current { color: rgba(255,255,255,0.9); }

.post-hero-category { margin-bottom: 16px; }

.post-hero-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
  max-width: 800px;
}

.post-meta-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.post-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.7);
}
.post-meta-item .icon { font-size: 1rem; }
.post-meta-item strong { color: #fff; font-weight: 600; }

/* Post content area */
.post-content-area { padding: 60px 0; }

.post-featured-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 48px;
  box-shadow: var(--shadow-lg);
}
.post-featured-image img { width: 100%; height: auto; max-height: 480px; object-fit: cover; }

/* Entry content styles */
.entry-content {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-text);
}
.entry-content > * + * { margin-top: 1.5rem; }
.entry-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-border);
}
.entry-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}
.entry-content h4 { font-size: 1.1rem; font-weight: 600; margin-top: 1.5rem; }
.entry-content ul, .entry-content ol { padding-left: 1.75rem; }
.entry-content li { margin-bottom: 0.5rem; line-height: 1.7; }
.entry-content blockquote {
  border-left: 4px solid var(--color-primary);
  background: var(--color-primary-light);
  padding: 20px 24px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-text);
  font-style: italic;
}
.entry-content a { color: var(--color-primary); text-decoration: underline; text-decoration-color: rgba(248,152,32,0.3); }
.entry-content a:hover { text-decoration-color: var(--color-primary); }
.entry-content strong { color: var(--color-text); font-weight: 700; }
.entry-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9375rem;
}
.entry-content th {
  background: var(--color-bg-alt);
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid var(--color-border);
}
.entry-content td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--color-border);
}
.entry-content tr:hover td { background: var(--color-primary-light); }
.entry-content hr { border: none; border-top: 2px solid var(--color-border); margin: 2.5rem 0; }
.entry-content img { border-radius: var(--radius-md); max-width: 100%; margin: 1rem auto; }

/* Inline code */
.entry-content code:not(pre code) {
  background: #f0f0f0;
  padding: 2px 7px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.875em;
  color: #e74c3c;
  border: 1px solid #e0e0e0;
}

/* Code blocks */
.entry-content pre {
  background: var(--color-code-bg);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  overflow-x: auto;
  margin: 1.75rem 0;
  border-left: 4px solid var(--color-primary);
  position: relative;
}
.entry-content pre code {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.65;
  color: #e6edf3;
  background: transparent;
  border: none;
  padding: 0;
}

/* Code block lang label */
.entry-content pre[class*="language-"]::before {
  content: attr(data-lang);
  position: absolute;
  top: 10px;
  right: 14px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  background: rgba(248,152,32,0.15);
  padding: 3px 8px;
  border-radius: 4px;
}

/* Post footer */
.post-tags { margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--color-border); }
.post-tags-label { font-size: 0.8125rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-text-muted); margin-bottom: 12px; }
.post-tags-list { display: flex; flex-wrap: wrap; gap: 8px; }

/* Author box */
.author-box {
  background: linear-gradient(135deg, var(--color-primary-light), #fff);
  border: 1px solid rgba(248,152,32,0.2);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  display: flex;
  gap: 24px;
  margin: 48px 0 0;
  align-items: flex-start;
}
.author-box-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 1.75rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-family: var(--font-mono);
}
.author-box-name { font-size: 1.0625rem; font-weight: 700; margin-bottom: 6px; }
.author-box-bio { font-size: 0.9rem; color: var(--color-text-muted); line-height: 1.6; }

/* Related posts */
.related-posts { padding: 56px 0; border-top: 1px solid var(--color-border); }

/* Post navigation */
.post-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--color-border);
}
.post-nav-item {
  padding: 20px 24px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.post-nav-item:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}
.post-nav-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}
.post-nav-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-nav-item:hover .post-nav-title { color: var(--color-primary); }

/* ============================================================
   ARCHIVE PAGE
   ============================================================ */
.archive-header {
  background: var(--color-bg-alt);
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--color-border);
}
.archive-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: 8px;
}
.archive-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
}
.archive-description {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-top: 12px;
  max-width: 600px;
}

/* ============================================================
   SEARCH PAGE
   ============================================================ */
.search-header {
  background: var(--color-bg-alt);
  padding: 48px 0;
  border-bottom: 1px solid var(--color-border);
}
.search-form-large {
  display: flex;
  gap: 12px;
  max-width: 560px;
  margin-top: 20px;
}
.search-form-large input {
  flex: 1;
  padding: 14px 20px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-size: 1rem;
  outline: none;
  transition: var(--transition);
}
.search-form-large input:focus { border-color: var(--color-primary); }
.search-form-large button {
  padding: 14px 24px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}

/* ============================================================
   404 PAGE
   ============================================================ */
.error-404 {
  padding: 100px 0;
  text-align: center;
}
.error-code {
  font-size: clamp(5rem, 15vw, 10rem);
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: -0.08em;
  line-height: 1;
  font-family: var(--font-mono);
  margin-bottom: 8px;
}
.error-title { font-size: 1.75rem; font-weight: 700; margin-bottom: 16px; }
.error-desc { font-size: 1.0625rem; color: var(--color-text-muted); margin-bottom: 36px; max-width: 440px; margin-left: auto; margin-right: auto; }

/* ============================================================
   COMMENTS
   ============================================================ */
.comments-section {
  margin-top: 48px;
  padding-top: 48px;
  border-top: 1px solid var(--color-border);
}
.comment-respond { margin-top: 32px; }
.comment-form label { display: block; font-size: 0.875rem; font-weight: 600; margin-bottom: 6px; }
.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-primary);
  font-size: 0.9375rem;
  outline: none;
  transition: var(--transition);
  margin-bottom: 16px;
}
.comment-form input:focus, .comment-form textarea:focus { border-color: var(--color-primary); }
.comment-form textarea { resize: vertical; min-height: 140px; }
.comment-form .submit input[type="submit"] {
  padding: 12px 28px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.comment-form .submit input[type="submit"]:hover { background: var(--color-primary-dark); }

/* Comment list */
.comment-list { list-style: none; }
.comment { margin-bottom: 28px; }
.comment-body {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}
.comment-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.comment-author-name { font-weight: 700; font-size: 0.9375rem; }
.comment-date { font-size: 0.8rem; color: var(--color-text-light); }
.comment-content p { font-size: 0.9375rem; line-height: 1.7; color: var(--color-text-muted); }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-bg-dark);
  color: rgba(255,255,255,0.8);
  margin-top: auto;
}

.footer-main { padding: 64px 0 48px; }

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand {}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  text-decoration: none;
}
.footer-logo .logo-icon { background: var(--color-primary); }
.footer-logo .logo-name { color: #fff; }
.footer-logo .logo-name span { color: var(--color-primary); }
.footer-logo .logo-tagline { color: rgba(255,255,255,0.5); }

.footer-desc {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
  margin-bottom: 24px;
}

.footer-social { display: flex; gap: 10px; }
.social-link {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: var(--transition);
}
.social-link:hover {
  border-color: var(--color-primary);
  background: rgba(248,152,32,0.15);
  color: var(--color-primary);
}

.footer-col-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.4);
  margin-bottom: 20px;
}

.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: var(--transition);
}
.footer-links a:hover { color: var(--color-primary); padding-left: 4px; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.footer-copy { font-size: 0.85rem; color: rgba(255,255,255,0.4); }
.footer-copy a { color: var(--color-primary); }
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { font-size: 0.82rem; color: rgba(255,255,255,0.4); }
.footer-bottom-links a:hover { color: rgba(255,255,255,0.8); }

/* ============================================================
   SCROLL TO TOP
   ============================================================ */
.scroll-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  opacity: 0;
  visibility: hidden;
  z-index: 990;
}
.scroll-top.visible { opacity: 1; visibility: visible; }
.scroll-top:hover { background: var(--color-primary-dark); transform: translateY(-3px); }

/* ============================================================
   READING PROGRESS BAR
   ============================================================ */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--color-primary);
  z-index: 9999;
  transition: width 0.1s linear;
}

/* ============================================================
   JAVA VERSION BADGE (optional, for tagging Java version)
   ============================================================ */
.java-version {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  background: #0d1117;
  color: #f89820;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid rgba(248,152,32,0.3);
}

/* ============================================================
   UTILITIES
   ============================================================ */
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.hidden { display: none !important; }
.mt-0 { margin-top: 0 !important; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .content-with-sidebar { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}

@media (max-width: 900px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .post-card--featured { flex-direction: column; }
  .post-card--featured .post-card-image { width: 100%; aspect-ratio: 16/9; }
  .post-card--featured .post-card-body { padding: 24px; }
  .post-navigation { grid-template-columns: 1fr; }
  .hero::after { display: none; }
}

@media (max-width: 768px) {
  .site-nav, .header-actions .btn { display: none; }
  .menu-toggle { display: flex; }
  .hero { padding: 56px 0 40px; }
  .hero-stats { gap: 20px; flex-wrap: wrap; }
  .posts-section { padding: 48px 0; }
  .section-header { flex-direction: column; align-items: flex-start; }
  .post-meta-bar { gap: 12px; }
  .author-box { flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 600px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2rem; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .search-overlay.open { flex-direction: column; }
  .container { padding: 0 16px; }
}