/* Enhanced Blog Styles with Animations and Modern UI */

/* CSS Variables for consistent theming */
:root {
  --primary-color: #0366d6;
  --secondary-color: #28a745;
  --accent-color: #6f42c1;
  --warning-color: #fd7e14;
  --danger-color: #dc3545;
  --dark-color: #1e1e1e;
  --light-color: #f8f9fa;
  --border-color: #e1e4e8;
  --text-color: #24292e;
  --text-muted: #6a737d;
  --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.15);
  --shadow-heavy: 0 8px 32px rgba(0, 0, 0, 0.2);
  --border-radius: 8px;
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
}

html[data-theme="light"],
body[data-theme="light"] {
  --primary-color: #0366d6;
  --secondary-color: #28a745;
  --accent-color: #6f42c1;
  --warning-color: #fd7e14;
  --danger-color: #dc3545;
  --dark-color: #1e1e1e;
  --light-color: #f8f9fa;
  --border-color: #e1e4e8;
  --text-color: #24292e;
  --text-muted: #6a737d;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --primary-color: #79b8ff;
    --secondary-color: #34d058;
    --accent-color: #b392f0;
    --dark-color: #161b22;
    --light-color: #0d1117;
    --border-color: #30363d;
    --text-color: #f0f6fc;
    --text-muted: #8b949e;
  }
}

body.dark-mode,
html[data-theme="dark"],
body[data-theme="dark"] {
  --primary-color: #79b8ff;
  --secondary-color: #34d058;
  --accent-color: #b392f0;
  --dark-color: #161b22;
  --light-color: #0d1117;
  --border-color: #30363d;
  --text-color: #f0f6fc;
  --text-muted: #8b949e;
}

/* Base animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes bounce {
  0%, 20%, 53%, 80%, 100% {
    transform: translateY(0);
  }
  40%, 43% {
    transform: translateY(-8px);
  }
  70% {
    transform: translateY(-4px);
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(100%);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Enhanced Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
  color: white;
  padding: 4rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  animation: shimmer 3s infinite linear;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero h2 {
  font-size: 3rem;
  margin-bottom: 1rem;
  animation: fadeInUp 0.8s ease;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
  font-size: 1.2rem;
  opacity: 0.9;
  animation: fadeInUp 0.8s ease 0.2s both;
  max-width: 600px;
  margin: 0 auto;
}

/* Enhanced Language Cards */
.languages-list {
  padding: 3rem 0;
  background: var(--light-color);
}

.languages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.2rem;
  margin-top: 2rem;
  perspective: 1200px;
}

.language-card {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 24px;
  padding: 2rem;
  box-shadow: 0 10px 30px rgba(2, 6, 23, 0.06);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.6s ease both;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  background-image:
    radial-gradient(1000px 420px at 15% 0%, rgba(3, 102, 214, 0.08), transparent 60%),
    radial-gradient(900px 380px at 95% 10%, rgba(111, 66, 193, 0.07), transparent 55%);
  transform-style: preserve-3d;
  will-change: transform;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.language-card:nth-child(odd) {
  animation-delay: 0.1s;
}

.language-card:nth-child(even) {
  animation-delay: 0.2s;
}

.language-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  transform: scaleX(0);
  transition: transform var(--transition-medium);
}

.language-card::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 26px;
  background: radial-gradient(600px 260px at 50% 0%, rgba(255, 255, 255, 0.85), transparent 60%);
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.language-card:hover::before {
  transform: scaleX(1);
}

.language-card:hover {
  transform: translateY(-10px) rotateX(3deg) rotateY(-2deg);
  box-shadow: 0 18px 60px rgba(2, 6, 23, 0.14);
  border-color: rgba(3, 102, 214, 0.28);
}

.language-card:hover::after {
  opacity: 1;
}

.language-card:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px rgba(3, 102, 214, 0.20), 0 18px 60px rgba(2, 6, 23, 0.14);
  border-color: rgba(3, 102, 214, 0.34);
}

.language-header {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
}

.language-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  margin-right: 1rem;
  font-size: 1.4rem;
  animation: none;
}

.language-name {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-color);
  margin: 0;
}

.language-description {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.language-stats {
  display: flex;
  justify-content: flex-start;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 1.35rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.language-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: auto;
}

.btn-language {
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.language-card .language-stats span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  background: rgba(15, 23, 42, 0.03);
}

.language-card .language-stats i {
  opacity: 0.9;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

.language-card.reveal.reveal--visible:hover {
  transform: translateY(-10px) rotateX(3deg) rotateY(-2deg);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    transition: none;
  }
  .language-card,
  .topic-card,
  .post-card,
  .btn-language {
    transition: none !important;
    animation: none !important;
  }
}

[data-theme="dark"] .language-card {
  background: rgba(15, 23, 42, 0.78);
  border-color: rgba(148, 163, 184, 0.18);
  background-image:
    radial-gradient(900px 380px at 15% 0%, rgba(59, 130, 246, 0.18), transparent 60%),
    radial-gradient(820px 340px at 95% 10%, rgba(167, 139, 250, 0.16), transparent 55%);
}

[data-theme="dark"] .language-card .language-stats span {
  border-color: rgba(148, 163, 184, 0.22);
  background: rgba(148, 163, 184, 0.10);
}

.btn-language::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-language:hover::before {
  width: 300px;
  height: 300px;
}

.btn-language:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn-language i {
  transition: transform 0.2s ease, opacity 0.2s ease;
  opacity: 0.95;
}

.language-card:hover .btn-language i {
  transform: translateX(3px);
  opacity: 1;
}

body.blog-page .language-card {
  padding: 0;
  border-radius: 18px;
  box-shadow: 0 14px 30px rgba(2, 6, 23, 0.10);
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(15, 23, 42, 0.08);
  background-image: none;
  transform: none;
  transform-style: flat;
  will-change: auto;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

body.blog-page .language-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(2, 6, 23, 0.16);
  border-color: rgba(3, 102, 214, 0.26);
}

body.blog-page .language-card::before,
body.blog-page .language-card::after {
  display: none;
}

body.blog-page .language-banner {
  height: 190px;
  margin: 0;
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  background-size: cover, auto, auto;
  background-position: center, center, center;
  background-repeat: no-repeat;
  transform: none;
  position: relative;
  overflow: hidden;
  background-color: #3b3f49;
  background-image:
    var(--banner-url, none),
    radial-gradient(1200px 420px at 20% 0%, rgba(255, 255, 255, 0.10), transparent 55%),
    radial-gradient(900px 360px at 90% 20%, rgba(255, 255, 255, 0.08), transparent 55%);
}

body.blog-page .language-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.22) 1px, transparent 1px);
  background-size: 18px 18px;
  opacity: 0.22;
  pointer-events: none;
}

body.blog-page .language-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.10), rgba(15, 23, 42, 0.62));
  pointer-events: none;
}

body.blog-page .language-banner-icon {
  position: absolute;
  right: 14px;
  top: 14px;
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.22);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

body.blog-page .language-banner-icon i {
  color: rgba(255, 255, 255, 0.95);
  font-size: 1.4rem;
  text-shadow: 0 10px 24px rgba(2, 6, 23, 0.35);
}

body.blog-page .language-body {
  padding: 16px 18px 18px 18px;
}

body.blog-page .language-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

body.blog-page .language-time {
  color: #94a3b8;
  font-weight: 650;
  font-size: 0.95rem;
}

body.blog-page .language-dots {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: transparent;
  border: none;
  color: #94a3b8;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

body.blog-page .language-name {
  font-size: 1.18rem;
  font-weight: 770;
  letter-spacing: -0.01em;
  margin: 0 0 10px 0;
  color: #0f172a;
  line-height: 1.25;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

body.blog-page .language-description {
  margin: 0 0 14px 0;
  color: #64748b;
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

body.blog-page .language-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: #94a3b8;
  font-size: 0.93rem;
  padding-top: 12px;
  border-top: 1px solid rgba(15, 23, 42, 0.06);
}

body.blog-page .language-footer-right {
  color: #0f172a;
  font-weight: 650;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

body.blog-page .language-footer-right i {
  opacity: 0.9;
}

body.blog-page[data-theme="dark"] .language-card,
html[data-theme="dark"] body.blog-page .language-card {
  background: rgba(15, 23, 42, 0.88);
  border-color: rgba(148, 163, 184, 0.18);
}

body.blog-page[data-theme="dark"] .language-time,
html[data-theme="dark"] body.blog-page .language-time,
body.blog-page[data-theme="dark"] .language-dots,
html[data-theme="dark"] body.blog-page .language-dots {
  color: rgba(226, 232, 240, 0.82);
}

body.blog-page[data-theme="dark"] .language-name,
html[data-theme="dark"] body.blog-page .language-name {
  color: rgba(226, 232, 240, 0.96);
}

body.blog-page[data-theme="dark"] .language-description,
html[data-theme="dark"] body.blog-page .language-description,
body.blog-page[data-theme="dark"] .language-footer,
html[data-theme="dark"] body.blog-page .language-footer {
  color: rgba(226, 232, 240, 0.68);
  border-top-color: rgba(148, 163, 184, 0.18);
}

body.blog-page[data-theme="dark"] .language-footer-right,
html[data-theme="dark"] body.blog-page .language-footer-right {
  color: rgba(226, 232, 240, 0.96);
}

/* Enhanced Topics Section */
.topics-section {
  padding: 3rem 0;
  background: white;
}

.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.topic-card {
  background: var(--light-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  transition: all var(--transition-medium);
  position: relative;
  animation: fadeInLeft 0.6s ease both;
}

.topic-card:nth-child(2n) {
  animation-name: fadeInRight;
}

.topic-card:hover {
  border-color: var(--primary-color);
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
}

.topic-header {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
}

.topic-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin-right: 1rem;
  font-size: 1.2rem;
  animation: bounce 2s infinite;
}

.topic-name {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-color);
  margin: 0;
}

.topic-description {
  color: var(--text-muted);
  margin-bottom: 1rem;
  line-height: 1.5;
}

.topic-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.topic-subline {
  color: var(--text-muted);
  margin: 0.25rem 0 0.75rem 0;
  font-size: 0.95rem;
}
.topics-grid {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
}
@media (max-width: 1200px) {
  .topics-grid {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  }
}
@media (max-width: 768px) {
  .topics-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}
.topic-card {
  border: 1px solid var(--border-color);
  border-radius: 16px;
  background: #fff;
  padding: 1rem;
  display: block;
  position: relative;
  box-shadow: var(--shadow-light);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium), border-color var(--transition-fast), background var(--transition-fast);
  background-image: radial-gradient(1200px 600px at 10% 0%, rgba(3,102,214,.06), transparent), radial-gradient(1200px 600px at 90% 0%, rgba(111,66,193,.06), transparent);
}
.topic-card .topic-header {
  gap: 10px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  margin-bottom: .25rem;
}
.topic-card .topic-name {
  font-size: 1.2rem;
  font-weight: 700;
}
.topic-card .topic-description {
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.8em;
}
.topic-card:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: var(--shadow-heavy);
  border-color: var(--primary-color);
}
.topic-card:active {
  transform: translateY(-2px) scale(.997);
}
.topic-card:focus,
.topic-card:focus-visible {
  outline: 3px solid rgba(3,102,214,.25);
  outline-offset: 3px;
}
.topic-card::before {
  content: '';
  position: absolute;
  inset: 0;
  padding: 2px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.topic-card:hover::before {
  opacity: .6;
}
.featured-grid .topic-name {
  font-size: 1.2rem;
}
.featured-grid .topic-icon {
  animation: none;
}
.topic-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(3,102,214,.25);
}
.topic-meta {
  gap: 12px;
  flex-wrap: wrap;
}
@media (max-width: 640px) {
  .topic-card {
    padding: .9rem;
    border-radius: 14px;
  }
  .topic-card .topic-name {
    font-size: 1.1rem;
  }
  .topic-icon {
    width: 40px;
    height: 40px;
  }
}

/* Enhanced Posts Section */
.posts-section {
  padding: 3rem 0;
  background: var(--light-color);
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.post-card {
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
  overflow: hidden;
  transition: all var(--transition-medium);
  animation: fadeInUp 0.6s ease both;
}

.post-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-heavy);
}

.post-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.post-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-color);
  margin: 0 0 0.5rem 0;
  line-height: 1.4;
}

.post-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.post-content {
  padding: 1.5rem;
  color: var(--text-color);
  line-height: 1.6;
  box-sizing: border-box;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
  color: var(--primary-color);
  margin-top: 1.5rem;
  margin-bottom: 1rem;
}

.post-content pre {
  background: var(--dark-color);
  color: #e1e4e8;
  padding: 1rem;
  border-radius: var(--border-radius);
  overflow-x: auto;
  max-width: 100%;
  margin: 1rem 0;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.9rem;
  line-height: 1.4;
}

.post-content code {
  background: var(--light-color);
  color: var(--primary-color);
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.9em;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.post-content pre code {
  background: none;
  color: inherit;
  padding: 0;
}

.post-footer {
  padding: 1rem 1.5rem;
  background: var(--light-color);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.btn-read-more {
  background: var(--primary-color);
  color: white;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.btn-read-more:hover {
  background: #0256cc;
  transform: translateY(-1px);
}

/* Enhanced Admin Panel */
.admin-panel {
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
  padding: 2rem;
  margin: 2rem 0;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--border-color);
}

.admin-title {
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-color);
  margin: 0;
}

.admin-actions {
  display: flex;
  gap: 1rem;
}

.btn-admin {
  background: var(--secondary-color);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 500;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-admin:hover {
  background: #218838;
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

/* Enhanced Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-color);
}

.form-control {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 1rem;
  transition: all var(--transition-fast);
  background: white;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(3, 102, 214, 0.1);
}

.form-control.error {
  border-color: var(--danger-color);
}

.form-textarea {
  min-height: 200px;
  resize: vertical;
  font-family: inherit;
}

/* Enhanced Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

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

.btn-primary:hover {
  background: #0256cc;
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn-secondary {
  background: var(--text-muted);
  color: white;
}

.btn-secondary:hover {
  background: #5a6268;
  transform: translateY(-2px);
}

.btn-success {
  background: var(--secondary-color);
  color: white;
}

.btn-success:hover {
  background: #218838;
  transform: translateY(-2px);
}

.btn-danger {
  background: var(--danger-color);
  color: white;
}

.btn-danger:hover {
  background: #c82333;
  transform: translateY(-2px);
}

/* Enhanced Tables */
.table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-light);
}

.table th,
.table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.table th {
  background: var(--light-color);
  font-weight: 600;
  color: var(--text-color);
  position: sticky;
  top: 0;
}

.table tbody tr {
  transition: background var(--transition-fast);
}

.table tbody tr:hover {
  background: rgba(3, 102, 214, 0.05);
}

/* Enhanced Alerts */
.alert {
  padding: 1rem 1.5rem;
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
  border: none;
  position: relative;
  animation: slideInUp 0.3s ease;
}

.alert-success {
  background: #d4edda;
  color: #155724;
  border-left: 4px solid var(--secondary-color);
}

.alert-danger {
  background: #f8d7da;
  color: #721c24;
  border-left: 4px solid var(--danger-color);
}

.alert-warning {
  background: #fff3cd;
  color: #856404;
  border-left: 4px solid var(--warning-color);
}

.alert-info {
  background: #d1ecf1;
  color: #0c5460;
  border-left: 4px solid var(--primary-color);
}

/* Enhanced Search and Filters */
.search-container {
  background: white;
  border-radius: var(--border-radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-light);
  margin-bottom: 2rem;
}

.search-form {
  display: flex;
  gap: 1rem;
  align-items: end;
  flex-wrap: wrap;
}

.search-input {
  flex: 1;
  min-width: 200px;
}

.search-select {
  min-width: 150px;
}

/* Enhanced Loading States */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: shimmer 1.5s infinite;
}

/* Enhanced Responsive Design */
@media (max-width: 768px) {
  .hero h2 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .languages-grid,
  .topics-grid,
  .posts-grid {
    grid-template-columns: 1fr;
  }
  
  .admin-header {
    flex-direction: column;
    gap: 1rem;
    align-items: stretch;
  }
  
  .admin-actions {
    justify-content: center;
  }
  
  .search-form {
    flex-direction: column;
  }
  
  .search-input,
  .search-select {
    width: 100%;
  }
}

/* Enhanced Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus styles for better accessibility */
.btn:focus,
.form-control:focus,
.btn-language:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --border-color: #000;
    --text-color: #000;
    --primary-color: #0066cc;
  }
  
  body.dark-mode {
    --border-color: #fff;
    --text-color: #fff;
    --primary-color: #66b3ff;
  }
}

/* Advanced Programmer-Focused Reading Enhancements */

/* Enhanced Code Reading Experience */
.post-content {
  font-family: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-color);
  background: var(--bg-card);
  padding: 2.5rem;
  border-radius: var(--border-radius);
  margin: 1.5rem 0;
  box-shadow: none;
  border: 1px solid var(--border-color);
}

/* Advanced Code Block Styling */
.post-content pre {
  background: var(--code-bg);
  color: #f8f8f2;
  padding: 1.5rem;
  border-radius: 12px;
  overflow-x: auto;
  margin: 2rem 0;
  font-family: 'JetBrains Mono', 'Fira Code', 'Monaco', 'Menlo', monospace;
  font-size: 0.95rem;
  line-height: 1.6;
  position: relative;
  border: 1px solid var(--border-color);
  box-shadow: none;
}

.post-content pre::before {
  content: attr(data-language);
  position: absolute;
  top: 0.5rem;
  right: 1rem;
  background: var(--primary-color);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Fallback for pre elements without data-language attribute */
.post-content pre:not([data-language])::before {
  content: 'CODE';
}

/* Enhanced Inline Code */
.post-content code {
  background: var(--border-color);
  color: var(--primary-color);
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.9em;
  font-weight: 500;
  border: 1px solid var(--border-color);
  box-shadow: none;
}

/* Advanced Typography for Technical Content */
.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
  color: var(--primary-color);
  margin: 2.5rem 0 1.5rem 0;
  font-weight: 700;
  line-height: 1.3;
  position: relative;
}

.post-content h1 {
  font-size: 2.5rem;
  border-bottom: 3px solid var(--primary-color);
  padding-bottom: 0.5rem;
}

.post-content h2 {
  font-size: 2rem;
  border-left: 4px solid var(--primary-color);
  padding-left: 1rem;
}

.post-content h3 {
  font-size: 1.5rem;
  color: var(--accent-color);
}

/* Enhanced Lists for Technical Content */
.post-content ul,
.post-content ol {
  margin: 1.5rem 0;
  padding-left: 2rem;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.post-content li {
  margin: 0.75rem 0;
  line-height: 1.7;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.post-content li::marker {
  color: var(--primary-color);
  font-weight: bold;
}

/* Advanced Blockquotes */
.post-content blockquote {
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border-left: 4px solid var(--primary-color);
  padding: 1.5rem 2rem;
  margin: 2rem 0;
  border-radius: 0 8px 8px 0;
  font-style: italic;
  position: relative;
  box-shadow: var(--shadow-light);
}

.post-content blockquote::before {
  content: '"';
  font-size: 4rem;
  color: var(--primary-color);
  position: absolute;
  left: 1rem;
  top: -0.5rem;
  opacity: 0.3;
}

/* Enhanced Tables for Technical Data */
.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  background: var(--bg-card);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: none;
}

.post-content th {
  background: var(--table-head-bg);
  color: var(--text-color);
  padding: 1rem;
  text-align: left;
  font-weight: 700;
}

.post-content td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.post-content tr:hover {
  background: var(--table-row-hover);
}

.table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 0.5rem;
}
.table-responsive table {
  margin: 0;
  border: none;
  box-shadow: none;
  border-radius: 8px;
}

/* Advanced Reading Controls for Programmers */
.reading-controls {
  background: linear-gradient(135deg, var(--bg-glass) 0%, var(--light-color) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 16px;
  padding: 1rem 1.5rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
  margin: 2rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  position: sticky;
  top: 20px;
  z-index: 100;
  transition: all 0.3s ease;
}

.reading-controls:hover {
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.15);
}

/* Enhanced Copy Button for Code Blocks */
.copy-btn {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  opacity: 0;
  transform: translateY(-5px);
}

.post-content pre:hover .copy-btn {
  opacity: 1;
  transform: translateY(0);
}

.copy-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.copy-btn.copied {
  background: var(--secondary-color);
}

/* Enhanced Post Card for Better Reading */
.post-card {
  background: var(--bg-card);
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
  padding: 3rem;
  margin: 2rem 0;
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.post-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
}

.post-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.12);
}

/* Advanced Syntax Highlighting Enhancements */
.token.comment {
  color: #6a737d;
  font-style: italic;
}

.token.keyword {
  color: #d73a49;
  font-weight: 600;
}

.token.string {
  color: #032f62;
}

.token.number {
  color: #005cc5;
}

.token.function {
  color: #6f42c1;
}

/* Responsive Design for Programmers */
@media (max-width: 768px) {
  .post-content {
    padding: 1.5rem;
    font-size: 1rem;
  }
  
  .post-content pre {
    padding: 1rem;
    font-size: 0.85rem;
  }
  
  .reading-controls {
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem;
  }
  
  .post-card {
    padding: 2rem;
    margin: 1rem 0;
  }
}

/* Dark Mode Specific Enhancements */
[data-theme="dark"] .post-content code {
  background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
  color: #90cdf4;
  border-color: #4a5568;
}

[data-theme="dark"] .post-content pre {
  background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
  border-color: #4a5568;
}

/* Try Editor Output Panel */
.try-output-header { background: var(--bg-card); }
.try-output-tabs { background: var(--bg-card); }
.try-output-tabs .output-tab-btn { background: #fff; color: var(--text-color); border: 1px solid var(--border-color); border-radius: 8px; }
.try-output-tabs .output-tab-btn.active { background: var(--primary-color); color: #fff; border-color: var(--primary-color); }
.try-output-body { background: var(--bg-card); }
.tab { display: none; }
.tab.active { display: block; }
.tab .tab-pre { font-family: ui-monospace, Menlo, Monaco, Consolas, "Courier New", monospace; font-size: 0.95rem; line-height: 1.5; }
.tab-stdout .tab-pre { color: var(--text-color); }
.tab-stderr .tab-pre { color: #b00020; }
.tab-compile .tab-pre { color: #b07000; }
.try-output-body .tab-pre { background: #fff !important; color: #000 !important; border: 1px solid var(--border-color); border-radius: 8px; overflow: auto; white-space: pre-wrap; word-break: break-word; margin: 0; padding: 10px; }

/* Advanced Responsive Design for Programmers */

/* Ultra-wide screens - Enhanced reading experience */
@media (min-width: 1400px) {
  .post-content {
    max-width: 900px;
    margin: 0 auto;
    font-size: 1.2rem;
    line-height: 1.9;
  }
  
  .post-content pre {
    font-size: 1rem;
    padding: 2rem;
  }
  
  .reading-controls {
    max-width: 900px;
    margin: 2rem auto;
  }
}

/* Desktop optimization */
@media (min-width: 1024px) and (max-width: 1399px) {
  .post-content { max-width: 800px; margin: 0 auto; }
  .post-card { padding: 3.5rem; }
  .post-card.has-toc { grid-template-columns: 280px 1fr; gap: 24px; }
}

/* Tablet optimization */
@media (min-width: 768px) and (max-width: 1023px) {
  .post-content {
    padding: 2rem;
    font-size: 1.05rem;
  }
  
  .post-content pre {
    font-size: 0.9rem;
    padding: 1.25rem;
  }
  
  .reading-controls {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 1rem;
  }
  
  .post-card {
    padding: 2.5rem;
    margin: 1.5rem 0;
  }
}

/* Mobile optimization */
@media (max-width: 767px) {
  /* Enhanced mobile reading experience */
  .post-content {
    padding: 1.5rem;
    font-size: 1rem;
    line-height: 1.7;
  }
  
  .post-content h1 {
    font-size: 1.8rem;
  }
  
  .post-content h2 {
    font-size: 1.5rem;
  }
  
  .post-content h3 {
    font-size: 1.3rem;
  }
  
  .post-content pre {
    font-size: 0.8rem;
    padding: 1rem;
    margin: 1.5rem -1.5rem;
    border-radius: 0;
    border-left: none;
    border-right: none;
  }
}

/* Blog Topic: sticky header ensure + body offset */
.blog-topic-page .header { position: fixed; top: 0; left: 0; right: 0; z-index: 2000; }
body.blog-topic-page { padding-top: 80px; }

/* Scroll progress bar */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  z-index: 2500;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}

/* Post TOC and two-column layout when available */
.post-card.has-toc {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 24px;
  align-items: start;
  grid-auto-rows: minmax(0, auto);
}
.post-card.has-toc > .post-toc,
.post-card.has-toc > .post-content {
  min-width: 0; /* prevent overflow into adjacent grid column */
}
.post-card.has-toc .post-toc {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: var(--shadow-soft);
  padding: 12px 14px;
  position: sticky;
  top: 96px;
  max-height: calc(100vh - 120px);
  overflow: auto;
  z-index: 1;
}
.post-card.has-toc .post-content { position: relative; z-index: 0; }
.post-card.has-toc .post-toc h5 {
  margin: 0 0 8px 0;
  font-size: 0.95rem;
  color: var(--text-main);
}
.post-card.has-toc .post-toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.post-card.has-toc .post-toc li {
  margin: 6px 0;
}
.post-card.has-toc .post-toc a {
  display: inline-block;
  color: var(--text-main);
  text-decoration: none;
  border-radius: 8px;
  padding: 6px 8px;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
  hyphens: auto;
  max-width: 100%;
}
.post-card.has-toc .post-toc a:hover {
  background: rgba(99,102,241,0.10);
  color: var(--primary-color);
}
/* Ensure long headings don’t overflow/overlap */
.post-content h1, .post-content h2, .post-content h3 {
  word-break: break-word;
  overflow-wrap: anywhere;
}
@media (max-width: 992px) {
  .post-card.has-toc { display: block; }
  .post-card.has-toc .post-toc {
    position: relative;
    top: auto;
    max-height: none;
    margin-bottom: 16px;
  }
}
  .post-content pre::before {
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
  }
  
  .post-content code {
    font-size: 0.85em;
    padding: 0.2rem 0.4rem;
  }
  
  .reading-controls {
    flex-direction: column;
    gap: 0.75rem;
    padding: 1rem;
    border-radius: 12px;
    position: relative;
    top: 0;
    margin: 1rem 0;
  }
  
  .reading-controls .btn {
    width: 100%;
    border-radius: 8px;
    padding: 0.75rem;
    justify-content: center;
  }
  
  .post-card {
    padding: 1.5rem;
    margin: 1rem 0;
    border-radius: 12px;
  }
  
  .post-card::before {
    height: 3px;
  }
  
  /* Enhanced mobile tables */
  .post-content table {
    font-size: 0.9rem;
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
  
  .post-content th,
  .post-content td {
    padding: 0.75rem;
  }
  
  /* Mobile-specific copy button */
  .copy-btn {
    font-size: 0.75rem;
    padding: 0.4rem 0.8rem;
    opacity: 1;
    transform: none;
  }
  
  /* Enhanced mobile lists */
  .post-content ul,
  .post-content ol {
    padding-left: 1.5rem;
  }
  
  .post-content li {
    margin: 0.5rem 0;
  }
@media (max-width: 480px) {
  .post-content {
    padding: 1rem;
    font-size: 0.95rem;
  }
  
  .post-content pre {
    font-size: 0.75rem;
    margin: 1rem -1rem;
  }
  
  .post-card {
    padding: 1rem;
  }
  
  .reading-controls {
    padding: 0.75rem;
    gap: 0.5rem;
  }
  
  .reading-controls .btn {
    padding: 0.6rem;
    font-size: 0.9rem;
  }
}

/* Small mobile devices */
@media (max-width: 480px) {
  .post-content {
    padding: 1rem;
    font-size: 0.95rem;
  }
  
  .post-content pre {
    font-size: 0.75rem;
    margin: 1rem -1rem;
  }
  
  .post-card {
    padding: 1rem;
  }
  
  .reading-controls {
    padding: 0.75rem;
    gap: 0.5rem;
  }
  
  .reading-controls .btn {
    padding: 0.6rem;
    font-size: 0.9rem;
  }
}

/* Landscape mobile optimization */
@media (max-width: 767px) and (orientation: landscape) {
  .post-content pre {
    font-size: 0.85rem;
    max-height: 300px;
    overflow-y: auto;
  }
  
  .reading-controls {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.5rem;
  }
}

/* Touch-friendly enhancements */
@media (hover: none) and (pointer: coarse) {
  .copy-btn {
    opacity: 1;
    transform: none;
    padding: 0.6rem 1rem;
    font-size: 0.85rem;
  }
  
  .reading-controls .btn {
    min-height: 44px;
    touch-action: manipulation;
  }
  
  .post-content pre {
    -webkit-overflow-scrolling: touch;
  }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .post-content {
    font-weight: 400;
  }
  
  .post-content code {
    font-weight: 500;
  }
  
  .post-content pre {
    font-weight: 450;
  }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  .post-card,
  .reading-controls,
  .copy-btn {
    transition: none;
  }
  
  .post-card:hover {
    transform: none;
  }
}

/* Enhanced Line Numbers for Code Blocks */
.post-content pre.line-numbers {
  position: relative;
  padding-left: 3.5rem;
  counter-reset: line;
}

.post-content pre.line-numbers .line-numbers-rows {
  position: absolute;
  pointer-events: none;
  top: 0;
  left: 0;
  width: 3rem;
  letter-spacing: -1px;
  border-right: 1px solid #333;
  user-select: none;
}

.post-content pre.line-numbers .line-numbers-rows > span {
  display: block;
  counter-increment: line;
  padding-right: 0.8rem;
  text-align: right;
  color: #666;
  font-size: 0.85rem;
  line-height: 1.6;
}

.post-content pre.line-numbers .line-numbers-rows > span::before {
  content: counter(line);
}

/* Enhanced Scrollbars for Code Blocks */
.post-content pre::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.post-content pre::-webkit-scrollbar-track {
  background: #2d2d2d;
  border-radius: 4px;
}

.post-content pre::-webkit-scrollbar-thumb {
  background: #555;
  border-radius: 4px;
}

.post-content pre::-webkit-scrollbar-thumb:hover {
  background: #777;
}

/* Focus indicators for accessibility */
.copy-btn:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.reading-controls .btn:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Enhanced dark mode line numbers */
[data-theme="dark"] .post-content pre.line-numbers .line-numbers-rows {
  border-right-color: #4a5568;
}

[data-theme="dark"] .post-content pre.line-numbers .line-numbers-rows > span {
  color: #718096;
}

/* Print styles */
@media print {
  .hero,
  .admin-actions,
  .btn-admin,
  .search-container {
    display: none;
  }
  
  .language-card,
  .topic-card,
  .post-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #000;
  }
  
  .post-content pre {
    background: #f8f9fa;
    color: #212529;
    border: 1px solid #dee2e6;
  }
  
  .post-content code {
    background: #f8f9fa;
    color: #e83e8c;
  }
}