/* ===========================
   Developer — Tech Minimal
=========================== */

* { box-sizing: border-box; }

:root {
  /* base colors from theme */
  --bg: #FAF6F4;
  --surface: #FFFFFF;
  --text: #2B1F24;
  --text-muted: #887A7F;
  --border-color: #E6DAD5;
  --accent-color: #C9506B;

  /* developer palette — indigo + amber */
  --dev-indigo: #6366f1;
  --dev-indigo-deep: #4f46e5;
  --dev-indigo-light: #eef2ff;
  --dev-indigo-glow: rgba(99, 102, 241, 0.08);
  --dev-violet: #8b5cf6;
  --dev-amber: #d97706;
  --dev-amber-light: #fef3c7;
  --dev-emerald: #059669;
  --dev-rose: #e11d48;
  --dev-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);
  --dev-gradient-warm: linear-gradient(135deg, #6366f1, #ec4899);
  --dev-header-line: linear-gradient(90deg, #6366f1, #8b5cf6, #ec4899, #f59e0b);
  --dev-card-glow: rgba(99, 102, 241, 0.04);

  /* typography */
  --font-family: "Jost", system-ui, -apple-system, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Cascadia Code", "Consolas", monospace;
  --font-size-base: 17px;
  --line-height-base: 1.7;

  /* geometry */
  --border-radius: 4px;
  --container-padding: 18px;

  /* depth */
  --shadow: none;
  --shadow-hover: 0 4px 24px rgba(99, 102, 241, 0.08);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.04);

  /* spacing scale */
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* container widths */
  --container-max: 860px;

  /* transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1A1316;
    --surface: #2B2226;
    --text: #F4ECE8;
    --text-muted: #9B8D91;
    --border-color: #3E3438;
    --accent-color: #C9506B;

    --dev-indigo: #818cf8;
    --dev-indigo-deep: #6366f1;
    --dev-indigo-light: rgba(99, 102, 241, 0.12);
    --dev-indigo-glow: rgba(99, 102, 241, 0.06);
    --dev-violet: #a78bfa;
    --dev-amber: #fbbf24;
    --dev-amber-light: rgba(251, 191, 36, 0.1);
    --dev-emerald: #34d399;
    --dev-rose: #fb7185;
  }
}

/* ===========================
   Base
=========================== */

h1, h2, h3, h4, h5, h6, p { margin: 0; }

::selection {
  background: var(--dev-indigo);
  color: #fff;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  background: var(--bg);
  color: var(--text);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  letter-spacing: -0.01em;
}

/* Fade-in animation for page sections */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

section, .article-hero {
  animation: fadeUp 0.5s cubic-bezier(0.4, 0, 0.2, 1) both;
}

body main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

body > main > .container {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  padding-inline: var(--space-lg);
  padding-block: var(--space-xl);
}

.container-central {
  flex: 1;
  min-height: 50vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.container-central h1 {
  font-size: 5rem;
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 1;
  margin-bottom: var(--space-md);
  background: var(--dev-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.container-central p {
  font-size: 1.1rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

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

a:hover {
  color: var(--dev-indigo-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ===========================
   Sticky Header
=========================== */

body > header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid rgba(99, 102, 241, 0.08);
}

body > header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--dev-header-line);
  z-index: 1;
}

@media (prefers-color-scheme: dark) {
  body > header {
    background: rgba(26, 26, 26, 0.88);
  }
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-inline: auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--text);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
  transition: transform var(--transition-fast);
}

.logo:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.logo img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.15);
  transition: box-shadow var(--transition-base);
}

.logo:hover img {
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

.nav-menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: var(--space-xl);
}

.nav-menu a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 4px;
  transition: color var(--transition-base);
}

.nav-menu a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--dev-gradient);
  transition: width var(--transition-base), left var(--transition-base);
  border-radius: 1px;
}

.nav-menu a:hover {
  color: var(--dev-indigo);
  text-decoration: none;
}

.nav-menu a:hover::after {
  width: 100%;
  left: 0;
}

#nav-toggle { display: none; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: transform var(--transition-fast);
}

/* ===========================
   Articles — List Layout
=========================== */

.articles h2 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dev-indigo);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--dev-indigo);
  margin-bottom: var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}


.articles-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* ===========================
   Cards — Horizontal List Items
=========================== */

.card {
  border: none;
  border-bottom: 1px solid var(--border-color);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  padding: var(--space-lg) var(--space-sm);
  margin-inline: calc(-1 * var(--space-sm));
  position: relative;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.card::before {
  content: "";
  position: absolute;
  left: 0;
  top: var(--space-lg);
  bottom: var(--space-lg);
  width: 3px;
  background: var(--dev-gradient);
  border-radius: 2px;
  opacity: 0;
  transform: scaleY(0);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.card:hover {
  transform: none;
  box-shadow: none;
  background: var(--dev-card-glow);
  border-radius: var(--border-radius);
}

.card:hover::before {
  opacity: 1;
  transform: scaleY(1);
}

.card a {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: var(--space-lg);
  height: auto;
  text-decoration: none;
}

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

.card-image {
  width: 88px;
  min-width: 88px;
  height: 88px;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 8px;
  margin: 0;
  order: 0;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  box-shadow: var(--shadow-card);
}

.card:hover .card-image {
  transform: scale(1.04);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.12);
}

.card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--text);
  transition: color var(--transition-fast);
}

.card:hover h3 {
  color: var(--dev-indigo);
}

.card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-2xs);
  color: var(--dev-amber);
  font-size: 0.78rem;
  font-family: var(--font-mono);
  font-weight: 500;
}

.card-meta::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  background: var(--dev-amber);
  border-radius: 50%;
  opacity: 0.6;
}

/* First card — featured treatment */
.articles-grid .card:first-child {
  padding-bottom: var(--space-xl);
  margin-bottom: var(--space-sm);
  border-bottom: 2px solid var(--border-color);
}

.articles-grid .card:first-child::before {
  display: none;
}

.articles-grid .card:first-child a {
  flex-direction: column;
  gap: 0;
}

.articles-grid .card:first-child .card-image {
  width: 100%;
  min-width: 100%;
  height: auto;
  aspect-ratio: 2.4 / 1;
  border-radius: 8px 8px 0 0;
  transition: transform var(--transition-smooth);
}

.articles-grid .card:first-child:hover .card-image {
  transform: scale(1.01);
}

.articles-grid .card:first-child .card-body {
  background: var(--surface);
  padding: var(--space-lg);
  border-radius: 0 0 8px 8px;
  border: 1px solid var(--border-color);
  border-top: 3px solid var(--dev-indigo);
  gap: var(--space-sm);
}

.articles-grid .card:first-child h3 {
  font-size: 1.5rem;
  letter-spacing: -0.03em;
}

.articles-grid .card:first-child:hover h3 {
  color: var(--dev-indigo);
}

.articles-grid .card:first-child p {
  -webkit-line-clamp: 3;
  font-size: 0.95rem;
}

.articles-grid .card:first-child .card-meta::before {
  background: var(--dev-indigo);
}

/* Last card — no bottom border */
.articles-grid .card:last-child {
  border-bottom: none;
}

/* ===========================
   Article Hero
=========================== */

.article-hero {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.article-hero h1 {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  max-width: 100%;
  background: linear-gradient(135deg, var(--text) 0%, var(--dev-indigo-deep) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.featured-image {
  width: 100%;
  aspect-ratio: 2.2 / 1;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.1);
}

.article-meta {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  background: var(--dev-indigo-glow);
  border-left: 3px solid var(--dev-indigo);
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.article-meta .author {
  font-weight: 600;
  color: var(--text);
}

.article-meta time {
  color: var(--dev-amber);
  background: var(--dev-amber-light);
  padding: 2px 8px;
  border-radius: var(--border-radius);
  font-size: 0.75rem;
}

/* ===========================
   Article Body
=========================== */

[itemprop="articleBody"] {
  line-height: 1.8;
  max-width: 780px;
}

[itemprop="articleBody"] h1,
[itemprop="articleBody"] h2,
[itemprop="articleBody"] h3 {
  margin-block: var(--space-xl) var(--space-md);
  letter-spacing: -0.02em;
}

[itemprop="articleBody"] h2 {
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--dev-indigo-light);
  position: relative;
}

[itemprop="articleBody"] h2::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 60px;
  height: 2px;
  background: var(--dev-gradient);
}

[itemprop="articleBody"] p {
  margin-block: var(--space-md);
}

[itemprop="articleBody"] img {
  display: block;
  max-width: min(60%, 640px);
  height: auto;
  margin: var(--space-xl) auto;
  border-radius: var(--border-radius);
}

[itemprop="articleBody"] code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--dev-indigo-light);
  color: var(--dev-indigo-deep);
  padding: 0.15em 0.4em;
  border-radius: var(--border-radius);
  border: none;
}

[itemprop="articleBody"] pre {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
  color: #e0e7ff;
  border: none;
  border-radius: 8px;
  padding: var(--space-lg);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.6;
  box-shadow: 0 4px 16px rgba(30, 27, 75, 0.3);
  position: relative;
}

[itemprop="articleBody"] pre::before {
  content: "code";
  position: absolute;
  top: 8px;
  right: 12px;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(165, 180, 252, 0.4);
}

[itemprop="articleBody"] pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
}

[itemprop="articleBody"] blockquote {
  margin: var(--space-lg) 0;
  padding: var(--space-md) var(--space-lg);
  border-left: 3px solid var(--dev-violet);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.06), rgba(139, 92, 246, 0.04));
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: var(--text-muted);
}

/* Article Tables */
[itemprop="articleBody"] table {
  width: 100%;
  margin: var(--space-lg) 0;
  border-collapse: collapse;
  font-size: 0.9rem;
  font-family: var(--font-mono);
}

[itemprop="articleBody"] table th,
[itemprop="articleBody"] table td {
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

[itemprop="articleBody"] table th {
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--dev-indigo);
  border-bottom: 2px solid var(--dev-indigo);
}

[itemprop="articleBody"] table tbody tr:hover {
  background: var(--surface);
}

/* ===========================
   Breadcrumb
=========================== */

.breadcrumb {
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  margin: 0 0 var(--space-lg) 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  background: var(--dev-indigo-glow);
  border-radius: 6px;
  border: 1px solid rgba(99, 102, 241, 0.06);
}

.breadcrumb a {
  color: var(--dev-indigo);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--dev-indigo-deep);
  text-decoration: underline;
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: var(--space-xs);
  color: var(--text-muted);
}
.breadcrumb li:last-child {
  color: var(--text);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 300px;
}

/* ===========================
   Search
=========================== */

.search-form {
  max-width: 100%;
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-xl);
}

.search-form input {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  font-size: 1rem;
  font-family: var(--font-family);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.search-form input:focus {
  outline: none;
  border-color: var(--dev-indigo);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

.search-form input::placeholder {
  color: var(--text-muted);
}

.search-form button {
  padding: var(--space-sm) var(--space-xl);
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--dev-gradient);
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.25);
}

.search-form button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.35);
}

/* ===========================
   About Section
=========================== */
.about-section {
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: var(--space-2xl);
  position: relative;
  overflow: hidden;
}
.about-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--dev-header-line);
}
.about-section h1 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dev-indigo);
  margin-bottom: var(--space-lg);
}
.about-section h2 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}
.about-section p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-sm);
}
.about-section ul {
  margin: var(--space-sm) 0;
  padding-left: var(--space-lg);
}
.about-section li {
  font-size: 0.92rem;
  margin-bottom: var(--space-xs);
  line-height: 1.65;
  color: var(--text-muted);
}
.about-section li strong {
  color: var(--text);
}

/* ===========================
   Comments — Flat List
=========================== */

.comments h2 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dev-indigo);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--dev-indigo);
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}


.comments-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.comment {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border-color);
  border-radius: 0;
  padding: var(--space-lg) var(--space-sm);
  margin-inline: calc(-1 * var(--space-sm));
  box-shadow: none;
  transition: background var(--transition-base);
}

.comment:hover {
  background: var(--dev-card-glow);
  border-radius: var(--border-radius);
}

.comment:last-child {
  border-bottom: none;
}

.comment-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xs);
  background-color: transparent !important;
}

.comment-author-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: inherit;
}

.comment-author-link:hover {
  text-decoration: none;
}

.comment-author-link:hover .comment-author {
  color: var(--dev-indigo);
}

.comment-source-icon {
  width: 16px;
  height: 16px;
  object-fit: contain;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.comment:hover .comment-source-icon {
  opacity: 1;
}

.comment-author {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text);
  transition: color var(--transition-fast);
}

.comment-date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--dev-amber);
  white-space: nowrap;
  background: var(--dev-amber-light);
  padding: 2px 8px;
  border-radius: var(--border-radius);
}

.comment-content {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ===========================
   Comment CTA
=========================== */

.comment-cta-inner {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.06), rgba(139, 92, 246, 0.04));
  border-left: 3px solid var(--dev-indigo);
  border-radius: 0 8px 8px 0;
  padding: var(--space-lg) var(--space-xl);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  transition: background var(--transition-base);
}

.comment-cta-inner:hover {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.06));
}

.comment-cta-text {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text);
}

.comment-cta-button {
  padding: var(--space-xs) var(--space-xl);
  background: var(--dev-gradient);
  color: #fff;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.25);
}

.comment-cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.35);
  color: #fff;
  text-decoration: none;
}

/* ===========================
   Auth Page
=========================== */

.auth-page {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--bg);
  border: 1px solid var(--border-color);
  border-left: none;
  border-radius: 12px;
  padding: var(--space-2xl);
  padding-left: calc(var(--space-2xl) + 3px);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  position: relative;
  box-shadow: 0 8px 40px rgba(99, 102, 241, 0.08), 0 1px 3px rgba(0, 0, 0, 0.04);
  overflow: hidden;
}

.auth-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--dev-gradient-warm);
}

.auth-card::after {
  content: "";
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.auth-card-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
}

.auth-title {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.auth-subtitle {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.auth-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
}

.auth-field label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.auth-field input {
  padding: var(--space-sm) var(--space-md);
  font-size: 1rem;
  font-family: var(--font-family);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
}

.auth-field input:focus {
  outline: none;
  border-color: var(--dev-indigo);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
  background: var(--bg);
}

.auth-field input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.auth-error {
  padding: var(--space-sm) var(--space-md);
  background: rgba(220, 38, 38, 0.06);
  color: #dc2626;
  border-left: 3px solid #dc2626;
  border-radius: 0;
  font-size: 0.88rem;
  animation: auth-error-in 0.2s ease-out;
}

.auth-submit {
  margin-top: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--dev-gradient);
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  box-shadow: 0 2px 10px rgba(99, 102, 241, 0.3);
}

.auth-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(99, 102, 241, 0.4);
}

.auth-divider {
  position: relative;
  text-align: center;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.auth-divider::before,
.auth-divider::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 40%;
  height: 1px;
  background: var(--border-color);
}
.auth-divider::before { left: 0; }
.auth-divider::after { right: 0; }

.auth-socials {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xs);
}

.auth-social {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: transparent;
  text-decoration: none;
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-base);
}

.auth-social img {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
}

.auth-social:hover {
  background: var(--dev-indigo-glow);
  border-color: var(--dev-indigo);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.1);
}

.auth-social:hover img {
  transform: scale(1.1);
}

.auth-submit.is-loading {
  position: relative;
  pointer-events: none;
  opacity: 0.6;
  color: transparent;
}

.auth-submit.is-loading::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: auth-spin 0.7s linear infinite;
}

.auth-social.is-loading {
  pointer-events: none;
  opacity: 0.4;
  filter: grayscale(1);
}

@keyframes auth-error-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

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

/* ===========================
   Footer
=========================== */

footer {
  margin-top: auto;
  background: linear-gradient(180deg, #1e1b4b 0%, #0f0d2e 100%);
  position: relative;
}

footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--dev-header-line);
}

footer > .container {
  width: 100%;
  max-width: 100%;
}

.footer-inner {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.footer-inner p {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #a5b4fc;
  letter-spacing: 0.02em;
}

.footer-inner p::before {
  content: "";
}

.footer-inner p::after {
  content: "";
}

/* ===========================
   Responsive
=========================== */

@media (max-width: 768px) {
  .hamburger {
    display: flex;
    width: 44px;
    height: 44px;
    min-height: 44px;
    min-width: 44px;
    align-items: center;
    justify-content: center;
  }

  .hamburger:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border-color);
    z-index: 40;
    backdrop-filter: blur(12px);
    padding: var(--space-md);
  }

  .nav-menu ul {
    flex-direction: column;
    padding: var(--space-sm) 0;
    gap: var(--space-xs);
  }

  .nav-menu ul li a {
    padding: var(--space-sm) var(--space-md);
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .nav-menu a::after {
    display: none;
  }

  #nav-toggle:checked ~ .nav-menu {
    display: block;
  }

  [itemprop="articleBody"] img {
    float: none !important;
    max-width: 100%;
    margin: var(--space-lg) 0 !important;
  }

  .search-form {
    flex-direction: column;
  }

  .search-form button {
    width: 100%;
    min-height: 44px;
  }

  .articles-grid .card:first-child .card-image {
    aspect-ratio: 16 / 9;
  }

  .articles-grid .card h3 {
    font-size: 1.1rem;
    line-height: 1.4;
  }

  .articles-grid .card p {
    font-size: 0.9rem;
  }

  /* Larger touch targets */
  input, button, textarea, select {
    font-size: 16px;
  }
}

@media (max-width: 600px) {
  .auth-socials {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .article-meta {
    flex-direction: column;
    gap: var(--space-xs);
    align-items: flex-start;
  }

  .comment-cta-inner {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }

  .comment-cta-button {
    width: 100%;
    text-align: center;
  }

  .container-central h1 {
    font-size: 2.5rem;
  }
}

/* =========================
   Comment replies
========================= */
.comment-replies {
  margin-top: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.comment--reply {
  margin-left: var(--space-lg);
  border-left: 2px solid var(--accent-color, var(--border-color));
  background: transparent;
}

/* ===========================
   Scroll Animations
=========================== */

:root {
  --t-fast: 0.1s;
  --t-base: 0.2s;
  --t-slow: 0.35s;
}

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

.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
}

.animate-on-scroll.is-visible {
  animation: fadeSlideUp 0.4s cubic-bezier(0.25, 0.1, 0.25, 1) forwards;
}

/* Stagger */
.articles-grid .animate-on-scroll.is-visible:nth-child(2) { animation-delay: 0.1s; }
.articles-grid .animate-on-scroll.is-visible:nth-child(3) { animation-delay: 0.15s; }
.articles-grid .animate-on-scroll.is-visible:nth-child(4) { animation-delay: 0.2s; }
.articles-grid .animate-on-scroll.is-visible:nth-child(5) { animation-delay: 0.25s; }
.articles-grid .animate-on-scroll.is-visible:nth-child(6) { animation-delay: 0.3s; }

/* Card hover: tech style — border-left accent, subtle lift */
.card {
  transition: transform var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
  border-left: 3px solid transparent;
}

.card:hover {
  transform: translateY(-2px);
  border-left-color: var(--dev-indigo, var(--accent-color, #4EC9B0));
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.1);
}

/* Fade-in for lazy-loaded images */
@keyframes imgFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

img[loading="lazy"] {
  opacity: 0;
  animation: none;
}

img[loading="lazy"].is-loaded {
  animation: imgFadeIn 0.3s cubic-bezier(0.25, 0.1, 0.25, 1) forwards;
}

/* ===========================
   Cookie Banner
=========================== */

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: #1e1e1e;
  border-left: 3px solid var(--dev-indigo, #4EC9B0);
  transform: translateY(100%);
  opacity: 0;
  transition: transform var(--t-slow), opacity var(--t-slow);
}

.cookie-banner.is-visible {
  transform: translateY(0);
  opacity: 1;
}

.cookie-banner__inner {
  max-width: 1100px;
  margin-inline: auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.cookie-banner__inner p {
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
  margin: 0;
  line-height: 1.5;
  font-family: 'Fira Code', 'JetBrains Mono', monospace, inherit;
}

.cookie-banner__actions {
  display: flex;
  gap: 0.75rem;
  flex-shrink: 0;
}

.cookie-banner__btn {
  padding: 0.5rem 1.25rem;
  border-radius: 2px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  font-family: 'Fira Code', 'JetBrains Mono', monospace, inherit;
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}

.cookie-banner__btn:hover {
  transform: translateY(-1px);
}

.cookie-banner__btn--accept {
  background: var(--dev-indigo, #4EC9B0);
  color: #1e1e1e;
}

.cookie-banner__btn--accept:hover {
  box-shadow: 0 0 12px rgba(99, 102, 241, 0.4);
}

.cookie-banner__btn--more {
  background: transparent;
  color: rgba(255,255,255,0.5);
  border: 1px solid rgba(255,255,255,0.15);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

.cookie-banner__btn--more:hover {
  color: #fff;
  border-color: rgba(255,255,255,0.3);
}

@media (max-width: 600px) {
  .cookie-banner__inner {
    flex-direction: column;
    text-align: center;
  }
}

/* ===========================
   Scroll to Top
=========================== */

.scroll-to-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 999;
  width: 44px;
  height: 44px;
  border-radius: 2px;
  background: #2d2d2d;
  color: var(--dev-indigo, #4EC9B0);
  border: 1px solid var(--dev-indigo, #4EC9B0);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity var(--t-base), visibility var(--t-base), transform var(--t-base), box-shadow var(--t-fast);
}

.scroll-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-to-top:hover {
  box-shadow: 0 0 12px rgba(99, 102, 241, 0.3);
  transform: translateY(-2px);
}

/* ===========================
   Share Buttons
=========================== */

.share-buttons {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem 0;
  margin-top: 1rem;
  border-top: 1px solid var(--border-color, #333);
  flex-wrap: wrap;
}

.share-buttons__label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted, #9ca3af);
  font-family: 'Fira Code', 'JetBrains Mono', monospace, inherit;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 2px;
  font-size: 0.82rem;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  background: #2d2d2d;
  border: 1px solid rgba(255,255,255,0.1);
  transition: transform var(--t-fast), box-shadow var(--t-fast), border-color var(--t-fast);
}

.share-btn:hover {
  transform: translateY(-1px);
  color: #fff;
}

.share-btn svg {
  flex-shrink: 0;
}

.share-btn--vk:hover {
  border-color: #4680C2;
  box-shadow: 0 0 10px rgba(70, 128, 194, 0.3);
}

.share-btn--tg:hover {
  border-color: #0088cc;
  box-shadow: 0 0 10px rgba(0, 136, 204, 0.3);
}

.share-btn--tw:hover {
  border-color: #fff;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.15);
}

@media (max-width: 600px) {
  .share-buttons {
    justify-content: center;
  }
  .share-buttons__label {
    width: 100%;
    text-align: center;
  }
}

/* ===========================
   Related Articles
=========================== */

.related-articles {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color, #333);
}

.related-articles__heading {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 1.5rem;
  font-family: 'Fira Code', 'JetBrains Mono', monospace, inherit;
  border-left: 3px solid var(--dev-indigo, #4EC9B0);
  padding-left: 0.75rem;
}

.related-articles__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.related-card {
  border-radius: 2px;
  overflow: hidden;
  background: var(--surface, #2d2d2d);
  border-left: 3px solid transparent;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
  transition: transform var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
}

.related-card:hover {
  transform: translateY(-2px);
  border-left-color: var(--dev-indigo, #4EC9B0);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.1);
}

.related-card .card-image {
  width: 100%;
  height: 140px;
  object-fit: cover;
}

.related-card .card-body {
  padding: 1rem;
}

.related-card h3 {
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 0.5rem;
  font-family: 'Fira Code', 'JetBrains Mono', monospace, inherit;
}

.related-card p {
  font-size: 0.8rem;
  color: var(--text-muted, #9ca3af);
  margin: 0;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

@media (max-width: 768px) {
  .related-articles__grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

/* ===========================
   Subscribe Form (Footer)
=========================== */

.footer-subscribe {
  padding: 3rem 1.5rem 2rem;
  max-width: 600px;
  margin-inline: auto;
  text-align: center;
}

.subscribe-block__title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin: 0 0 0.5rem;
  font-family: 'Fira Code', 'JetBrains Mono', monospace, inherit;
}

.subscribe-block__text {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.45);
  margin: 0 0 1.5rem;
}

.subscribe-form__group {
  display: flex;
  gap: 0;
  overflow: hidden;
}

.subscribe-form__input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid rgba(255,255,255,0.15);
  border-right: none;
  font-size: 0.85rem;
  font-family: 'Fira Code', 'JetBrains Mono', monospace, inherit;
  background: #1e1e1e;
  color: #fff;
  outline: none;
  min-width: 0;
  border-radius: 2px 0 0 2px;
  transition: border-color var(--t-fast);
}

.subscribe-form__input::placeholder {
  color: rgba(255,255,255,0.3);
  font-family: 'Fira Code', 'JetBrains Mono', monospace, inherit;
}

.subscribe-form__input:focus {
  border-color: var(--dev-indigo, #4EC9B0);
}

.subscribe-form__btn {
  padding: 0.75rem 1.5rem;
  background: var(--dev-indigo, #4EC9B0);
  color: #1e1e1e;
  border: none;
  font-size: 0.85rem;
  font-weight: 700;
  font-family: 'Fira Code', 'JetBrains Mono', monospace, inherit;
  cursor: pointer;
  white-space: nowrap;
  border-radius: 0 2px 2px 0;
  transition: opacity var(--t-fast);
}

.subscribe-form__btn:hover {
  opacity: 0.9;
}

.subscribe-form__success {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: #4EC9B0;
  font-weight: 600;
  font-family: 'Fira Code', 'JetBrains Mono', monospace, inherit;
}

.subscribe-form__success.is-visible {
  display: block !important;
}

@media (max-width: 600px) {
  .auth-socials {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .subscribe-form__group {
    flex-direction: column;
  }
  .subscribe-form__input {
    border-right: 1px solid rgba(255,255,255,0.15);
    border-radius: 2px 2px 0 0;
  }
  .subscribe-form__btn {
    border-radius: 0 0 2px 2px;
  }
}

/* ===========================
   Reduced Motion
=========================== */

/* ===========================
   Accessibility: Skip Link
=========================== */
.skip-link {
  position: fixed;
  top: -100%;
  white-space: nowrap;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-color);
  color: #fff;
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  z-index: 9999;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 0.5rem;
  outline: 2px solid #fff;
  outline-offset: 2px;
}

/* ===========================
   Reading Progress Bar
=========================== */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: rgba(0,0,0,0.05);
  z-index: 1000;
  pointer-events: none;
}

.reading-progress span {
  display: block;
  height: 100%;
  background: var(--accent-color);
  width: 0%;
  transition: width 0.1s linear;
}

/* ===========================
   Reading Time
=========================== */
.reading-time {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.reading-time::before {
  content: "⏱";
  font-size: 0.9em;
}

@media (prefers-reduced-motion: reduce) {
  .animate-on-scroll {
    opacity: 1;
    transform: none;
  }
  .animate-on-scroll.is-visible {
    animation: none;
  }
  img[loading="lazy"] {
    opacity: 1;
  }
  img[loading="lazy"].is-loaded {
    animation: none;
  }
  .cookie-banner {
    transition: none;
  }
  .scroll-to-top {
    transition: none;
  }
}

/* Article Content Typography */
.article-body {
  line-height: 1.75;
}
.article-body h1,
.article-body h2,
.article-body h3 {
  margin-block: 1.5rem 1rem;
}
.article-body p {
  margin-block: 1rem;
}
.article-body ul,
.article-body ol {
  margin-block: 1rem;
  padding-left: 1.5rem;
}
.article-body li {
  margin-block: 0.35rem;
}
.article-body blockquote {
  border-left: 3px solid currentColor;
  padding-left: 1rem;
  margin: 1.5rem 0;
  opacity: 0.85;
  font-style: italic;
}

/* Article Content Images */
.article-body img {
  display: block;
  max-width: min(50%, 620px);
  height: auto;
  margin: 1.5rem auto;
  border-radius: 8px;
}

/* Article Tables */
.article-body table {
  width: 100%;
  margin: 1.5rem 0;
  border-collapse: collapse;
  border: 1px solid rgba(128, 128, 128, 0.3);
  border-radius: 8px;
  overflow: hidden;
  display: block;
  overflow-x: auto;
  white-space: nowrap;
}
.article-body table thead,
.article-body table tbody,
.article-body table tfoot {
  display: table;
  width: 100%;
  table-layout: fixed;
}
.article-body table thead {
  background: rgba(128, 128, 128, 0.15);
  font-weight: 700;
}
.article-body table th,
.article-body table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border: 1px solid rgba(128, 128, 128, 0.2);
  white-space: normal;
  word-break: break-word;
}
.article-body table th {
  font-weight: 700;
  text-align: center;
}
.article-body table tbody tr:nth-child(even) {
  background: rgba(128, 128, 128, 0.05);
}
.article-body table tbody tr:hover {
  background: rgba(128, 128, 128, 0.08);
}
@media (max-width: 768px) {
  .article-body table {
    font-size: 0.85rem;
  }
  .article-body table th,
  .article-body table td {
    padding: 0.5rem;
  }
  .article-body img {
    max-width: 100%;
  }
}

/* Fix: auto-reveal hidden elements that never enter viewport */
.animate-on-scroll:not(.is-visible) {
  animation: aos-fallback-reveal 0.5s ease forwards;
  animation-delay: 1.5s;
}
@keyframes aos-fallback-reveal {
  to { opacity: 1; transform: translateY(0); }
}