/* Base styles */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

/* Accessibility (Fix 7) */
:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  padding: 0;
  line-height: 1.6;
  font-size: var(--text-body);
  color: var(--color-text);
  background-color: var(--color-background);
  font-family: var(--font-sans);
}

/* Layout containers */
main {
  max-width: 80rem;
  margin: 0 auto;
  padding: 3rem 1rem 4rem;
}

section {
  margin-bottom: 4rem;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin-top: 0;
  color: var(--color-text);
  line-height: 1.2;
}

h1 {
  font-size: clamp(var(--text-h1), 5vw, var(--text-hero));
  margin-bottom: 0.5rem;
}

h2 {
  font-size: clamp(var(--text-h3), 4vw, var(--text-h2));
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.5rem;
}

h3 {
  font-size: var(--text-h3);
  margin-bottom: 0.5rem;
}

h4 {
  font-size: var(--text-h4);
}

p {
  color: var(--color-text-muted);
  margin: 0 0 1rem;
}

blockquote {
  margin: 0 0 1.5rem;
  padding: 1rem 1.5rem;
  border-left: 4px solid var(--color-primary);
  background: var(--color-surface);
  border-radius: 0 0.5rem 0.5rem 0;
  font-style: italic;
  color: var(--color-text);
}

ul,
ol {
  margin: 0 0 1.5rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.375rem;
  color: var(--color-text-muted);
}

/* Skip link (from tokens.css) */

/* Navigation / Header (§4.1) — Sticky Frosted Glass & Polished Nav */
.site-header {
  position: sticky;
  top: 0;
  background: var(--color-header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.site-header .nav-container {
  max-width: 80rem;
  margin: 0 auto;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  position: relative;
}

.nav-actions-wrapper {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.logo {
  font-weight: 800;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--color-text);
  display: flex;
  align-items: center;
  width: 2.25rem;
  height: 2.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  justify-content: center;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.logo:hover {
  transform: translateY(-1px);
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
}

.logo span { color: var(--color-primary); }

.site-identity {
  display: flex;
  flex-direction: column;
}

.site-title a {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.01em;
  transition: color 0.15s ease;
}

.site-title a:hover {
  color: var(--color-primary);
}

.site-tagline {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

/* Nav links with refined micro-interactions */
nav ul {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0.375rem;
  align-items: center;
}

nav ul li a {
  text-decoration: none;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-md);
  transition: color 0.15s ease, background-color 0.15s ease, transform 0.15s ease;
  position: relative;
}

nav ul li a:hover {
  color: var(--color-text);
  background: var(--color-border);
}

nav ul li a[aria-current="page"] {
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.08);
  font-weight: 600;
}

/* Header Actions (Search & Theme Toggle) */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.icon-search-btn {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  width: 2.25rem;
  height: 2.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: all 0.15s ease;
  padding: 0;
}

.icon-search-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.theme-toggle {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  width: 2.25rem;
  height: 2.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: all 0.15s ease;
}

.theme-toggle:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.theme-toggle .sun-icon { display: block; }
.theme-toggle .moon-icon { display: none; }

[data-theme="dark"] .theme-toggle .sun-icon,
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .sun-icon { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .moon-icon { display: block; }
}

/* Responsive & Mobile Menu */
@media (min-width: 44rem) {
  nav ul { display: flex; }
  .nav-toggle { display: none; }
}

@media (max-width: 43.98rem) {
  .site-header .nav-container {
    padding: 0.625rem 0.875rem;
    gap: 0.75rem;
  }

  .site-tagline {
    display: none;
  }

  .nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    width: 2rem;
    height: 2rem;
    cursor: pointer;
    padding: 0.375rem;
    align-items: center;
  }
  .nav-toggle span {
    display: block;
    width: 14px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  nav ul {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0.875rem;
    right: 0.875rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    padding: 0.875rem;
    gap: 0.25rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
    z-index: 101;
  }

  nav.open ul {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  nav ul li a {
    display: block;
    padding: 0.625rem 0.875rem;
    border-radius: var(--radius-md);
  }
}

/* Main layout */
main {
  max-width: 72rem;
  margin: 0 auto;
  padding: 3rem 1rem 4rem;
}

section { margin-bottom: 4rem; }

h1, h2, h3 { margin-top: 0; }
h1 { font-size: clamp(var(--text-h1), 5vw, var(--text-hero)); margin-bottom: 0.5rem; }
h2 { font-size: clamp(var(--text-h3), 4vw, var(--text-h2)); margin-bottom: 1rem; border-bottom: 1px solid var(--color-border); padding-bottom: 0.5rem; }
h3 { font-size: var(--text-h3); margin-bottom: 0.5rem; }

p { color: var(--color-text-muted); margin: 0 0 1rem; }

blockquote {
  margin: 0 0 1.5rem;
  padding: 1rem 1.5rem;
  border-left: 4px solid var(--color-primary);
  background: var(--color-surface);
  border-radius: 0 0.5rem 0.5rem 0;
  font-style: italic;
  color: var(--color-text);
}

ul { margin: 0 0 1.5rem; padding-left: 1.5rem; }
li { margin-bottom: 0.375rem; color: var(--color-text-muted); }

/* Orphaned class definitions (Fix 2) */
.hero__content {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero__subtitle {
  font-size: 1.125rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
  display: block;
}
.hero__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 1.5rem;
}
.btn--primary {
  background: var(--color-primary);
  color: var(--color-background);
}
.page-lead {
  font-size: 1.25rem;
  color: var(--color-text);
  margin-bottom: 2rem;
}
.job__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.25rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.job__role {
  font-weight: 600;
  color: var(--color-primary);
  font-size: 0.9375rem;
}
.job__period {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-weight: 500;
  margin-left: auto;
  margin-right: 1rem;
}
.job__current {
  font-size: 0.75rem;
  background: var(--color-primary);
  color: var(--color-background);
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  font-weight: 600;
}

/* Hero (Fix 3: Two-column layout per DESIGN.md §4.2; Breakpoints per §8) */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 4rem 0 2rem;
  gap: 2.5rem;
}

@media (min-width: 64rem) {
  .hero {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 3.5rem;
    align-items: center;
    text-align: left;
  }
  .hero__content {
    align-items: flex-start;
  }
  .hero__actions {
    justify-content: flex-start;
  }
}

.hero__avatar,
.hero .avatar {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  border: 4px solid var(--color-border);
  object-fit: cover;
  flex-shrink: 0;
  background: var(--color-surface);
}

.hero h1 { font-size: var(--text-hero); margin-bottom: 0.25rem; }
.hero p { max-width: 42rem; margin: 0 0 2rem; color: var(--color-text); }

/* Working on */
.working-on {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}
.working-on li {
  position: relative;
  padding: 1rem 1rem 1rem 2.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  list-style: none;
}
.working-on li::before {
  content: "▹";
  color: var(--color-primary);
  font-weight: bold;
  position: absolute;
  left: 0.75rem;
  top: 1rem;
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}
.skill-category {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}
.skill-category h3 { border-bottom: none; padding-bottom: 0; margin-bottom: 1rem; color: var(--color-primary); }
.skill-category ul { margin: 0; padding-left: 0; list-style: none; }
.skill-category li {
  font-size: 0.9375rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid rgba(48, 54, 61, 0.3);
}
.skill-category li:last-child { border-bottom: none; }

/* Expertise */
.expertise-items {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  margin-top: 0.75rem;
}
.expertise-item {
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}
.expertise-item:last-child {
  padding-bottom: 0;
  border-bottom: none;
}
.expertise-item-title {
  display: block;
  color: var(--color-text);
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 0.125rem;
}
.expertise-item-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.5;
}
.expertise-lead {
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

/* Experience */
.experience-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.job {
  border-left: 3px solid var(--color-primary);
  padding-left: 1.25rem;
}
.job h3 { color: var(--color-text); margin-bottom: 0.125rem; }
.job .org { color: var(--color-primary); font-size: 0.9375rem; margin-bottom: 0.25rem; }
.job .role-time { font-size: 0.875rem; color: var(--color-text-muted); margin-bottom: 0.75rem; }
.job ul { margin: 0; padding-left: 1.25rem; }

/* Learning */
.learning-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
}
.learning-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  text-align: center;
  color: var(--color-text);
  font-size: 0.9375rem;
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

/* Goals */
.goals-list { margin: 0; padding-left: 1.5rem; list-style: none; }
.goals-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}
.goals-list li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: bold;
}

/* Tech stack */
.tech-table { width: 100%; border-collapse: separate; border-spacing: 0.5rem; }
.tech-table td {
  width: 96px;
  height: 96px;
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  background: var(--color-surface);
  text-align: center;
  vertical-align: middle;
  padding: 0.5rem;
}
.tech-table td a { text-decoration: none; color: inherit; display: block; }
.tech-table td img { width: 48px; height: 48px; display: block; margin: 0 auto 0.5rem; }
.tech-table td br + span { display: block; font-size: 0.8125rem; color: var(--color-text-muted); }

/* Connect */
.connect {
  text-align: center;
  padding: 3rem 0;
}
.connect h2 { border: none; padding-bottom: 0; }
.connect .tech-table { margin-top: 2rem; }

/* Footer (§4.6) */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  margin-top: 4rem;
  padding: 3rem 1rem 2rem;
  color: var(--color-text-muted);
}

.footer-container {
  max-width: 80rem;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 40rem) {
  .footer-container {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-brand {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.footer-desc {
  font-size: 0.875rem;
  max-width: 24rem;
}

.footer-col h3 {
  font-size: 1rem;
  color: var(--color-text);
  margin-bottom: 1rem;
}

.footer-nav,
.footer-social {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-nav li,
.footer-social li {
  margin-bottom: 0.5rem;
}

.footer-nav a,
.footer-social a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.875rem;
}

.footer-nav a:hover,
.footer-social a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.footer-bottom {
  max-width: 80rem;
  margin: 2rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 0.875rem;
}

/* Mobile adjustments (< 640px per DESIGN.md §8) */
@media (max-width: 39.98rem) {
  .hero img { width: 100px; height: 100px; }
  main { padding: 2rem 1rem 3rem; }
  section { margin-bottom: 3rem; }
}

/* Cards Grid & Unified Card Architecture */
.cards-grid,
.projects-grid {
  display: grid;
  gap: 1.75rem;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.article-card,
.project-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
  height: 100%;
}

.article-card:hover,
.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
  box-shadow: 0 16px 32px -8px rgba(37, 99, 235, 0.12);
}

.article-card__image-wrapper,
.project-card__image-wrapper {
  overflow: hidden;
  width: 100%;
  background: var(--color-background);
}

.article-card img,
.project-card img {
  width: 100%;
  height: 190px;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.article-card:hover img,
.project-card:hover img {
  transform: scale(1.03);
}

.article-card__content,
.project-card__content {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.5rem;
}

.article-card__category {
  display: inline-block;
  align-self: flex-start;
  background: rgba(37, 99, 235, 0.08);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.625rem;
  border-radius: 1rem;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.article-card h3,
.project-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.4;
  margin: 0 0 0.625rem 0;
  letter-spacing: -0.01em;
}

.article-card h3 a,
.project-card h3 a {
  color: var(--color-text);
  text-decoration: none;
  transition: color 0.15s ease;
}

.article-card h3 a:hover,
.project-card h3 a:hover {
  color: var(--color-primary);
}

.article-card__excerpt,
.project-card__summary {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.5;
  margin: 0 0 1.25rem 0;
  flex: 1;
}

.article-card__meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.project-card__header-group {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.project-card__status {
  background: rgba(16, 185, 129, 0.1);
  color: #059669;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: 1rem;
  white-space: nowrap;
}

.project-card__role {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0 0 1rem 0;
}

.project-card__technologies {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  list-style: none;
  padding: 0;
  margin: auto 0 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.project-card__technologies li {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  padding: 0.2rem 0.625rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* Blog layout & sidebar (Fix 4) */
.blog-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

@media (min-width: 64rem) {
  .blog-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 3rem;
    align-items: start;
  }
}

.blog-sidebar {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.sidebar-widget {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.sidebar-widget h3 {
  font-size: 1.125rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.5rem;
}

.sidebar-search input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.9375rem;
}

.sidebar-search input:focus {
  outline: 2px solid var(--color-focus);
  outline-offset: 0;
}

.sidebar-widget ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar-widget li {
  margin-bottom: 0.5rem;
}

.sidebar-widget li a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.9375rem;
}

.sidebar-widget li a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.pagination-status {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}


/* Breadcrumb */
.breadcrumb {
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
}
.breadcrumb ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  color: var(--color-text-muted);
}
.breadcrumb li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--color-text-muted);
}
.breadcrumb a {
  color: var(--color-text-muted);
  text-decoration: none;
}
.breadcrumb a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}
.breadcrumb [aria-current="page"] {
  color: var(--color-text);
  font-weight: 500;
}

/* Article meta (byline, reading time, date) */
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}

/* Article pagination (prev/next) */
.article-pagination {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}
.article-pagination a {
  display: flex;
  flex-direction: column;
  padding: 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-text);
  max-width: 48%;
  transition: border-color var(--transition-fast);
}
.article-pagination a:hover {
  border-color: var(--color-primary);
}
.article-pagination .label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}
.article-pagination .title {
  font-weight: 600;
  font-size: 0.9375rem;
}
.article-pagination .prev {
  margin-right: auto;
}
.article-pagination .next {
  margin-left: auto;
  text-align: right;
}



/* Article single */
.article-single {
  max-width: 38rem;
  margin: 0 auto;
}
.article-header {
  margin-bottom: 2rem;
}
.article-category {
  display: inline-block;
  background: var(--color-surface);
  color: var(--color-primary);
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  margin-bottom: 1rem;
  font-size: 0.875rem;
}
.article-single h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}
.article-excerpt {
  color: var(--color-text-muted);
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
}
.article-date {
  display: block;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: 2rem;
}
.article-cover {
  width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: cover;
  margin-bottom: 2rem;
}
.article-body {
  line-height: 1.7;
}
.article-body h2 {
  margin-top: 2rem;
  margin-bottom: 1rem;
}
.article-body h3 {
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}
.article-body p {
  margin-bottom: 1.5rem;
}
.article-body ul,
.article-body ol {
  margin-left: 2rem;
  margin-bottom: 1.5rem;
}
.article-body blockquote {
  margin: 2rem 0;
  padding-left: 1.5rem;
}
.article-footer {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}
.tag-list li {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  padding: 0.25rem 0.5rem;
  font-size: 0.875rem;
}

/* Project single */
.project-single {
  max-width: 38rem;
  margin: 0 auto;
}
.project-header {
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.project-single h1 {
  font-size: 2rem;
  margin: 0;
}
.project-status {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-background);
  font-size: 0.875rem;
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
}
.project-cover {
  width: 100%;
  height: auto;
  max-height: 300px;
  object-fit: cover;
  margin-bottom: 1.5rem;
}
.project-summary {
  color: var(--color-text-muted);
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
}
.project-body {
  line-height: 1.7;
}
.project-body h2 {
  margin-top: 2rem;
  margin-bottom: 1rem;
}
.project-body h3 {
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}
.project-body p {
  margin-bottom: 1.5rem;
}
.project-body ul,
.project-body ol {
  margin-left: 2rem;
  margin-bottom: 1.5rem;
}
.project-body blockquote {
  margin: 2rem 0;
  padding-left: 1.5rem;
}
.project-role {
  margin: 1.5rem 0;
}
.project-role h2 {
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
}
.project-role p {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}
.project-tech {
  margin: 1.5rem 0;
}
.project-tech h2 {
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
}
.project-tech ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}
.project-tech li {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  padding: 0.25rem 0.5rem;
  font-size: 0.875rem;
}
.project-links {
  margin-top: 2rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.project-links a {
  display: inline-block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 500;
}
.project-links a:hover {
  background: var(--color-border);
  text-decoration: underline;
}

/* Error page */
.error-404 {
  text-align: center;
  padding: 4rem 1rem;
}
.error-404 h1 {
  font-size: 6rem;
  margin-bottom: 1rem;
  color: var(--color-text-muted);
}
.error-404 p {
  margin-bottom: 2rem;
  color: var(--color-text);
  max-width: 36rem;
}

/* Search panel */
.search-panel {
  max-width: 36rem;
  margin: 2rem auto;
  padding: 2rem;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}
.search-panel input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  font-size: 1rem;
  background: var(--color-surface);
  color: var(--color-text);
}
.search-panel input:focus {
  outline: 2px solid var(--color-focus);
  outline-offset: 0;
}
.search-panel input::placeholder {
  color: var(--color-text-muted);
}
#search-results {
  margin-top: 1.5rem;
}
#search-results ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
#search-results li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
}
#search-results li:last-child {
  border-bottom: 0;
}
.search-type {
  display: inline-block;
  background: var(--color-surface);
  color: var(--color-primary);
  font-size: 0.875rem;
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  margin-right: 0.5rem;
}
.empty-state {
  text-align: center;
  color: var(--color-text-muted);
  font-style: italic;
}

/* Links grid */
.links-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  list-style: none;
  padding: 0;
  margin: 0;
}
.links-grid li {
  display: flex;
  flex-direction: column;
  margin-bottom: 0;
}
.links-grid a {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1.5rem 1rem;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}
.links-grid a:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
  background: var(--color-surface);
  box-shadow: 0 10px 20px -5px rgba(37, 99, 235, 0.12);
  color: var(--color-primary);
}
.links-grid li img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  transition: filter 0.2s ease;
}

[data-theme="dark"] .links-grid li img {
  filter: brightness(0) invert(1);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .links-grid li img {
    filter: brightness(0) invert(1);
  }
}
.links-grid li span {
  font-size: 0.9375rem;
  text-align: center;
}

/* Section headers */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}
.section-header h2 {
  margin: 0;
}
.section-header a {
  font-size: 0.875rem;
  color: var(--color-primary);
  text-decoration: none;
}
.section-header a:hover {
  text-decoration: underline;
}

/* Related articles */
.related-articles {
  margin-top: 3rem;
}
.related-articles h2 {
  margin-bottom: 1.5rem;
}

/* Responsive width for article text */
@media (min-width: 64rem) {
  .article-single {
    max-width: 48rem;
  }
  .project-single {
    max-width: 48rem;
  }
}

/* Search Modal Overlay */
.search-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 6vh 1rem 1rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.search-modal.open {
  opacity: 1;
  visibility: visible;
}

.search-modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.search-modal-container {
  position: relative;
  width: 100%;
  max-width: 38rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  overflow: hidden;
  transform: translateY(-1rem);
  transition: transform 0.2s ease;
}

.search-modal.open .search-modal-container {
  transform: translateY(0);
}

.search-modal-header {
  display: flex;
  align-items: center;
  padding: 1rem;
  border-bottom: 1px solid var(--color-border);
  gap: 0.75rem;
}

.search-input-wrapper {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text-muted);
}

.search-input-wrapper input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 1rem;
  color: var(--color-text);
  outline: none;
}

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

.search-modal-close {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.search-modal-close:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

.search-modal-results {
  max-height: 60vh;
  overflow-y: auto;
  padding: 1rem;
}

.search-modal-results ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.search-modal-results li {
  padding: 0.75rem;
  border-bottom: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: background-color 0.15s ease;
}

.search-modal-results li:hover {
  background: var(--color-background);
}

.search-modal-results li:last-child {
  border-bottom: none;
}

.search-modal-results a {
  text-decoration: none;
  color: var(--color-text);
  font-weight: 600;
  display: block;
}

.search-modal-results a:hover {
  color: var(--color-primary);
}

.search-modal-results .excerpt {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
  margin-bottom: 0;
}

.search-hint {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin: 1.5rem 0;
}