:root {
  --color-primary: #3B5BDB;
  --color-primary-dark: #2f4ab8;
  --color-bg: #F1F3F5;
  --color-surface: #ffffff;
  --color-text: #212529;
  --color-text-muted: #495057;
  --color-border: #dee2e6;
  --color-overlay: rgba(33, 37, 41, 0.72);
  --font-sans: "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-display: Georgia, "Times New Roman", serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --radius: 6px;
  --shadow: 0 4px 24px rgba(33, 37, 41, 0.08);
  --max-width: 1200px;
  --nav-height: 64px;
  --transition: 0.2s ease;
}

[data-theme="dark"] {
  --color-bg: #1a1d21;
  --color-surface: #212529;
  --color-text: #F1F3F5;
  --color-text-muted: #adb5bd;
  --color-border: #343a40;
  --color-overlay: rgba(0, 0, 0, 0.75);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-primary-dark);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.25;
  margin-top: 0;
}

p {
  margin-top: 0;
  margin-bottom: var(--space-sm);
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-xs) var(--space-sm);
  z-index: 9999;
  border-radius: var(--radius);
}

.skip-link:focus {
  top: var(--space-sm);
}

/* Split nav header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  align-items: center;
  padding: var(--space-sm);
  gap: var(--space-sm);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

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

.logo-mark {
  width: 32px;
  height: 32px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.icon-btn {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  color: var(--color-text);
  font-size: 0.875rem;
  transition: background var(--transition);
}

.icon-btn:hover {
  background: var(--color-bg);
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0.5rem;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition);
}

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

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

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

.main-nav {
  grid-column: 1 / -1;
  display: none;
  flex-direction: column;
  gap: var(--space-xs);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
}

.main-nav.is-open {
  display: flex;
}

.main-nav a {
  color: var(--color-text);
  font-weight: 500;
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--color-border);
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--color-primary);
}

@media (min-width: 768px) {
  .header-inner {
    grid-template-columns: auto 1fr auto;
    grid-template-rows: auto;
    padding: var(--space-sm) var(--space-md);
  }

  .menu-toggle {
    display: none;
  }

  .main-nav {
    display: flex;
    flex-direction: row;
    grid-column: 2;
    justify-content: center;
    gap: var(--space-md);
    padding: 0;
    border: none;
  }

  .main-nav a {
    border: none;
    padding: var(--space-xs) var(--space-sm);
  }
}

/* Hero grid */
.hero-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-sm);
  display: grid;
  gap: var(--space-sm);
}

.hero-featured {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: flex-end;
}

.hero-featured img,
.hero-featured svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-featured::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--color-overlay) 40%, transparent);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: var(--space-md);
  color: #fff;
}

.hero-content h1 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  margin-bottom: var(--space-xs);
}

.hero-content h1 a {
  color: #fff;
}

.hero-content h1 a:hover {
  opacity: 0.9;
}

.hero-meta {
  font-size: 0.875rem;
  opacity: 0.9;
}

.hero-side {
  display: grid;
  gap: var(--space-sm);
}

.hero-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 140px;
  display: flex;
  align-items: flex-end;
}

.hero-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--color-overlay) 50%, transparent);
}

.hero-card-content {
  position: relative;
  z-index: 1;
  padding: var(--space-sm);
  color: #fff;
}

.hero-card-content h2 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.hero-card-content h2 a {
  color: #fff;
}

.hero-card-content .hero-meta {
  font-size: 0.75rem;
}

@media (min-width: 768px) {
  .hero-grid {
    grid-template-columns: 1.4fr 1fr;
    grid-template-rows: auto auto;
    padding: var(--space-lg) var(--space-md);
    gap: var(--space-md);
  }

  .hero-featured {
    grid-row: span 2;
    min-height: 480px;
  }

  .hero-side {
    grid-template-columns: 1fr;
  }
}

/* Sections */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-sm);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--space-md);
  border-bottom: 3px solid var(--color-primary);
  padding-bottom: var(--space-xs);
}

.section-header h2 {
  font-size: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0;
}

.section-header a {
  font-size: 0.875rem;
  font-weight: 500;
}

/* Card grid */
.card-grid {
  display: grid;
  gap: var(--space-md);
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition);
}

.card:hover {
  transform: translateY(-2px);
}

.card-image {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-body {
  padding: var(--space-md);
}

.card-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.card-body h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
}

.card-body h3 a {
  color: var(--color-text);
}

.card-body h3 a:hover {
  color: var(--color-primary);
}

.card-excerpt {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.card-meta {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

@media (min-width: 640px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .card-grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Editorial picks horizontal */
.picks-row {
  display: grid;
  gap: var(--space-md);
}

.pick-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: var(--space-sm);
  align-items: start;
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.pick-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.pick-thumb {
  border-radius: var(--radius);
  overflow: hidden;
}

.pick-thumb img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.pick-number {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--color-primary);
  line-height: 1;
  opacity: 0.4;
}

@media (min-width: 768px) {
  .picks-row {
    grid-template-columns: repeat(3, 1fr);
  }

  .pick-item {
    grid-template-columns: 1fr;
    border-bottom: none;
    border-right: 1px solid var(--color-border);
    padding-right: var(--space-md);
    padding-bottom: 0;
  }

  .pick-item:last-child {
    border-right: none;
    padding-right: 0;
  }

  .pick-thumb {
    margin-bottom: var(--space-sm);
  }
}

/* Page layouts */
.page-header {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-sm) var(--space-md);
}

.page-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: var(--space-sm);
}

.page-intro {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 65ch;
}

.content-narrow {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 var(--space-sm) var(--space-xl);
}

.content-narrow h2 {
  font-size: 1.375rem;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.content-narrow h3 {
  font-size: 1.125rem;
  margin-top: var(--space-md);
}

/* Article page */
.article-header {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-sm) var(--space-md);
}

.article-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  margin-bottom: var(--space-sm);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.author-block {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.author-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
}

.author-info strong {
  display: block;
  color: var(--color-text);
}

.author-info span {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.article-hero-img {
  max-width: var(--max-width);
  margin: 0 auto var(--space-lg);
  padding: 0 var(--space-sm);
}

.article-hero-img img {
  width: 100%;
  border-radius: var(--radius);
  max-height: 420px;
  object-fit: cover;
}

.article-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 var(--space-sm) var(--space-xl);
}

.article-body p {
  font-size: 1.0625rem;
}

.article-body blockquote {
  margin: var(--space-md) 0;
  padding: var(--space-md);
  border-left: 4px solid var(--color-primary);
  background: var(--color-surface);
  font-style: italic;
  color: var(--color-text-muted);
}

.related-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-xl);
}

/* Contact form */
.contact-grid {
  display: grid;
  gap: var(--space-lg);
}

.contact-info {
  background: var(--color-surface);
  padding: var(--space-md);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.contact-form label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: 0.625rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
  background: var(--color-bg);
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

.btn {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition);
}

.btn:hover {
  background: var(--color-primary-dark);
  color: #fff;
}

@media (min-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr 1.5fr;
  }
}

/* Footer */
.site-footer {
  background: var(--color-text);
  color: #adb5bd;
  padding: var(--space-lg) var(--space-sm);
  margin-top: var(--space-xl);
}

[data-theme="dark"] .site-footer {
  background: #0d0f11;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  gap: var(--space-lg);
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: var(--space-sm);
}

.footer-brand p {
  font-size: 0.9375rem;
  max-width: 36ch;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.footer-nav h3 {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #fff;
  margin-bottom: var(--space-sm);
  font-family: var(--font-sans);
}

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

.footer-nav li {
  margin-bottom: var(--space-xs);
}

.footer-nav a {
  color: #adb5bd;
  font-size: 0.9375rem;
}

.footer-nav a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid #343a40;
  padding-top: var(--space-md);
  font-size: 0.8125rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-sm);
}

.footer-bottom a {
  color: #adb5bd;
}

@media (min-width: 768px) {
  .footer-inner {
    grid-template-columns: 1.5fr 2fr;
  }

  .footer-nav {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Cookie notice */
.cookie-notice {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-md);
  box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.1);
  z-index: 200;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.cookie-notice.is-visible {
  transform: translateY(0);
}

.cookie-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.cookie-inner p {
  margin: 0;
  font-size: 0.9375rem;
}

@media (min-width: 640px) {
  .cookie-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* Utility */
.text-muted {
  color: var(--color-text-muted);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  list-style: none;
  padding: 0;
  margin: var(--space-md) 0;
}

.tag-list a {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.tag-list a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.updated-note {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  font-style: italic;
}