/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  line-height: 1.6;
}

body {
  font-family: var(--font-family);
  color: var(--text-color);
  background: var(--background-color);
  font-size: var(--font-size-base);
}

/* Layout helpers */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
}

.site-main {
  padding: var(--spacing-xl) 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

/* Header */
.site-header {
  background: var(--primary-color);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
}

.header-upper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
}

.header-lower {
  width: 100%;
}

@media (min-width: 768px) {
  .header-inner {
    padding: var(--spacing-md) 0;
  }
}

@media (min-width: 1024px) {
  .header-inner {
    gap: var(--spacing-md);
  }

  .header-lower {
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    padding-top: var(--spacing-sm);
  }
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  text-decoration: none;
  color: inherit;
}

.site-logo img {
  height: var(--header-logo-height, 44px);
  width: auto;
  object-fit: contain;
}

.site-logo__text {
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 48px;
  height: 48px;
  background: transparent;
  border: none;
  color: inherit;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.nav-toggle:focus-visible,
.nav-toggle:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.nav-toggle__bar {
  width: 22px;
  height: 2px;
  background-color: currentColor;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle__label {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-nav-bar {
  display: none;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.05);
  backdrop-filter: blur(8px);
}

.site-nav-bar__list {
  list-style: none;
  display: flex;
  gap: var(--spacing-sm);
  margin: 0;
  padding: var(--spacing-sm) var(--spacing-sm);
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
  /* Hide scrollbar for Chrome, Safari and Opera */
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.3) transparent;
  /* Firefox */
  -ms-overflow-style: -ms-autohiding-scrollbar;
  /* IE and Edge */
}

.site-nav-bar__list::-webkit-scrollbar {
  height: 4px;
  /* Chrome, Safari and Opera */
}

.site-nav-bar__list::-webkit-scrollbar-track {
  background: transparent;
}

.site-nav-bar__list::-webkit-scrollbar-thumb {
  background-color: rgba(255, 255, 255, 0.3);
  border-radius: 2px;
}

.site-nav-bar__list::-webkit-scrollbar-thumb:hover {
  background-color: rgba(255, 255, 255, 0.5);
}

.site-nav-bar__item {
  flex: 0 0 auto;
}

.site-nav-bar__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--color-nav-text);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}

.site-nav-bar__link:hover,
.site-nav-bar__link:focus-visible {
  background-color: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
}

.site-nav-bar__link.is-active {
  background-color: #fff;
  color: var(--primary-color);
}

.site-nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  z-index: 90;
}

.site-nav-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.site-nav-panel {
  position: fixed;
  inset: 0 auto 0 0;
  width: min(320px, 80vw);
  background: var(--background-color);
  box-shadow: var(--shadow-lg);
  transform: translateX(-100%);
  transition: transform var(--transition-normal);
  display: flex;
  flex-direction: column;
  z-index: 100;
}

.site-nav-panel.is-open {
  transform: translateX(0);
}

.site-nav-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.site-nav-panel__title {
  font-weight: 700;
}

.nav-close {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 48px;
  height: 48px;
  background: transparent;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-md);
  position: relative;
  transition: background-color var(--transition-fast);
}

.nav-close:hover,
.nav-close:focus-visible {
  background: var(--background-light);
}

.nav-close__bar {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 22px;
  height: 2px;
  background: currentColor;
  transform-origin: center;
}

.nav-close__bar:first-child {
  transform: translate(-50%, -50%) rotate(45deg);
}

.nav-close__bar:last-child {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.site-nav-panel__list {
  list-style: none;
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  overflow-y: auto;
}

.site-nav-panel__link {
  display: block;
  padding: var(--spacing-sm) 0;
  font-size: var(--font-size-lg);
  color: var(--text-color);
  text-decoration: none;
  border-bottom: 1px solid var(--border-color);
}

.site-nav-panel__item:last-child .site-nav-panel__link {
  border-bottom: none;
}

.site-nav-panel__link:hover,
.site-nav-panel__link:focus-visible {
  color: var(--primary-color);
}

@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }

  .site-nav-bar {
    display: block;
  }

  .site-nav-bar__list {
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
  }

  .site-nav-bar__link {
    border-radius: var(--radius-md);
  }

  .site-nav-overlay {
    display: none;
  }

  .site-nav-panel {
    display: none;
  }
}

/* Hero */
.hero {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  text-align: center;
}

.hero__title {
  font-size: var(--font-size-2xl);
  line-height: 1.3;
}

@media (min-width: 768px) {
  .hero__title {
    font-size: var(--font-size-3xl);
  }
}

.section-title {
  font-size: var(--font-size-xl);
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
}

@media (min-width: 768px) {
  .section-title {
    font-size: var(--font-size-2xl);
  }
}

/* Articles */
.articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

@media (min-width: 768px) {
  .articles-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
  }
}

.article-card {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.article-card__media {
  width: 100%;
  height: var(--article-image-height);
  overflow: hidden;
}

.article-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.article-card:hover .article-card__media img {
  transform: scale(1.05);
}

.article-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
}

.article-card__title {
  font-size: var(--font-size-lg);
  line-height: 1.35;
}

.article-card__title a {
  color: var(--text-color);
  text-decoration: none;
}

.article-card__title a:hover {
  color: var(--primary-color);
}

.article-card__summary {
  color: var(--text-light);
  line-height: 1.5;
}

.article-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
}

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

.badge--date {
  background: var(--background-light);
  color: var(--text-light);
}

/* Category sections */
.category-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.articles-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

@media (min-width: 768px) {
  .articles-list {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  }
}

.article-item {
  display: grid;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-fast);
}

.article-item:hover {
  box-shadow: var(--shadow-md);
}

.article-item__media {
  width: 100%;
  height: 200px;
  overflow: hidden;
  border-radius: var(--radius-sm);
}

.article-item__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-item__body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.article-item__title {
  font-size: var(--font-size-base);
  line-height: 1.45;
}

.article-item__title a {
  color: var(--text-color);
  text-decoration: none;
}

.article-item__title a:hover {
  color: var(--primary-color);
}

.breadcrumb__item:not(:last-child)::after {
  content: "/";
  color: var(--border-color);
}

.breadcrumb a {
  color: var(--accent-color);
  text-decoration: none;
}

.category-hero {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.category-hero__title {
  font-size: var(--font-size-2xl);
  color: var(--primary-color);
}

.category-hero__description {
  color: var(--text-light);
  line-height: 1.6;
}

@media (min-width: 768px) {
  .category-hero__title {
    font-size: var(--font-size-3xl);
  }
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.pagination__link,
.pagination__current {
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  text-decoration: none;
  color: var(--text-color);
  font-size: var(--font-size-sm);
}

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

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

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

.article-view__header {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.article-view__title {
  font-size: var(--font-size-2xl);
  line-height: 1.35;
  color: var(--primary-color);
}

.article-view__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  color: var(--text-light);
  font-size: var(--font-size-sm);
}

.article-view__media {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--background-light);
  display: flex;
  justify-content: center;
  align-items: center;
  max-height: 45vh;
}

.article-view__media>figcaption {
  display: none !important;
}

.article-view__media img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 600px;
  display: block;
  object-fit: contain;
}

.article-view__content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  font-size: var(--font-size-lg);
  line-height: 1.8;
}

.article-view__content h2,
.article-view__content h3 {
  margin-top: var(--spacing-lg);
  color: var(--primary-color);
}

.article-view__content img {
  max-width: 100%;
  border-radius: var(--radius-md);
}

.article-view__video {
  width: 100%;
  max-width: 800px;
  height: 450px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #000;
  margin: 0 auto;
}

.article-view__video iframe,
.article-view__video video {
  width: 100%;
  height: 100%;
  border: 0;
}

.article-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

.article-info__item a {
  color: var(--accent-color);
}

.article-info__links {
  margin: var(--spacing-xs) 0 0 var(--spacing-md);
  padding: 0;
  list-style: disc;
  display: grid;
  gap: var(--spacing-xs);
}

.article-tags {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.article-tags h2 {
  font-size: var(--font-size-lg);
  color: var(--primary-color);
}

.article-tags__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.article-tags__tag {
  background: var(--background-light);
  color: var(--primary-color);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
}

.article-supplement {
  margin-bottom: var(--spacing-xl);
}

.search-hero {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.search-hero__subtitle {
  color: var(--text-light);
}

.search-results {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

.search-result {
  display: grid;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-fast);
}

.search-result:hover {
  box-shadow: var(--shadow-md);
}

.search-result__media {
  width: 100%;
  height: 200px;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--background-light);
}

.search-result__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.search-result__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.search-result__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
}

.search-result__title a {
  color: var(--text-color);
  text-decoration: none;
}

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

.search-result__summary {
  color: var(--text-light);
  line-height: 1.5;
}

.search-empty {
  text-align: center;
  padding: var(--spacing-xl) 0;
  color: var(--text-light);
}

@media (min-width: 768px) {
  .search-results {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }

  .search-result {
    grid-template-columns: 180px 1fr;
    align-items: center;
  }

  .search-result__media {
    height: 140px;
  }
}

@media (min-width: 1024px) {
  .article-view__title {
    font-size: 2.25rem;
  }
}

.article-sidebar {
  display: grid;
  gap: var(--spacing-lg);
}

.loading {
  opacity: 0.6;
  pointer-events: none;
}

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

/* Focus styles */
a:focus,
button:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}