/*
Theme Name: UAVTech News
Theme URI: https://uavtech.news
Author: UAVTech Media
Author URI: https://uavtech.news
Description: A premium drone & UAV news platform theme with modern editorial design, optimized for performance and SEO.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: uavtech-news
Tags: news, magazine, blog, custom-header, custom-menu, featured-images, translation-ready, two-columns

UAVTech News — The global authority on drone technology and unmanned aerial systems.
*/

/* ============================================
   CSS CUSTOM PROPERTIES (Design System)
   ============================================ */
:root {
  /* Primary Palette — Tech-forward, authoritative */
  --color-primary: #0A1628;
  --color-primary-light: #1B2D4A;
  --color-primary-lighter: #2A4066;
  --color-accent: #00D4FF;
  --color-accent-hover: #00B8E0;
  --color-accent-subtle: rgba(0, 212, 255, 0.08);
  --color-accent-glow: rgba(0, 212, 255, 0.15);
  --color-secondary: #FF6B35;
  --color-secondary-hover: #E55A2B;

  /* Neutrals */
  --color-bg: #FAFBFC;
  --color-surface: #FFFFFF;
  --color-surface-elevated: #FFFFFF;
  --color-border: #E8ECF1;
  --color-border-light: #F0F3F7;
  --color-text: #1A1A2E;
  --color-text-secondary: #6B7280;
  --color-text-tertiary: #9CA3AF;
  --color-text-inverse: #FFFFFF;

  /* Category Colors */
  --cat-military: #DC2626;
  --cat-commercial: #2563EB;
  --cat-technology: #7C3AED;
  --cat-regulation: #059669;
  --cat-delivery: #D97706;
  --cat-agriculture: #16A34A;

  /* Typography */
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Source Serif 4', 'Georgia', serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Type Scale — Major Third (1.25) */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --max-width: 1320px;
  --max-width-content: 780px;
  --sidebar-width: 380px;
  --header-height: 72px;

  /* Shadows — Layered depth system */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-card-hover: 0 20px 40px -12px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.12);

  /* Borders */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;

  /* Z-index scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

::selection {
  background: var(--color-accent);
  color: var(--color-primary);
}

/* Focus styles for accessibility */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
}

/* ============================================
   SITE HEADER / NAVIGATION
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--duration-normal) var(--ease-out),
              background var(--duration-normal) var(--ease-out);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-md);
}

/* Top bar — Breaking news ticker */
.top-bar {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: var(--space-2) 0;
  overflow: hidden;
}

.top-bar__inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.top-bar__label {
  flex-shrink: 0;
  background: var(--color-accent);
  color: var(--color-primary);
  padding: 2px var(--space-3);
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.65rem;
  animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 212, 255, 0.4); }
  50% { box-shadow: 0 0 8px 2px rgba(0, 212, 255, 0.2); }
}

.top-bar__ticker {
  overflow: hidden;
  white-space: nowrap;
  flex: 1;
}

.top-bar__ticker-inner {
  display: inline-block;
  animation: ticker 30s linear infinite;
}

@keyframes ticker {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.top-bar__ticker-item {
  display: inline;
  padding: 0 var(--space-8);
}

.top-bar__ticker-separator {
  color: var(--color-accent);
  margin: 0 var(--space-2);
}

.top-bar__date {
  flex-shrink: 0;
  color: var(--color-text-tertiary);
  font-size: var(--text-xs);
}

/* Main header */
.header-main {
  padding: var(--space-5) 0;
}

.header-main__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.site-logo__icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary-light));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.site-logo__icon::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.15));
}

.site-logo__icon svg {
  width: 26px;
  height: 26px;
  fill: var(--color-text-inverse);
  position: relative;
  z-index: 1;
}

.site-logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.site-logo__name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-primary);
}

.site-logo__name span {
  color: var(--color-accent);
}

.site-logo__tagline {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-tertiary);
  margin-top: 2px;
}

/* Navigation */
.main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.main-nav__list {
  display: flex;
  list-style: none;
  gap: var(--space-1);
  align-items: center;
}

.main-nav__item {}

.main-nav__link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
  position: relative;
}

.main-nav__link:hover,
.main-nav__link--active {
  color: var(--color-text);
  background: var(--color-accent-subtle);
}

.main-nav__link--active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: var(--space-4);
  right: var(--space-4);
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}

/* Header search */
.header-search {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.header-search__input {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  min-width: 200px;
}

.header-search__input:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-glow);
}

.header-search__kbd {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 1px 6px;
  border-radius: 4px;
  margin-left: auto;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  padding: var(--space-2);
  cursor: pointer;
  color: var(--color-text);
}

.menu-toggle svg {
  width: 24px;
  height: 24px;
}

/* ============================================
   HERO SECTION — Featured Stories
   ============================================ */
.hero-section {
  padding: var(--space-8) 0 var(--space-12);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  grid-template-rows: auto auto;
  gap: var(--space-6);
  min-height: 520px;
}

/* Main featured story */
.hero-main {
  grid-row: 1 / 3;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
}

.hero-main__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.hero-main:hover .hero-main__image {
  transform: scale(1.03);
}

.hero-main__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(10, 22, 40, 0.95) 0%,
    rgba(10, 22, 40, 0.6) 40%,
    rgba(10, 22, 40, 0.1) 100%
  );
}

.hero-main__content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-10);
}

.hero-main__category {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: var(--color-accent);
  color: var(--color-primary);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-4);
}

.hero-main__title {
  font-size: var(--text-4xl);
  color: var(--color-text-inverse);
  margin-bottom: var(--space-4);
  max-width: 600px;
  line-height: 1.15;
}

.hero-main__excerpt {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.75);
  max-width: 520px;
  line-height: 1.6;
  margin-bottom: var(--space-5);
}

.hero-main__meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.6);
}

.hero-main__author-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.hero-main__author-name {
  color: var(--color-accent);
  font-weight: 600;
}

.hero-main__read-time {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* Secondary hero cards */
.hero-secondary {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
}

.hero-secondary:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
  border-color: transparent;
}

.hero-secondary__image-wrap {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.hero-secondary__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.hero-secondary:hover .hero-secondary__image {
  transform: scale(1.05);
}

.hero-secondary__content {
  padding: var(--space-5);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.hero-secondary__category {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--space-2);
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 4px;
  margin-bottom: var(--space-3);
  width: fit-content;
}

.hero-secondary__category--military {
  background: rgba(220, 38, 38, 0.1);
  color: var(--cat-military);
}
.hero-secondary__category--commercial {
  background: rgba(37, 99, 235, 0.1);
  color: var(--cat-commercial);
}
.hero-secondary__category--technology {
  background: rgba(124, 58, 237, 0.1);
  color: var(--cat-technology);
}
.hero-secondary__category--regulation {
  background: rgba(5, 150, 105, 0.1);
  color: var(--cat-regulation);
}
.hero-secondary__category--delivery {
  background: rgba(217, 119, 6, 0.1);
  color: var(--cat-delivery);
}

.hero-secondary__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.hero-secondary__meta {
  margin-top: auto;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* ============================================
   SECTION HEADERS
   ============================================ */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-4);
  border-bottom: 2px solid var(--color-primary);
}

.section-header__title {
  font-size: var(--text-xl);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.section-header__accent {
  width: 4px;
  height: 24px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}

.section-header__link {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
}

.section-header__link:hover {
  color: var(--color-accent-hover);
}

.section-header__link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--duration-fast) var(--ease-out);
}

.section-header__link:hover svg {
  transform: translateX(3px);
}

/* ============================================
   CONTENT GRID — Main + Sidebar
   ============================================ */
.content-section {
  padding: var(--space-8) 0 var(--space-16);
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: var(--space-10);
  align-items: start;
}

/* ============================================
   ARTICLE CARDS
   ============================================ */
.article-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.article-card {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-6);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
}

.article-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
  border-color: transparent;
}

.article-card__image-wrap {
  position: relative;
  overflow: hidden;
  min-height: 220px;
}

.article-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

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

.article-card__content {
  padding: var(--space-6) var(--space-6) var(--space-6) 0;
  display: flex;
  flex-direction: column;
}

.article-card__category {
  display: inline-flex;
  padding: 2px var(--space-2);
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 4px;
  margin-bottom: var(--space-3);
  width: fit-content;
}

.article-card__title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
  line-height: 1.3;
}

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

.article-card__excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--space-4);
}

.article-card__footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.article-card__author {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.article-card__author-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
}

.article-card__author-name {
  font-weight: 600;
  color: var(--color-text);
}

.article-card__stats {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.article-card__stat {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.article-card__stat svg {
  width: 14px;
  height: 14px;
  opacity: 0.5;
}

/* ============================================
   SIDEBAR
   ============================================ */
.sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--space-8));
}

.sidebar-widget {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

.sidebar-widget__title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Trending widget */
.trending-list {
  list-style: none;
}

.trending-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border-light);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

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

.trending-item:first-child {
  padding-top: 0;
}

.trending-item:hover .trending-item__title {
  color: var(--color-accent);
}

.trending-item__number {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-border);
  line-height: 1;
  flex-shrink: 0;
  width: 32px;
  transition: color var(--duration-fast) var(--ease-out);
}

.trending-item:hover .trending-item__number {
  color: var(--color-accent);
}

.trending-item__content {
  flex: 1;
  min-width: 0;
}

.trending-item__title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: var(--space-1);
  transition: color var(--duration-fast) var(--ease-out);
}

.trending-item__meta {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

/* Newsletter widget */
.newsletter-widget {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border: none;
  color: var(--color-text-inverse);
}

.newsletter-widget .sidebar-widget__title {
  border-bottom-color: rgba(255, 255, 255, 0.15);
  color: var(--color-text-inverse);
}

.newsletter-widget__text {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-5);
  line-height: 1.6;
}

.newsletter-widget__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.newsletter-widget__input {
  padding: var(--space-3) var(--space-4);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-inverse);
  transition: all var(--duration-fast) var(--ease-out);
}

.newsletter-widget__input::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.newsletter-widget__input:focus {
  outline: none;
  border-color: var(--color-accent);
  background: rgba(255, 255, 255, 0.15);
}

.newsletter-widget__button {
  padding: var(--space-3) var(--space-4);
  background: var(--color-accent);
  color: var(--color-primary);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 700;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.newsletter-widget__button:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

/* Tags widget */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tag-cloud__tag {
  padding: var(--space-1) var(--space-3);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.tag-cloud__tag:hover {
  background: var(--color-accent-subtle);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ============================================
   CATEGORY BAR
   ============================================ */
.category-bar {
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.category-bar__inner {
  display: flex;
  gap: var(--space-3);
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.category-bar__inner::-webkit-scrollbar {
  display: none;
}

.category-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-secondary);
}

.category-pill:hover,
.category-pill--active {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

.category-pill__count {
  font-size: var(--text-xs);
  opacity: 0.6;
}

/* ============================================
   SINGLE ARTICLE PAGE
   ============================================ */
.single-article {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: var(--space-10) var(--space-6);
}

.single-article__header {
  margin-bottom: var(--space-10);
}

.single-article__category {
  display: inline-flex;
  padding: var(--space-1) var(--space-3);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-5);
}

.single-article__title {
  font-size: var(--text-5xl);
  margin-bottom: var(--space-6);
  line-height: 1.1;
  max-width: 700px;
}

.single-article__subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-6);
  max-width: 640px;
}

.single-article__meta {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-5) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.single-article__author-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.single-article__author-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
}

.single-article__author-name {
  font-weight: 700;
  color: var(--color-text);
}

.single-article__author-role {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

/* Article body typography */
.single-article__body {
  font-size: var(--text-lg);
  line-height: 1.8;
}

.single-article__body p {
  margin-bottom: var(--space-6);
}

.single-article__body h2 {
  font-size: var(--text-2xl);
  margin: var(--space-12) 0 var(--space-5);
}

.single-article__body h3 {
  font-size: var(--text-xl);
  margin: var(--space-8) 0 var(--space-4);
}

.single-article__body blockquote {
  margin: var(--space-8) 0;
  padding: var(--space-6) var(--space-8);
  border-left: 4px solid var(--color-accent);
  background: var(--color-accent-subtle);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--color-text-secondary);
}

.single-article__body img {
  border-radius: var(--radius-lg);
  margin: var(--space-8) 0;
}

.single-article__body a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: rgba(0, 212, 255, 0.3);
  text-underline-offset: 3px;
  transition: all var(--duration-fast) var(--ease-out);
}

.single-article__body a:hover {
  text-decoration-color: var(--color-accent);
}

.single-article__body figure {
  margin: var(--space-10) calc(var(--space-8) * -1);
}

.single-article__body figcaption {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  text-align: center;
  margin-top: var(--space-3);
}

/* Share bar */
.share-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-6) 0;
  margin: var(--space-8) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.share-bar__label {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-right: var(--space-2);
}

.share-bar__button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  color: var(--color-text-secondary);
}

.share-bar__button:hover {
  background: var(--color-accent-subtle);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.share-bar__button svg {
  width: 18px;
  height: 18px;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer-brand {}

.footer-brand__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.footer-brand__name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
}

.footer-brand__name span {
  color: var(--color-accent);
}

.footer-brand__desc {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.7;
  max-width: 300px;
  margin-bottom: var(--space-6);
}

.footer-social {
  display: flex;
  gap: var(--space-3);
}

.footer-social__link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.6);
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
}

.footer-social__link:hover {
  background: var(--color-accent);
  color: var(--color-primary);
}

.footer-social__link svg {
  width: 18px;
  height: 18px;
}

.footer-col__title {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--space-5);
  color: rgba(255, 255, 255, 0.9);
}

.footer-col__list {
  list-style: none;
}

.footer-col__list li {
  margin-bottom: var(--space-3);
}

.footer-col__list a {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--duration-fast) var(--ease-out);
}

.footer-col__list a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.35);
}

.footer-bottom__links {
  display: flex;
  gap: var(--space-6);
}

.footer-bottom__links a {
  color: rgba(255, 255, 255, 0.35);
}

.footer-bottom__links a:hover {
  color: var(--color-accent);
}

/* ============================================
   STATISTICS BAR
   ============================================ */
.stats-bar {
  background: var(--color-primary);
  padding: var(--space-10) 0;
}

.stats-bar__inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  text-align: center;
}

.stats-bar__item {}

.stats-bar__number {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stats-bar__label {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.55);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1200px) {
  .content-grid {
    grid-template-columns: 1fr 320px;
    gap: var(--space-8);
  }
}

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero-main {
    grid-column: 1 / -1;
    grid-row: auto;
    min-height: 400px;
  }

  .content-grid {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }

  .sidebar-widget {
    margin-bottom: 0;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 768px) {
  :root {
    --text-4xl: 1.875rem;
    --text-5xl: 2.25rem;
    --text-6xl: 2.75rem;
  }

  .menu-toggle {
    display: block;
  }

  .main-nav {
    display: none;
  }

  .main-nav.active {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    padding: var(--space-4);
    z-index: var(--z-dropdown);
  }

  .main-nav.active .main-nav__list {
    flex-direction: column;
    width: 100%;
  }

  .main-nav.active .main-nav__link {
    padding: var(--space-3) var(--space-4);
    width: 100%;
  }

  .header-search__input {
    display: none;
  }

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

  .hero-main__content {
    padding: var(--space-6);
  }

  .hero-main__title {
    font-size: var(--text-2xl);
  }

  .article-card {
    grid-template-columns: 1fr;
  }

  .article-card__content {
    padding: var(--space-5);
  }

  .sidebar {
    grid-template-columns: 1fr;
  }

  .stats-bar__inner {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }

  .single-article__title {
    font-size: var(--text-3xl);
  }

  .single-article__body {
    font-size: var(--text-base);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-4);
  }

  .hero-main {
    min-height: 300px;
  }

  .hero-secondary__image-wrap {
    height: 160px;
  }
}

/* ============================================
   LOADING & ANIMATION STATES
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

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

/* Skeleton loading */
.skeleton {
  background: linear-gradient(90deg,
    var(--color-border-light) 25%,
    var(--color-bg) 50%,
    var(--color-border-light) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
}

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

/* Print styles */
@media print {
  .site-header,
  .top-bar,
  .category-bar,
  .sidebar,
  .share-bar,
  .site-footer,
  .newsletter-widget {
    display: none !important;
  }

  .single-article {
    max-width: 100%;
    padding: 0;
  }

  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }
}

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

  html {
    scroll-behavior: auto;
  }
}

/* Dark mode support (future) */
@media (prefers-color-scheme: dark) {
  /* Reserve for future dark mode implementation */
}