/* =====================================================
   NeoBriefing — Ultra-Modern Tech Article Publishing Site
   Design System & Component Styles
   ===================================================== */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ── CSS Custom Properties ── */
:root {
  /* Colors — Dark Obsidian Theme */
  --bg-primary: #06060b;
  --bg-secondary: #0c0c14;
  --bg-surface: #11111b;
  --bg-elevated: #16162a;
  --bg-card: rgba(255, 255, 255, 0.02);
  --bg-card-hover: rgba(255, 255, 255, 0.05);

  /* Accent Gradients */
  --accent-cyan: #00d4ff;
  --accent-violet: #7b2ff7;
  --accent-magenta: #f72fff;
  --accent-emerald: #00ffa3;
  --gradient-primary: linear-gradient(135deg, #00d4ff, #7b2ff7);
  --gradient-secondary: linear-gradient(135deg, #7b2ff7, #f72fff);
  --gradient-accent: linear-gradient(135deg, #00ffa3, #00d4ff);
  --gradient-warm: linear-gradient(135deg, #ff6b35, #f72fff);

  /* Text */
  --text-primary: #e8e8ed;
  --text-secondary: #8b8ba0;
  --text-tertiary: #55556a;
  --text-accent: #00d4ff;

  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-light: rgba(255, 255, 255, 0.1);
  --border-accent: rgba(0, 212, 255, 0.3);

  /* Glassmorphism */
  --glass-bg: rgba(17, 17, 27, 0.7);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-blur: 20px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
  --shadow-glow-cyan: 0 0 40px rgba(0, 212, 255, 0.15);
  --shadow-glow-violet: 0 0 40px rgba(123, 47, 247, 0.15);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 200ms;
  --duration-normal: 350ms;
  --duration-slow: 600ms;

  /* Layout */
  --max-width: 1280px;
  --max-width-article: 760px;
  --nav-height: 72px;
}

/* ── Reset & Base ── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  color: inherit;
}

::selection {
  background: rgba(0, 212, 255, 0.3);
  color: #fff;
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-elevated);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-cyan);
}

/* ── Background Ambient Effects ── */
.bg-ambient {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.bg-ambient::before {
  content: '';
  position: absolute;
  top: -20%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.06) 0%, transparent 70%);
  animation: ambientFloat1 20s ease-in-out infinite;
}

.bg-ambient::after {
  content: '';
  position: absolute;
  bottom: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(123, 47, 247, 0.05) 0%, transparent 70%);
  animation: ambientFloat2 25s ease-in-out infinite;
}

@keyframes ambientFloat1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(100px, 80px) scale(1.1); }
  66% { transform: translate(-50px, 120px) scale(0.9); }
}

@keyframes ambientFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-80px, -60px) scale(1.15); }
  66% { transform: translate(60px, -100px) scale(0.95); }
}

/* ── Container ── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  transition: all var(--duration-normal) var(--ease-out);
}

.nav::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(6, 6, 11, 0.6);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--duration-normal) var(--ease-out);
}

.nav.scrolled::before {
  background: rgba(6, 6, 11, 0.9);
  border-bottom-color: var(--border-light);
}

.nav-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.nav-logo-img {
  height: 140px;
  width: auto;
  object-fit: contain;
  filter: brightness(1.1);
  transition: filter var(--duration-fast) var(--ease-out);
}

.nav-logo:hover .nav-logo-img {
  filter: brightness(1.3);
}

.nav-logo-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.nav-logo-icon::after {
  content: '◆';
  font-size: 14px;
  color: #fff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width var(--duration-normal) var(--ease-out);
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link.active {
  color: var(--accent-cyan);
}

.nav-link.active::after {
  width: 100%;
}

.nav-search {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
}

.nav-search:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
}

.nav-search-icon {
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

.nav-search-text {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

.nav-search-shortcut {
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  padding: 2px 6px;
  background: var(--bg-elevated);
  border-radius: 4px;
  color: var(--text-tertiary);
}

.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.nav-mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-out);
}

/* ── Hero Section ── */
.hero {
  position: relative;
  padding-top: calc(var(--nav-height) + var(--space-4xl));
  padding-bottom: var(--space-4xl);
  overflow: hidden;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent-cyan);
  margin-bottom: var(--space-xl);
  animation: fadeInUp 0.8s var(--ease-out) 0.1s both;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-cyan);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  max-width: 900px;
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.8s var(--ease-out) 0.2s both;
}

.hero-title .gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.8;
  margin-bottom: var(--space-2xl);
  animation: fadeInUp 0.8s var(--ease-out) 0.3s both;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  animation: fadeInUp 0.8s var(--ease-out) 0.4s both;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 14px 28px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: var(--shadow-glow-cyan);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 60px rgba(0, 212, 255, 0.25);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.btn-ghost:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--border-light);
}

/* ── Featured Article ── */
.featured {
  position: relative;
  padding: var(--space-3xl) 0;
}

.featured-card {
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-3xl);
  padding: var(--space-2xl);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--duration-slow) var(--ease-out);
  cursor: pointer;
}

.featured-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.03), rgba(123, 47, 247, 0.03));
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease-out);
}

.featured-card:hover::before {
  opacity: 1;
}

.featured-card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-4px);
}

.featured-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.featured-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
  margin-bottom: var(--space-lg);
}

.featured-label svg {
  width: 14px;
  height: 14px;
}

.featured-title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.featured-excerpt {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
}

.featured-meta {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

.featured-meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.featured-image {
  position: relative;
  z-index: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16/10;
}

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

.featured-card:hover .featured-image img {
  transform: scale(1.05);
}

/* ── Section Headers ── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2xl);
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-title .count {
  color: var(--text-tertiary);
  font-weight: 400;
  font-size: 1rem;
  margin-left: var(--space-sm);
}

.section-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  transition: gap var(--duration-fast) var(--ease-out);
}

.section-link:hover {
  gap: var(--space-sm);
}

/* ── Category Pills ── */
.categories {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-2xl) 0 var(--space-md);
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.categories::-webkit-scrollbar {
  display: none;
}

.category-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 8px 20px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  white-space: nowrap;
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
}

.category-pill:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--border-light);
}

.category-pill.active {
  background: var(--gradient-primary);
  color: #fff;
  border-color: transparent;
  box-shadow: var(--shadow-glow-cyan);
}

/* ── Article Cards Grid ── */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  padding: var(--space-md) 0 var(--space-4xl);
}

.article-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
}

.article-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, transparent 50%, rgba(0, 212, 255, 0.02) 100%);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
  pointer-events: none;
}

.article-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow-cyan);
}

.article-card:hover::after {
  opacity: 1;
}

.article-card-image {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
}

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

.article-card:hover .article-card-image img {
  transform: scale(1.08);
}

.article-card-category {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  padding: 4px 12px;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #fff;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  z-index: 1;
}

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

.article-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-sm);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-excerpt {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--space-lg);
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  border-top: 1px solid var(--border-subtle);
}

.article-card-author {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.article-card-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6875rem;
  font-weight: 700;
  color: #fff;
}

.article-card-author-name {
  font-size: 0.8125rem;
  font-weight: 500;
}

.article-card-date {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.article-card-read-time {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ── Newsletter Section ── */
.newsletter {
  padding: var(--space-4xl) 0;
}

.newsletter-card {
  position: relative;
  padding: var(--space-3xl);
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(123, 47, 247, 0.05));
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  text-align: center;
  overflow: hidden;
}

.newsletter-card::before {
  content: '';
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.newsletter-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
  position: relative;
}

.newsletter-text {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto var(--space-xl);
  position: relative;
}

.newsletter-form {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  max-width: 480px;
  margin: 0 auto;
  position: relative;
}

.newsletter-input {
  flex: 1;
  padding: 14px 20px;
  font-size: 0.9rem;
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  outline: none;
  transition: all var(--duration-fast) var(--ease-out);
}

.newsletter-input::placeholder {
  color: var(--text-tertiary);
}

.newsletter-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

/* ── Footer ── */
.footer {
  padding: var(--space-3xl) 0 0;
  border-top: 1px solid var(--border-subtle);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr 0.8fr;
  gap: var(--space-3xl);
  padding-bottom: var(--space-3xl);
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-col-brand {
  gap: var(--space-md);
}

.footer-col-title {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.footer-tagline {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  line-height: 1.6;
}

.footer-social {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-xs);
}

.footer-social-link {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}

.footer-social-link:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
  color: var(--accent-cyan);
}

.footer-brand {
  display: inline-block;
}

.footer-logo-img {
  height: 28px;
  width: auto;
  object-fit: contain;
  filter: brightness(1.1);
  transition: filter var(--duration-fast) var(--ease-out);
}

.footer-brand:hover .footer-logo-img {
  filter: brightness(1.3);
}

.footer-link {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
  line-height: 1.8;
}

.footer-link:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--border-subtle);
}

.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

/* ── Reading Progress Bar ── */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--gradient-primary);
  z-index: 1001;
  transition: width 50ms linear;
  box-shadow: 0 0 10px rgba(0, 212, 255, 0.4);
}

/* ── Article Page ── */
.article-hero {
  position: relative;
  height: 60vh;
  min-height: 400px;
  max-height: 600px;
  overflow: hidden;
  margin-top: var(--nav-height);
}

.article-hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--bg-primary) 0%, rgba(6, 6, 11, 0.5) 50%, rgba(6, 6, 11, 0.2) 100%);
}

.article-hero-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-3xl);
  max-width: var(--max-width);
  margin: 0 auto;
}

.article-hero-category {
  display: inline-flex;
  padding: 6px 16px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #fff;
  background: rgba(0, 212, 255, 0.2);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-lg);
}

.article-hero-title {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  max-width: 800px;
  margin-bottom: var(--space-lg);
}

.article-hero-meta {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.article-hero-meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* ── Article Content ── */
.article-content {
  max-width: var(--max-width-article);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-xl);
}

.article-content h2 {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-top: var(--space-3xl);
  margin-bottom: var(--space-lg);
  position: relative;
}

.article-content h2::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 8px;
  width: 4px;
  height: 24px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.article-content p {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.article-content strong {
  color: var(--text-primary);
  font-weight: 600;
}

.article-content a {
  color: var(--accent-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity var(--duration-fast) var(--ease-out);
}

.article-content a:hover {
  opacity: 0.8;
}

.article-content blockquote {
  margin: var(--space-2xl) 0;
  padding: var(--space-lg) var(--space-xl);
  background: rgba(0, 212, 255, 0.04);
  border-left: 3px solid var(--accent-cyan);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--text-secondary);
}

.article-content blockquote p {
  margin-bottom: 0;
}

.article-content ul,
.article-content ol {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-xl);
}

.article-content li {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  position: relative;
  list-style: none;
}

.article-content ul li::before {
  content: '→';
  position: absolute;
  left: -24px;
  color: var(--accent-cyan);
  font-weight: 600;
}

.article-content ol {
  counter-reset: article-counter;
}

.article-content ol li {
  counter-increment: article-counter;
}

.article-content ol li::before {
  content: counter(article-counter) '.';
  position: absolute;
  left: -28px;
  color: var(--accent-cyan);
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

/* Code blocks */
.article-content pre {
  margin: var(--space-xl) 0;
  padding: var(--space-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow-x: auto;
  position: relative;
}

.article-content pre::before {
  content: attr(data-lang);
  position: absolute;
  top: var(--space-sm);
  right: var(--space-md);
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.article-content code {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.7;
}

.article-content p code {
  padding: 2px 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  font-size: 0.8125rem;
  color: var(--accent-cyan);
}

/* Syntax Highlighting (minimal) */
.token-keyword { color: var(--accent-violet); }
.token-string { color: var(--accent-emerald); }
.token-comment { color: var(--text-tertiary); font-style: italic; }
.token-function { color: var(--accent-cyan); }
.token-number { color: #ff9f43; }
.token-operator { color: var(--accent-magenta); }

/* ── Author Bio ── */
.author-card {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  margin: var(--space-3xl) 0;
}

.author-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}

.author-info {
  flex: 1;
}

.author-name {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.author-bio {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Related Articles ── */
.related-section {
  padding: var(--space-3xl) 0 var(--space-4xl);
  border-top: 1px solid var(--border-subtle);
}

/* ── Scroll Reveal Animations ── */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all var(--duration-slow) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ── Search Modal ── */
.search-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}

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

.search-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.search-modal-content {
  position: relative;
  width: 100%;
  max-width: 600px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: translateY(-20px) scale(0.98);
  transition: transform var(--duration-normal) var(--ease-out);
}

.search-modal.active .search-modal-content {
  transform: translateY(0) scale(1);
}

.search-modal-input {
  width: 100%;
  padding: 20px 24px;
  font-size: 1.125rem;
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border-subtle);
  outline: none;
}

.search-modal-input::placeholder {
  color: var(--text-tertiary);
}

.search-results {
  max-height: 400px;
  overflow-y: auto;
  padding: var(--space-sm);
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  transition: background var(--duration-fast) var(--ease-out);
  cursor: pointer;
}

.search-result-item:hover {
  background: var(--bg-card-hover);
}

.search-result-category {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
  white-space: nowrap;
}

.search-result-title {
  font-size: 0.9375rem;
  font-weight: 500;
}

.search-empty {
  padding: var(--space-2xl);
  text-align: center;
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

/* ── Mobile Nav Overlay ── */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(6, 6, 11, 0.95);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xl);
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}

.mobile-nav.active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav .nav-link {
  font-size: 1.5rem;
  font-weight: 600;
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .featured-image {
    order: -1;
  }

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

@media (max-width: 768px) {
  :root {
    --nav-height: 60px;
  }

  .container {
    padding: 0 var(--space-md);
  }

  .nav-links {
    display: none;
  }

  .nav-search {
    display: none;
  }

  .nav-mobile-toggle {
    display: flex;
  }

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

  .hero-title {
    font-size: 2rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .newsletter-input,
  .newsletter-form .btn {
    width: 100%;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    text-align: center;
  }

  .footer-col-brand {
    align-items: center;
  }

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

  .footer-bottom-links {
    justify-content: center;
  }

  .article-hero {
    height: 40vh;
    min-height: 280px;
  }

  .article-hero-content {
    padding: var(--space-xl);
  }

  .article-content {
    padding: var(--space-xl) var(--space-md);
  }

  .article-content h2::before {
    display: none;
  }

  .author-card {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .featured-card {
    padding: var(--space-lg);
  }

  .categories {
    padding: var(--space-lg) 0 var(--space-sm);
  }
}

/* ── Legal & Policy Pages Custom Styling ── */
.legal-hero {
  position: relative;
  padding: 100px 0 50px;
  background: radial-gradient(circle at top left, rgba(0, 212, 255, 0.08), transparent 40%),
              radial-gradient(circle at bottom right, rgba(188, 19, 254, 0.08), transparent 40%);
  border-bottom: 1px solid var(--border-subtle);
  margin-top: var(--nav-height);
}

.legal-hero-title {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-sm);
}

.legal-hero-meta {
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

.legal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl) var(--space-xl);
  margin-bottom: var(--space-3xl);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* Form Styles for CCPA / Opt-Out & Contact */
.legal-form {
  margin-top: var(--space-xl);
  max-width: 600px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

@media (max-width: 576px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.form-group {
  margin-bottom: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.form-input,
.form-select,
.form-textarea {
  font-family: inherit;
  font-size: 0.9375rem;
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  transition: all var(--duration-fast) var(--ease-out);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.15);
}

.form-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: 0.875rem;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
}

.form-checkbox-label input {
  margin-top: 4px;
}

.form-success-state {
  display: none;
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
}

.form-success-state.active {
  display: block;
}

.form-success-icon {
  font-size: 3rem;
  color: var(--accent-cyan);
  margin-bottom: var(--space-md);
  animation: pulseGlow 2s infinite ease-in-out;
}

@keyframes pulseGlow {
  0%, 100% { filter: drop-shadow(0 0 5px rgba(0, 212, 255, 0.4)); }
  50% { filter: drop-shadow(0 0 15px rgba(0, 212, 255, 0.8)); }
}

/* Custom CSS Toggle Switch for Cookie Settings */
.cookie-category-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-xl);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.cookie-category-item:last-child {
  border-bottom: none;
}

.cookie-details h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin: 0 0 4px 0 !important;
}

.cookie-details h3::before {
  display: none !important;
}

.cookie-details p {
  font-size: 0.875rem !important;
  color: var(--text-tertiary) !important;
  margin: 0 !important;
  line-height: 1.5 !important;
}

.switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 26px;
  flex-shrink: 0;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-subtle);
  transition: .3s;
  border-radius: 34px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: var(--text-secondary);
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background: var(--gradient-primary);
  border-color: var(--accent-cyan);
}

input:checked + .slider:before {
  transform: translateX(24px);
  background-color: #fff;
}

input:disabled + .slider {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Toast Notification Styling */
.toast-notification {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 1002;
  background: var(--bg-card);
  border: 1px solid var(--accent-cyan);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.25);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--duration-normal) var(--ease-out);
  pointer-events: none;
}

.toast-notification.active {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}

.toast-success-icon {
  color: var(--accent-cyan);
  font-weight: bold;
}

.toast-message {
  font-size: 0.875rem;
  color: var(--text-primary);
  font-weight: 500;
}

/* FAQ Accordion Styling for Help Page */
.faq-search-wrapper {
  margin-bottom: var(--space-2xl);
}

.faq-search-input {
  width: 100%;
  max-width: 500px;
  font-size: 1rem;
  padding: 14px 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition: all var(--duration-fast) var(--ease-out);
}

.faq-search-input:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.15);
  background: rgba(255, 255, 255, 0.05);
}

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

.faq-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}

.faq-item:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--border-light);
}

.faq-item.active {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px var(--space-lg);
  cursor: pointer;
  user-select: none;
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--text-primary);
}

.faq-chevron {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  transition: transform var(--duration-normal) var(--ease-out);
}

.faq-item.active .faq-chevron {
  transform: rotate(180deg);
  color: var(--accent-cyan);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
  padding: 0 var(--space-lg);
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 var(--space-lg) 20px var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 0;
}