/* ==========================================================================
   Image2Vid Studio™ — Design System & Stylesheet
   Specialized for AI Video Synthesis, Creator Tech & Hardware Benchmarks
   ========================================================================== */

:root {
  --bg-primary: #080c14;
  --bg-surface: #0f172a;
  --bg-surface-hover: #1e293b;
  --bg-surface-elevated: #162036;
  --bg-glass: rgba(15, 23, 42, 0.75);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.16);
  --border-focus: rgba(34, 211, 238, 0.45);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;
  --text-inverse: #040810;
  
  --cyan-primary: #06b6d4;
  --cyan-light: #22d3ee;
  --cyan-dark: #0891b2;
  --cyan-glow: rgba(34, 211, 238, 0.25);
  
  --indigo-primary: #6366f1;
  --indigo-light: #818cf8;
  --indigo-dark: #4f46e5;
  
  --emerald-primary: #10b981;
  --emerald-light: #34d399;
  
  --amber-primary: #f59e0b;
  --amber-light: #fbbf24;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter", "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.5);
  --shadow-cyan: 0 0 25px rgba(6, 182, 212, 0.2);
  
  --max-width: 1240px;
}

*, *::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;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Background Cyber Grid */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.15) 0%, transparent 60%),
    radial-gradient(circle at 90% 40%, rgba(6, 182, 212, 0.1) 0%, transparent 50%),
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 48px 48px, 48px 48px;
  pointer-events: none;
  z-index: -1;
}

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

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

/* ==========================================================================
   Header & Compliance Top Bar
   ========================================================================== */

.ftc-banner {
  background: rgba(15, 23, 42, 0.95);
  border-bottom: 1px solid var(--border-subtle);
  padding: 6px 16px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-align: center;
  position: relative;
  z-index: 100;
}

.ftc-banner a {
  color: var(--cyan-light);
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: var(--bg-glass);
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.3s ease;
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.logo-badge {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--cyan-primary), var(--indigo-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px var(--cyan-glow);
}

.logo-badge svg {
  width: 20px;
  height: 20px;
  fill: #fff;
}

.logo-text {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.logo-text .brand-name {
  color: #fff;
  font-weight: 800;
}

.logo-text .brand-tld {
  color: var(--cyan-light);
  font-size: 0.9rem;
  font-weight: 700;
}

.logo-tag {
  font-size: 0.65rem;
  text-transform: uppercase;
  background: rgba(34, 211, 238, 0.12);
  color: var(--cyan-light);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(34, 211, 238, 0.25);
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-left: 6px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s ease;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: #fff;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan-primary), var(--indigo-primary));
  border-radius: var(--radius-full);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-subtle);
  color: #fff;
  padding: 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* ==========================================================================
   Buttons & UI Elements
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.65rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan-primary), var(--indigo-primary));
  color: #fff;
  box-shadow: 0 4px 14px rgba(6, 182, 212, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.45);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-medium);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-cyan {
  background: rgba(6, 182, 212, 0.1);
  border-color: rgba(6, 182, 212, 0.3);
  color: var(--cyan-light);
}

.btn-cyan:hover {
  background: rgba(6, 182, 212, 0.2);
  border-color: var(--cyan-light);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-cyan {
  background: rgba(6, 182, 212, 0.12);
  color: var(--cyan-light);
  border: 1px solid rgba(6, 182, 212, 0.25);
}

.badge-indigo {
  background: rgba(99, 102, 241, 0.12);
  color: var(--indigo-light);
  border: 1px solid rgba(99, 102, 241, 0.25);
}

.badge-emerald {
  background: rgba(16, 185, 129, 0.12);
  color: var(--emerald-light);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.badge-amber {
  background: rgba(245, 158, 11, 0.12);
  color: var(--amber-light);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  padding: 4.5rem 1.5rem 3.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
  position: relative;
}

.hero-pill {
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.hero-gradient {
  background: linear-gradient(135deg, #fff 20%, var(--cyan-light) 60%, var(--indigo-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto 2.25rem;
  line-height: 1.7;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  max-width: 960px;
  margin: 2.5rem auto 0;
}

.hero-stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1rem;
  text-align: center;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.hero-stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-medium);
}

.hero-stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: #fff;
  font-family: var(--font-mono);
  margin-bottom: 0.25rem;
}

.hero-stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ==========================================================================
   Section Layouts
   ========================================================================== */

.section {
  padding: 3.5rem 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1rem;
}

.section-title {
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* ==========================================================================
   Grid & Review Cards
   ========================================================================== */

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.review-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.25s ease;
  position: relative;
}

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

.card-media {
  position: relative;
  aspect-ratio: 16/9;
  background: #090e17;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border-subtle);
}

.card-media-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.review-card:hover .card-media-bg {
  transform: scale(1.04);
}

.card-badge-overlay {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
}

.card-score-overlay {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--cyan-light);
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.card-score-overlay span {
  font-size: 0.7rem;
  color: var(--text-tertiary);
}

.card-content {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-bottom: 0.75rem;
}

.card-meta-category {
  color: var(--cyan-light);
  font-weight: 600;
  text-transform: uppercase;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.35;
  margin-bottom: 0.75rem;
  transition: color 0.2s ease;
}

.review-card:hover .card-title {
  color: var(--cyan-light);
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex: 1;
}

.card-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 1.25rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-subtle);
}

.spec-pill {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  background: rgba(255, 255, 255, 0.04);
  color: #cbd5e1;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem;
}

.card-author {
  display: flex;
  align-items: center;
  gap: 8px;
}

.author-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--indigo-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  color: #fff;
}

.card-read-more {
  color: var(--cyan-light);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s ease;
}

.review-card:hover .card-read-more {
  gap: 8px;
}

/* ==========================================================================
   Benchmark Table
   ========================================================================== */

.benchmark-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.benchmark-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.875rem;
}

.benchmark-table th {
  background: rgba(255, 255, 255, 0.03);
  padding: 1rem 1.25rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
  border-bottom: 1px solid var(--border-subtle);
}

.benchmark-table td {
  padding: 1.15rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  color: #cbd5e1;
}

.benchmark-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.model-name-cell {
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
}

.score-badge {
  font-family: var(--font-mono);
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  display: inline-block;
}

.score-high {
  background: rgba(16, 185, 129, 0.15);
  color: var(--emerald-light);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.score-mid {
  background: rgba(6, 182, 212, 0.15);
  color: var(--cyan-light);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

/* ==========================================================================
   Lab Methodology Bento
   ========================================================================== */

.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.bento-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.bento-card:hover {
  border-color: var(--border-medium);
}

.bento-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--cyan-light);
}

.bento-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.bento-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Article Detail Page
   ========================================================================== */

.article-header {
  padding: 3.5rem 1.5rem 2.5rem;
  max-width: 900px;
  margin: 0 auto;
}

.article-breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-bottom: 1.5rem;
}

.article-breadcrumbs a {
  color: var(--text-secondary);
}

.article-breadcrumbs a:hover {
  color: var(--cyan-light);
}

.article-title {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  color: #fff;
}

.article-lead {
  font-size: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.75rem;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding: 1.25rem 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 2.5rem;
}

.author-block {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--bg-surface-elevated);
  border: 2px solid var(--cyan-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
}

.author-info-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: #fff;
}

.author-info-title {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.article-body {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
  font-size: 1.05rem;
  line-height: 1.8;
  color: #cbd5e1;
}

.article-body h2 {
  font-size: 1.85rem;
  font-weight: 800;
  color: #fff;
  margin: 2.5rem 0 1rem;
  letter-spacing: -0.02em;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.article-body h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  margin: 2rem 0 0.75rem;
}

.article-body p {
  margin-bottom: 1.5rem;
}

.article-body ul, .article-body ol {
  margin: 0 0 1.5rem 1.5rem;
}

.article-body li {
  margin-bottom: 0.5rem;
}

.verdict-box {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.08), rgba(99, 102, 241, 0.08));
  border: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin: 2.5rem 0;
}

.verdict-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 1rem;
}

.verdict-score {
  font-size: 2.25rem;
  font-weight: 900;
  font-family: var(--font-mono);
  color: var(--cyan-light);
}

.pros-cons-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 1.5rem 0;
}

.pros-box, .cons-box {
  background: rgba(0, 0, 0, 0.25);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.pros-box { border-left: 3px solid var(--emerald-primary); }
.cons-box { border-left: 3px solid #f43f5e; }

.pros-title { color: var(--emerald-light); font-weight: 700; margin-bottom: 0.75rem; }
.cons-title { color: #fb7185; font-weight: 700; margin-bottom: 0.75rem; }

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background: #04070e;
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 1.5rem 2rem;
  margin-top: 4rem;
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-top: 1rem;
  max-width: 340px;
}

.footer-col-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #fff;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--cyan-light);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.footer-legal-copy {
  line-height: 1.6;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media (max-width: 1024px) {
  .reviews-grid { grid-template-columns: repeat(2, 1fr); }
  .bento-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 768px) {
  .hero-title { font-size: 2.25rem; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid { grid-template-columns: 1fr; }
  .bento-grid { grid-template-columns: 1fr; }
  .pros-cons-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .mobile-toggle { display: block; }
  .footer-grid { grid-template-columns: 1fr; }
}