/* ===================================
   2026 PREMIUM DESIGN
   Inspired by: copy.ai, linear.app, stripe.com, vercel.com, framer.com
   =================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  /* Premium Color Palette */
  --color-background: #FAFAFA;
  --color-surface: #FFFFFF;
  --color-elevated: #FFFFFF;
  
  /* Text Colors - Sophisticated */
  --color-text-primary: #0F172A;
  --color-text-secondary: #475569;
  --color-text-tertiary: #94A3B8;
  
  /* Brand Colors - Sophisticated Blues & Purples */
  --color-primary: #3B82F6;
  --color-primary-light: #60A5FA;
  --color-primary-dark: #2563EB;
  --color-accent: #8B5CF6;
  --color-accent-light: #A78BFA;
  
  /* Semantic Colors */
  --color-success: #10B981;
  --color-error: #EF4444;
  --color-warning: #F59E0B;
  
  /* Borders - Ultra Subtle */
  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;
  
  /* Premium Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.02);
  --shadow-sm: 0 2px 4px 0 rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 12px 24px -4px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 24px 48px -12px rgba(0, 0, 0, 0.12);
  
  /* Border Radius - Modern */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  
  /* Transitions - Smooth */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Spacing System */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 8rem;
  
  /* Layout */
  --max-width: 1280px;
  --content-width: 1024px;
}

/* ===================================
   Modern Reset
   =================================== */

*, *::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: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-text-primary);
  background: var(--color-background);
  font-feature-settings: 'kern', 'liga', 'calt';
}

/* ===================================
   Premium Typography System
   =================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-text-primary);
  letter-spacing: -0.04em;
  font-feature-settings: 'kern', 'liga';
}

h1 {
  font-size: clamp(3.5rem, 9vw, 7rem);
  margin-bottom: var(--space-xl);
  font-weight: 800;
  line-height: 1.05;
}

h2 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-top: var(--space-4xl);
  margin-bottom: var(--space-xl);
  font-weight: 700;
}

h3 {
  font-size: clamp(1.875rem, 4vw, 2.5rem);
  margin-top: var(--space-3xl);
  margin-bottom: var(--space-lg);
  font-weight: 600;
}

h4 {
  font-size: 1.5rem;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  font-weight: 600;
}

p {
  margin-bottom: var(--space-lg);
  color: var(--color-text-secondary);
  font-size: 1.0625rem;
  line-height: 1.8;
}

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

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

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

/* ===================================
   Premium Navigation
   =================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
}

.site-nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-2xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-primary) !important;
  letter-spacing: -0.02em;
  transition: opacity var(--transition-fast);
}

.site-logo:hover {
  opacity: 0.7;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-xs);
  align-items: center;
}

.nav-menu li {
  margin: 0;
}

.nav-menu a {
  display: inline-block;
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.9375rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-menu a:hover {
  color: var(--color-text-primary);
  background: var(--color-surface);
}

/* ===================================
   Main Layout
   =================================== */

main {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-2xl);
}

/* ===================================
   HERO SECTION - Ultra Premium
   =================================== */

.hero {
  text-align: center;
  padding: var(--space-4xl) var(--space-2xl) var(--space-4xl);
  margin: calc(var(--space-3xl) * -1) calc(var(--space-2xl) * -1) var(--space-4xl);
  background: linear-gradient(180deg, #FAFAFA 0%, #FFFFFF 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 0%, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero h1 {
  position: relative;
  font-size: clamp(3.5rem, 9vw, 7rem);
  margin-bottom: var(--space-xl);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.045em;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 50%, #EC4899 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-flow 8s ease infinite;
}

@keyframes gradient-flow {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-description {
  position: relative;
  font-size: clamp(1.25rem, 3vw, 1.875rem);
  color: var(--color-text-secondary);
  max-width: 800px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.6;
  font-weight: 400;
}

/* ===================================
   Premium Buttons
   =================================== */

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--color-primary);
  color: #FFFFFF !important;
  padding: 1.125rem 2.25rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1.0625rem;
  text-decoration: none !important;
  box-shadow: 0 4px 12px -2px rgba(59, 130, 246, 0.25);
  transition: all var(--transition-base);
  border: none;
  position: relative;
  overflow: hidden;
}

.cta-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.1) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.cta-button:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -4px rgba(59, 130, 246, 0.35);
}

.cta-button:hover::before {
  opacity: 1;
}

.cta-button::after {
  content: '→';
  font-size: 1.25rem;
  transition: transform var(--transition-base);
}

.cta-button:hover::after {
  transform: translateX(4px);
}

/* ===================================
   Affiliate Disclosure
   =================================== */

.affiliate-disclosure-banner {
  background: linear-gradient(135deg, #FEF3C7 0%, #FDE68A 100%);
  border-left: 3px solid var(--color-warning);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-3xl);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.affiliate-disclosure-banner p {
  margin: 0;
  font-size: 0.9375rem;
  color: #92400E;
  line-height: 1.6;
}

/* ===================================
   Premium Card System
   =================================== */

.featured-reviews {
  margin: var(--space-4xl) 0;
}

.featured-reviews h2 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  text-align: center;
  margin-bottom: var(--space-3xl);
  font-weight: 700;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: var(--space-2xl);
  max-width: var(--max-width);
  margin: 0 auto;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.card:hover {
  transform: translateY(-8px);
  border-color: var(--color-border);
  box-shadow: var(--shadow-xl);
}

.card:hover::before {
  transform: scaleX(1);
}

.card-logo {
  width: 72px;
  height: 72px;
  object-fit: contain;
  margin-bottom: var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  padding: var(--space-sm);
  background: linear-gradient(135deg, #FAFAFA 0%, #FFFFFF 100%);
  transition: transform var(--transition-base);
}

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

.card h3 {
  font-size: 1.5rem;
  margin: 0 0 var(--space-md) 0;
  line-height: 1.3;
  font-weight: 600;
}

.card h3 a {
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

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

.card p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.card .rating {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-warning);
  font-weight: 600;
  font-size: 1.125rem;
  margin: 0;
}

/* ===================================
   Review Page Components
   =================================== */

.review-header {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-3xl);
  margin-bottom: var(--space-4xl);
  box-shadow: var(--shadow-md);
}

.tool-meta {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.tool-logo {
  width: 112px;
  height: 112px;
  object-fit: contain;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: var(--space-md);
  background: linear-gradient(135deg, #FAFAFA 0%, #FFFFFF 100%);
  box-shadow: var(--shadow-sm);
}

.review-rating {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.rating-stars {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 2rem;
  color: var(--color-warning);
  font-weight: 700;
}

.testing-period {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* ===================================
   Table of Contents
   =================================== */

.toc {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin: var(--space-3xl) 0;
}

.toc h2 {
  font-size: 1.5rem;
  margin: 0 0 var(--space-lg) 0;
  font-weight: 600;
}

.toc ul {
  list-style: none;
  margin-left: 0;
  margin-bottom: 0;
}

.toc li {
  margin-bottom: var(--space-sm);
  padding-left: var(--space-lg);
  position: relative;
}

.toc li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-text-tertiary);
  transition: all var(--transition-fast);
}

.toc a {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

.toc li:hover::before {
  color: var(--color-primary);
  transform: translateX(4px);
}

/* ===================================
   Pros/Cons - Premium Design
   =================================== */

.review-summary {
  margin: var(--space-4xl) 0;
}

.review-summary h2 {
  font-size: 2.75rem;
  margin-bottom: var(--space-3xl);
  text-align: center;
  font-weight: 700;
}

.pros-cons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-3xl);
}

.pros, .cons {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  position: relative;
}

.pros::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-success);
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.cons::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-error);
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.pros:hover, .cons:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.pros h3 {
  color: var(--color-success);
  font-size: 1.625rem;
  margin: 0 0 var(--space-lg) 0;
  font-weight: 600;
}

.cons h3 {
  color: var(--color-error);
  font-size: 1.625rem;
  margin: 0 0 var(--space-lg) 0;
  font-weight: 600;
}

.pros ul, .cons ul {
  list-style: none;
  margin-left: 0;
  margin-bottom: 0;
}

.pros li, .cons li {
  padding-left: var(--space-xl);
  position: relative;
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.pros li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: 700;
  font-size: 1.5rem;
}

.cons li::before {
  content: '✗';
  position: absolute;
  left: 0;
  color: var(--color-error);
  font-weight: 700;
  font-size: 1.5rem;
}

/* ===================================
   Pricing Table - Premium
   =================================== */

.pricing-table {
  margin: var(--space-4xl) 0;
}

.pricing-table h2 {
  font-size: 2.75rem;
  margin-bottom: var(--space-3xl);
  text-align: center;
  font-weight: 700;
}

.pricing-table table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.pricing-table thead {
  background: linear-gradient(135deg, #FAFAFA 0%, #F3F4F6 100%);
}

.pricing-table th {
  padding: var(--space-lg) var(--space-xl);
  text-align: left;
  color: var(--color-text-primary);
  font-weight: 600;
  font-size: 1rem;
  border-bottom: 2px solid var(--color-border);
}

.pricing-table td {
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text-secondary);
}

.pricing-table tbody tr:last-child td {
  border-bottom: none;
}

.pricing-table tbody tr {
  transition: background var(--transition-fast);
}

.pricing-table tbody tr:hover {
  background: var(--color-background);
}

/* ===================================
   Affiliate CTA - Premium
   =================================== */

.affiliate-cta {
  background: linear-gradient(135deg, #FAFAFA 0%, #F3F4F6 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-3xl) var(--space-2xl);
  margin: var(--space-4xl) 0;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.affiliate-cta h3 {
  color: var(--color-text-primary);
  font-size: 2.25rem;
  margin: 0 0 var(--space-xl) 0;
  font-weight: 700;
}

.cta-disclaimer {
  color: var(--color-text-tertiary);
  font-size: 0.875rem;
  margin-top: var(--space-lg);
  margin-bottom: 0;
}

/* ===================================
   Recent Posts
   =================================== */

.recent-posts {
  margin: var(--space-4xl) 0;
}

.recent-posts h2 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-bottom: var(--space-3xl);
  text-align: center;
  font-weight: 700;
}

.posts-list {
  list-style: none;
  margin-left: 0;
}

.posts-list li {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all var(--transition-base);
}

.posts-list li:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateX(8px);
}

.posts-list a {
  color: var(--color-text-primary);
  font-weight: 500;
  font-size: 1.0625rem;
  flex: 1;
  transition: color var(--transition-fast);
}

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

.post-date {
  color: var(--color-text-tertiary);
  font-size: 0.875rem;
  white-space: nowrap;
  margin-left: var(--space-lg);
  font-weight: 500;
}

/* ===================================
   Footer - Clean & Professional
   =================================== */

.site-footer {
  background: linear-gradient(180deg, #FFFFFF 0%, #FAFAFA 100%);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  padding: var(--space-4xl) var(--space-2xl) var(--space-3xl);
  margin-top: var(--space-4xl);
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

.footer-content p {
  margin-bottom: var(--space-xl);
  font-size: 0.9375rem;
  color: var(--color-text-tertiary);
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

/* ===================================
   Content Styling
   =================================== */

.content {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.content h2 {
  margin-top: var(--space-4xl);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  font-weight: 600;
}

.content h3 {
  margin-top: var(--space-3xl);
  margin-bottom: var(--space-lg);
  font-weight: 600;
}

.content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  margin: var(--space-3xl) 0;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-4xl) 0;
}

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

.content li {
  margin-bottom: var(--space-sm);
  line-height: 1.8;
}

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 1024px) {
  :root {
    --space-4xl: 6rem;
  }

  .grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-xl);
  }
}

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }

  :root {
    --space-3xl: 4rem;
    --space-4xl: 5rem;
  }

  main {
    padding: var(--space-xl) var(--space-lg);
  }

  .site-nav {
    flex-direction: column;
    padding: var(--space-md) var(--space-lg);
    gap: var(--space-md);
  }

  .nav-menu {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero {
    padding: var(--space-3xl) var(--space-lg);
    margin: calc(var(--space-xl) * -1) calc(var(--space-lg) * -1) var(--space-3xl);
  }

  .pros-cons {
    grid-template-columns: 1fr;
  }

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

  .tool-meta {
    flex-direction: column;
    align-items: flex-start;
  }

  .review-rating {
    flex-direction: column;
    align-items: flex-start;
  }

  .posts-list li {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }

  .post-date {
    margin-left: 0;
  }

  .review-header {
    padding: var(--space-xl);
  }
}

@media (max-width: 480px) {
  .nav-menu {
    flex-direction: column;
    width: 100%;
  }

  .nav-menu a {
    width: 100%;
    text-align: center;
  }

  .footer-nav {
    flex-direction: column;
    gap: var(--space-md);
  }
}

/* ===================================
   Smooth Animations
   =================================== */

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card {
  animation: fade-in-up 0.6s ease-out;
  animation-fill-mode: backwards;
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }

/* ===================================
   Utility Classes
   =================================== */

.text-center {
  text-align: center;
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-flow 8s ease infinite;
}