:root {
  /* Red Palette - Based on Portal Theme */
  --red-50: #fef2f2;
  --red-100: #fee2e2;
  --red-200: #fecaca;
  --red-300: #fca5a5;
  --red-400: #f87171;
  --red-500: #ef4444;
  --red-600: #dc2626;
  --red-700: #b91c1c;
  --red-800: #991b1b;
  --red-900: #7f1d1d;
  --red-950: #450a0a;

  /* Neutral Colors */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --gray-950: #030712;
  
  /* Primary Colors */
  --primary: var(--red-600);
  --primary-dark: var(--red-700);
  --primary-light: var(--red-400);
  --primary-gradient: linear-gradient(135deg, var(--red-600) 0%, var(--red-500) 100%);
  
  /* Text Colors */
  --text-primary: var(--gray-900);
  --text-secondary: var(--gray-600);
  --text-light: var(--gray-500);
  
  /* Background */
  --bg-primary: #ffffff;
  --bg-secondary: var(--gray-50);
  --bg-dark: var(--gray-900);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-red: 0 10px 40px rgba(220, 38, 38, 0.15);
}

/* === Dark Mode === */
.dark {
  /* Text Colors - Dark Mode */
  --text-primary: var(--gray-100);
  --text-secondary: var(--gray-300);
  --text-light: var(--gray-400);
  
  /* Background - Dark Mode */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  
  /* Shadows - Dark Mode */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
  --shadow-red: 0 10px 40px rgba(220, 38, 38, 0.3);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* === Navbar === */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
}

.dark .navbar {
  background: rgba(15, 23, 42, 0.95);
  border-bottom: 1px solid var(--gray-700);
}

.navbar-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar-logo a {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  letter-spacing: -0.5px;
  transition: transform 0.2s ease;
}

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

.navbar-cta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.dark-mode-toggle {
  background: transparent;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-full);
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  color: var(--text-primary);
  padding: 0;
  margin: 0;
  position: relative;
}

.dark-mode-toggle:hover {
  background: var(--gray-100);
  border-color: var(--primary);
  transform: scale(1.05);
}

.dark .dark-mode-toggle {
  border-color: var(--gray-700);
}

.dark .dark-mode-toggle:hover {
  background: var(--gray-800);
  border-color: var(--primary);
}

.dark-mode-toggle svg {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.dark-mode-toggle:hover svg {
  transform: translate(-50%, -50%) rotate(20deg);
}

.icon-sun,
.icon-moon {
  display: block;
}

.btn-start {
  background: var(--primary-gradient);
  color: white;
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius-full);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9375rem;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

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

/* === Hero Section === */
.hero {
  position: relative;
  padding: var(--spacing-xl) var(--spacing-md) var(--spacing-lg);
  overflow: hidden;
  background: linear-gradient(180deg, var(--red-50) 0%, var(--bg-primary) 100%);
}

.dark .hero {
  background: linear-gradient(180deg, rgba(127, 29, 29, 0.1) 0%, var(--bg-primary) 100%);
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.05;
  background-image: 
    radial-gradient(circle at 20% 50%, var(--red-500) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, var(--red-400) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  animation: fadeInUp 0.8s ease;
}

.hero-badge {
  display: inline-block;
  background: var(--primary-gradient);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-red);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
  letter-spacing: -1px;
}

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

.hero-description {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  margin-bottom: var(--spacing-lg);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--primary-gradient);
  color: white;
  padding: 1rem 2rem;
  border-radius: var(--radius-lg);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.0625rem;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-lg);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl), var(--shadow-red);
}

.btn-primary svg {
  transition: transform 0.3s ease;
}

.btn-primary:hover svg {
  transform: translateX(4px);
}

.btn-large {
  padding: 1.25rem 2.5rem;
  font-size: 1.125rem;
}

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

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

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* === Sections === */
section {
  padding: var(--spacing-xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* === Features Section === */
.features {
  background: var(--bg-primary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.feature-card {
  background: var(--bg-primary);
  padding: var(--spacing-md);
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  transition: all 0.3s ease;
  text-align: center;
}

.dark .feature-card {
  border-color: var(--gray-700);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl), var(--shadow-red);
  border-color: var(--red-300);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
  filter: grayscale(0.2);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* === How it Works === */
.how-it-works {
  background: var(--bg-secondary);
}

.dark .how-it-works {
  background: var(--bg-secondary);
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.step-card {
  background: var(--bg-primary);
  padding: var(--spacing-md);
  border-radius: var(--radius-xl);
  text-align: center;
  position: relative;
  border: 2px solid var(--gray-200);
  transition: all 0.3s ease;
}

.dark .step-card {
  border-color: var(--gray-700);
}

.step-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.step-number {
  position: absolute;
  top: -1rem;
  left: 50%;
  transform: translateX(-50%);
  width: 2.5rem;
  height: 2.5rem;
  background: var(--primary-gradient);
  color: white;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.125rem;
  box-shadow: var(--shadow-md);
}

.step-icon {
  font-size: 3.5rem;
  margin: var(--spacing-md) 0 var(--spacing-sm);
}

.step-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.step-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* === Pricing Section === */
.pricing {
  background: var(--bg-primary);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.pricing-card {
  background: var(--bg-primary);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: var(--spacing-md);
  position: relative;
  transition: all 0.3s ease;
}

.dark .pricing-card {
  border-color: var(--gray-700);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
  border-color: var(--primary);
  background: linear-gradient(180deg, var(--red-50) 0%, var(--bg-primary) 100%);
  transform: scale(1.05);
}

.dark .pricing-card.featured {
  background: linear-gradient(180deg, rgba(127, 29, 29, 0.2) 0%, var(--bg-primary) 100%);
}

.pricing-card.featured:hover {
  transform: scale(1.08);
}

.pricing-badge {
  position: absolute;
  top: -1rem;
  right: var(--spacing-md);
  background: var(--primary-gradient);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 700;
  box-shadow: var(--shadow-md);
}

.pricing-header {
  text-align: center;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--gray-200);
}

.dark .pricing-header {
  border-bottom-color: var(--gray-700);
}

.pricing-card.featured .pricing-header {
  border-bottom-color: var(--red-200);
}

.dark .pricing-card.featured .pricing-header {
  border-bottom-color: var(--red-800);
}

.pricing-header h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.pricing-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.old-price {
  font-size: 1rem;
  color: var(--text-light);
  text-decoration: line-through;
  margin-right: 0.5rem;
}

.dark .old-price {
  color: var(--gray-500);
}

.price-amount {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.price-period {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.pricing-features {
  list-style: none;
  margin-bottom: var(--spacing-md);
}

.pricing-features li {
  display: flex;
  align-items: center;
  padding: var(--spacing-xs) 0;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.check-icon, .cross-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  margin-right: var(--spacing-xs);
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.75rem;
}

.check-icon {
  background: var(--red-100);
  color: var(--red-700);
}

.cross-icon {
  background: var(--gray-200);
  color: var(--gray-500);
}

.dark .cross-icon {
  background: var(--gray-700);
  color: var(--gray-400);
}

.pricing-btn {
  display: block;
  width: 100%;
  text-align: center;
  background: var(--primary-gradient);
  color: white;
  padding: 0.875rem 1.5rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

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

.featured-btn {
  background: var(--primary-gradient);
  box-shadow: var(--shadow-lg);
}

.featured-btn:hover {
  box-shadow: var(--shadow-xl), var(--shadow-red);
}

/* === CTA Section === */
.cta-section {
  background: var(--primary-gradient);
  color: white;
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
}

.cta-content h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: white;
}

.cta-content p {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.95;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section .btn-primary {
  background: white;
  color: var(--primary);
  box-shadow: var(--shadow-xl);
}

.cta-section .btn-primary:hover {
  background: var(--red-50);
  transform: translateY(-2px);
}

/* === About Section === */
.about {
  background: var(--bg-secondary);
}

.dark .about {
  background: var(--bg-secondary);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--spacing-lg);
  align-items: center;
}

.about-text h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.8;
}

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

.about-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  margin-top: var(--spacing-sm);
  transition: all 0.3s ease;
}

.about-link:hover {
  gap: 0.75rem;
  color: var(--primary-dark);
}

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

.about-logo img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  transition: transform 0.3s ease;
}

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

/* === Footer === */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: var(--spacing-md) 0;
  text-align: center;
}

.dark .footer {
  background: var(--gray-950);
  color: var(--gray-300);
}

.footer-content p {
  font-size: 0.875rem;
}

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

/* === Responsive === */
@media (max-width: 768px) {
  .navbar-container {
    padding: var(--spacing-sm);
  }

  .hero {
    padding: var(--spacing-lg) var(--spacing-sm);
  }

  .hero-stats {
    gap: var(--spacing-md);
  }

  .features-grid,
  .steps,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .pricing-card.featured {
    transform: scale(1);
  }

  .about-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .about-logo {
    order: -1;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

  section {
    padding: var(--spacing-lg) 0;
  }
}

@media (max-width: 480px) {
  .btn-start {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
  }

  .btn-primary {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
  }
}