/* CSS Variables */
:root {
  /* Colors */
  --color-primary: #ff0000;
  --color-primary-dark: #cc0000;
  --color-primary-darker: #990000;
  --color-bg-dark: #0a0a0a;
  --color-bg-medium: #111111;
  --color-bg-light: #1a1a1a;
  --color-text: #ffffff;
  --color-text-muted: #cccccc;
  --color-text-dim: #aaa;
  --color-text-dimmer: #999999;
  --color-text-dimmest: #888888;
  --color-text-footer: #666666;
  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-focus: #ff0000;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --spacing-2xl: 5rem;
  --spacing-3xl: 8rem;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  --font-size-base: 16px;
  --font-size-small: 0.95rem;
  --font-size-medium: 1.1rem;
  --font-size-large: 1.2rem;
  --font-size-xl: 1.3rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.8rem;
  --font-size-4xl: 2rem;
  --font-size-5xl: 2.5rem;
  --font-size-6xl: 3rem;
  --font-size-7xl: 4rem;
  
  /* Font Weights */
  --font-weight-normal: 400;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-black: 900;
  
  /* Line Heights */
  --line-height-tight: 1.2;
  --line-height-normal: 1.6;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.6s ease;
  
  /* Border Radius */
  --radius-small: 4px;
  --radius-medium: 10px;
  --radius-large: 20px;
  --radius-full: 50px;
  
  /* Shadows */
  --shadow-small: 0 10px 30px rgba(255, 0, 0, 0.3);
  --shadow-medium: 0 15px 40px rgba(255, 0, 0, 0.4);
  --shadow-large: 0 20px 40px rgba(0, 0, 0, 0.3);
  
  /* Breakpoints (for reference in media queries) */
  --bp-mobile: 768px;
  --bp-tablet: 1024px;
}

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

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-bg-light) 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(220, 38, 127, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 0, 0, 0.1) 0%, transparent 50%);
  animation: pulse 8s ease-in-out infinite alternate;
}

@keyframes pulse {
  0% { opacity: 0.3; }
  100% { opacity: 0.7; }
}

.hero-content {
  text-align: center;
  z-index: 2;
  position: relative;
  max-width: 1000px;
  padding: 0 var(--spacing-md);
}

.logo {
  font-size: var(--font-size-7xl);
  font-weight: var(--font-weight-black);
  margin-bottom: var(--spacing-lg);
  letter-spacing: -2px;
  opacity: 0;
  animation: fadeInUp 1.2s ease-out 0.5s forwards;
}

.logo .s {
  color: var(--color-primary);
}

.hero-headline {
  font-size: var(--font-size-6xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-md);
  opacity: 0;
  animation: fadeInUp 1.2s ease-out 0.8s forwards;
  line-height: var(--line-height-tight);
}

.hero-headline .highlight {
  color: var(--color-primary);
}

.hero-description {
  font-size: var(--font-size-xl);
  color: var(--color-text-muted);
  max-width: 800px;
  margin: 0 auto var(--spacing-lg);
  opacity: 0;
  animation: fadeInUp 1.2s ease-out 1.1s forwards;
  line-height: var(--line-height-normal);
}

.cta-button {
  display: inline-block;
  padding: 1.2rem var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  text-decoration: none;
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-medium);
  transition: all var(--transition-normal);
  opacity: 0;
  animation: fadeInUp 1.2s ease-out 1.4s forwards;
  box-shadow: var(--shadow-small);
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-medium);
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary-darker));
}

/* Products Section */
.products {
  padding: var(--spacing-3xl) var(--spacing-md);
  background: var(--color-bg-medium);
  position: relative;
}

.products::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, #333333, transparent);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  text-align: center;
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--color-text), var(--color-text-muted));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-dim);
  font-size: var(--font-size-large);
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.product-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  padding: var(--spacing-lg) var(--spacing-md);
  text-align: center;
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.product-card:hover {
  transform: translateY(-10px);
  border-color: rgba(255, 0, 0, 0.3);
  box-shadow: var(--shadow-large);
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-dark));
}

.product-icon {
  font-size: var(--font-size-7xl);
  margin-bottom: var(--spacing-md);
  display: block;
}

.product-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.product-description {
  color: var(--color-text-muted);
  line-height: var(--line-height-normal);
  margin-bottom: var(--spacing-md);
}

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

.product-features li {
  color: var(--color-text-dimmer);
  margin-bottom: var(--spacing-xs);
  font-size: var(--font-size-small);
}

.product-features li::before {
  content: '✓';
  color: var(--color-primary);
  margin-right: var(--spacing-xs);
  font-weight: bold;
}

/* Benefits Section */
.benefits {
  padding: var(--spacing-3xl) var(--spacing-md);
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-bg-light) 100%);
}

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

.benefit-card {
  text-align: center;
  padding: var(--spacing-md);
}

.benefit-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  font-size: var(--font-size-4xl);
}

.benefit-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
}

.benefit-description {
  color: var(--color-text-muted);
  line-height: var(--line-height-normal);
}

/* Process Section */
.process {
  padding: var(--spacing-3xl) var(--spacing-md);
  background: var(--color-bg-medium);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.process-step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
}

.step-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
}

.step-description {
  color: var(--color-text-muted);
  line-height: var(--line-height-normal);
}

/* Contact Section */
.contact {
  padding: var(--spacing-3xl) var(--spacing-md);
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-bg-light) 100%);
  text-align: center;
}

.contact h2 {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--color-text), var(--color-text-muted));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.contact p {
  color: var(--color-text-muted);
  font-size: var(--font-size-large);
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.contact-form {
  max-width: 500px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--spacing-md);
  text-align: left;
}

.form-group label {
  display: block;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
  font-weight: var(--font-weight-semibold);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  color: white;
  font-size: var(--font-size-base);
  transition: all var(--transition-normal);
  font-family: var(--font-family);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-border-focus);
  background: rgba(255, 255, 255, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-dimmest);
}

.form-group input[aria-invalid="true"],
.form-group textarea[aria-invalid="true"] {
  border-color: var(--color-primary);
}

.error-message {
  display: block;
  color: var(--color-primary);
  font-size: var(--font-size-small);
  margin-top: var(--spacing-xs);
}

.success-message {
  background: rgba(0, 255, 136, 0.1);
  border: 1px solid rgba(0, 255, 136, 0.3);
  color: #00ff88;
  padding: var(--spacing-sm);
  border-radius: var(--radius-medium);
  margin-top: var(--spacing-md);
  font-weight: var(--font-weight-semibold);
}

.submit-btn {
  width: 100%;
  padding: var(--spacing-sm);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  border: none;
  border-radius: var(--radius-medium);
  font-size: var(--font-size-medium);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.submit-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-small);
}

.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Footer */
.footer {
  padding: var(--spacing-lg) var(--spacing-md);
  background: var(--color-bg-dark);
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.footer p {
  color: var(--color-text-footer);
}

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

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: #333333;
  border-radius: var(--radius-small);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* Responsive - Mobile */
@media (max-width: 768px) {
  .logo {
    font-size: var(--font-size-5xl);
  }

  .hero-headline {
    font-size: var(--font-size-4xl);
  }

  .hero-description {
    font-size: var(--font-size-medium);
  }

  .section-title {
    font-size: var(--font-size-4xl);
  }

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

/* Responsive - Tablet */
@media (min-width: 769px) and (max-width: 1024px) {
  .products-grid,
  .benefits-grid,
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-headline {
    font-size: 2.5rem;
  }

  .logo {
    font-size: 3.5rem;
  }
}