/* ==========================================================================
   FortiEraser - Professional Secure Erasure Software
   Modern Dark Theme with Tech Accents
   ========================================================================== */

/* CSS Variables - Design System */
:root {
  /* Colors - Dark Theme First */
  --page-bg: #05080A;
  --surface-bg: #101418;
  --text-primary: #E4E4E7;
  --text-secondary: #A1A1AA;
  --border-subtle: #27272A;
  
  /* Accent Colors */
  --accent-cyan: #00FFFF;
  --accent-green: #08FFB4;
  --accent-warning: #FBBF24;
  --accent-error: #F87171;
  
  /* Semantic Colors */
  --success: #08FFB4;
  --warning: #FBBF24;
  --error: #F87171;
  
  /* Typography */
  --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
  
  /* Spacing System (8px base) */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-xxl: 64px;
  --space-xxxl: 96px;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* Shadows/Glows */
  --shadow-glow-sm: 0 0 8px rgba(0, 255, 255, 0.15);
  --shadow-glow-md: 0 0 16px rgba(0, 255, 255, 0.15);
  --shadow-glow-lg: 0 0 32px rgba(0, 255, 255, 0.25);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background-color: var(--page-bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Container System */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Language Selector - Posicionamiento mejorado */
.language-selector {
  position: fixed;
  top: var(--space-lg);
  right: var(--space-xxl); /* Aumentado significativamente */
  z-index: 1001; /* Mayor z-index */
  display: flex;
  gap: var(--space-xs);
  background: var(--surface-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-xs);
  box-shadow: var(--shadow-glow-md);
  min-width: 120px; /* Ancho mínimo para evitar compresión */
  justify-content: center;
  backdrop-filter: blur(10px);
}

/* Mobile responsiveness for language selector */
@media (max-width: 768px) {
  .language-selector {
    top: var(--space-md);
    right: var(--space-md);
  }
}

.lang-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  transition: all var(--transition-fast);
  font-family: var(--font-primary);
}

.lang-btn:hover {
  color: var(--accent-cyan);
  background: rgba(0, 255, 255, 0.1);
}

.lang-btn.active {
  background: var(--accent-cyan);
  color: var(--page-bg);
  box-shadow: var(--shadow-glow-sm);
}

/* Header con z-index mejorado */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(5, 8, 10, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
  transition: all var(--transition-smooth);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  padding: 0 var(--space-lg);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo {
  width: 60px;
  height: 60px;
  border-radius: 8px;
  object-fit: contain;
  transition: all var(--transition-fast);
  filter: drop-shadow(0 0 8px rgba(0, 255, 255, 0.1));
}

.logo:hover {
  transform: scale(1.05);
  filter: drop-shadow(0 0 12px rgba(0, 255, 255, 0.2));
}

.brand-text {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
}

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

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: all var(--transition-fast);
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-cyan);
  transition: width var(--transition-fast);
}

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

/* Navigation CTA mejorado */
.nav-cta {
  display: flex;
  align-items: center;
  margin-left: var(--space-lg);
  min-width: 180px; /* Espacio mínimo para el botón */
  justify-content: flex-end;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  border: none;
  border-radius: 6px;
  font-family: var(--font-primary);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  background: var(--accent-cyan);
  color: var(--page-bg);
  box-shadow: 0 0 16px rgba(0, 255, 255, 0.2);
}

.cta-button:hover {
  background: #33FFFF;
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 4px 20px rgba(0, 255, 255, 0.3);
}

.cta-button:active {
  transform: translateY(0) scale(0.98);
}

/* Mobile responsiveness for navigation */
@media (max-width: 1024px) {
  .nav-menu {
    gap: var(--space-lg);
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .nav-cta {
    display: none; /* Hide CTA button on mobile */
  }
}

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}

.mobile-menu-toggle span {
  width: 25px;
  height: 2px;
  background: var(--text-primary);
  margin: 3px 0;
  transition: var(--transition-fast);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-primary);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--accent-cyan);
  color: var(--page-bg);
}

.btn-primary:hover {
  background: #33FFFF;
  transform: scale(1.05);
  box-shadow: var(--shadow-glow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--accent-cyan);
  border: 1px solid var(--accent-cyan);
}

.btn-secondary:hover {
  background: rgba(0, 255, 255, 0.1);
  box-shadow: var(--shadow-glow-md);
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: var(--shadow-glow-sm);
}

.btn-large {
  padding: var(--space-lg) var(--space-xl);
  font-size: 18px;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 80px;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, rgba(0, 255, 255, 0.1) 0%, transparent 70%);
}

.circuit-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(90deg, var(--border-subtle) 1px, transparent 1px),
    linear-gradient(var(--border-subtle) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.3;
  animation: circuitFlow 20s linear infinite;
}

.floating-elements {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
}

.element {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-cyan);
}

.element-1 {
  top: 20%;
  left: 10%;
  animation: float 6s ease-in-out infinite;
}

.element-2 {
  top: 60%;
  right: 20%;
  animation: float 8s ease-in-out infinite reverse;
}

.element-3 {
  bottom: 30%;
  left: 60%;
  animation: float 7s ease-in-out infinite;
}

.hero-content {
  text-align: center;
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-block;
  background: rgba(8, 255, 180, 0.1);
  border: 1px solid var(--accent-green);
  color: var(--accent-green);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-lg);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: var(--space-lg);
}

.hero-title {
  font-size: clamp(48px, 8vw, 72px);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
}

.title-main {
  display: block;
  color: var(--text-primary);
}

.title-accent {
  display: block;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 20px;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-features {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-secondary);
  font-size: 16px;
}

.feature-icon {
  width: 20px;
  height: 20px;
  color: var(--accent-green);
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-xxl);
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-xxl);
  flex-wrap: wrap;
}

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

.stat-number {
  display: block;
  font-size: 32px;
  font-weight: 700;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
}

.stat-label {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Section Styles */
section {
  padding: var(--space-xxxl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xxl);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 600;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

.section-description {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Features Section */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.feature-card {
  background: var(--surface-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: all var(--transition-smooth);
  position: relative;
}

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

.feature-icon-wrapper {
  margin-bottom: var(--space-lg);
}

.feature-icon-large {
  width: 64px;
  height: 64px;
  color: var(--accent-cyan);
}

.feature-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.feature-description {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.feature-specs {
  list-style: none;
}

.feature-specs li {
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
  font-size: 14px;
}

/* Algorithms Section */
.algorithms {
  background: linear-gradient(180deg, transparent 0%, rgba(0, 255, 255, 0.05) 100%);
}

.algorithms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-xxl);
}

.algorithm-card {
  background: var(--surface-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.algorithm-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-green));
  opacity: 0;
  transition: opacity var(--transition-smooth);
}

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

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

.algorithm-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.algorithm-icon {
  width: 48px;
  height: 48px;
  color: var(--accent-cyan);
}

.algorithm-badge {
  background: var(--accent-cyan);
  color: var(--page-bg);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
}

.algorithm-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
}

.algorithm-passes {
  color: var(--accent-green);
  font-weight: 600;
  font-size: 14px;
  margin-bottom: var(--space-md);
  font-family: var(--font-mono);
}

.algorithm-description {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

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

.feature-item-small {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-secondary);
  font-size: 14px;
}

/* Comparison Table */
.algorithms-comparison {
  background: var(--surface-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  margin-top: var(--space-xxl);
}

.comparison-title {
  font-size: 24px;
  font-weight: 600;
  text-align: center;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

.comparison-table {
  overflow-x: auto;
}

.comparison-table table {
  width: 100%;
  border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

.comparison-table th {
  background: var(--page-bg);
  color: var(--text-primary);
  font-weight: 600;
}

.comparison-table td {
  color: var(--text-secondary);
}

.security-level {
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
}

.security-level.medium {
  background: rgba(251, 191, 36, 0.2);
  color: var(--accent-warning);
}

.security-level.high {
  background: rgba(8, 255, 180, 0.2);
  color: var(--accent-green);
}

.security-level.maximum {
  background: rgba(0, 255, 255, 0.2);
  color: var(--accent-cyan);
}

/* Screenshots Section */
.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

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

.screenshot-placeholder {
  background: var(--surface-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  transition: all var(--transition-smooth);
}

.screenshot-placeholder:hover {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow-md);
}

.screenshot-mockup {
  width: 100%;
  height: auto;
  max-width: 400px;
  border-radius: var(--radius-sm);
}

.screenshot-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.screenshot-description {
  color: var(--text-secondary);
  font-size: 14px;
}

/* Pricing Section */
.pricing {
  background: linear-gradient(180deg, rgba(8, 255, 180, 0.05) 0%, transparent 100%);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-xxl);
}

.pricing-card {
  background: var(--surface-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  position: relative;
  transition: all var(--transition-smooth);
}

.pricing-card.featured {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow-lg);
  transform: scale(1.05);
}

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

.pricing-card.featured:hover {
  transform: scale(1.05) translateY(-4px);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-cyan);
  color: var(--page-bg);
  padding: var(--space-xs) var(--space-lg);
  border-radius: var(--radius-lg);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.pricing-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.pricing-tier {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

.pricing-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  margin-bottom: var(--space-sm);
}

.currency {
  font-size: 24px;
  color: var(--text-secondary);
}

.amount {
  font-size: 64px;
  font-weight: 700;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
}

.pricing-period {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.pricing-savings {
  background: rgba(8, 255, 180, 0.1);
  border: 1px solid var(--accent-green);
  color: var(--accent-green);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
}

.pricing-features ul {
  list-style: none;
  margin-bottom: var(--space-xl);
}

.pricing-features li {
  padding: var(--space-sm) 0;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
}

.pricing-features li:last-child {
  border-bottom: none;
}

/* Volume Table */
.pricing-volume-table {
  background: var(--surface-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
}

.table-title {
  font-size: 24px;
  font-weight: 600;
  text-align: center;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

.volume-table {
  overflow-x: auto;
  margin-bottom: var(--space-lg);
}

.volume-table table {
  width: 100%;
  border-collapse: collapse;
}

.volume-table th,
.volume-table td {
  padding: var(--space-md);
  text-align: center;
  border-bottom: 1px solid var(--border-subtle);
}

.volume-table th {
  background: var(--page-bg);
  color: var(--text-primary);
  font-weight: 600;
}

.volume-table td {
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.highlight-row {
  background: rgba(0, 255, 255, 0.1);
}

.pricing-note {
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
  font-style: italic;
}

/* Contact Section */
.contact {
  background: var(--surface-bg);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xxl);
  align-items: start;
}

.contact-title {
  font-size: 36px;
  font-weight: 600;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

.contact-description {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  line-height: 1.6;
}

.contact-methods {
  margin-bottom: var(--space-xl);
}

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
  padding: var(--space-lg);
  background: var(--page-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-smooth);
}

.contact-method:hover {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow-sm);
}

.contact-icon {
  width: 48px;
  height: 48px;
  color: var(--accent-cyan);
  background: rgba(0, 255, 255, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-details h4 {
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.contact-details a {
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 500;
}

.contact-details a:hover {
  text-decoration: underline;
}

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

.contact-features .feature-item {
  color: var(--text-secondary);
}

/* Contact Form */
.contact-form-container {
  background: var(--page-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
}

.form-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: var(--space-xl);
  color: var(--text-primary);
  text-align: center;
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--space-md);
  background: var(--surface-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 16px;
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow-sm);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* Footer */
.footer {
  background: var(--surface-bg);
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-xxl) 0 var(--space-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xxl);
  margin-bottom: var(--space-xl);
}

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

.footer-logo {
  width: 32px;
  height: 32px;
}

.footer-brand-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.footer-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.social-link {
  width: 40px;
  height: 40px;
  background: var(--page-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.social-link:hover {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow-sm);
}

.footer-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

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

.footer-copyright {
  color: var(--text-secondary);
  font-size: 14px;
}

.footer-certifications {
  display: flex;
  gap: var(--space-md);
}

.cert-badge {
  background: rgba(0, 255, 255, 0.1);
  border: 1px solid var(--accent-cyan);
  color: var(--accent-cyan);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
}

/* Animations */
@keyframes circuitFlow {
  0% { transform: translate(0, 0); }
  100% { transform: translate(50px, 50px); }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-features {
    flex-direction: column;
    align-items: center;
  }
  
  .hero-stats {
    gap: var(--space-lg);
  }
  
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  
  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }
  
  .nav-menu {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .language-selector {
    top: var(--space-md);
    right: var(--space-md);
  }
  
  .hero {
    padding-top: 100px;
    min-height: 90vh;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .btn-large {
    width: 100%;
    max-width: 300px;
  }
  
  .features-grid,
  .algorithms-grid,
  .screenshots-grid {
    grid-template-columns: 1fr;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  .pricing-card.featured {
    transform: none;
  }
  
  .pricing-card.featured:hover {
    transform: translateY(-4px);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-lg);
    text-align: center;
  }
}

@media (max-width: 480px) {
  :root {
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-xxl: 48px;
    --space-xxxl: 64px;
  }
  
  .hero-title {
    font-size: 36px;
  }
  
  .section-title {
    font-size: 28px;
  }
  
  .amount {
    font-size: 48px;
  }
  
  .contact-title {
    font-size: 28px;
  }
}

/* Documentation Links */
.documentation-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--surface-bg);
  border: 1px solid var(--accent-cyan);
  border-radius: var(--radius-sm);
  color: var(--accent-cyan);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition-fast);
  margin-top: var(--space-md);
}

.documentation-link:hover {
  background: var(--accent-cyan);
  color: var(--bg-primary);
  box-shadow: var(--shadow-glow-sm);
  transform: translateY(-1px);
}

.documentation-link svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.algorithm-card .documentation-link {
  width: 100%;
  justify-content: center;
  margin-top: var(--space-lg);
}

@media (max-width: 768px) {
  .documentation-link {
    font-size: 13px;
    padding: var(--space-xs) var(--space-sm);
  }
}

/* Screenshot Images */
.screenshot-image {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--surface-bg);
  transition: all var(--transition-medium);
  z-index: 1;
}

.screenshot-image:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow-md);
}

.screenshot-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
  opacity: 1;
  transition: opacity 0.3s ease;
}

.screenshot-img:hover {
  opacity: 0.95;
}

/* Fix for screenshot visibility issues */
.screenshots-grid {
  position: relative;
  z-index: 2;
}

.screenshot-item {
  position: relative;
  z-index: 3;
}