/* ===================================
   DESIGN SYSTEM - SGQ OTI
   =================================== */

:root {
  /* Colors - Premium Palette */
  --color-primary: #3b82f6;
  --color-primary-dark: #2563eb;
  --color-secondary: #a855f7;
  --color-accent: #ec4899;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-purple-pink: linear-gradient(135deg, #a855f7 0%, #ec4899 100%);
  --gradient-blue-purple: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --gradient-pink-rose: linear-gradient(135deg, #ec4899 0%, #f43f5e 100%);
  
  /* Dark Theme */
  --bg-dark-primary: #0a0a0f;
  --bg-dark-secondary: #13131a;
  --bg-dark-tertiary: #1a1a24;
  --bg-glass: rgba(255, 255, 255, 0.05);
  --bg-glass-hover: rgba(255, 255, 255, 0.1);
  
  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #e5e7eb;
  --text-muted: #9ca3af;
  --text-dark: #1f2937;
  
  /* Borders */
  --border-color: rgba(255, 255, 255, 0.1);
  --border-color-hover: rgba(255, 255, 255, 0.2);
  
  /* 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-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(167, 139, 250, 0.3);
  --shadow-glow-pink: 0 0 20px rgba(236, 72, 153, 0.3);
  --shadow-glow-blue: 0 0 20px rgba(59, 130, 246, 0.3);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

/* ===================================
   RESET & BASE STYLES
   =================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-dark-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

.font-outfit {
  font-family: 'Outfit', sans-serif;
}

.font-inter {
  font-family: 'Inter', sans-serif;
}

/* ===================================
   TYPOGRAPHY
   =================================== */

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

.section-title {
  font-size: 3rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1rem;
  font-family: 'Outfit', sans-serif;
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .section-title {
    font-size: 2rem;
  }
  
  .section-subtitle {
    font-size: 1rem;
  }
}

/* ===================================
   NAVIGATION
   =================================== */

#navbar {
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

#navbar.scrolled {
  background: rgba(10, 10, 15, 0.95);
  box-shadow: var(--shadow-lg);
}

.logo-container {
  width: 40px;
  height: 40px;
  background: var(--gradient-blue-purple);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: var(--shadow-glow);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-purple-pink);
  transition: width var(--transition-base);
}

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

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

.mobile-menu {
  background: var(--bg-dark-secondary);
  border-top: 1px solid var(--border-color);
  animation: slideDown var(--transition-base);
}

.mobile-nav-link {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover {
  background: var(--bg-glass);
  color: var(--text-primary);
}

/* ===================================
   BUTTONS
   =================================== */

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--gradient-purple-pink);
  color: white;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-glow-pink);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #ec4899 0%, #a855f7 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(236, 72, 153, 0.5);
}

.btn-primary > * {
  position: relative;
  z-index: 1;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--bg-glass);
  color: white;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-color-hover);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

/* ===================================
   HERO SECTION
   =================================== */

.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-gradient {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at top, rgba(167, 139, 250, 0.15) 0%, transparent 50%),
              radial-gradient(ellipse at bottom right, rgba(236, 72, 153, 0.15) 0%, transparent 50%),
              radial-gradient(ellipse at bottom left, rgba(59, 130, 246, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.badge-premium {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  backdrop-filter: blur(10px);
}

.stat-card {
  text-align: center;
  padding: 1rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
}

.stat-card:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-color-hover);
  transform: translateY(-4px);
}

.floating-card {
  animation: float 6s ease-in-out infinite;
}

.glass-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-2xl);
}

.icon-container-lg {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: var(--shadow-glow);
}

.icon-container {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: var(--shadow-md);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--gradient-purple-pink);
  border-radius: var(--radius-full);
  animation: progressFill 1.5s ease-out;
}

.floating-element {
  position: absolute;
  animation: float 8s ease-in-out infinite;
  pointer-events: none;
}

/* ===================================
   SECTIONS
   =================================== */

.section-padding {
  padding: 6rem 0;
}

@media (max-width: 768px) {
  .section-padding {
    padding: 4rem 0;
  }
}

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

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

/* ===================================
   MODULE CARDS
   =================================== */

.module-category-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: 2rem;
  backdrop-filter: blur(20px);
  transition: all var(--transition-base);
}

.module-category-card:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-color-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-2xl);
}

.module-item {
  display: flex;
  align-items: start;
  gap: 1rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.module-item:hover {
  background: rgba(255, 255, 255, 0.06);
  transform: translateX(4px);
}

/* ===================================
   BENEFIT CARDS
   =================================== */

.benefit-card {
  position: relative;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: 2rem;
  backdrop-filter: blur(20px);
  transition: all var(--transition-base);
  overflow: hidden;
}

.benefit-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-purple-pink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

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

.benefit-card:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-color-hover);
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
}

.benefit-number {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 40px;
  height: 40px;
  background: var(--gradient-purple-pink);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.25rem;
  color: white;
  box-shadow: var(--shadow-glow-pink);
}

/* ===================================
   ROI SECTION
   =================================== */

.roi-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: 2rem;
  backdrop-filter: blur(20px);
  transition: all var(--transition-base);
}

.roi-card:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-xl);
}

.impact-timeline {
  position: relative;
  padding-left: 2rem;
}

.impact-timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gradient-purple-pink);
}

.timeline-item {
  position: relative;
  margin-bottom: 3rem;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-badge {
  position: absolute;
  left: -2.75rem;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: var(--shadow-glow);
  border: 3px solid var(--bg-dark-secondary);
}

.timeline-content {
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
}

.timeline-content:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-color-hover);
  transform: translateX(8px);
}

/* ===================================
   PRICING CARDS
   =================================== */

.pricing-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  backdrop-filter: blur(20px);
  transition: all var(--transition-base);
  position: relative;
}

.pricing-card:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-color-hover);
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
}

.pricing-card-featured {
  border: 2px solid;
  border-image: var(--gradient-purple-pink) 1;
  box-shadow: var(--shadow-glow-pink);
}

.pricing-card-featured:hover {
  box-shadow: 0 0 40px rgba(236, 72, 153, 0.4);
}

.pricing-header {
  padding: 2rem;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.pricing-body {
  padding: 2rem;
}

/* ===================================
   FORMS
   =================================== */

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-input {
  width: 100%;
  padding: 0.875rem 1.25rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-secondary);
  background: var(--bg-glass-hover);
  box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.1);
}

.form-input::placeholder {
  color: var(--text-muted);
}

select.form-input {
  cursor: pointer;
}

textarea.form-input {
  resize: vertical;
  min-height: 120px;
}

/* ===================================
   ANIMATIONS
   =================================== */

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

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes progressFill {
  from {
    width: 0;
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.8s ease-out;
}

.animate-fade-in-right {
  animation: fadeInRight 0.8s ease-out 0.2s both;
}

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

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ===================================
   RESPONSIVE UTILITIES
   =================================== */

@media (max-width: 768px) {
  .hero-section {
    padding-top: 80px;
  }
  
  .stat-card {
    padding: 0.75rem;
  }
  
  .module-category-card,
  .benefit-card,
  .roi-card,
  .pricing-card {
    padding: 1.5rem;
  }
  
  .icon-container-lg {
    width: 48px;
    height: 48px;
  }
  
  .impact-timeline {
    padding-left: 1.5rem;
  }
  
  .timeline-badge {
    left: -2.25rem;
    width: 40px;
    height: 40px;
  }
}

/* ===================================
   SCROLLBAR STYLING
   =================================== */

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-dark-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--gradient-purple-pink);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gradient-blue-purple);
}

/* ===================================
   ACCESSIBILITY
   =================================== */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Focus styles for keyboard navigation */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

/* ===================================
   PRINT STYLES
   =================================== */

@media print {
  .no-print {
    display: none !important;
  }
}