/* Nitrogen.mytia.net - Modern Design System */
/* Performance-optimized, accessible, conversion-focused styles */

/* Import Design System Foundation */
@import 'system/variables.css';
@import 'system/typography.css';

/* Import Layout System */
@import 'layout/layout.css';

/* Import Components */
@import 'components/buttons.css';
@import 'components/cards.css';
@import 'components/footer.css';

/* Custom CSS Variables */
:root {
  /* Brand Colors */
  --color-primary: #1e40af;
  --color-primary-dark: #1e3a8a;
  --color-primary-light: #3b82f6;
  --color-secondary: #059669;
  --color-secondary-dark: #047857;
  --color-accent: #f59e0b;
  --color-danger: #dc2626;

  /* Nitrogen Brand Palette */
  --color-nitrogen-blue: #1e40af;
  --color-nitrogen-green: #059669;
  --color-nitrogen-gray: #6b7280;
  --color-nitrogen-white: #ffffff;
  --color-nitrogen-dark: #111827;

  /* Typography */
  --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
  --font-secondary: 'Inter', system-ui, -apple-system, sans-serif;

  /* Spacing */
  --spacing-unit: 0.25rem;

  /* 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), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;
}

/* Base Styles */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--color-nitrogen-dark);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography Enhancements */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-nitrogen-dark);
}

h1 {
  font-size: 2.5rem;
  line-height: 1.1;
}

h2 {
  font-size: 2rem;
  line-height: 1.15;
}

h3 {
  font-size: 1.5rem;
  line-height: 1.2;
}

/* Mobile typography */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  h3 {
    font-size: 1.25rem;
  }
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0.5rem;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  font-size: 1rem;
  line-height: 1.5;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: white;
}

.btn-secondary:hover {
  background-color: var(--color-secondary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: white;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* Conversion-Optimized Form Styles */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--color-nitrogen-dark);
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid #e5e7eb;
  border-radius: 0.5rem;
  font-size: 1rem;
  transition: border-color var(--transition-normal);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

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

/* Card Styles */
.card {
  background-color: white;
  border-radius: 0.75rem;
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: box-shadow var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card-header {
  padding: 1.5rem;
  border-bottom: 1px solid #e5e7eb;
}

.card-body {
  padding: 1.5rem;
}

.card-footer {
  padding: 1rem 1.5rem;
  background-color: #f9fafb;
  border-top: 1px solid #e5e7eb;
}

/* Stakeholder-Specific Styles */
.stakeholder-plant-manager {
  --color-stakeholder: var(--color-secondary);
}

.stakeholder-operations-director {
  --color-stakeholder: var(--color-primary);
}

.stakeholder-cfo {
  --color-stakeholder: var(--color-accent);
}

.stakeholder-maintenance-manager {
  --color-stakeholder: #7c3aed;
}

.stakeholder-indicator {
  width: 4px;
  background-color: var(--color-stakeholder);
}

/* Hero Section Styles */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: white;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><circle cx="200" cy="200" r="3" fill="rgba(255,255,255,0.1)"/><circle cx="800" cy="300" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="400" cy="700" r="2" fill="rgba(255,255,255,0.1)"/></svg>');
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px) translateX(0px); }
  25% { transform: translateY(-10px) translateX(5px); }
  50% { transform: translateY(-5px) translateX(-5px); }
  75% { transform: translateY(-15px) translateX(3px); }
}

/* Trust Indicators */
.trust-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  background-color: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
}

.trust-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-secondary);
  margin-right: 0.5rem;
}

/* Conversion Elements */
.conversion-highlight {
  background: linear-gradient(120deg, transparent 0%, var(--color-accent) 0%, var(--color-accent) 100%, transparent 100%);
  background-size: 200% 100%;
  background-position: 100% 0;
  transition: background-position 0.3s ease;
  padding: 0.125rem 0.25rem;
  border-radius: 0.25rem;
}

.conversion-highlight:hover {
  background-position: 0 0;
}

.urgency-indicator {
  position: relative;
  overflow: hidden;
}

.urgency-indicator::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* Interactive Elements */
.interactive-element {
  cursor: pointer;
  transition: all var(--transition-normal);
}

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

/* ROI Calculator Styles */
.calculator-container {
  background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
  border: 2px solid var(--color-primary-light);
  border-radius: 1rem;
  padding: 2rem;
}

.calculator-input {
  background-color: white;
  border: 2px solid #e0e7ff;
  border-radius: 0.5rem;
  padding: 0.75rem;
  font-size: 1.125rem;
  text-align: center;
}

.calculator-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.calculator-result {
  background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-dark));
  color: white;
  padding: 1.5rem;
  border-radius: 0.75rem;
  text-align: center;
}

.result-number {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 0.5rem;
}

/* FAQ Styles */
.faq-item {
  border: 1px solid #e5e7eb;
  border-radius: 0.5rem;
  margin-bottom: 1rem;
  overflow: hidden;
}

.faq-question {
  padding: 1.25rem;
  cursor: pointer;
  background-color: white;
  transition: background-color var(--transition-normal);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: between;
}

.faq-question:hover {
  background-color: #f9fafb;
}

.faq-answer {
  padding: 0 1.25rem 1.25rem;
  background-color: #f9fafb;
  display: none;
}

.faq-answer.active {
  display: block;
  animation: fadeInDown 0.3s ease;
}

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

.faq-icon {
  transition: transform var(--transition-normal);
  margin-left: auto;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

/* Loading States */
.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid #f3f4f6;
  border-radius: 50%;
  border-top-color: var(--color-primary);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

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

.focus\:not-sr-only:focus {
  position: static;
  width: auto;
  height: auto;
  padding: inherit;
  margin: inherit;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* Skip to content link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--color-primary);
  color: white;
  padding: 8px;
  text-decoration: none;
  border-radius: 4px;
  z-index: 1000;
}

.skip-link:focus {
  top: 6px;
}

/* Focus indicators */
button:focus,
input:focus,
textarea:focus,
select:focus,
a:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-primary: #000080;
    --color-secondary: #008000;
    --color-nitrogen-gray: #000000;
  }

  .card {
    border: 2px solid #000000;
  }

  .btn-outline {
    border-width: 3px;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .hero::before {
    animation: none;
  }

  .urgency-indicator::before {
    animation: none;
  }
}

/* Dark mode support (future enhancement) */
@media (prefers-color-scheme: dark) {
  :root {
    --color-nitrogen-dark: #ffffff;
    --color-nitrogen-white: #111827;
  }

  body {
    background-color: #111827;
    color: #ffffff;
  }

  .card {
    background-color: #1f2937;
    border-color: #374151;
  }
}

/* Print styles */
@media print {
  .no-print,
  #tia-chat-widget,
  #tia-chat-trigger,
  .floating-cta,
  .stakeholder-selector {
    display: none !important;
  }

  .hero {
    background: white !important;
    color: black !important;
  }

  .btn {
    border: 2px solid #000000 !important;
    background: transparent !important;
    color: #000000 !important;
  }
}

/* Performance optimizations */
.will-change-transform {
  will-change: transform;
}

.will-change-auto {
  will-change: auto;
}

.contain-layout {
  contain: layout;
}

.contain-paint {
  contain: paint;
}

/* Container queries support (future enhancement) */
.card-container {
  container-type: inline-size;
}

@container (min-width: 400px) {
  .card {
    padding: 2rem;
  }
}

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

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: var(--color-nitrogen-gray);
  border-radius: 4px;
}

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