/**
 * FOX FUEL B2B WEBSITE - SITEWIDE PRODUCTION STYLESHEET
 *
 * Version: 1.0.0
 * Last Updated: December 2024
 *
 * This stylesheet provides unified design system implementation across:
 * - Homepage_PRODUCTION.html
 * - Services_Hub_PRODUCTION.html
 * - Bulk_Fuel_Delivery_PRODUCTION.html
 * - Fleet_Fueling_PRODUCTION.html
 * - Jobsite_Fueling_PRODUCTION.html
 * - Generator_Fueling_PRODUCTION.html
 *
 * Claude Skills Applied:
 * - Skill #11: Frontend Design Implementation
 * - Skill #14: Brand Guidelines Enforcement
 * - Skill #10: Accessibility Standards (WCAG 2.1 AA)
 * - Skill #29: CTA Styling & Conversion Logic
 * - Skill #23: UX Responsiveness & Interaction Hierarchy
 */

/* ========================================================================
   1. CSS CUSTOM PROPERTIES (DESIGN TOKENS) - Skill #14: Brand Guidelines
   ======================================================================== */

:root {
  /* Brand Colors - Fox Fuel Orange & Supporting Palette */
  --color-primary: #D2691E;              /* Fox Orange - primary brand color */
  --color-primary-hover: #C55A0F;        /* Darker orange for hover states */
  --color-primary-light: #FFE4CC;        /* Light orange for backgrounds */

  --color-secondary: #2E7D32;            /* Green - success, trust indicators */
  --color-secondary-hover: #1B5E20;

  --color-emergency: #C62828;            /* Red - emergency CTAs */
  --color-emergency-hover: #B71C1C;

  --color-warning: #F57C00;              /* Amber - coming soon badges */
  --color-info: #1976D2;                 /* Blue - informational elements */

  /* Neutral Colors */
  --color-gray-50: #FAFAFA;
  --color-gray-100: #F5F5F5;
  --color-gray-200: #EEEEEE;
  --color-gray-300: #E0E0E0;
  --color-gray-400: #BDBDBD;
  --color-gray-500: #9E9E9E;
  --color-gray-600: #757575;
  --color-gray-700: #616161;
  --color-gray-800: #424242;
  --color-gray-900: #212121;

  --color-black: #000000;
  --color-white: #FFFFFF;

  /* Semantic Colors */
  --color-text-primary: #333333;         /* Main body text */
  --color-text-secondary: #666666;       /* Secondary text */
  --color-text-muted: #999999;           /* Muted/disabled text */
  --color-text-inverse: #FFFFFF;         /* Text on dark backgrounds */

  --color-bg-primary: #FFFFFF;
  --color-bg-secondary: #F5F5F5;
  --color-bg-tertiary: #FAFAFA;

  --color-border: #E0E0E0;
  --color-border-light: #F0F0F0;

  /* Typography */
  --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-family-headings: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-family-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;

  --font-size-xs: 0.75rem;      /* 12px */
  --font-size-sm: 0.875rem;     /* 14px */
  --font-size-base: 1rem;       /* 16px */
  --font-size-lg: 1.125rem;     /* 18px */
  --font-size-xl: 1.25rem;      /* 20px */
  --font-size-2xl: 1.5rem;      /* 24px */
  --font-size-3xl: 1.875rem;    /* 30px */
  --font-size-4xl: 2.25rem;     /* 36px */
  --font-size-5xl: 3rem;        /* 48px */

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Spacing Scale (8px base unit) */
  --space-1: 0.25rem;    /* 4px */
  --space-2: 0.5rem;     /* 8px */
  --space-3: 0.75rem;    /* 12px */
  --space-4: 1rem;       /* 16px */
  --space-5: 1.25rem;    /* 20px */
  --space-6: 1.5rem;     /* 24px */
  --space-8: 2rem;       /* 32px */
  --space-10: 2.5rem;    /* 40px */
  --space-12: 3rem;      /* 48px */
  --space-16: 4rem;      /* 64px */
  --space-20: 5rem;      /* 80px */
  --space-24: 6rem;      /* 96px */

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --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), 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-base: 200ms ease;
  --transition-slow: 300ms ease;

  /* Breakpoints (Mobile-first) */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;

  /* Container Max-Width */
  --container-max-width: 1200px;
  --container-padding: 1rem;
}

/* ========================================================================
   2. RESET & BASE STYLES - Normalize across browsers
   ======================================================================== */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

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

/* ========================================================================
   3. TYPOGRAPHY - Skill #14: Brand Guidelines
   ======================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-headings);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-6);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
}

p {
  margin-bottom: var(--space-4);
}

.subheadline {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

.section-intro {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  max-width: 800px;
  margin: 0 auto var(--space-8);
  text-align: center;
}

strong {
  font-weight: var(--font-weight-semibold);
}

em {
  font-style: italic;
}

/* Links */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

a:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Lists */
ul, ol {
  margin-bottom: var(--space-4);
  padding-left: var(--space-6);
}

li {
  margin-bottom: var(--space-2);
}

/* Screen Reader Only - Skill #10: 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;
}

/* ========================================================================
   4. LAYOUT PRIMITIVES - Container & Grid Systems
   ======================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* Skip Link - Skill #10: Accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-2) var(--space-4);
  text-decoration: none;
  z-index: 10000;
  font-weight: var(--font-weight-semibold);
}

.skip-link:focus {
  top: 0;
  outline: 2px solid var(--color-white);
  outline-offset: -2px;
}

/* ========================================================================
   5. SITE HEADER & NAVIGATION
   ======================================================================== */

.site-header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border-light);
  padding: var(--space-4) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.header-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.logo img {
  height: 50px;
  width: auto;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: var(--space-6);
  margin: 0;
  padding: 0;
}

.main-nav a {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  padding: var(--space-2) 0;
  transition: color var(--transition-base);
}

.main-nav a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.main-nav a:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
}

.header-cta {
  display: flex;
  gap: var(--space-3);
}

/* ========================================================================
   6. HERO SECTIONS - Skill #23: UX Hierarchy
   ======================================================================== */

.hero {
  position: relative;
  padding: var(--space-16) 0;
  background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

.hero-homepage {
  padding: var(--space-20) 0;
}

.hero-content {
  max-width: 800px;
  margin-bottom: var(--space-8);
}

.hero h1 {
  font-size: var(--font-size-5xl);
  margin-bottom: var(--space-6);
  color: var(--color-text-primary);
}

.hero .subheadline {
  font-size: var(--font-size-xl);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.hero-value-props {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.value-prop {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
}

.value-prop .icon {
  font-size: var(--font-size-xl);
}

.hero-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.trust-indicators-inline {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-light);
}

.indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-1);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

/* ========================================================================
   7. BUTTONS & CTAs - Skill #29: Conversion Framework
   ======================================================================== */

/* Base Button Styles */
.btn-primary,
.btn-secondary,
.btn-tertiary,
.btn-emergency {
  display: inline-block;
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: 1.5;
  text-align: center;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

/* Button Sizes */
.btn-large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
}

.btn-small {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}

/* Primary Button (Fox Orange) */
.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-primary:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn-primary:active {
  transform: translateY(0);
}

/* Secondary Button (Outline) */
.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Tertiary Button (Text Link Style) */
.btn-tertiary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: transparent;
  padding: var(--space-2) var(--space-3);
  font-weight: var(--font-weight-medium);
}

.btn-tertiary:hover {
  background-color: var(--color-primary-light);
  text-decoration: none;
}

.btn-tertiary:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Emergency Button (Red) */
.btn-emergency {
  background-color: var(--color-emergency);
  color: var(--color-white);
  border-color: var(--color-emergency);
}

.btn-emergency:hover {
  background-color: var(--color-emergency-hover);
  border-color: var(--color-emergency-hover);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-emergency:focus {
  outline: 2px solid var(--color-emergency);
  outline-offset: 2px;
}

/* Compact Buttons (for sticky bar, header) */
.btn-primary-compact,
.btn-emergency-compact {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}

/* Disabled State */
.btn-disabled,
button:disabled,
a[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* CTA Button Groups */
.cta-button-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
  margin-bottom: var(--space-8);
}

/* ========================================================================
   8. STICKY CTA BAR - Skill #29: Persistent Conversion
   ======================================================================== */

.sticky-cta-bar {
  position: fixed;
  top: -100px;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  z-index: 1000;
  transition: top var(--transition-slow);
  padding: var(--space-3) 0;
}

.sticky-cta-bar.sticky-visible {
  top: 0;
}

.sticky-cta-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.sticky-cta-text {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
}

/* ========================================================================
   9. SERVICE & FEATURE CARDS - Skill #23: Component Hierarchy
   ======================================================================== */

/* Service Cards Grid */
.services-grid,
.feature-grid,
.industry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

/* Individual Service Card */
.service-card {
  position: relative;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

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

.service-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.service-card-content {
  padding: var(--space-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.service-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-3);
}

.service-card h3 a {
  color: var(--color-text-primary);
  text-decoration: none;
}

.service-card h3 a:hover {
  color: var(--color-primary);
}

.service-description {
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.service-features {
  list-style: none;
  padding: 0;
  margin-bottom: var(--space-4);
  flex: 1;
}

.service-features li {
  font-size: var(--font-size-sm);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border-light);
}

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

/* Service Badge (Available/Coming Soon) */
.service-badge {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background-color: var(--color-secondary);
  color: var(--color-white);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  z-index: 10;
}

.service-badge-coming-soon {
  background-color: var(--color-gray-600);
}

.service-coming-soon {
  opacity: 0.85;
}

/* Feature Cards */
.feature-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  transition: all var(--transition-base);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.feature-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-3);
  color: var(--color-text-primary);
}

.feature-card p {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
  margin-bottom: 0;
}

.feature-stat {
  display: inline-block;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-3);
}

/* Industry Cards */
.industry-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  transition: all var(--transition-base);
}

.industry-card:hover {
  background: var(--color-white);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.industry-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-3);
}

.industry-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  margin-top: var(--space-3);
}

.industry-link:hover {
  text-decoration: none;
  gap: var(--space-3);
}

/* ========================================================================
   10. SERVICE CLARIFICATION BLOCKS - Unique Component
   ======================================================================== */

.service-clarification-block {
  background-color: var(--color-gray-50);
  border-left: 4px solid var(--color-primary);
  padding: var(--space-8) var(--container-padding);
  margin: var(--space-12) 0;
}

.clarification-intro {
  max-width: 900px;
  margin: 0 auto var(--space-6);
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
}

.clarification-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.what-we-provide,
.what-we-dont-provide {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.what-we-provide h3 {
  color: var(--color-secondary);
  margin-bottom: var(--space-4);
}

.what-we-dont-provide h3 {
  color: var(--color-emergency);
  margin-bottom: var(--space-4);
}

.what-we-provide ul,
.what-we-dont-provide ul {
  list-style: none;
  padding: 0;
}

.what-we-provide li,
.what-we-dont-provide li {
  padding-left: var(--space-6);
  position: relative;
  margin-bottom: var(--space-3);
}

.what-we-provide li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-secondary);
  font-weight: var(--font-weight-bold);
}

.what-we-dont-provide li::before {
  content: "✗";
  position: absolute;
  left: 0;
  color: var(--color-emergency);
  font-weight: var(--font-weight-bold);
}

.emphasis {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
}

.inline-cta {
  text-align: center;
  margin-top: var(--space-8);
}

/* ========================================================================
   11. PROCESS STEPS - Ordered List Component
   ======================================================================== */

.how-it-works {
  padding: var(--space-12) 0;
  background-color: var(--color-white);
}

.process-steps {
  list-style: none;
  padding: 0;
  margin: var(--space-8) 0;
  counter-reset: step-counter;
}

.process-steps li {
  position: relative;
  padding-left: var(--space-16);
  margin-bottom: var(--space-10);
}

.process-steps li:last-child {
  margin-bottom: 0;
}

.step-number {
  position: absolute;
  left: 0;
  top: 0;
  width: 48px;
  height: 48px;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
}

.process-steps h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.process-steps p {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
}

/* ========================================================================
   12. COMPARISON TABLES - Skill #13: IA
   ======================================================================== */

.service-comparison {
  padding: var(--space-12) 0;
  background-color: var(--color-bg-secondary);
}

.table-responsive {
  overflow-x: auto;
  margin: var(--space-8) 0;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.comparison-table thead {
  background-color: var(--color-gray-100);
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

.comparison-table th {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

.comparison-table tbody tr:hover {
  background-color: var(--color-gray-50);
}

.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

/* Status Badges in Tables */
.status-badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-live {
  background-color: #E8F5E9;
  color: var(--color-secondary);
}

.status-coming-soon {
  background-color: var(--color-gray-100);
  color: var(--color-gray-600);
}

/* ========================================================================
   13. INDUSTRY PATHWAYS - Custom Component
   ======================================================================== */

.industry-pathways {
  padding: var(--space-12) 0;
  background-color: var(--color-white);
}

.pathways-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  margin: var(--space-8) 0;
}

.pathway-card {
  background: var(--color-bg-secondary);
  border: 2px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  transition: all var(--transition-base);
}

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

.pathway-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-4);
}

.pathway-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-3);
}

.pathway-services {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
  font-size: var(--font-size-sm);
}

.pathway-services strong {
  display: block;
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.pathways-cta {
  text-align: center;
  margin-top: var(--space-8);
}

/* ========================================================================
   14. CUSTOMER TESTIMONIALS - Social Proof
   ======================================================================== */

.customer-success,
.testimonial-banner {
  padding: var(--space-12) 0;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-white) 100%);
}

.testimonial,
.testimonial-featured {
  background: var(--color-white);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  margin: var(--space-8) 0;
  box-shadow: var(--shadow-md);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.testimonial p,
.testimonial-featured p {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.testimonial cite,
.testimonial-featured cite {
  display: block;
  font-style: normal;
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
}

.testimonial cite strong,
.testimonial-featured cite strong {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

.success-metrics,
.testimonial-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-6);
  margin: var(--space-8) 0;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.metric {
  text-align: center;
  padding: var(--space-4);
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.metric-value {
  display: block;
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.metric-label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.event-timeline {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  margin-top: var(--space-8);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.event-timeline h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-4);
}

.event-timeline ul {
  list-style: none;
  padding: 0;
}

.event-timeline li {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.event-timeline li:last-child {
  border-bottom: none;
  font-weight: var(--font-weight-semibold);
  color: var(--color-secondary);
}

/* ========================================================================
   15. FAQ ACCORDIONS - Skill #10: Accessibility
   ======================================================================== */

.faq {
  padding: var(--space-12) 0;
  background-color: var(--color-white);
}

.faq-list {
  max-width: 900px;
  margin: var(--space-8) auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) 0;
}

.faq-item:first-child {
  border-top: 1px solid var(--color-border);
}

.faq-item dt {
  margin: 0;
}

.faq-item button {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: var(--space-4);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  transition: color var(--transition-base);
}

.faq-item button:hover {
  color: var(--color-primary);
}

.faq-item button:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.faq-question {
  flex: 1;
}

.faq-icon {
  font-size: var(--font-size-2xl);
  color: var(--color-primary);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.faq-item button[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-item dd {
  padding: 0 var(--space-4) var(--space-6);
  margin: 0;
}

.faq-item dd p {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
}

/* ========================================================================
   16. TRUST & CREDIBILITY SECTIONS - Skill #26
   ======================================================================== */

.trust-credibility,
.why-fox-fuel {
  padding: var(--space-12) 0;
  background-color: var(--color-bg-secondary);
}

.trust-grid,
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-6);
  margin: var(--space-8) 0;
}

.trust-card,
.benefit-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.trust-card:hover,
.benefit-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.trust-icon,
.benefit-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-4);
}

.trust-stat {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  display: block;
  margin-bottom: var(--space-3);
  line-height: 1;
}

.trust-card h3,
.benefit-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-3);
}

.trust-card p,
.benefit-card p {
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-secondary);
}

/* ========================================================================
   17. FINAL CTA SECTIONS
   ======================================================================== */

.final-cta {
  padding: var(--space-16) 0;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-white) 100%);
  text-align: center;
}

.final-cta h2 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-6);
}

.final-cta p {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  max-width: 800px;
  margin: 0 auto var(--space-8);
}

.contact-info {
  margin: var(--space-8) 0;
  font-size: var(--font-size-lg);
}

.contact-info p {
  margin-bottom: var(--space-2);
}

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-8);
  margin-top: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border-light);
}

.badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  min-width: 120px;
}

.badge .stat-number {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.badge span:last-child {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

/* ========================================================================
   18. SITE FOOTER
   ======================================================================== */

.site-footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--space-12) 0 var(--space-6);
}

.footer-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.footer-brand {
  grid-column: 1 / -1;
}

.footer-brand img {
  height: 50px;
  width: auto;
  margin-bottom: var(--space-4);
  filter: brightness(0) invert(1);
}

.footer-tagline {
  color: var(--color-gray-400);
  font-size: var(--font-size-base);
}

.footer-nav h3 {
  color: var(--color-white);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-nav li {
  margin-bottom: var(--space-2);
}

.footer-nav a {
  color: var(--color-gray-300);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-base);
}

.footer-nav a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.footer-contact h3 {
  color: var(--color-white);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-3);
}

.footer-contact p {
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-2);
}

.footer-contact a {
  color: var(--color-gray-300);
  text-decoration: none;
}

.footer-contact a:hover {
  color: var(--color-primary);
}

.footer-social h3 {
  color: var(--color-white);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-3);
}

.social-links {
  display: flex;
  gap: var(--space-4);
  list-style: none;
  padding: 0;
  margin: 0;
}

.social-links a {
  color: var(--color-gray-300);
  font-size: var(--font-size-sm);
  transition: color var(--transition-base);
}

.social-links a:hover {
  color: var(--color-primary);
}

.footer-legal {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: var(--space-6) var(--container-padding) 0;
  border-top: 1px solid var(--color-gray-800);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.footer-legal a {
  color: var(--color-gray-400);
  text-decoration: none;
}

.footer-legal a:hover {
  color: var(--color-primary);
}

/* ========================================================================
   19. RESPONSIVE IMAGES - Skill #11: Frontend Implementation
   ======================================================================== */

.responsive-img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-md);
}

picture {
  display: block;
  margin-bottom: var(--space-6);
}

/* ========================================================================
   20. UTILITY CLASSES
   ======================================================================== */

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

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.mt-0 { margin-top: 0; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

/* ========================================================================
   21. RESPONSIVE BREAKPOINTS - Skill #23: Responsive UX
   ======================================================================== */

/* Tablet (768px and up) */
@media (min-width: 768px) {
  :root {
    --container-padding: 2rem;
  }

  .hero h1 {
    font-size: var(--font-size-5xl);
  }

  .services-grid,
  .feature-grid,
  .industry-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pathways-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .sticky-cta-container {
    flex-direction: row;
  }
}

/* Desktop (1024px and up) */
@media (min-width: 1024px) {
  .hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
  }

  .hero-content {
    margin-bottom: 0;
  }

  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .pathways-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .main-nav ul {
    gap: var(--space-8);
  }
}

/* Large Desktop (1280px and up) */
@media (min-width: 1280px) {
  .hero h1 {
    font-size: var(--font-size-5xl);
  }

  .services-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Mobile Adjustments (below 640px) */
@media (max-width: 640px) {
  .hero h1 {
    font-size: var(--font-size-3xl);
  }

  .hero .subheadline {
    font-size: var(--font-size-base);
  }

  .hero-cta-group {
    flex-direction: column;
  }

  .hero-cta-group .btn-primary,
  .hero-cta-group .btn-secondary {
    width: 100%;
  }

  .sticky-cta-container {
    flex-direction: column;
    gap: var(--space-2);
  }

  .sticky-cta-text {
    font-size: var(--font-size-sm);
  }

  .main-nav ul {
    flex-direction: column;
    gap: var(--space-2);
  }

  .services-grid,
  .feature-grid,
  .industry-grid,
  .pathways-grid {
    grid-template-columns: 1fr;
  }

  .cta-button-group {
    flex-direction: column;
  }

  .cta-button-group .btn-primary,
  .cta-button-group .btn-secondary,
  .cta-button-group .btn-emergency {
    width: 100%;
  }

  .trust-indicators-inline,
  .trust-badges {
    flex-direction: column;
    gap: var(--space-4);
  }

  .comparison-table {
    font-size: var(--font-size-sm);
  }

  .comparison-table th,
  .comparison-table td {
    padding: var(--space-2);
  }
}

/* ========================================================================
   22. PRINT STYLES - Skill #11: Web Performance
   ======================================================================== */

@media print {
  /* Hide non-essential elements */
  .site-header,
  .site-footer,
  .sticky-cta-bar,
  .skip-link,
  .hero-cta-group,
  .cta-button-group,
  .btn-primary,
  .btn-secondary,
  .btn-tertiary,
  .btn-emergency,
  .social-links {
    display: none !important;
  }

  /* Clean layout */
  body {
    font-size: 12pt;
    line-height: 1.5;
    color: #000;
    background: #fff;
  }

  .container {
    max-width: 100%;
    padding: 0;
  }

  /* Prevent page breaks inside elements */
  .service-card,
  .feature-card,
  .industry-card,
  .trust-card,
  .testimonial {
    page-break-inside: avoid;
  }

  /* Show URLs for links */
  a[href]:after {
    content: " (" attr(href) ")";
    font-size: 10pt;
    color: #666;
  }

  /* Remove shadows and transitions */
  * {
    box-shadow: none !important;
    transition: none !important;
  }

  /* Adjust images */
  img {
    max-width: 100%;
    page-break-inside: avoid;
  }
}

/* ========================================================================
   23. FOCUS STATES & ACCESSIBILITY - Skill #10: WCAG 2.1 AA
   ======================================================================== */

/* High visibility focus indicator */
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Ensure sufficient color contrast */
::selection {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-border: #000000;
    --color-text-secondary: #000000;
  }

  .btn-primary,
  .btn-emergency {
    border: 2px solid currentColor;
  }
}

/* ========================================================================
   END OF STYLESHEET
   ======================================================================== */

/**
 * USAGE INSTRUCTIONS:
 *
 * 1. Link this stylesheet in the <head> of all production HTML files:
 *    <link rel="stylesheet" href="/assets/css/sitewide_styles_PRODUCTION.css">
 *
 * 2. Ensure CSS custom properties are supported (IE11+ not supported)
 *
 * 3. For best performance, consider:
 *    - Minifying CSS for production
 *    - Using a CDN for delivery
 *    - Enabling gzip compression
 *    - Setting appropriate cache headers
 *
 * 4. Test across browsers:
 *    - Chrome/Edge (Chromium)
 *    - Firefox
 *    - Safari (iOS and macOS)
 *
 * 5. Validate accessibility:
 *    - WAVE browser extension
 *    - axe DevTools
 *    - Keyboard navigation testing
 *    - Screen reader testing (NVDA, JAWS, VoiceOver)
 *
 * 6. Responsive testing breakpoints:
 *    - 320px (iPhone SE)
 *    - 375px (iPhone standard)
 *    - 768px (iPad portrait)
 *    - 1024px (iPad landscape / small desktop)
 *    - 1280px (desktop)
 *    - 1920px (large desktop)
 */