/* ===== CSS VARIABLES ===== */
:root {
  /* Dark Theme Base */
  --bg-primary: #0A0A0B;        
  --bg-secondary: #151517;      
  --bg-tertiary: #1F1F23;       
  --bg-hover: #2A2A2F;          
  
  /* Orange Accent Colors */
  --accent-primary: #F97316;    
  --accent-light: #FB923C;      
  --accent-dark: #EA580C;       
  --accent-glow: rgba(249, 115, 22, 0.2); 
  
  /* Text Colors */
  --text-primary: #FAFAFA;      
  --text-secondary: #A1A1AA;    
  --text-muted: #71717A;        
  
  /* Utility Colors */
  --success: #10B981;           
  --warning: #F59E0B;           
  --error: #EF4444;             
  --info: #3B82F6;              
  
  /* Borders & Dividers */
  --border-color: rgba(255, 255, 255, 0.1);
  --divider-color: rgba(255, 255, 255, 0.05);
  
  /* Gradients */
  --gradient-dark: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  --gradient-card: linear-gradient(135deg, var(--bg-tertiary) 0%, rgba(31, 31, 35, 0.5) 100%);
  --gradient-orange: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-dark) 100%);
  --gradient-glow: radial-gradient(circle at center, var(--accent-glow) 0%, transparent 70%);
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Font Weights */
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-black: 900;
  
  /* Fluid Typography */
  --text-xs: clamp(0.75rem, 1.5vw, 0.875rem);
  --text-sm: clamp(0.875rem, 2vw, 1rem);
  --text-base: clamp(1rem, 2.5vw, 1.125rem);
  --text-lg: clamp(1.125rem, 3vw, 1.25rem);
  --text-xl: clamp(1.25rem, 3.5vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 4vw, 2rem);
  --text-3xl: clamp(2rem, 5vw, 3rem);
  --text-4xl: clamp(2.5rem, 6vw, 4rem);
  --text-5xl: clamp(3rem, 8vw, 5rem);
  
  /* Breakpoints */
  --screen-sm: 640px;
  --screen-md: 768px;
  --screen-lg: 1024px;
  --screen-xl: 1280px;
  --screen-2xl: 1536px;
}

/* ===== BASE STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

/* ===== UTILITY CLASSES ===== */
.container {
  width: 100%;
  margin: 0 auto;
  padding: 0 1rem;
  max-width: 1280px;
}

@media (min-width: 640px) {
  .container { max-width: 640px; }
}

@media (min-width: 768px) {
  .container { max-width: 768px; }
}

@media (min-width: 1024px) {
  .container { max-width: 1024px; padding: 0 2rem; }
}

@media (min-width: 1280px) {
  .container { max-width: 1280px; }
}

/* Ensure navbar container takes full height */
.navbar .container {
  height: 100%;
}

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

/* ===== NAVIGATION ===== */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  height: 72px;
  background: rgba(10, 10, 11, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: all 0.3s ease;
}

.navbar.scrolled {
  height: 64px;
  background: rgba(10, 10, 11, 0.95);
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: var(--weight-black);
  background: var(--gradient-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
}

.nav-links {
  display: none;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
    align-items: center;
  }
}

.nav-link {
  color: var(--text-secondary);
  font-weight: var(--weight-medium);
  text-decoration: none;
  transition: color 0.2s ease;
  position: relative;
  display: flex;
  align-items: center;
  line-height: 1;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-primary);
  transition: width 0.3s ease;
}

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

.nav-cta {
  display: none;
}

@media (min-width: 768px) {
  .nav-cta {
    display: flex;
    align-items: center;
  }
}

/* Navigation button styling - smaller for navbar */
.nav-cta .btn {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
}

.mobile-menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}

@media (min-width: 768px) {
  .mobile-menu-toggle {
    display: none;
  }
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all 0.3s ease;
}

.mobile-menu {
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: #000000;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  z-index: 9999;
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-menu-item {
  display: block;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border-color);
  font-size: var(--text-lg);
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.2s ease;
  background: #000000;
}

.mobile-menu-item:active {
  background: #1a1a1a;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: var(--weight-semibold);
  font-size: var(--text-base);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-orange);
  color: white;
  box-shadow: 0 4px 14px 0 var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px 0 var(--accent-glow);
}

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

.btn-secondary:hover {
  background: var(--accent-glow);
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-primary);
}

/* ===== MAGNETIC EFFECT ===== */
.magnetic-btn {
  position: relative;
  transition: transform 0.2s ease;
}

.magnetic-btn:hover {
  transform: scale(1.05);
}

/* ===== GLOW EFFECT ===== */
.glow-hover {
  position: relative;
  isolation: isolate;
}

.glow-hover::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: var(--gradient-orange);
  opacity: 0;
  filter: blur(20px);
  transition: opacity 0.3s ease;
  z-index: -1;
}

.glow-hover:hover::after {
  opacity: 0.5;
}

/* ===== CARDS ===== */
.card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-orange);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-glow);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

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

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-glow);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  color: var(--accent-primary);
}

/* ===== SECTIONS ===== */
.section {
  padding: 5rem 0;
  position: relative;
}

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

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

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 4rem;
}

.section-title {
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== HERO SECTION ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 72px;
}

.hero-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
}

.hero-video video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-video img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.65) 0%, rgba(0, 0, 0, 0.55) 100%);
  z-index: 0;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: transparent;
  animation: pulse 8s ease-in-out infinite;
  z-index: -1;
}

@keyframes pulse {
  0%, 100% { transform: scale(1) rotate(0deg); }
  50% { transform: scale(1.1) rotate(180deg); }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero-title {
  font-size: var(--text-5xl);
  font-weight: var(--weight-black);
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

.hero-highlight {
  background: var(--gradient-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.stats-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin: 3rem 0;
}

.stat-card {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 1.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.stat-number {
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  background: var(--gradient-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.trust-badges {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
}

.badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.badge i {
  color: var(--accent-primary);
}

/* ===== PROBLEMS SECTION ===== */
.problems-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.problem-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.problem-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-orange);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.problem-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-glow);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

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

.problem-image {
  width: 100%;
  height: 200px;
  border-radius: 0.5rem;
  overflow: hidden;
  margin-bottom: 1rem;
}

.problem-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.problem-card:hover .problem-image img {
  transform: scale(1.05);
}

.problem-card h3 {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  margin-bottom: 1rem;
}

.problem-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

.case-study-callout {
  background: var(--accent-glow);
  border: 1px solid var(--accent-primary);
  border-radius: 1rem;
  padding: 2rem;
  text-align: center;
}

.callout-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.callout-icon {
  font-size: 2rem;
  color: var(--accent-primary);
}

.callout-link {
  color: var(--accent-primary);
  text-decoration: none;
  font-weight: var(--weight-semibold);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
}

.callout-link:hover {
  transform: translateX(5px);
}

/* ===== SOLUTION SECTION ===== */
.solution-grid {
  display: grid;
  gap: 4rem;
}

.solution-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

@media (max-width: 768px) {
  .solution-feature {
    grid-template-columns: 1fr;
  }
}

.feature-image {
  position: relative;
  width: 100%;
  height: 300px;
  border-radius: 1rem;
  overflow: hidden;
}

.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.solution-feature:hover .feature-image img {
  transform: scale(1.05);
}

.soil-diagram {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  overflow: hidden;
  height: 300px;
  display: flex;
  flex-direction: column;
}

.layer {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: var(--weight-semibold);
  position: relative;
}

.layer.topsoil {
  background: #8B4513;
}

.layer.stabilized {
  background: var(--gradient-orange);
  flex: 2;
}

.layer.subgrade {
  background: #4A4A4A;
}

.feature-content h3 {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  margin-bottom: 1rem;
}

.feature-content p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.feature-content ul {
  list-style: none;
  padding: 0;
}

.feature-content li {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  position: relative;
  padding-left: 1.5rem;
}

.feature-content li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent-primary);
  font-weight: var(--weight-bold);
}

/* ===== PROCESS SECTION ===== */
.timeline {
  position: relative;
  padding: 2rem 0;
}

.timeline-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
  transform: translateX(-50%);
}

@media (max-width: 768px) {
  .timeline-line {
    left: 2rem;
  }
}

.timeline-item {
  display: flex;
  align-items: center;
  margin-bottom: 4rem;
  position: relative;
}

.timeline-item:nth-child(even) {
  flex-direction: row-reverse;
}

@media (max-width: 768px) {
  .timeline-item,
  .timeline-item:nth-child(even) {
    flex-direction: row;
    padding-left: 5rem;
  }
}

.timeline-marker {
  position: absolute;
  left: 50%;
  width: 48px;
  height: 48px;
  background: var(--bg-primary);
  border: 3px solid var(--accent-primary);
  border-radius: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--weight-bold);
  color: var(--accent-primary);
}

@media (max-width: 768px) {
  .timeline-marker {
    left: 2rem;
  }
}

.timeline-content {
  width: calc(50% - 3rem);
  padding: 2rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  position: relative;
}

@media (max-width: 768px) {
  .timeline-content {
    width: calc(100% - 5rem);
  }
}

.timeline-content::before {
  content: '';
  position: absolute;
  top: 50%;
  width: 2rem;
  height: 2px;
  background: var(--border-color);
  transform: translateY(-50%);
}

.timeline-item:nth-child(odd) .timeline-content::before {
  right: -2rem;
}

.timeline-item:nth-child(even) .timeline-content::before {
  left: -2rem;
}

@media (max-width: 768px) {
  .timeline-content::before {
    display: none;
  }
}

.timeline-image {
  width: 100%;
  height: 200px;
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.timeline-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.timeline-item:hover .timeline-image img {
  transform: scale(1.05);
}

.timeline-content h3 {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  margin-bottom: 1rem;
}

.timeline-content p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.timeline-deliverable {
  padding: 1rem;
  background: rgba(249, 115, 22, 0.1);
  border-left: 3px solid var(--accent-primary);
  border-radius: 0.5rem;
  font-size: var(--text-sm);
}

.process-cta {
  text-align: center;
  margin-top: 3rem;
}

/* ===== CALCULATOR SECTION ===== */
.calculator-container {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 1.5rem;
  padding: 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

@media (max-width: 768px) {
  .calculator-container {
    grid-template-columns: 1fr;
  }
}

.calculator-input-group {
  margin-bottom: 1.5rem;
}

.calculator-label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
}

.slider {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 8px;
  border-radius: 4px;
  background: var(--bg-hover);
  outline: none;
  margin-bottom: 0.5rem;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-primary);
  cursor: pointer;
}

.slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-primary);
  cursor: pointer;
  border: none;
}

.slider-value {
  color: var(--accent-primary);
  font-weight: var(--weight-semibold);
}

.select {
  width: 100%;
  padding: 0.875rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  color: var(--text-primary);
  font-size: var(--text-base);
  transition: all 0.2s ease;
  appearance: none;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath fill='%23A1A1AA' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.select:focus {
  outline: none;
  border-color: var(--accent-primary);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.calculator-results {
  background: rgba(249, 115, 22, 0.1);
  border: 1px solid var(--accent-primary);
  border-radius: 1rem;
  padding: 2rem;
  text-align: center;
}

.result-value {
  font-size: var(--text-5xl);
  font-weight: var(--weight-black);
  background: var(--gradient-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
}

.result-label {
  color: var(--text-secondary);
  font-size: var(--text-lg);
  margin-bottom: 2rem;
}

.comparison-table {
  margin: 2rem 0;
  text-align: left;
}

.comparison-header,
.comparison-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
}

.comparison-header {
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
}

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

.comparison-row.total {
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
  border-bottom: none;
}

.roi-metrics {
  display: flex;
  gap: 2rem;
  justify-content: center;
  margin-top: 2rem;
}

.metric {
  text-align: center;
}

.metric-value {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--accent-primary);
  display: block;
}

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

/* ===== CASE STUDIES SECTION ===== */
.case-studies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.case-study-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  overflow: hidden;
  transition: all 0.3s ease;
  cursor: pointer;
}

.case-study-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-glow);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.case-study-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
  position: relative;
}

.case-study-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.case-study-card:hover .case-study-image img {
  transform: scale(1.05);
}

.case-study-content {
  padding: 2rem;
}

.case-study-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--accent-glow);
  color: var(--accent-primary);
  border-radius: 0.25rem;
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.case-study-content h3 {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  margin-bottom: 1rem;
}

.case-study-content p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.case-study-metric {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin: 1rem 0;
}

.case-studies-cta {
  text-align: center;
}

/* ===== ROI PROOF SECTION ===== */
.roi-metrics-display {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.roi-metric {
  text-align: center;
  padding: 2rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  transition: all 0.3s ease;
}

.roi-metric:hover {
  transform: translateY(-4px);
  border-color: var(--accent-glow);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.roi-metric .metric-value {
  font-size: var(--text-4xl);
  font-weight: var(--weight-black);
  background: var(--gradient-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
  display: block;
}

.roi-metric .metric-label {
  color: var(--text-secondary);
  font-size: var(--text-base);
}

.testimonials {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.testimonial {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2rem;
  transition: all 0.3s ease;
}

.testimonial:hover {
  transform: translateY(-4px);
  border-color: var(--accent-glow);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.testimonial-content {
  margin-bottom: 1.5rem;
}

.testimonial-content i {
  font-size: 2rem;
  color: var(--accent-primary);
  margin-bottom: 1rem;
}

.testimonial-content p {
  color: var(--text-secondary);
  line-height: 1.6;
  font-style: italic;
}

.testimonial-author strong {
  color: var(--text-primary);
  display: block;
  margin-bottom: 0.25rem;
}

.testimonial-author span {
  color: var(--text-muted);
  font-size: var(--text-sm);
}

/* ===== ENVIRONMENTAL SECTION ===== */
.environmental-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.environmental-item {
  text-align: center;
  padding: 2rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  transition: all 0.3s ease;
}

.environmental-item:hover {
  transform: translateY(-4px);
  border-color: var(--accent-glow);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.env-icon {
  width: 64px;
  height: 64px;
  background: var(--accent-glow);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: var(--accent-primary);
  font-size: 1.5rem;
}

.env-metric {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  background: var(--gradient-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
}

.env-label {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  margin-bottom: 1rem;
}

.environmental-item p {
  color: var(--text-secondary);
  line-height: 1.6;
}

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

.cert-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  background: var(--accent-glow);
  border: 1px solid var(--accent-primary);
  border-radius: 0.5rem;
  color: var(--accent-primary);
  font-weight: var(--weight-semibold);
}

/* ===== FAQ SECTION ===== */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  margin-bottom: 1rem;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-question {
  padding: 1.5rem 2rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.2s ease;
}

.faq-question:hover {
  background: var(--bg-hover);
}

.faq-question h3 {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  margin: 0;
}

.faq-question i {
  color: var(--accent-primary);
  transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer p {
  padding: 0 2rem 1.5rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* ===== CTA SECTION ===== */
.cta-container {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4rem;
  align-items: start;
}

@media (max-width: 1024px) {
  .cta-container {
    grid-template-columns: 1fr;
  }
}

.cta-offer {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

@media (max-width: 768px) {
  .cta-offer {
    grid-template-columns: 1fr;
  }
}

.offer-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2rem;
  text-align: center;
  transition: all 0.3s ease;
}

.offer-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-glow);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.offer-icon {
  width: 64px;
  height: 64px;
  background: var(--accent-glow);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: var(--accent-primary);
  font-size: 1.5rem;
}

.offer-card h3 {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  margin-bottom: 1rem;
}

.offer-value {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  background: var(--gradient-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1.5rem;
}

.offer-card ul {
  list-style: none;
  padding: 0;
  text-align: left;
}

.offer-card li {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  position: relative;
  padding-left: 1.5rem;
}

.offer-card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent-primary);
  font-weight: var(--weight-bold);
}

/* ===== CONTACT FORM ===== */
.contact-form {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2rem;
}

.contact-form h3 {
  font-size: var(--text-2xl);
  font-weight: var(--weight-semibold);
  margin-bottom: 2rem;
  text-align: center;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
}

.input {
  width: 100%;
  padding: 0.875rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  color: var(--text-primary);
  font-size: var(--text-base);
  transition: all 0.2s ease;
}

.input:focus {
  outline: none;
  border-color: var(--accent-primary);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

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

.form-submit {
  width: 100%;
  margin-top: 1rem;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: var(--weight-black);
  background: var(--gradient-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1rem;
}

.footer-section p {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.footer-section h4 {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  margin-bottom: 1rem;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.contact-item i {
  color: var(--accent-primary);
  width: 16px;
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.social-links {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.social-link {
  width: 40px;
  height: 40px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.2s ease;
}

.social-link:hover {
  background: var(--accent-primary);
  color: white;
  transform: translateY(-2px);
}

.certifications {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.cert-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.cert-item i {
  color: var(--accent-primary);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: var(--text-sm);
}

/* ===== ANIMATIONS ===== */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.scale-in {
  opacity: 0;
  transform: scale(0.9);
  transition: all 0.6s ease;
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

.stagger-item {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.4s ease;
}

.stagger-container.visible .stagger-item {
  opacity: 1;
  transform: translateY(0);
}

.stagger-container.visible .stagger-item:nth-child(1) { transition-delay: 0.1s; }
.stagger-container.visible .stagger-item:nth-child(2) { transition-delay: 0.2s; }
.stagger-container.visible .stagger-item:nth-child(3) { transition-delay: 0.3s; }
.stagger-container.visible .stagger-item:nth-child(4) { transition-delay: 0.4s; }

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .hero-title {
    font-size: var(--text-4xl);
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  
  .stats-container {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .section {
    padding: 3rem 0;
  }
  
  .section-title {
    font-size: var(--text-3xl);
  }
  
  .problems-grid {
    grid-template-columns: 1fr;
  }
  
  .case-studies-grid {
    grid-template-columns: 1fr;
  }
  
  .roi-metrics-display {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .environmental-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .testimonials {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .stats-container {
    grid-template-columns: 1fr;
  }
  
  .roi-metrics-display {
    grid-template-columns: 1fr;
  }
  
  .environmental-grid {
    grid-template-columns: 1fr;
  }
  
  .roi-metrics {
    flex-direction: column;
    gap: 1rem;
  }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===== LOADING STATES ===== */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-tertiary) 25%,
    rgba(255, 255, 255, 0.1) 50%,
    var(--bg-tertiary) 75%
  );
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}