/**
 * Aldur Engineering - Global Styles
 * Main stylesheet containing design system, variables, and reusable components
 */

/* ============================================
   CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ============================================ */

:root {
  /* Brand Colors - Industrial Power Sector Palette */
  --color-navy-900: #0a1628;
  --color-navy-800: #0f1f3a;
  --color-navy-700: #162d50;
  --color-charcoal-900: #1a1a1a;
  --color-charcoal-800: #2a2a2a;
  --color-charcoal-700: #3a3a3a;
  --color-steel-600: #4a5568;
  --color-steel-500: #718096;
  --color-steel-400: #a0aec0;
  --color-steel-300: #cbd5e0;
  --color-amber-500: #d97706;
  --color-amber-600: #b45309;
  --color-amber-400: #fbbf24;
  --color-gold-500: #c9a227;
  --color-white: #ffffff;
  --color-gray-100: #f7fafc;
  --color-gray-200: #edf2f7;
  --color-gray-300: #e2e8f0;
  --color-gray-400: #cbd5e0;
  --color-gray-500: #a0aec0;
  --color-gray-600: #718096;
  --color-gray-700: #4a5568;
  --color-gray-800: #2d3748;
  --color-gray-900: #1a202c;
  
  /* Semantic Colors */
  --color-primary: var(--color-navy-900);
  --color-primary-light: var(--color-navy-800);
  --color-secondary: var(--color-amber-500);
  --color-secondary-hover: var(--color-amber-600);
  --color-accent: var(--color-gold-500);
  --color-text-primary: var(--color-gray-900);
  --color-text-secondary: var(--color-gray-600);
  --color-text-light: var(--color-gray-400);
  --color-text-inverse: var(--color-white);
  --color-background: var(--color-white);
  --color-background-alt: var(--color-gray-100);
  --color-background-dark: var(--color-navy-900);
  --color-border: var(--color-gray-300);
  --color-border-dark: var(--color-gray-700);
  
  /* Typography Scale */
  --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-family-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-family-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  --font-size-7xl: 4.5rem;
  
  --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: 1.625;
  
  /* Spacing System */
  --spacing-0: 0;
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  --spacing-24: 6rem;
  --spacing-32: 8rem;
  
  /* Layout */
  --container-max: 1280px;
  --container-narrow: 960px;
  --container-wide: 1440px;
  --header-height: 80px;
  --header-height-mobile: 64px;
  
  /* Borders & Radius */
  --border-width-thin: 1px;
  --border-width-medium: 2px;
  --border-width-thick: 4px;
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --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);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
  --transition-slower: 500ms ease;
  
  /* Z-Index Scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
}

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

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

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-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

h1 {
  font-size: var(--font-size-5xl);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--font-size-4xl);
  letter-spacing: -0.02em;
}

h3 {
  font-size: var(--font-size-3xl);
}

h4 {
  font-size: var(--font-size-2xl);
}

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

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

p {
  margin-bottom: var(--spacing-4);
  color: var(--color-text-secondary);
}

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

a:hover {
  color: var(--color-secondary-hover);
}

a:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

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

small {
  font-size: var(--font-size-sm);
}

/* ============================================
   LAYOUT UTILITIES
   ============================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-6);
  padding-right: var(--spacing-6);
}

.container-narrow {
  max-width: var(--container-narrow);
}

.container-wide {
  max-width: var(--container-wide);
}

.section {
  padding-top: var(--spacing-20);
  padding-bottom: var(--spacing-20);
}

.section-alt {
  background-color: var(--color-background-alt);
}

.section-dark {
  background-color: var(--color-background-dark);
  color: var(--color-text-inverse);
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-background);
  border-bottom: var(--border-width-thin) solid var(--color-border);
  z-index: var(--z-fixed);
  transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
}

.site-header.scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-md);
}

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

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.site-logo:hover {
  color: var(--color-primary);
}

.site-logo-text {
  display: flex;
  flex-direction: column;
  line-height: var(--line-height-tight);
}

.site-logo-name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.site-logo-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
}

.site-nav-list {
  display: flex;
  align-items: center;
  gap: var(--spacing-6);
  list-style: none;
}

.site-nav-link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
}

.site-nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-secondary);
  transition: width var(--transition-normal);
}

.site-nav-link:hover {
  color: var(--color-secondary);
}

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

.site-nav-link.active {
  color: var(--color-secondary);
}

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

.site-nav-cta {
  margin-left: var(--spacing-4);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  padding: var(--spacing-2);
  cursor: pointer;
  z-index: var(--z-modal);
}

.mobile-menu-toggle-icon {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  position: relative;
  transition: background-color var(--transition-fast);
}

.mobile-menu-toggle-icon::before,
.mobile-menu-toggle-icon::after {
  content: '';
  position: absolute;
  left: 0;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: transform var(--transition-normal);
}

.mobile-menu-toggle-icon::before {
  top: -7px;
}

.mobile-menu-toggle-icon::after {
  bottom: -7px;
}

.mobile-menu-toggle[aria-expanded="true"] .mobile-menu-toggle-icon {
  background-color: transparent;
}

.mobile-menu-toggle[aria-expanded="true"] .mobile-menu-toggle-icon::before {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle[aria-expanded="true"] .mobile-menu-toggle-icon::after {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 320px;
  background-color: var(--color-background);
  z-index: var(--z-modal);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-2xl);
  overflow-y: auto;
}

.mobile-nav.is-open {
  display: flex;
  flex-direction: column;
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-8);
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.mobile-nav-link {
  display: block;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  text-decoration: none;
  padding: var(--spacing-3) 0;
  border-bottom: var(--border-width-thin) solid var(--color-border);
  transition: color var(--transition-fast);
}

.mobile-nav-link:hover {
  color: var(--color-secondary);
}

.mobile-nav-cta {
  margin-top: var(--spacing-8);
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-modal) - 1);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.mobile-nav-overlay.is-visible {
  display: block;
  opacity: 1;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  font-family: var(--font-family-base);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  text-decoration: none;
  border: var(--border-width-thin) solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

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

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

.btn-secondary {
  background-color: transparent;
  color: var(--color-text-inverse);
  border-color: var(--color-text-inverse);
}

.btn-secondary:hover {
  background-color: var(--color-text-inverse);
  color: var(--color-background);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-secondary);
  border-color: var(--color-secondary);
}

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

.btn-outline-dark {
  background-color: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border-dark);
}

.btn-outline-dark:hover {
  background-color: var(--color-text-primary);
  color: var(--color-background);
  border-color: var(--color-text-primary);
}

.btn-lg {
  padding: var(--spacing-4) var(--spacing-8);
  font-size: var(--font-size-base);
}

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

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

.form-group {
  margin-bottom: var(--spacing-5);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.form-label-required {
  color: var(--color-secondary);
  margin-left: var(--spacing-1);
}

.form-input,
.form-select,
.form-textarea {
  display: block;
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  border: var(--border-width-thin) solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--color-steel-500);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-light);
}

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

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23718096' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-4) center;
  padding-right: var(--spacing-10);
}

.form-error {
  margin-top: var(--spacing-1);
  font-size: var(--font-size-sm);
  color: #dc2626;
}

.form-hint {
  margin-top: var(--spacing-1);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

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

.card {
  background-color: var(--color-background);
  border: var(--border-width-thin) solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-6);
  transition: all var(--transition-normal);
}

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

.card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--spacing-4);
  color: var(--color-secondary);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-2);
  color: var(--color-text-primary);
}

.card-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ============================================
   SECTIONS - SHARED
   ============================================ */

.section-header {
  text-align: center;
  max-width: 768px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--spacing-12);
}

.section-label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-3);
}

.section-title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-4);
}

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

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

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-navy-900);
  background-image: linear-gradient(
    rgba(10, 22, 40, 0.85),
    rgba(10, 22, 40, 0.75)
  ), url('../assets/images/hero-industrial.svg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 960px;
  padding: var(--spacing-12) var(--spacing-6);
}

.hero-eyebrow {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-amber-400);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: var(--spacing-4);
  padding: var(--spacing-2) var(--spacing-4);
  background-color: rgba(217, 119, 6, 0.1);
  border-radius: var(--radius-full);
  border: 1px solid rgba(217, 119, 6, 0.3);
}

.hero-title {
  font-size: var(--font-size-6xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--spacing-6);
  letter-spacing: -0.03em;
  line-height: var(--line-height-tight);
}

.hero-title-brand {
  display: block;
  font-size: var(--font-size-7xl);
  color: var(--color-amber-400);
  margin-bottom: var(--spacing-2);
}

.hero-description {
  font-size: var(--font-size-xl);
  color: var(--color-gray-300);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--spacing-8);
  line-height: var(--line-height-relaxed);
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-4);
  flex-wrap: wrap;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: var(--spacing-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-2);
  color: var(--color-gray-400);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  animation: bounce 2s infinite;
}

.hero-scroll-indicator svg {
  width: 24px;
  height: 24px;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-8px);
  }
  60% {
    transform: translateX(-50%) translateY(-4px);
  }
}

/* ============================================
   CAPABILITY STRIP
   ============================================ */

.capability-strip {
  background-color: var(--color-navy-800);
  padding: var(--spacing-8) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.capability-strip .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-8);
}

.capability-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  color: var(--color-gray-300);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.capability-item svg {
  width: 20px;
  height: 20px;
  color: var(--color-amber-400);
  flex-shrink: 0;
}

/* ============================================
   ABOUT SECTION
   ============================================ */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-16);
  align-items: center;
}

.about-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slower);
}

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

.about-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-4);
  background-color: rgba(217, 119, 6, 0.1);
  border: 1px solid rgba(217, 119, 6, 0.3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-4);
}

.about-title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-6);
}

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

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4);
  list-style: none;
}

.about-feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.about-feature svg {
  width: 20px;
  height: 20px;
  color: var(--color-secondary);
  flex-shrink: 0;
}

/* ============================================
   SERVICES SECTION
   ============================================ */

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-6);
}

.service-card {
  background-color: var(--color-background);
  border: var(--border-width-thin) solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-8);
  transition: all var(--transition-normal);
}

.service-card:hover {
  border-color: var(--color-secondary);
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.service-card-icon {
  width: 56px;
  height: 56px;
  margin-bottom: var(--spacing-5);
  color: var(--color-secondary);
}

.service-card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-3);
  color: var(--color-text-primary);
}

.service-card-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ============================================
   PROCESS SECTION
   ============================================ */

.process-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-4);
  position: relative;
}

.process-timeline::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  right: 10%;
  height: 2px;
  background-color: var(--color-border);
}

.process-step {
  position: relative;
  text-align: center;
}

.process-step-number {
  width: 80px;
  height: 80px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--spacing-4);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-navy-900);
  border: 2px solid var(--color-secondary);
  border-radius: 50%;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-secondary);
  position: relative;
  z-index: 1;
}

.process-step-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-2);
}

.process-step-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ============================================
   INDUSTRIES SECTION
   ============================================ */

.industries-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-6);
}

.industry-tile {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-navy-900);
}

.industry-tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.6;
  transition: all var(--transition-slower);
}

.industry-tile:hover img {
  opacity: 0.4;
  transform: scale(1.1);
}

.industry-tile-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--spacing-6);
  background: linear-gradient(to top, rgba(10, 22, 40, 0.9), transparent);
}

.industry-tile-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-1);
}

.industry-tile-description {
  font-size: var(--font-size-sm);
  color: var(--color-gray-300);
}

/* ============================================
   PARTNERS MARQUEE
   ============================================ */

.partners-section {
  background-color: var(--color-gray-100);
  padding: var(--spacing-16) 0;
  overflow: hidden;
}

.partners-header {
  text-align: center;
  max-width: 768px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--spacing-12);
}

.partners-marquee {
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.partners-track {
  display: flex;
  align-items: center;
  gap: var(--spacing-12);
  animation: marquee 60s linear infinite;
}

.partners-track:hover {
  animation-play-state: paused;
}

.partner-logo {
  flex-shrink: 0;
  width: 180px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-4);
  background-color: var(--color-white);
  border: var(--border-width-thin) solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  opacity: 0.6;
}

.partner-logo:hover {
  opacity: 1;
  border-color: var(--color-secondary);
  box-shadow: var(--shadow-md);
}

.partner-logo img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: grayscale(100%);
  transition: filter var(--transition-normal);
}

.partner-logo:hover img {
  filter: grayscale(0%);
}

@keyframes marquee {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

/* ============================================
   GROUP STRUCTURE SECTION
   ============================================ */

.group-structure {
  background-color: var(--color-navy-900);
  color: var(--color-text-inverse);
}

.group-structure .section-title {
  color: var(--color-white);
}

.group-structure .section-description {
  color: var(--color-gray-400);
}

.group-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-8);
  position: relative;
}

.group-grid::before {
  content: '';
  position: absolute;
  top: -24px;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 24px;
  background-color: var(--color-amber-400);
}

.group-card {
  background-color: var(--color-navy-800);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--spacing-8);
  text-align: center;
  transition: all var(--transition-normal);
  position: relative;
}

.group-card::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 2px;
  background-color: var(--color-amber-400);
}

.group-card-primary {
  border-color: var(--color-amber-400);
  background: linear-gradient(180deg, rgba(217, 119, 6, 0.1) 0%, var(--color-navy-800) 100%);
}

.group-card:hover {
  border-color: var(--color-amber-400);
  transform: translateY(-4px);
}

.group-card-icon {
  width: 64px;
  height: 64px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--spacing-5);
  color: var(--color-amber-400);
}

.group-card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--spacing-2);
}

.group-card-role {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-amber-400);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-4);
}

.group-card-description {
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-5);
}

.group-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-amber-400);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.group-card-link:hover {
  color: var(--color-amber-500);
}

.group-card-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.group-card-link:hover svg {
  transform: translateX(4px);
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-12);
}

.contact-info {
  padding-right: var(--spacing-8);
}

.contact-info-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-6);
}

.contact-info-text {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-8);
  line-height: var(--line-height-relaxed);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-5);
}

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-4);
}

.contact-detail-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(217, 119, 6, 0.1);
  border-radius: var(--radius-md);
  color: var(--color-secondary);
  flex-shrink: 0;
}

.contact-detail-icon svg {
  width: 24px;
  height: 24px;
}

.contact-detail-content {
  flex: 1;
}

.contact-detail-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-1);
}

.contact-detail-value {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

.contact-detail-value a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.contact-detail-value a:hover {
  color: var(--color-secondary-hover);
}

.contact-form-wrapper {
  background-color: var(--color-background-alt);
  border-radius: var(--radius-lg);
  padding: var(--spacing-8);
}

.contact-form-title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-6);
}

.contact-form-success {
  background-color: #059669;
  color: var(--color-white);
  padding: var(--spacing-6);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-6);
}

.contact-form-success-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-2);
}

.contact-form-success-text {
  font-size: var(--font-size-sm);
  opacity: 0.9;
}

/* ============================================
   FOOTER
   ============================================ */

.site-footer {
  background-color: var(--color-navy-900);
  color: var(--color-gray-400);
  padding-top: var(--spacing-16);
  padding-bottom: var(--spacing-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-12);
  margin-bottom: var(--spacing-12);
  padding-bottom: var(--spacing-12);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
  padding-right: var(--spacing-8);
}

.footer-brand-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  text-decoration: none;
  margin-bottom: var(--spacing-4);
}

.footer-brand-logo:hover {
  color: var(--color-white);
}

.footer-brand-description {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-4);
}

.footer-brand-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-3);
  background-color: rgba(217, 119, 6, 0.1);
  border: 1px solid rgba(217, 119, 6, 0.3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-amber-400);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.footer-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-5);
}

.footer-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.footer-link {
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-amber-400);
}

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3);
  font-size: var(--font-size-sm);
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  color: var(--color-amber-400);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-4);
}

.footer-copyright {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.footer-legal {
  display: flex;
  align-items: center;
  gap: var(--spacing-6);
}

.footer-legal-link {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-legal-link:hover {
  color: var(--color-gray-300);
}

.footer-designed-by {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.footer-designed-by a {
  color: var(--color-gray-400);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-designed-by a:hover {
  color: var(--color-amber-400);
}

/* ============================================
   FAQ PAGE
   ============================================ */

.faq-list {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.faq-item {
  background-color: var(--color-background);
  border: var(--border-width-thin) solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-5) var(--spacing-6);
  background: none;
  border: none;
  text-align: left;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.faq-question:hover {
  background-color: var(--color-gray-100);
}

.faq-question-icon {
  width: 24px;
  height: 24px;
  color: var(--color-secondary);
  flex-shrink: 0;
  transition: transform var(--transition-normal);
}

.faq-item.is-open .faq-question-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slower), padding var(--transition-slower);
}

.faq-item.is-open .faq-answer {
  max-height: 500px;
  padding: 0 var(--spacing-6) var(--spacing-6);
}

.faq-answer-content {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ============================================
   LEGAL PAGES
   ============================================ */

.legal-hero {
  background-color: var(--color-navy-900);
  padding: var(--spacing-24) 0 var(--spacing-16);
  text-align: center;
}

.legal-hero-title {
  font-size: var(--font-size-5xl);
  color: var(--color-white);
  margin-bottom: var(--spacing-4);
}

.legal-hero-description {
  font-size: var(--font-size-lg);
  color: var(--color-gray-400);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.legal-content {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  padding: var(--spacing-16) var(--spacing-6);
}

.legal-section {
  margin-bottom: var(--spacing-12);
}

.legal-section-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-4);
  padding-bottom: var(--spacing-3);
  border-bottom: 2px solid var(--color-secondary);
}

.legal-section-content {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.legal-section-content p {
  margin-bottom: var(--spacing-4);
}

.legal-section-content ul,
.legal-section-content ol {
  margin-bottom: var(--spacing-4);
  padding-left: var(--spacing-6);
}

.legal-section-content li {
  margin-bottom: var(--spacing-2);
}

.legal-notice {
  background-color: rgba(217, 119, 6, 0.1);
  border: 1px solid rgba(217, 119, 6, 0.3);
  border-radius: var(--radius-md);
  padding: var(--spacing-6);
  margin-bottom: var(--spacing-12);
}

.legal-notice-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-secondary);
  margin-bottom: var(--spacing-2);
}

.legal-notice-title svg {
  width: 24px;
  height: 24px;
}

.legal-notice-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ============================================
   404 PAGE
   ============================================ */

.error-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-12) var(--spacing-6);
  text-align: center;
}

.error-code {
  font-size: 120px;
  font-weight: var(--font-weight-bold);
  color: var(--color-secondary);
  line-height: 1;
  margin-bottom: var(--spacing-6);
}

.error-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-4);
}

.error-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 480px;
  margin-bottom: var(--spacing-8);
}

.error-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-4);
}

.error-attribution {
  margin-top: var(--spacing-16);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

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

.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  z-index: var(--z-tooltip);
  padding: var(--spacing-3) var(--spacing-5);
  background-color: var(--color-secondary);
  color: var(--color-white);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}

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

/* Focus Styles */
:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  .hero-scroll-indicator {
    animation: none;
  }
  
  .partners-track {
    animation: none;
  }
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
  :root {
    --header-height: 72px;
  }
  
  h1 {
    font-size: var(--font-size-4xl);
  }
  
  h2 {
    font-size: var(--font-size-3xl);
  }
  
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .industries-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .group-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-8);
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --header-height: var(--header-height-mobile);
  }
  
  .site-nav {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  h1 {
    font-size: var(--font-size-3xl);
  }
  
  h2 {
    font-size: var(--font-size-2xl);
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .hero-title-brand {
    font-size: var(--font-size-5xl);
  }
  
  .hero-description {
    font-size: var(--font-size-base);
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }
  
  .hero-cta .btn {
    width: 100%;
  }
  
  .capability-strip .container {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4);
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
  }
  
  .about-features {
    grid-template-columns: 1fr;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .process-timeline {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
  }
  
  .process-timeline::before {
    display: none;
  }
  
  .industries-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
  }
  
  .contact-info {
    padding-right: 0;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-legal {
    flex-wrap: wrap;
    justify-content: center;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  .container {
    padding-left: var(--spacing-4);
    padding-right: var(--spacing-4);
  }
  
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .hero-title-brand {
    font-size: var(--font-size-4xl);
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
  
  .capability-strip .container {
    grid-template-columns: 1fr;
  }
  
  .partner-logo {
    width: 140px;
    height: 60px;
  }
}