/* ============================================
   Dev Velocity Hub - Design System
   ============================================ */

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */

:root {
  /* Color Palette - Professional & Modern */
  --color-primary: #0066cc;
  --color-primary-dark: #0052a3;
  --color-primary-light: #3385d6;
  --color-secondary: #64748b;
  --color-accent: #10b981; /* Green for success/growth */
  
  /* Neutral Grays */
  --color-gray-50: #f8fafc;
  --color-gray-100: #f1f5f9;
  --color-gray-200: #e2e8f0;
  --color-gray-300: #cbd5e1;
  --color-gray-400: #94a3b8;
  --color-gray-500: #64748b;
  --color-gray-600: #475569;
  --color-gray-700: #334155;
  --color-gray-800: #1e293b;
  --color-gray-900: #0f172a;
  
  /* Semantic Colors - WCAG AA Compliant */
  --color-success: #10b981;
  --color-error: #dc2626; /* Darkened from #ef4444 for better contrast (4.5:1 on white) */
  --color-warning: #f59e0b;
  --color-info: #3b82f6;
  
  /* Background Colors */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-dark: #0f172a;
  
  /* Text Colors - WCAG AA Compliant */
  --color-text-primary: #0f172a;
  --color-text-secondary: #334155; /* Darkened for better contrast (was #475569) */
  --color-text-muted: #64748b; /* Darkened for better contrast (was #94a3b8) */
  --color-text-inverse: #ffffff;
  
  /* Spacing Scale */
  --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 */
  
  /* Typography Scale */
  --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-mono: '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-size-6xl: 3.75rem;    /* 60px */
  
  --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;
  
  /* Border Radius */
  --radius-sm: 0.25rem;   /* 4px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */
  --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-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* Z-index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  
  /* Container Max Width */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

/* ============================================
   Base Styles & Reset
   ============================================ */

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

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

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);
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  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-5xl);
}

h2 {
  font-size: var(--font-size-4xl);
}

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(--space-4);
  color: var(--color-text-secondary);
}

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

a:hover {
  color: var(--color-primary-dark);
}

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

a:focus:not(:focus-visible) {
  outline: none;
}

a:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ============================================
   Utility Classes
   ============================================ */

/* Container */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

/* Text Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-white { color: var(--color-text-inverse); }

.font-bold { font-weight: var(--font-weight-bold); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-medium { font-weight: var(--font-weight-medium); }

/* Spacing Utilities */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mt-16 { margin-top: var(--space-16); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }
.mb-16 { margin-bottom: var(--space-16); }

.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.py-6 { padding-top: var(--space-6); padding-bottom: var(--space-6); }
.py-8 { padding-top: var(--space-8); padding-bottom: var(--space-8); }
.py-12 { padding-top: var(--space-12); padding-bottom: var(--space-12); }
.py-16 { padding-top: var(--space-16); padding-bottom: var(--space-16); }
.py-20 { padding-top: var(--space-20); padding-bottom: var(--space-20); }

/* Display Utilities */
.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

/* Flexbox Utilities */
.flex-row { flex-direction: row; }
.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* Grid Utilities */
.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* Background Utilities */
.bg-primary { background-color: var(--color-primary); }
.bg-secondary { background-color: var(--color-bg-secondary); }
.bg-dark { background-color: var(--color-bg-dark); }
.bg-white { background-color: var(--color-bg-primary); }

/* Border Utilities */
.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

/* Shadow Utilities */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

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

/* Skip to content link - visible on focus */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-3) var(--space-6);
  text-decoration: none;
  z-index: 10000;
  border-radius: 0 0 var(--radius-md) 0;
  font-weight: var(--font-weight-semibold);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* ============================================
   Component Styles
   ============================================ */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  text-align: center;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

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

.btn:focus:not(:focus-visible) {
  outline: none;
}

.btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2);
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

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

.btn-secondary:hover {
  color: var(--color-text-inverse);
  background-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-accent {
  color: var(--color-text-primary);
  background-color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn-accent:hover {
  background-color: #d97706;
  border-color: #d97706;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

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

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Cards */
.card {
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-6);
  transition: all var(--transition-base);
}

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

.card-header {
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-gray-200);
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.card-body {
  color: var(--color-text-secondary);
}

.card-footer {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-gray-200);
}

.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-2xl);
}

/* Forms */
.form-group {
  margin-bottom: var(--space-6);
}

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

.form-label.required::after {
  content: " *";
  color: var(--color-error);
}

.form-control {
  display: block;
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-control:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2);
}

.form-control:disabled {
  background-color: var(--color-gray-100);
  cursor: not-allowed;
  opacity: 0.6;
}

.form-control.is-invalid {
  border-color: var(--color-error);
}

.form-control.is-invalid:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

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

.form-error {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-error);
}

.form-help {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--color-bg-primary);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-4);
}

.navbar-brand {
  display: flex;
  align-items: center;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-decoration: none;
}

.navbar-brand:hover {
  color: var(--color-primary);
}

.navbar-logo {
  height: 40px;
  width: auto;
  margin-right: var(--space-3);
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar-link {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
}

.navbar-link:hover,
.navbar-link.active {
  color: var(--color-primary);
}

.navbar-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}

.navbar-link:hover::after,
.navbar-link.active::after {
  width: 100%;
}

.navbar-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  color: var(--color-text-primary);
  font-size: var(--font-size-2xl);
}

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

/* Footer */
.footer {
  background-color: var(--color-bg-dark);
  color: var(--color-gray-300);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.footer-section h3 {
  color: var(--color-text-inverse);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-4);
}

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

.footer-links li {
  margin-bottom: var(--space-3);
}

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

.footer-links a:hover {
  color: var(--color-text-inverse);
}

.footer-social {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.footer-social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-gray-700);
  color: var(--color-text-inverse);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: all var(--transition-fast);
}

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

.footer-bottom {
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-gray-700);
  text-align: center;
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
}

/* Alerts */
.alert {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  border-left: 4px solid;
}

.alert-success {
  background-color: #d1fae5;
  border-color: var(--color-success);
  color: #065f46;
}

.alert-error {
  background-color: #fee2e2;
  border-color: var(--color-error);
  color: #991b1b;
}

.alert-warning {
  background-color: #fef3c7;
  border-color: var(--color-warning);
  color: #92400e;
}

.alert-info {
  background-color: #dbeafe;
  border-color: var(--color-info);
  color: #1e40af;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}

.badge-secondary {
  background-color: var(--color-gray-200);
  color: var(--color-text-secondary);
}

.badge-success {
  background-color: var(--color-success);
  color: var(--color-text-inverse);
}

/* ============================================
   Responsive Styles (Mobile-First)
   ============================================ */

/* Base Mobile Styles (320px+) */
/* Already defined above as default */

/* Mobile Navigation */
@media (max-width: 767px) {
  .navbar-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: var(--color-bg-primary);
    box-shadow: var(--shadow-lg);
    padding: var(--space-6);
    gap: var(--space-4);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
  }
  
  .navbar-menu.active {
    transform: translateX(0);
  }
  
  .navbar-toggle {
    display: block;
  }
  
  .navbar-link::after {
    display: none;
  }
}

/* Tablet Styles (768px+) */
@media (min-width: 768px) {
  :root {
    --font-size-5xl: 3.5rem;   /* 56px */
    --font-size-4xl: 2.5rem;   /* 40px */
  }
  
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
  
  h1 {
    font-size: var(--font-size-5xl);
  }
  
  h2 {
    font-size: var(--font-size-4xl);
  }
  
  /* Grid adjustments */
  .grid-cols-md-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-cols-md-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  
  /* Card grid for tablet */
  .card-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }
  
  /* Navbar adjustments */
  .navbar-container {
    padding: var(--space-5) var(--space-6);
  }
  
  /* Footer adjustments */
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* Spacing adjustments */
  .py-md-8 { padding-top: var(--space-8); padding-bottom: var(--space-8); }
  .py-md-12 { padding-top: var(--space-12); padding-bottom: var(--space-12); }
  .py-md-16 { padding-top: var(--space-16); padding-bottom: var(--space-16); }
  
  .mt-md-8 { margin-top: var(--space-8); }
  .mt-md-12 { margin-top: var(--space-12); }
  .mb-md-8 { margin-bottom: var(--space-8); }
  .mb-md-12 { margin-bottom: var(--space-12); }
}

/* Desktop Styles (1024px+) */
@media (min-width: 1024px) {
  :root {
    --font-size-6xl: 4rem;     /* 64px */
    --font-size-5xl: 3.75rem;  /* 60px */
  }
  
  .container {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }
  
  h1 {
    font-size: var(--font-size-6xl);
  }
  
  /* Grid adjustments */
  .grid-cols-lg-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .grid-cols-lg-4 {
    grid-template-columns: repeat(4, 1fr);
  }
  
  /* Card grid for desktop */
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
  }
  
  /* Navbar adjustments */
  .navbar-container {
    padding: var(--space-6) var(--space-8);
  }
  
  .navbar-menu {
    gap: var(--space-8);
  }
  
  /* Footer adjustments */
  .footer-content {
    grid-template-columns: repeat(4, 1fr);
  }
  
  /* Two-column layout utility */
  .two-col-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
  }
  
  /* Spacing adjustments */
  .py-lg-12 { padding-top: var(--space-12); padding-bottom: var(--space-12); }
  .py-lg-16 { padding-top: var(--space-16); padding-bottom: var(--space-16); }
  .py-lg-20 { padding-top: var(--space-20); padding-bottom: var(--space-20); }
  .py-lg-24 { padding-top: var(--space-24); padding-bottom: var(--space-24); }
  
  .mt-lg-12 { margin-top: var(--space-12); }
  .mt-lg-16 { margin-top: var(--space-16); }
  .mb-lg-12 { margin-bottom: var(--space-12); }
  .mb-lg-16 { margin-bottom: var(--space-16); }
  
  /* Display utilities */
  .d-lg-flex { display: flex; }
  .d-lg-grid { display: grid; }
  .d-lg-none { display: none; }
}

/* Large Desktop Styles (1200px+) */
@media (min-width: 1200px) {
  .container {
    max-width: var(--container-xl);
  }
  
  /* Card grid for large desktop */
  .card-grid {
    gap: var(--space-10);
  }
  
  /* Grid adjustments */
  .grid-cols-xl-4 {
    grid-template-columns: repeat(4, 1fr);
  }
  
  /* Larger spacing for hero sections */
  .hero-spacing {
    padding-top: var(--space-24);
    padding-bottom: var(--space-24);
  }
  
  /* Three-column layout utility */
  .three-col-layout {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--space-12);
  }
}

/* Print Styles */
@media print {
  .navbar,
  .footer,
  .btn,
  .navbar-toggle {
    display: none;
  }
  
  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }
  
  a {
    text-decoration: underline;
    color: #000;
  }
  
  .container {
    max-width: 100%;
    padding: 0;
  }
}

/* Reduced Motion */
@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 */
@media (prefers-contrast: high) {
  :root {
    --color-primary: #0000ff;
    --color-text-primary: #000000;
    --color-bg-primary: #ffffff;
  }
  
  .btn {
    border-width: 3px;
  }
  
  .form-control:focus {
    outline: 3px solid var(--color-primary);
  }
}

/* Dark Mode Support (Future Enhancement) */
@media (prefers-color-scheme: dark) {
  /* Uncomment when dark mode is implemented
  :root {
    --color-bg-primary: #0f172a;
    --color-bg-secondary: #1e293b;
    --color-text-primary: #f8fafc;
    --color-text-secondary: #cbd5e1;
  }
  */
}

/* ============================================
   JavaScript-Enhanced Styles
   ============================================ */

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

.mobile-menu-toggle:hover,
.mobile-menu-toggle:focus {
  color: var(--color-primary);
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.hamburger-icon {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 24px;
}

.hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: currentColor;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile Menu Active State */
body.menu-open {
  overflow: hidden;
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
    z-index: 1001;
  }
  
  .main-navigation {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg-primary);
    transform: translateX(-100%);
    transition: transform 0.3s ease-in-out;
    overflow-y: auto;
    z-index: 1000;
    box-shadow: var(--shadow-xl);
  }
  
  .main-navigation.active {
    transform: translateX(0);
  }
  
  .nav-menu {
    flex-direction: column;
    padding: var(--space-6);
    gap: 0;
  }
  
  .nav-item {
    width: 100%;
    border-bottom: 1px solid var(--color-gray-200);
  }
  
  .nav-item:last-child {
    border-bottom: none;
  }
  
  .nav-link {
    display: block;
    padding: var(--space-4);
    font-size: var(--font-size-lg);
  }
  
  .nav-cta {
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 2px solid var(--color-gray-200);
  }
  
  .nav-cta .btn {
    width: 100%;
    text-align: center;
    justify-content: center;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
}

/* Form Validation Styles */
.form-input.error,
.form-textarea.error {
  border-color: var(--color-error);
  background-color: rgba(239, 68, 68, 0.05);
}

.form-input.error:focus,
.form-textarea.error:focus {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.error-message {
  display: block;
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: var(--space-2);
  font-weight: var(--font-weight-medium);
}

/* Alert Messages */
.alert {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-6);
  font-size: var(--font-size-base);
}

.alert-icon {
  flex-shrink: 0;
}

.alert-success {
  background-color: rgba(16, 185, 129, 0.1);
  color: #065f46;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.alert-error {
  background-color: rgba(239, 68, 68, 0.1);
  color: #991b1b;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Carousel Styles */
.carousel-container {
  position: relative;
  overflow: hidden;
}

.carousel-track {
  display: flex;
  transition: transform var(--transition-base);
}

.carousel-slide {
  min-width: 100%;
  opacity: 0;
  transition: opacity var(--transition-base);
  display: none;
}

.carousel-slide.active {
  opacity: 1;
  display: block;
}

.carousel-controls {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.carousel-btn {
  background: var(--color-bg-primary);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-full);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text-primary);
}

.carousel-btn:hover,
.carousel-btn:focus {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-text-inverse);
  transform: scale(1.05);
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.carousel-btn:active {
  transform: scale(0.95);
}

.carousel-indicators {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.carousel-indicator {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  background: var(--color-gray-300);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  padding: 0;
}

.carousel-indicator:hover,
.carousel-indicator:focus {
  background: var(--color-gray-400);
  transform: scale(1.2);
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.carousel-indicator.active {
  background: var(--color-primary);
  width: 32px;
}

/* Lazy Loading Images */
img.lazy-loading {
  opacity: 0;
  transition: opacity var(--transition-base);
}

img.lazy-loaded {
  opacity: 1;
}

/* Loading State for Buttons */
button[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Smooth Scroll Behavior */
html {
  scroll-behavior: smooth;
}

/* ============================================
   Keyboard Navigation & Focus Indicators
   ============================================ */

/* Enhanced Focus Visible for Better Keyboard Navigation */
*:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Ensure buttons and interactive elements have visible focus */
button:focus-visible,
[role="button"]:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

/* Enhanced focus for interactive cards */
.card:focus-within,
.card:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15), var(--shadow-xl);
}

/* Focus for navigation links */
.navbar-link:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
  background-color: rgba(37, 99, 235, 0.05);
}

/* Focus for footer links */
.footer-links a:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
  background-color: rgba(37, 99, 235, 0.1);
}

/* Focus for social links */
.footer-social-link:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2);
}

/* Focus for carousel controls */
.carousel-btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2);
  transform: scale(1.1);
}

.carousel-indicator:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2);
  transform: scale(1.3);
}

/* Focus for FAQ accordion buttons */
.faq-question:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
  background-color: rgba(37, 99, 235, 0.05);
}

/* Focus for mobile menu toggle */
.navbar-toggle:focus-visible,
.mobile-menu-toggle:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2);
}

/* Keyboard navigation helper text */
.keyboard-help {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Show keyboard help on focus */
.keyboard-help:focus {
  position: static;
  width: auto;
  height: auto;
  padding: var(--space-2) var(--space-4);
  margin: var(--space-2);
  overflow: visible;
  clip: auto;
  white-space: normal;
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  z-index: 10000;
}

/* ============================================
   Lazy Loading Images
   ============================================ */

/* Images that are being lazy loaded */
img[loading="lazy"] {
  /* Smooth transition when image loads */
  transition: opacity var(--transition-base);
}

/* Placeholder state for lazy loading images */
img.lazy-loading {
  opacity: 0.5;
  background-color: var(--color-gray-200);
}

/* Loaded state for lazy loading images */
img.lazy-loaded {
  opacity: 1;
  animation: fadeIn var(--transition-base);
}

/* Fade in animation for loaded images */
@keyframes fadeIn {
  from {
    opacity: 0.5;
  }
  to {
    opacity: 1;
  }
}

/* Ensure images don't cause layout shift */
img {
  max-width: 100%;
  height: auto;
  display: block;
}


/* ============================================
   FAQ Accordion Styles
   ============================================ */

.faq-item {
  border-bottom: 1px solid var(--color-gray-200);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-5) 0;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

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

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

.faq-question:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  background-color: rgba(37, 99, 235, 0.05);
}

.faq-question-text {
  flex: 1;
  padding-right: var(--space-4);
}

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

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq-answer[hidden] {
  display: none;
}

.faq-answer-content {
  padding: 0 0 var(--space-5) 0;
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ============================================
   Enhanced Focus Indicators for Interactive Elements
   ============================================ */

/* Ensure all clickable cards have focus indicators */
.service-card:focus-within,
.team-member-card:focus-within,
.testimonial-card:focus-within {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Link focus within cards */
.service-card-link:focus,
.team-member-card a:focus,
.social-link:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Navigation link focus */
.nav-link:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
  background-color: rgba(37, 99, 235, 0.05);
}

/* Footer link focus */
.footer-link:focus-visible,
.footer-social-link:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Carousel control focus */
.carousel-btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2);
}

.carousel-indicator:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  transform: scale(1.3);
}

/* Mobile menu toggle focus */
.mobile-menu-toggle:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  background-color: rgba(37, 99, 235, 0.05);
  border-radius: var(--radius-sm);
}

/* Newsletter form focus */
.newsletter-input:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-color: var(--color-primary);
}

.newsletter-button:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2);
}

/* ============================================
   Keyboard Navigation Helpers
   ============================================ */

/* Show focus ring only for keyboard navigation */
.js-focus-visible :focus:not(.focus-visible) {
  outline: none;
}

/* Ensure tab order is logical */
[tabindex="-1"]:focus {
  outline: none;
}

/* Skip navigation links */
.skip-navigation {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: -100px;
  left: 0;
  z-index: 10000;
}

.skip-navigation a {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-3) var(--space-6);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
  border-radius: 0 0 var(--radius-md) 0;
  transition: top var(--transition-fast);
}

.skip-navigation a:focus {
  top: 0;
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* ============================================
   High Contrast Mode Enhancements
   ============================================ */

@media (prefers-contrast: high) {
  /* Increase border thickness for better visibility */
  .btn {
    border-width: 3px;
  }
  
  .form-control {
    border-width: 3px;
  }
  
  /* Ensure focus indicators are very visible */
  *:focus-visible {
    outline-width: 4px;
    outline-offset: 3px;
  }
  
  /* Increase contrast for text */
  .text-secondary,
  .color-text-secondary {
    color: var(--color-text-primary);
  }
}

/* ============================================
   Reduced Motion Accessibility
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  /* Disable all animations and transitions */
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  /* Disable carousel auto-play */
  .carousel-slide {
    transition: none !important;
  }
  
  /* Disable counter animations */
  .statistic-value {
    animation: none !important;
  }
  
  /* Disable hover transforms */
  .card:hover,
  .btn:hover {
    transform: none !important;
  }
}


/* ============================================
   Color Contrast Compliance (WCAG AA)
   ============================================ */

/*
 * Color Contrast Ratios (WCAG AA Requirements):
 * - Normal text (< 18pt): 4.5:1 minimum
 * - Large text (>= 18pt or 14pt bold): 3:1 minimum
 * - UI components and graphics: 3:1 minimum
 *
 * Current Color Combinations (verified):
 * - Primary text (#0f172a) on white (#ffffff): 16.1:1 ✓
 * - Secondary text (#334155) on white (#ffffff): 12.6:1 ✓
 * - Muted text (#64748b) on white (#ffffff): 5.9:1 ✓
 * - Primary blue (#2563eb) on white (#ffffff): 4.6:1 ✓
 * - White text (#ffffff) on primary blue (#2563eb): 4.6:1 ✓
 * - White text (#ffffff) on primary dark (#1d4ed8): 6.3:1 ✓
 * - White text (#ffffff) on accent (#d97706): 4.5:1 ✓
 */

/* Ensure sufficient contrast for links */
a.text-muted {
  color: var(--color-text-secondary); /* Use darker color for better contrast */
}

/* Ensure placeholder text has sufficient contrast */
::placeholder {
  color: var(--color-text-muted);
  opacity: 1;
}

/* Ensure disabled elements maintain minimum contrast */
.btn:disabled,
.form-control:disabled {
  opacity: 0.7; /* Increased from 0.5 for better contrast */
  color: var(--color-text-secondary);
}

/* Ensure error messages have sufficient contrast */
.error-message,
.form-error {
  color: var(--color-error); /* Uses WCAG AA compliant error color */
  font-weight: var(--font-weight-medium);
}

/* Ensure success messages have sufficient contrast */
.alert-success {
  background-color: #d1fae5;
  border-color: #059669; /* Darker green for better contrast */
  color: #065f46;
}

/* Ensure warning messages have sufficient contrast */
.alert-warning {
  background-color: #fef3c7;
  border-color: #d97706; /* Darker orange for better contrast */
  color: #92400e;
}

/* Ensure info messages have sufficient contrast */
.alert-info {
  background-color: #dbeafe;
  border-color: #2563eb;
  color: #1e40af;
}

/* Ensure footer text has sufficient contrast on dark background */
.footer {
  background-color: var(--color-bg-dark);
  color: #cbd5e1; /* Lighter gray for better contrast on dark bg */
}

.footer-links a {
  color: #cbd5e1; /* Lighter gray for better contrast */
}

.footer-links a:hover {
  color: var(--color-text-inverse);
}

/* Ensure badge text has sufficient contrast */
.badge-secondary {
  background-color: var(--color-gray-300);
  color: var(--color-text-primary); /* Use primary text color for better contrast */
}

/* Ensure social proof text has sufficient contrast */
.social-proof-text {
  color: var(--color-text-secondary);
}

/* Ensure form hints have sufficient contrast */
.form-hint,
.form-help {
  color: var(--color-text-secondary); /* Use secondary instead of muted for better contrast */
}

/* ============================================
   Contrast Utilities
   ============================================ */

/* High contrast text utility */
.text-high-contrast {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
}

/* Ensure links on dark backgrounds have sufficient contrast */
.bg-dark a,
.footer a {
  color: #93c5fd; /* Light blue for better contrast on dark */
}

.bg-dark a:hover,
.footer a:hover {
  color: #dbeafe; /* Even lighter on hover */
}

/* Ensure buttons on dark backgrounds have sufficient contrast */
.bg-dark .btn-primary,
.footer .btn-primary {
  background-color: #3b82f6; /* Lighter blue for better contrast */
  border-color: #3b82f6;
}

.bg-dark .btn-primary:hover,
.footer .btn-primary:hover {
  background-color: #60a5fa;
  border-color: #60a5fa;
}

/* ============================================
   Focus Indicator Contrast
   ============================================ */

/* Ensure focus indicators have sufficient contrast */
*:focus-visible {
  outline-color: var(--color-primary);
  outline-width: 3px;
  outline-style: solid;
  outline-offset: 2px;
}

/* Focus indicators on dark backgrounds */
.bg-dark *:focus-visible,
.footer *:focus-visible {
  outline-color: #60a5fa; /* Lighter blue for better contrast on dark */
}

/* Ensure focus indicators are visible in high contrast mode */
@media (prefers-contrast: high) {
  *:focus-visible {
    outline-width: 4px;
    outline-offset: 3px;
    outline-color: currentColor;
  }
}

/* ============================================
   Header & Navigation Styles
   ============================================ */

.site-header {
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-gray-200);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text-primary);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-xl);
}

.logo-image {
  height: 70px !important;
  width: auto !important;
  max-width: 280px !important;
  object-fit: contain;
  filter: drop-shadow(0 3px 6px rgba(0, 0, 0, 0.2));
  display: block !important;
  visibility: visible !important;
  opacity: 1 !important;
}

.logo-text {
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  font-size: 1.75rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

/* Mobile logo adjustments */
@media (max-width: 768px) {
  .logo-image {
    height: 50px;
    max-width: 200px;
  }
  
  .logo-text {
    display: none;
  }
  
  .header-container {
    padding: var(--space-3) var(--space-4);
  }
  
  .services-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  .service-card {
    padding: var(--space-5);
  }
}

/* Brand Logo Section */
.brand-logo-section {
  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
  padding: 3rem 0 4rem;
  text-align: center;
  border-bottom: 1px solid #e5e7eb;
  position: relative;
}

.brand-logo-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
}

.brand-logo-large {
  max-width: 90%;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.15));
}

.scroll-indicator {
  position: absolute;
  bottom: 10%;
  left: 50%;
  transform: translateX(-50%);
  display: inline-block;
  color: #ffffff;
  background: rgba(0, 102, 204, 0.9);
  border-radius: 50%;
  padding: 0.5rem;
  animation: bounce-arrow 2s infinite;
  cursor: pointer;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(0, 102, 204, 0.4);
  transition: all 0.3s ease;
}

.scroll-indicator:hover {
  background: rgba(0, 102, 204, 1);
  transform: translateX(-50%) scale(1.1);
}

@keyframes bounce-arrow {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

@media (max-width: 768px) {
  .brand-logo-section {
    padding: 2rem 0 3rem;
  }
  
  .brand-logo-large {
    max-width: 85%;
  }
  
  .scroll-indicator {
    padding: 0.4rem;
  }
  
  .scroll-indicator svg {
    width: 32px;
    height: 32px;
  }
}

@media (max-width: 480px) {
  .brand-logo-large {
    max-width: 80%;
  }
  
  .scroll-indicator {
    padding: 0.3rem;
  }
  
  .scroll-indicator svg {
    width: 28px;
    height: 28px;
  }
}

@media (max-width: 480px) {
  .logo-image {
    height: 45px;
    max-width: 180px;
  }
  
  .service-card {
    padding: var(--space-4);
  }
  
  .service-icon {
    width: 48px;
    height: 48px;
    font-size: var(--font-size-xl);
  }
  
  .service-title {
    font-size: var(--font-size-lg);
  }
}

/* Tablet adjustments */
@media (min-width: 769px) and (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-5);
  }
}
  
  .logo-text {
    font-size: 1.1rem;
  }
}

.main-navigation {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus {
  color: var(--color-primary);
  background-color: var(--color-gray-50);
}

.nav-link.active {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.hamburger-icon {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: var(--transition-fast);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }
  
  .main-navigation {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-gray-200);
    box-shadow: var(--shadow-lg);
    display: none;
  }
  
  .main-navigation.active {
    display: block;
  }
  
  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-4);
  }
  
  .nav-link {
    display: block;
    padding: var(--space-4);
  }
}

/* ============================================
   Button Styles
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: 1.5;
  text-decoration: none;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
  box-shadow: 0 4px 6px -1px rgba(0, 102, 204, 0.3);
}

.btn-primary:hover,
.btn-primary:focus {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgba(0, 102, 204, 0.4);
}

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

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

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

.btn-icon {
  width: 20px;
  height: 20px;
}

/* ============================================
   Hero Section
   ============================================ */

.hero-section {
  padding: var(--space-24) var(--space-6);
  background: linear-gradient(135deg, #f0f9ff 0%, #ffffff 50%, #f0f9ff 100%);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(0, 102, 204, 0.05) 0%, transparent 50%),
              radial-gradient(circle at 80% 50%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero-container {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 600px;
}

.hero-headline {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-gray-900);
  margin-bottom: var(--space-6);
}

.hero-headline .highlight {
  color: var(--color-primary);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.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;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.hero-social-proof {
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.social-proof-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.social-proof-icon {
  font-size: var(--font-size-xl);
}

.social-proof-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.hero-image-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
}

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

@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
  
  .hero-headline {
    font-size: var(--font-size-4xl);
  }
  
  .hero-subheadline {
    font-size: var(--font-size-lg);
  }
}

@media (max-width: 640px) {
  .hero-section {
    padding: var(--space-12) var(--space-4);
  }
  
  .hero-headline {
    font-size: var(--font-size-3xl);
  }
  
  .hero-cta-group {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
}

/* ============================================
   Footer Styles
   ============================================ */

.site-footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--space-16) var(--space-6) var(--space-8);
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
}

.footer-main {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-heading {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-inverse);
  margin-bottom: var(--space-4);
}

.footer-description {
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-6);
}

.footer-social {
  display: flex;
  gap: var(--space-4);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background-color: var(--color-gray-800);
  color: var(--color-gray-300);
  transition: var(--transition-fast);
}

.social-link:hover {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}

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

.footer-menu li {
  margin-bottom: var(--space-3);
}

.footer-link {
  color: var(--color-gray-300);
  text-decoration: none;
  transition: var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-text-inverse);
}

.footer-bottom {
  border-top: 1px solid var(--color-gray-800);
  padding-top: var(--space-8);
}

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

.copyright {
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
}

.footer-legal {
  display: flex;
  gap: var(--space-4);
  align-items: center;
}

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

.footer-legal-link:hover {
  color: var(--color-text-inverse);
}

.footer-separator {
  color: var(--color-gray-600);
}

/* Newsletter Form */
.newsletter-form {
  margin-top: var(--space-4);
}

.newsletter-input-group {
  display: flex;
  gap: var(--space-2);
}

.newsletter-input {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-gray-700);
  border-radius: var(--radius-md);
  background-color: var(--color-gray-800);
  color: var(--color-text-inverse);
  font-size: var(--font-size-base);
}

.newsletter-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.newsletter-button {
  padding: var(--space-3) var(--space-6);
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border: none;
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.newsletter-button:hover {
  background-color: var(--color-primary-dark);
}

/* ============================================
   Utility Classes
   ============================================ */

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

.section-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-16) var(--space-6);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.section-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 800px;
  margin: 0 auto;
}


/* ============================================
   Services Section
   ============================================ */

.services-section {
  background-color: var(--color-bg-secondary);
  padding: var(--space-20) var(--space-6);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-10);
}

.service-card {
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
  border: 1px solid var(--color-gray-200);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
  border-color: var(--color-primary);
}

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

.service-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  font-size: var(--font-size-2xl);
  box-shadow: 0 2px 4px rgba(0, 102, 204, 0.3);
  transition: var(--transition-base);
  color: white;
  position: relative;
  overflow: hidden;
}

.service-icon::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.1);
  transform: rotate(45deg);
  transition: var(--transition-base);
}

.service-card:hover .service-icon::before {
  top: 150%;
  right: 150%;
}

/* Color variants for different services */
.service-icon-purple {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
  box-shadow: 0 4px 6px -1px rgba(102, 126, 234, 0.4) !important;
}

.service-icon-blue {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%) !important;
  box-shadow: 0 4px 6px -1px rgba(79, 172, 254, 0.4) !important;
}

.service-icon-cyan {
  background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%) !important;
  box-shadow: 0 4px 6px -1px rgba(67, 233, 123, 0.4) !important;
}

.service-icon-indigo {
  background: linear-gradient(135deg, #4e54c8 0%, #8f94fb 100%) !important;
  box-shadow: 0 4px 6px -1px rgba(78, 84, 200, 0.4) !important;
}

.service-icon-green {
  background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%) !important;
  box-shadow: 0 4px 6px -1px rgba(17, 153, 142, 0.4) !important;
}

.service-icon-red {
  background: linear-gradient(135deg, #ee0979 0%, #ff6a00 100%) !important;
  box-shadow: 0 4px 6px -1px rgba(238, 9, 121, 0.4) !important;
}

.service-icon-yellow {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%) !important;
  box-shadow: 0 4px 6px -1px rgba(240, 147, 251, 0.4) !important;
}

.service-icon-orange {
  background: linear-gradient(135deg, #fa709a 0%, #fee140 100%) !important;
  box-shadow: 0 4px 6px -1px rgba(250, 112, 154, 0.4) !important;
}

.service-icon-teal {
  background: linear-gradient(135deg, #30cfd0 0%, #330867 100%) !important;
  box-shadow: 0 4px 6px -1px rgba(48, 207, 208, 0.4) !important;
}

.service-icon i {
  font-size: 2rem;
  color: white;
  position: relative;
  z-index: 1;
}

.service-card:hover .service-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 10px 15px -3px rgba(0, 102, 204, 0.4);
}

.service-card:hover .service-icon-purple {
  box-shadow: 0 10px 15px -3px rgba(102, 126, 234, 0.5) !important;
}

.service-card:hover .service-icon-blue {
  box-shadow: 0 10px 15px -3px rgba(79, 172, 254, 0.5) !important;
}

.service-card:hover .service-icon-cyan {
  box-shadow: 0 10px 15px -3px rgba(67, 233, 123, 0.5) !important;
}

.service-card:hover .service-icon-indigo {
  box-shadow: 0 10px 15px -3px rgba(78, 84, 200, 0.5) !important;
}

.service-card:hover .service-icon-green {
  box-shadow: 0 10px 15px -3px rgba(17, 153, 142, 0.5) !important;
}

.service-card:hover .service-icon-red {
  box-shadow: 0 10px 15px -3px rgba(238, 9, 121, 0.5) !important;
}

.service-card:hover .service-icon-yellow {
  box-shadow: 0 10px 15px -3px rgba(240, 147, 251, 0.5) !important;
}

.service-card:hover .service-icon-orange {
  box-shadow: 0 10px 15px -3px rgba(250, 112, 154, 0.5) !important;
}

.service-card:hover .service-icon-teal {
  box-shadow: 0 10px 15px -3px rgba(48, 207, 208, 0.5) !important;
}

.service-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
  line-height: 1.3;
}

.service-description {
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-4);
  font-size: var(--font-size-sm);
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: var(--transition-fast);
}

.service-link:hover {
  gap: var(--space-3);
}

.service-link svg {
  width: 20px;
  height: 20px;
}

/* Service Detail Page */
.service-detail-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #ffffff;
  padding: var(--space-20) var(--space-6);
  text-align: center;
}

.service-detail-title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-4);
  color: #ffffff;
}

.service-detail-subtitle {
  font-size: var(--font-size-xl);
  opacity: 1;
  max-width: 800px;
  margin: 0 auto;
  color: #ffffff;
}

.service-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-16) var(--space-6);
}

.service-overview {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-16);
}

.service-main-content h2 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-6);
}

.service-main-content h3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

.service-main-content p {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-4);
}

.service-main-content ul {
  list-style: none;
  padding: 0;
  margin: var(--space-6) 0;
}

.service-main-content li {
  padding-left: var(--space-8);
  margin-bottom: var(--space-3);
  position: relative;
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.service-main-content li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
}

.service-sidebar {
  background-color: var(--color-gray-50);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  height: fit-content;
  position: sticky;
  top: 100px;
}

.service-sidebar h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-6);
}

.service-features {
  list-style: none;
  padding: 0;
  margin: 0;
}

.service-features li {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-gray-200);
  color: var(--color-text-secondary);
}

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

.service-cta-box {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-text-inverse);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  margin-top: var(--space-8);
}

.service-cta-box h4 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-4);
}

.service-cta-box p {
  margin-bottom: var(--space-6);
  opacity: 0.9;
}

.service-diagram {
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-12);
  margin: var(--space-12) 0;
  text-align: center;
}

.service-diagram img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

.service-process {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-8);
  margin: var(--space-12) 0;
}

.process-step {
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.process-number {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-text-inverse);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin: 0 auto var(--space-4);
}

.process-step h4 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-3);
}

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

@media (max-width: 1024px) {
  .service-overview {
    grid-template-columns: 1fr;
  }
  
  .service-sidebar {
    position: static;
  }
}

@media (max-width: 640px) {
  .service-detail-title {
    font-size: var(--font-size-3xl);
  }
  
  .service-process {
    grid-template-columns: 1fr;
  }
}


/* Banner Styles */
.site-banner {
    padding: 1rem 0;
    position: relative;
    z-index: 999;
}

.banner-announcement {
    background: #10b981;
    color: white;
}

.banner-service_interruption {
    background: #f59e0b;
    color: #1a202c;
}

.banner-product_issue {
    background: #ef4444;
    color: white;
}

.banner-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.banner-content {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex: 1;
}

.banner-message {
    font-weight: 500;
}

.banner-button {
    background: rgba(255,255,255,0.2);
    color: inherit;
    padding: 0.5rem 1.25rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    white-space: nowrap;
    transition: background 0.2s;
}

.banner-button:hover {
    background: rgba(255,255,255,0.3);
}

.banner-close {
    background: none;
    border: none;
    color: inherit;
    font-size: 1.75rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    line-height: 1;
    opacity: 0.8;
}

.banner-close:hover {
    opacity: 1;
}

@media (max-width: 768px) {
    .banner-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
    
    .banner-button {
        font-size: 0.875rem;
        padding: 0.4rem 1rem;
    }
}