/**
 * Base Styles - Variables, Typography, and Common Utilities
 * Contains CSS custom properties, base typography, and utility classes
 */

/* CSS Custom Properties (Variables) */
:root {
  /* Color Palette */
  --primary-color: #222de7;
  --secondary-color: #01613c;
  --accent-color: #f2ff00;
  --success-color: #69a96d;
  --warning-color: #FFC300;
  --danger-color: #CB4335;
  --info-color: #0088cc;
  
  /* Neutral Colors */
  --white: #ffffff;
  --black: #000000;
  --gray-light: #f8f9fa;
  --gray: #999999;
  --gray-dark: #333333;
  
  /* Map Colors */
  --map-background: #808080;
  --waypoint-alert-bg: var(--accent-color);
  --stella-alert-bg: var(--accent-color);
  
  /* Spacing */
  --spacing-xs: 3px;
  --spacing-sm: 5px;
  --spacing-md: 10px;
  --spacing-lg: 15px;
  --spacing-xl: 20px;
  
  /* Border Radius */
  --border-radius-sm: 3px;
  --border-radius-md: 5px;
  --border-radius-lg: 10px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-Index Layers */
  --z-base: 1;
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
  --z-waypoint-alert: 9999;
  
  /* Viewport-based sizing */
  --vh-full: 100vh;
  --vw-full: 100vw;
  
  /* Font Sizes */
  --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;
}

/* Base Typography */
body,
html {
  height: 90%;
  font-size: 19px;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  line-height: 1.4;
  color: var(--gray-dark);
  background-color: var(--white);
}

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

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

.d-none { display: none !important; }
.d-block { display: block !important; }
.d-inline { display: inline !important; }
.d-inline-block { display: inline-block !important; }
.d-flex { display: flex !important; }

.visible { visibility: visible !important; }
.invisible { visibility: hidden !important; }

.position-relative { position: relative !important; }
.position-absolute { position: absolute !important; }
.position-fixed { position: fixed !important; }
.position-static { position: static !important; }

/* Spacing Utilities */
.m-0 { margin: 0 !important; }
.m-1 { margin: var(--spacing-xs) !important; }
.m-2 { margin: var(--spacing-sm) !important; }
.m-3 { margin: var(--spacing-md) !important; }
.m-4 { margin: var(--spacing-lg) !important; }
.m-5 { margin: var(--spacing-xl) !important; }

.p-0 { padding: 0 !important; }
.p-1 { padding: var(--spacing-xs) !important; }
.p-2 { padding: var(--spacing-sm) !important; }
.p-3 { padding: var(--spacing-md) !important; }
.p-4 { padding: var(--spacing-lg) !important; }
.p-5 { padding: var(--spacing-xl) !important; }

/* Color Utilities */
.text-primary { color: var(--primary-color) !important; }
.text-secondary { color: var(--secondary-color) !important; }
.text-success { color: var(--success-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-danger { color: var(--danger-color) !important; }
.text-info { color: var(--info-color) !important; }
.text-white { color: var(--white) !important; }
.text-black { color: var(--black) !important; }

.bg-primary { background-color: var(--primary-color) !important; }
.bg-secondary { background-color: var(--secondary-color) !important; }
.bg-success { background-color: var(--success-color) !important; }
.bg-warning { background-color: var(--warning-color) !important; }
.bg-danger { background-color: var(--danger-color) !important; }
.bg-info { background-color: var(--info-color) !important; }
.bg-white { background-color: var(--white) !important; }
.bg-black { background-color: var(--black) !important; }

/* Border Utilities */
.border { border: 1px solid var(--gray) !important; }
.border-0 { border: 0 !important; }
.border-primary { border-color: var(--primary-color) !important; }
.border-secondary { border-color: var(--secondary-color) !important; }

.rounded { border-radius: var(--border-radius-md) !important; }
.rounded-sm { border-radius: var(--border-radius-sm) !important; }
.rounded-lg { border-radius: var(--border-radius-lg) !important; }
.rounded-circle { border-radius: 50% !important; }

/* Animation Utilities */
.blinker {
  animation: blinker 1s linear infinite;
}

@keyframes blinker {
  50% {
    opacity: 0.5;
  }
}

/* Transitions */
.transition-fast { transition: all var(--transition-fast); }
.transition-normal { transition: all var(--transition-normal); }
.transition-slow { transition: all var(--transition-slow); }

/* Focus and Accessibility */
*:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --primary-color: #0000ff;
    --secondary-color: #008000;
    --gray: #666666;
    --gray-dark: #000000;
  }
}

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