:root {
  /* ===========================================
     COLOR SYSTEM - Green & White Palette
     =========================================== */
  --color-primary: #1B5E20;
  --color-primary-hover: #145214;
  --color-primary-light: #2E7D32;
  --color-primary-lighter: #4CAF50;
  --color-primary-50: #E8F5E9;
  --color-primary-100: #C8E6C9;
  --color-primary-200: #A5D6A7;
  --color-primary-300: #81C784;
  --color-primary-400: #66BB6A;
  --color-primary-500: #4CAF50;
  --color-primary-600: #43A047;
  --color-primary-700: #388E3C;
  --color-primary-800: #2E7D32;
  --color-primary-900: #1B5E20;

  --color-secondary: #FF6F00;
  --color-secondary-hover: #E65100;
  --color-secondary-light: #FF8F00;
  --color-secondary-50: #FFF3E0;
  --color-secondary-100: #FFE0B2;

  --color-accent: #1565C0;
  --color-accent-hover: #0D47A1;
  --color-accent-light: #1976D2;
  --color-accent-50: #E3F2FD;

  --color-success: #2E7D32;
  --color-success-light: #4CAF50;
  --color-success-50: #E8F5E9;

  --color-warning: #F57C00;
  --color-warning-light: #FF9800;
  --color-warning-50: #FFF3E0;

  --color-error: #C62828;
  --color-error-light: #EF5350;
  --color-error-50: #FDEDEC;

  --color-info: #0288D1;
  --color-info-light: #03A9F4;
  --color-info-50: #E1F5FE;

  /* ===========================================
     NEUTRAL COLORS
     =========================================== */
  --color-white: #FFFFFF;
  --color-black: #000000;

  --color-surface: #FFFFFF;
  --color-surface-variant: #F5F5F5;
  --color-surface-container: #EEEEEE;
  --color-surface-container-high: #E0E0E0;
  --color-surface-container-highest: #D5D5D5;

  --color-on-surface: #1C1C1C;
  --color-on-surface-variant: #49454F;
  --color-on-surface-disabled: #9E9E9E;

  --color-outline: #E0E0E0;
  --color-outline-variant: #EEEEEE;
  --color-outline-strong: #BDBDBD;

  /* ===========================================
     GLASSMORPHISM
     =========================================== */
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-bg-strong: rgba(255, 255, 255, 0.95);
  --glass-border: rgba(255, 255, 255, 0.3);
  --glass-border-strong: rgba(255, 255, 255, 0.5);
  --glass-blur: blur(20px);
  --glass-blur-strong: blur(40px);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  --glass-shadow-strong: 0 16px 48px rgba(0, 0, 0, 0.12);

  /* ===========================================
     SHADOWS (Layered)
     =========================================== */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1), 0 10px 10px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.15);
  --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.06);

  /* ===========================================
     BORDER RADIUS
     =========================================== */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* ===========================================
     SPACING SCALE (8px base)
     =========================================== */
  --space-0: 0;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 28px;
  --space-8: 32px;
  --space-9: 36px;
  --space-10: 40px;
  --space-12: 48px;
  --space-14: 56px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  --space-28: 112px;
  --space-32: 128px;

  /* ===========================================
     TYPOGRAPHY
     =========================================== */
  --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;
  --font-arabic: 'Noto Sans Arabic', 'Segoe UI', system-ui, sans-serif;

  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-lg: 1.125rem;   /* 18px */
  --text-xl: 1.25rem;    /* 20px */
  --text-2xl: 1.5rem;    /* 24px */
  --text-3xl: 1.875rem;  /* 30px */
  --text-4xl: 2.25rem;   /* 36px */
  --text-5xl: 3rem;      /* 48px */
  --text-6xl: 3.75rem;   /* 60px */

  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  --leading-tight: 1.1;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;

  /* ===========================================
     TRANSITIONS & ANIMATIONS
     =========================================== */
  --ease-linear: linear;
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);

  --duration-instant: 0ms;
  --duration-fast: 100ms;
  --duration-base: 150ms;
  --duration-normal: 200ms;
  --duration-slow: 300ms;
  --duration-slower: 400ms;
  --duration-slowest: 500ms;

  /* ===========================================
     Z-INDEX SCALE
     =========================================== */
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
  --z-toast: 800;
  --z-max: 9999;

  /* ===========================================
     LAYOUT
     =========================================== */
  --container-max: 1440px;
  --container-padding: 24px;
  --header-height: 64px;
  --header-height-mobile: 56px;
  --sidebar-width-collapsed: 72px;
  --sidebar-width-expanded: 280px;
  --map-controls-width: 56px;
  --bottom-card-height-collapsed: 120px;
  --bottom-card-height-expanded: 400px;

  /* ===========================================
     BREAKPOINTS
     =========================================== */
  --bp-xs: 320px;
  --bp-sm: 480px;
  --bp-md: 768px;
  --bp-lg: 1024px;
  --bp-xl: 1280px;
  --bp-2xl: 1536px;
}

/* ===========================================
   DARK MODE
   =========================================== */
[data-theme="dark"] {
  --color-surface: #1A1A1A;
  --color-surface-variant: #242424;
  --color-surface-container: #2D2D2D;
  --color-surface-container-high: #383838;
  --color-surface-container-highest: #404040;

  --color-on-surface: #E0E0E0;
  --color-on-surface-variant: #B0B0B0;
  --color-on-surface-disabled: #6E6E6E;

  --color-outline: #333333;
  --color-outline-variant: #2D2D2D;
  --color-outline-strong: #4A4A4A;

  --glass-bg: rgba(26, 26, 26, 0.85);
  --glass-bg-strong: rgba(26, 26, 26, 0.95);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-border-strong: rgba(255, 255, 255, 0.15);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --glass-shadow-strong: 0 16px 48px rgba(0, 0, 0, 0.4);

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2), 0 1px 2px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.2), 0 2px 4px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.25), 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.3), 0 10px 10px rgba(0, 0, 0, 0.15);
}

/* ===========================================
   REDUCED MOTION
   =========================================== */
@media (prefers-reduced-motion: reduce) {
  :root {
    --duration-instant: 0ms;
    --duration-fast: 0ms;
    --duration-base: 0ms;
    --duration-normal: 0ms;
    --duration-slow: 0ms;
    --duration-slower: 0ms;
    --duration-slowest: 0ms;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===========================================
   HIGH CONTRAST
   =========================================== */
@media (prefers-contrast: high) {
  :root {
    --glass-bg: var(--color-surface);
    --glass-bg-strong: var(--color-surface);
    --glass-border: var(--color-outline);
    --glass-blur: none;
    --glass-shadow: var(--shadow-lg);
  }
}

/* ===========================================
   PRINT STYLES
   =========================================== */
@media print {
  .no-print,
  .navbar,
  .map-controls,
  .sidebar,
  .search-bar,
  .bottom-card,
  .park-info-card,
  .modal,
  .toast {
    display: none !important;
  }

  #map {
    height: 100vh !important;
    page-break-inside: avoid;
  }

  body {
    background: white !important;
    color: black !important;
  }
}