/* ==========================================================================
   GeoTools Web Platform - Design Tokens & Variables (Clean Light Geological Theme)
   ========================================================================== */

:root {
  /* Color Palette - Core (Clean Light Theme) */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.88);

  /* GeoTools Brand Accents */
  --primary-emerald: #00897b;
  --primary-emerald-glow: rgba(0, 137, 123, 0.22);
  --primary-dark: #005b52;
  --primary-light: #00a88f;
  
  /* Geological Accents */
  --accent-amber: #d97706;
  --accent-amber-glow: rgba(217, 119, 6, 0.22);
  --accent-orange: #ea580c;
  --accent-blue: #0284c7;
  --accent-red: #dc2626;
  --accent-purple: #7c3aed;

  /* Lithology Classification Colors */
  --litho-sandstone: #f59e0b;
  --litho-shale: #64748b;
  --litho-limestone: #2563eb;
  --litho-granite: #db2777;
  --litho-basalt: #334155;
  --litho-andesite: #7c3aed;
  --litho-conglomerate: #ea580c;

  /* Typography */
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

  /* Text Colors (High Contrast) */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  /* Borders & Dividers */
  --border-subtle: #e2e8f0;
  --border-medium: #cbd5e1;
  --border-glow: rgba(0, 137, 123, 0.4);

  /* Elevation / Shadows (Soft Natural Drop Shadows) */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 6px 20px -2px rgba(0, 0, 0, 0.07), 0 2px 6px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 16px 36px -4px rgba(0, 0, 0, 0.1), 0 6px 14px -2px rgba(0, 0, 0, 0.05);
  --shadow-glow: 0 0 20px var(--primary-emerald-glow);
  --shadow-amber-glow: 0 0 20px var(--accent-amber-glow);

  /* Layout & Sizing */
  --container-max-width: 1240px;
  --header-height: 86px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}