/* ==========================================================================
   PropNetwork Design System - Light Theme CSS Variables & Design Tokens
   Author: PropNetwork Architecture Team
   Description: Centralized design tokens (colors, typography, shadows, elevation).
   ========================================================================== */

:root {
  /* Design Tokens — Product Design System */
  --background: #fafafa;
  /* page background */
  --card-bg: #ffffff;
  /* cards, nav, footer */
  --text-dark: #0f172a;
  /* headlines, primary text */
  --text-light: #64748b;
  /* subtext, descriptions */
  --muted: #94a3b8;
  /* captions, meta text */
  --border: #e2e8f0;
  /* hairlines, card borders */

  --primary: #0F766E;
  /* teal — CTAs, links, active states, verified badge */
  --blue-50: #f0fdfa;
  /* tinted section backgrounds */
  --blue-100: #ccfbf1;
  /* pill/badge backgrounds */
  --blue-400: #14b8a6;
  /* hover states, secondary teal accents */
  --blue-600: #0d9488;
  /* pressed/darker teal */

  --success: #22c55e;
  /* verified checkmarks, positive stats */
  --green-50: #f0fdf4;
  /* success-tinted backgrounds */

  --purple-500: #8B5CF6;
  /* premium/CP badges only — use sparingly */
  --purple-50: #faf5ff;
  /* premium-tinted background */

  --yellow: #ffc107;
  /* "hot property" / urgency tags only */
  --error: #ef4444;
  /* errors only */

  /* Legacy Compatibility Variables */
  --dark-bg: var(--background);
  --dark-card: var(--card-bg);
  --dark-card-hover: var(--card-bg);
  --glass-bg: var(--card-bg);
  --text-primary: var(--text-dark);
  --text-secondary: var(--text-light);
  --border-color: var(--border);

  /* Typography Design Tokens (Unified Navbar Sans-Serif Font Family) */
  --font-heading: 'Geist', 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Geist', 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Font Weights */
  --fw-light: 300;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-extrabold: 800;

  /* Spacing System */
  --spacing-xs: 0.25rem;
  /* 4px */
  --spacing-sm: 0.5rem;
  /* 8px */
  --spacing-md: 1rem;
  /* 16px */
  --spacing-lg: 1.5rem;
  /* 24px */
  --spacing-xl: 2.5rem;
  /* 40px */
  --spacing-xxl: 4rem;
  /* 64px */

  /* Border Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 9999px;

  /* Elevation & Soft Shadows (Unified Signature Card Shadow System) */
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 8px 24px -6px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 16px 36px -8px rgba(15, 23, 42, 0.09);
  --shadow-card: 0 10px 30px -10px rgba(15, 23, 42, 0.05), 0 2px 8px rgba(15, 23, 42, 0.02);
  --shadow-card-hover: 0 20px 40px -12px rgba(15, 118, 110, 0.12), 0 4px 12px rgba(15, 23, 42, 0.04);

  /* Transitions */
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-Index Hierarchy */
  --z-back: -1;
  --z-normal: 1;
  --z-tooltip: 10;
  --z-fixed: 100;
  --z-navbar: 1000;
  --z-modal: 2000;
}