/* ============================================
   BC DEVELOPMENT DESIGN SYSTEM
   Premium Single-Color Real-Estate Dashboard
   Inspired by: Linear, Notion, Monday.com
============================================ */

:root {
  /* === BRAND COLORS (Van je logo) === */
  --color-navy-900: #1e3a52;
  --color-navy-800: #243b53;
  --color-navy-700: #334e68;
  --color-navy-600: #486581;
  --color-navy-500: #627d98;
  
  --color-gold-500: #b8975a;
  --color-gold-600: #9f7d3f;
  --color-gold-700: #7d5f2e;

  /* === NEUTRAL PALETTE (Light Mode) === */
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* === PREMIUM CATEGORY STYLE (Single Color) === */
  --category-bg: #f0f4f8;
  --category-border: #d9e2ec;
  --category-text: #334e68;
  --category-text-hover: #1e3a52;
  --category-hover-bg: #e6eef5;
  --category-hover-border: #b8975a;

  /* === SEMANTIC COLORS === */
  --color-success: #00c875;
  --color-success-bg: #e9f9f0;
  --color-warning: #ffcb00;
  --color-warning-bg: #fff9e6;
  --color-error: #e44258;
  --color-error-bg: #ffe9ed;
  --color-info: #0073ea;
  --color-info-bg: #e9f2ff;

  /* === SPACING === */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  /* === RADIUS === */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* === SHADOWS (Monday.com style) === */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 8px 32px rgba(0, 0, 0, 0.16);
  --shadow-card: 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 6px 16px rgba(0, 0, 0, 0.12);

  /* === TYPOGRAPHY === */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;

  --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 */

  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* === THEME VARIABLES (Switchable) === */
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --bg-elevated: #ffffff;
  
  --text-primary: #111827;
  --text-secondary: #6b7280;
  --text-tertiary: #9ca3af;
  --text-inverse: #ffffff;

  --border-light: #e5e7eb;
  --border-medium: #d1d5db;
  --border-dark: #9ca3af;

  --accent-primary: var(--color-navy-900);
  --accent-secondary: var(--color-gold-500);
  --accent-hover: var(--color-navy-800);
}

/* === DARK MODE === */
[data-theme="dark"] {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #1f2937;
  --bg-elevated: #161b22;
  
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --text-tertiary: #6e7681;
  --text-inverse: #0d1117;

  --border-light: #30363d;
  --border-medium: #484f58;
  --border-dark: #6e7681;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.5);
  --shadow-card: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-card-hover: 0 6px 16px rgba(0, 0, 0, 0.5);

  /* Dark mode category colors */
  --category-bg: #1f2937;
  --category-border: #374151;
  --category-text: #f0f6fc;
  --category-text-hover: #ffffff;
  --category-hover-bg: #2d3748;
  --category-hover-border: #b8975a;
}