:root {
  /* Brand Palette (Whites and Royal Blues) */
  --primary: #1d4ed8;
  --primary-hover: #1e40af;
  --primary-light: #eff6ff;
  --primary-glow: rgba(29, 78, 216, 0.25);
  --primary-text: #ffffff;
  --accent: #3b82f6;
  --accent-cyan: #06b6d4;

  /* Neutrals & Surfaces - Light Mode */
  --bg-app: #f8fafc;
  --bg-surface: #ffffff;
  --bg-subtle: #f1f5f9;
  --bg-card: #ffffff;
  --bg-sidebar: #0f172a;
  --border-color: #e2e8f0;
  --border-hover: #cbd5e1;
  --border-focus: #3b82f6;

  /* Typography & Text */
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-subtle: #94a3b8;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Status Accents */
  --success: #16a34a;
  --success-light: #dcfce7;
  --warning: #d97706;
  --warning-light: #fef3c7;
  --danger: #dc2626;
  --danger-light: #fee2e2;
  --info: #0284c7;
  --info-light: #e0f2fe;

  /* Financial Indicators */
  --fin-debit: #2563eb;
  --fin-credit: #16a34a;
  --fin-balanced: #10b981;

  /* Elevation & Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-glow: 0 0 25px rgba(29, 78, 216, 0.35);

  /* Spacing & Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  --header-height: 72px;
  --container-max: 1280px;

  /* Breakpoint References (for media queries) */
  --bp-sm: 640px;
  --bp-md: 768px;
  --bp-lg: 1024px;
  --bp-xl: 1280px;
}

[data-theme="dark"] {
  /* Neutrals & Surfaces - Dark Mode */
  --bg-app: #0b0f19;
  --bg-surface: #111827;
  --bg-subtle: #1f2937;
  --bg-card: #111827;
  --bg-sidebar: #030712;
  --border-color: #1f2937;
  --border-hover: #374151;
  --border-focus: #60a5fa;

  /* Typography & Text */
  --text-main: #f9fafb;
  --text-muted: #9ca3af;
  --text-subtle: #6b7280;

  /* Status Accents (Adjusted contrast for dark mode) */
  --success-light: rgba(22, 163, 74, 0.2);
  --warning-light: rgba(217, 119, 6, 0.2);
  --danger-light: rgba(220, 38, 38, 0.2);
  --info-light: rgba(2, 132, 199, 0.2);
  --primary-light: rgba(59, 130, 246, 0.15);
  --primary-glow: rgba(59, 130, 246, 0.3);

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.35);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 30px rgba(59, 130, 246, 0.4);
}