/* OrbitDesk Design System Variables */
:root {
  /* Brand & Neutrals - Light Mode */
  --bg-app: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #ffffff;
  --bg-subtle: #f1f5f9;
  --bg-hover: #e2e8f0;
  --bg-active: #cbd5e1;
  --bg-overlay: rgba(15, 23, 42, 0.5);

  --border: #e2e8f0;
  --border-subtle: #f1f5f9;
  --border-focus: #6366f1;
  --border-strong: #cbd5e1;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-subtle: #94a3b8;
  --text-inverse: #ffffff;

  /* Primary Accent - Indigo */
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --primary-border: #c7d2fe;
  --primary-text: #4338ca;

  /* Semantic Colors */
  --success: #10b981;
  --success-light: #ecfdf5;
  --success-border: #a7f3d0;
  --success-text: #065f46;

  --warning: #f59e0b;
  --warning-light: #fffbeb;
  --warning-border: #fde68a;
  --warning-text: #92400e;

  --danger: #ef4444;
  --danger-light: #fef2f2;
  --danger-border: #fecaca;
  --danger-text: #991b1b;

  --info: #0ea5e9;
  --info-light: #f0f9ff;
  --info-border: #bae6fd;
  --info-text: #075985;

  --purple: #8b5cf6;
  --purple-light: #f5f3ff;
  --purple-border: #ddd6fe;
  --purple-text: #5b21b6;

  /* Status Colors */
  --status-backlog: #64748b;
  --status-todo: #0284c7;
  --status-inprogress: #d97706;
  --status-inreview: #7c3aed;
  --status-done: #059669;
  --status-archived: #94a3b8;

  /* Priority Colors */
  --priority-low: #64748b;
  --priority-medium: #0284c7;
  --priority-high: #ea580c;
  --priority-urgent: #dc2626;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Spacing Grid (Compact SaaS) */
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */

  /* Radius */
  --radius-xs: 3px;
  --radius-sm: 5px;
  --radius-md: 7px;
  --radius-lg: 10px;
  --radius-xl: 14px;
  --radius-full: 9999px;

  /* Shadows (Restrained Enterprise) */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.08), 0 1px 2px -1px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-dropdown: 0 10px 25px -5px rgba(15, 23, 42, 0.12), 0 8px 10px -6px rgba(15, 23, 42, 0.06);

  /* Layout */
  --sidebar-width: 240px;
  --sidebar-collapsed-width: 68px;
  --topbar-height: 56px;
  --max-content-width: 1360px;

  /* Transitions */
  --transition-fast: 120ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;
}

/* Dark Mode Theme */
[data-theme="dark"] {
  --bg-app: #090d16;
  --bg-surface: #0f172a;
  --bg-surface-elevated: #1e293b;
  --bg-subtle: #1e293b;
  --bg-hover: #26334d;
  --bg-active: #334155;
  --bg-overlay: rgba(0, 0, 0, 0.75);

  --border: #1e293b;
  --border-subtle: #182234;
  --border-focus: #818cf8;
  --border-strong: #334155;

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-subtle: #64748b;
  --text-inverse: #0f172a;

  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: rgba(99, 102, 241, 0.12);
  --primary-border: rgba(99, 102, 241, 0.3);
  --primary-text: #a5b4fc;

  --success: #10b981;
  --success-light: rgba(16, 185, 129, 0.12);
  --success-border: rgba(16, 185, 129, 0.3);
  --success-text: #6ee7b7;

  --warning: #f59e0b;
  --warning-light: rgba(245, 158, 11, 0.12);
  --warning-border: rgba(245, 158, 11, 0.3);
  --warning-text: #fcd34d;

  --danger: #ef4444;
  --danger-light: rgba(239, 68, 68, 0.12);
  --danger-border: rgba(239, 68, 68, 0.3);
  --danger-text: #fca5a5;

  --info: #0ea5e9;
  --info-light: rgba(14, 165, 233, 0.12);
  --info-border: rgba(14, 165, 233, 0.3);
  --info-text: #7dd3fc;

  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-dropdown: 0 10px 25px -5px rgba(0, 0, 0, 0.6), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
}