/* =========================================================================
   LIFEHUB AI — GLOBAL DESIGN SYSTEM STYLESHEET
   Brand: Royal Purple (#5300B7) & Clean Modern Luxury
   Supports: Light Mode (Warm Off-White), Dark Mode (Deep Obsidian Charcoal), and System Mode.
   ========================================================================= */

/* ---- Global Design Tokens (Root Defaults / Light Mode) ----------------- */
:root, [data-theme='light'] {
  /* Color Palette: Light Mode */
  --bg-base: #FCF9F8;
  --bg-surface: #FFFFFF;
  --bg-surface-secondary: #F8F6F7;
  --bg-sidebar: #FFFFFF;
  --bg-elevated: #FFFFFF;
  --bg-highlight: #F0ECF4;
  
  /* Text & Typography */
  --text-primary: #1C1B1B;
  --text-secondary: #5E5C6E;
  --text-tertiary: #8B8999;
  --text-muted: #A3A1AF;
  
  /* Primary Royal Purple Brand */
  --primary: #5300B7;
  --primary-hover: #450099;
  --primary-container: #6D28D9;
  --primary-light: #EBDDFF;
  --primary-ultralight: #F6F0FE;
  --primary-glow: rgba(83, 0, 183, 0.16);

  /* Functional & Semantic */
  --color-success: #10B981;
  --color-success-bg: #ECFDF5;
  --color-danger: #EF4444;
  --color-danger-bg: #FEF2F2;
  --color-info: #06B6D4;
  --color-info-bg: #ECFEFF;
  --color-amber: #F59E0B;
  --color-amber-bg: #FFFBEB;

  /* Borders & Dividers */
  --border-subtle: rgba(0, 0, 0, 0.04);
  --border-base: rgba(0, 0, 0, 0.07);
  --border-strong: rgba(0, 0, 0, 0.12);

  /* Shadows */
  --shadow-subtle: 0 2px 8px rgba(0, 0, 0, 0.02);
  --shadow-card: 0 4px 20px -2px rgba(28, 27, 27, 0.04);
  --shadow-hover: 0 10px 30px -4px rgba(83, 0, 183, 0.08);
  --shadow-pop: 0 20px 40px -10px rgba(83, 0, 183, 0.12);

  /* Scrollbars */
  --scrollbar-thumb: #E2DFE5;
  --scrollbar-thumb-hover: #CBC7D2;
}

/* ---- Dark Mode Token Overrides ---------------------------------------- */
[data-theme='dark'] {
  /* Color Palette: Dark Mode (Deep Obsidian Charcoal) */
  --bg-base: #0E0D12;
  --bg-surface: #16151D;
  --bg-surface-secondary: #1E1D26;
  --bg-sidebar: #121118;
  --bg-elevated: #24222E;
  --bg-highlight: #2A2836;
  
  /* Text & Typography */
  --text-primary: #F4F3F7;
  --text-secondary: #A6A4B2;
  --text-tertiary: #6E6C7C;
  --text-muted: #535160;
  
  /* Primary Royal Purple Brand in Dark Mode */
  --primary: #7C5CFC;
  --primary-hover: #9075FC;
  --primary-container: #5300B7;
  --primary-light: rgba(124, 92, 252, 0.25);
  --primary-ultralight: rgba(124, 92, 252, 0.12);
  --primary-glow: rgba(124, 92, 252, 0.25);

  /* Functional & Semantic (Dark adjustments) */
  --color-success: #34D399;
  --color-success-bg: rgba(52, 211, 153, 0.12);
  --color-danger: #F87171;
  --color-danger-bg: rgba(248, 113, 113, 0.12);
  --color-info: #38BDF8;
  --color-info-bg: rgba(56, 189, 248, 0.12);
  --color-amber: #FBBF24;
  --color-amber-bg: rgba(251, 191, 36, 0.12);

  /* Borders & Dividers in Dark Mode */
  --border-subtle: rgba(255, 255, 255, 0.04);
  --border-base: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.15);

  /* Shadows in Dark Mode */
  --shadow-subtle: 0 2px 10px rgba(0, 0, 0, 0.3);
  --shadow-card: 0 4px 24px -2px rgba(0, 0, 0, 0.45);
  --shadow-hover: 0 10px 30px -4px rgba(124, 92, 252, 0.15);
  --shadow-pop: 0 20px 40px -10px rgba(0, 0, 0, 0.7);

  /* Scrollbars in Dark Mode */
  --scrollbar-thumb: #2C2A38;
  --scrollbar-thumb-hover: #403D50;
}

/* ---- Shared System Constants ------------------------------------------ */
:root {
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 26px;
  --radius-full: 9999px;
  
  --sidebar-width: 250px;
  --header-height: 72px;
  --mobile-nav-height: 68px;
  
  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---- Base Resets & Global Behavior ------------------------------------ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.5;
  transition: background-color var(--transition-smooth), color var(--transition-smooth);
}

/* Custom Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-thumb-hover); }

/* Universal Focus States */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Global Toast Notification System */
.lh-toast-container {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.lh-toast {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-base);
  padding: 10px 18px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  box-shadow: var(--shadow-pop);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  pointer-events: auto;
  animation: toastIn 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(12px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to { opacity: 0; transform: translateY(12px) scale(0.95); }
}

/* Command Palette Modal */
.cmd-palette-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(14, 13, 18, 0.45);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 14vh;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.cmd-palette-backdrop.is-active {
  opacity: 1;
  visibility: visible;
}

.cmd-palette-box {
  width: 100%;
  max-width: 560px;
  background: var(--bg-surface);
  border: 1px solid var(--border-base);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-pop);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.cmd-input-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-base);
}

.cmd-input-row input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 15px;
  outline: none;
}

.cmd-results-list {
  max-height: 320px;
  overflow-y: auto;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.cmd-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.cmd-item:hover, .cmd-item.selected {
  background: var(--bg-surface-secondary);
  color: var(--primary);
}