:root {
  --bg-primary: #0B0D11;
  --surface: #12151B;
  --surface-elevated: #181C24;
  --surface-hover: #1F2430;
  --border: #232834;
  --border-subtle: #1B1F29;
  
  --accent-primary: #FF6B2B;
  --accent-primary-hover: #FF814A;
  --accent-primary-glow: rgba(255, 107, 43, 0.15);
  --accent-secondary: #F59E0B;
  --accent-success: #10B981;
  --accent-warning: #F59E0B;
  --accent-error: #EF4444;
  --accent-info: #38BDF8;

  --text-primary: #F3F4F6;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Cascadia Code', Consolas, monospace;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --radius-full: 9999px;

  --sidebar-width: 250px;
  --topbar-height: 54px;
  --bottombar-height: 58px;
}

[data-theme="oled"] {
  --bg-primary: #000000;
  --surface: #07080A;
  --surface-elevated: #0E1014;
  --surface-hover: #151820;
  --border: #181C24;
  --border-subtle: #101318;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body, html {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  height: 100%;
  width: 100%;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--surface-hover);
}

/* Typography & Links */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 600;
  letter-spacing: -0.01em;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
}
a:hover {
  color: var(--accent-primary-hover);
}

.mono {
  font-family: var(--font-mono);
}

/* Utility Containers */
.fox-app-container {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

.fox-main-viewport {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow-y: auto;
  background-color: var(--bg-primary);
  position: relative;
}

.fox-content-area {
  flex: 1;
  padding: 24px;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

/* Sidebar Styles */
.fox-sidebar {
  width: var(--sidebar-width);
  background-color: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  height: 100vh;
  user-select: none;
}

.fox-sidebar-header {
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 16px;
  border-bottom: 1px solid var(--border-subtle);
}

.fox-sidebar-header .brand-title {
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.fox-sidebar-header .brand-accent {
  color: var(--accent-primary);
}

.fox-nav-list {
  list-style: none;
  padding: 12px 8px;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.fox-nav-item a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.15s ease-in-out;
}

.fox-nav-item a:hover {
  background-color: var(--surface-hover);
  color: var(--text-primary);
}

.fox-nav-item a.active {
  background-color: var(--surface-elevated);
  color: var(--accent-primary);
  font-weight: 600;
  border-left: 2px solid var(--accent-primary);
}

.fox-nav-badge {
  margin-left: auto;
  background: var(--accent-primary-glow);
  color: var(--accent-primary);
  padding: 2px 6px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-family: var(--font-mono);
}

.fox-sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--surface);
}

/* Shortcut Pills */
.shortcut-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--surface-hover);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  user-select: none;
  transition: border-color 0.15s;
}
.shortcut-pill:hover {
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

/* Card Component */
.tasky-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.tasky-card:hover {
  border-color: #2F3647;
}
.tasky-card.elevated {
  background-color: var(--surface-elevated);
}

/* Buttons */
.tasky-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
  background: none;
}
.tasky-btn-primary {
  background-color: var(--accent-primary);
  color: #FFFFFF;
}
.tasky-btn-primary:hover {
  background-color: var(--accent-primary-hover);
}
.tasky-btn-secondary {
  background-color: var(--surface-elevated);
  border-color: var(--border);
  color: var(--text-primary);
}
.tasky-btn-secondary:hover {
  background-color: var(--surface-hover);
  border-color: #384154;
}
.tasky-btn-ghost {
  color: var(--text-secondary);
}
.tasky-btn-ghost:hover {
  background-color: var(--surface-hover);
  color: var(--text-primary);
}
.tasky-btn-danger {
  background-color: rgba(239, 68, 68, 0.15);
  border-color: var(--accent-error);
  color: var(--accent-error);
}
.tasky-btn-danger:hover {
  background-color: var(--accent-error);
  color: #FFF;
}
.tasky-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Inputs */
.tasky-input {
  width: 100%;
  background-color: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 13px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.tasky-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 1px var(--accent-primary);
}
.tasky-input::placeholder {
  color: var(--text-muted);
}

/* Badges */
.tasky-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 500;
  font-family: var(--font-mono);
  background-color: var(--surface-elevated);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

/* Kanban Board Styling */
.kanban-board-container {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 16px;
  height: calc(100vh - 160px);
}
.kanban-column {
  width: 320px;
  min-width: 320px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  max-height: 100%;
}
.kanban-column-header {
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
}
.kanban-tasks-list {
  flex: 1;
  overflow-y: auto;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.kanban-task-card {
  background-color: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px;
  cursor: grab;
  transition: border-color 0.15s, transform 0.15s;
}
.kanban-task-card:hover {
  border-color: var(--accent-primary);
}
.kanban-task-card.compact {
  padding: 6px 10px;
}

/* Command Palette Overlay */
.cmd-palette-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 15vh;
  z-index: 9999;
}
.cmd-palette-box {
  width: 580px;
  max-width: 90vw;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.8), 0 0 0 1px var(--border);
  overflow: hidden;
  animation: cmdIn 0.15s ease-out;
}
@keyframes cmdIn {
  from { opacity: 0; transform: scale(0.97); }
  to { opacity: 1; transform: scale(1); }
}

/* Mobile & Desktop visibility helpers */
.mobile-only {
  display: none !important;
}
.desktop-only {
  display: inline-flex !important;
}

.calendar-day-cell {
  min-height: 86px;
  padding: 6px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.15s ease;
}

/* Master-Detail Responsive Two-Pane Layouts (Notes, Chat, Learning) */
.two-pane-container {
  display: flex;
  gap: 20px;
  height: calc(100vh - 120px);
  width: 100%;
}
.two-pane-master {
  width: 320px;
  min-width: 320px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex-shrink: 0;
}
.two-pane-detail {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow-y: auto;
}

/* Topbar Styling */
.fox-topbar {
  height: var(--topbar-height);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: var(--surface);
  flex-shrink: 0;
}

/* Mobile Responsive (< 768px) */
@media (max-width: 768px) {
  .mobile-only {
    display: flex !important;
  }
  button.mobile-only, a.mobile-only, span.mobile-only {
    display: inline-flex !important;
  }
  .desktop-only {
    display: none !important;
  }
  .mobile-hidden {
    display: none !important;
  }

  .fox-sidebar {
    display: none !important;
  }

  .fox-topbar {
    padding-top: env(safe-area-inset-top, 0px);
    height: calc(var(--topbar-height) + env(safe-area-inset-top, 0px));
    padding-left: 12px;
    padding-right: 12px;
  }

  .fox-bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(var(--bottombar-height) + env(safe-area-inset-bottom, 0px));
    background-color: var(--surface);
    border-top: 1px solid var(--border);
    justify-content: space-around;
    align-items: center;
    z-index: 1000;
    padding-bottom: env(safe-area-inset-bottom, 4px);
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.4);
  }
  .fox-bottom-nav a, .fox-bottom-nav button {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    font-size: 10px;
    color: var(--text-secondary);
    text-decoration: none;
    background: transparent;
    border: none;
    padding: 6px 8px;
    border-radius: var(--radius-sm);
    transition: color 0.15s, background 0.15s;
    touch-action: manipulation;
  }
  .fox-bottom-nav a.active {
    color: var(--accent-primary) !important;
    font-weight: 700;
  }
  .fox-main-viewport {
    padding-bottom: calc(var(--bottombar-height) + env(safe-area-inset-bottom, 16px) + 12px);
  }
  .fox-content-area {
    padding: 12px;
  }

  .calendar-day-cell {
    min-height: 56px !important;
    padding: 3px !important;
  }

  /* Responsive Kanban Columns */
  .kanban-board-container {
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 20px;
    gap: 12px;
  }
  .kanban-column {
    width: calc(100vw - 36px) !important;
    min-width: calc(100vw - 36px) !important;
    max-width: 380px !important;
    scroll-snap-align: center;
    scroll-snap-stop: always;
  }

  /* Two-Pane Mobile Master-Detail */
  .two-pane-container {
    height: calc(100vh - 140px) !important;
    min-height: calc(100vh - 140px) !important;
    display: flex !important;
    flex-direction: column !important;
    gap: 0 !important;
  }
  .two-pane-master {
    width: 100% !important;
    min-width: 100% !important;
    max-width: 100% !important;
    height: 100% !important;
    flex: 1 1 100% !important;
    border-right: none !important;
  }
  .two-pane-detail {
    width: 100% !important;
    min-width: 100% !important;
    max-width: 100% !important;
    height: 100% !important;
    flex: 1 1 100% !important;
  }
  .two-pane-master.mobile-hidden,
  .two-pane-detail.mobile-hidden {
    display: none !important;
  }

  /* Hero Banner on Mobile */
  .hero-banner-mobile {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 16px !important;
    padding: 16px !important;
  }
  .hero-actions-mobile {
    flex-direction: column !important;
    width: 100% !important;
  }
  .hero-actions-mobile > * {
    width: 100% !important;
    justify-content: center !important;
  }
  /* Prevent auto-zoom on mobile inputs */
  input, textarea, select {
    font-size: 16px !important;
  }

  /* Better touch button feedback */
  button, .tasky-btn, a {
    touch-action: manipulation;
  }
  .tasky-btn:active, button:active {
    transform: scale(0.97);
  }

  /* Mobile scroll containers */
  .scroll-x-touch {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  .scroll-x-touch::-webkit-scrollbar {
    display: none;
  }
}

@media (min-width: 769px) {
  .fox-bottom-nav {
    display: none !important;
  }
}

/* ================= TASKY MODAL SYSTEM ================= */
.tasky-modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 16px;
  z-index: 10000;
  animation: fadeIn 0.15s ease-out;
  overflow-y: auto;
}

.tasky-modal {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8), 0 0 0 1px var(--border);
  padding: 24px;
  width: 100%;
  max-width: 580px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  z-index: 10001;
  animation: cmdIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.tasky-modal-lg {
  max-width: 800px;
}

.tasky-modal-xl {
  max-width: 1000px;
}

@media (max-width: 768px) {
  .tasky-modal-backdrop {
    padding: 0 !important;
    align-items: flex-end !important;
  }
  .tasky-modal {
    padding: 20px 16px calc(20px + env(safe-area-inset-bottom, 16px)) 16px !important;
    width: 100% !important;
    max-width: 100% !important;
    max-height: 88vh !important;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
    border-bottom: none !important;
    border-left: none !important;
    border-right: none !important;
    animation: taskyBottomSheet 0.25s cubic-bezier(0.16, 1, 0.3, 1) !important;
  }
}

@keyframes taskyBottomSheet {
  from {
    transform: translateY(100%);
    opacity: 0.6;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes pulseRed {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.3;
    transform: scale(1.2);
  }
}

@keyframes popIn {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.chat-bubble-container {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

.chat-context-menu {
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* --- Shimmer Skeleton Loader (Teams/WhatsApp Style) --- */
@keyframes taskyShimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.tasky-skeleton {
  background: linear-gradient(90deg, var(--surface-elevated) 25%, var(--surface-hover) 50%, var(--surface-elevated) 75%);
  background-size: 200% 100%;
  animation: taskyShimmer 1.6s ease-in-out infinite;
  border-radius: var(--radius-sm);
  display: inline-block;
}

.tasky-skeleton-card {
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

@keyframes taskySlideUp {
  from {
    transform: translateY(100%);
    opacity: 0.8;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}