:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-glass: rgba(17, 24, 39, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.16);
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --accent-light: rgba(99, 102, 241, 0.15);
  --accent-glow: rgba(99, 102, 241, 0.35);
  --success: #10b981;
  --success-light: rgba(16, 185, 129, 0.15);
  --warning: #f59e0b;
  --warning-light: rgba(245, 158, 11, 0.15);
  --danger: #ef4444;
  --danger-light: rgba(239, 68, 68, 0.15);
  --sidebar-w: 260px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.6), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-glass: rgba(255, 255, 255, 0.95);
  --border-color: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(0, 0, 0, 0.16);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-light: rgba(79, 70, 229, 0.1);
  --accent-glow: rgba(79, 70, 229, 0.25);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.1);
}

[data-theme="gruvbox"] {
  --bg-primary: #282828;
  --bg-secondary: #32302f;
  --bg-tertiary: #3c3836;
  --bg-card: rgba(50, 48, 47, 0.85);
  --bg-glass: rgba(50, 48, 47, 0.95);
  --border-color: rgba(235, 219, 178, 0.12);
  --border-hover: rgba(235, 219, 178, 0.24);
  --text-primary: #ebdbb2;
  --text-secondary: #d5c4a1;
  --text-muted: #928374;
  --accent: #fe8019;
  --accent-hover: #d65d0e;
  --accent-light: rgba(254, 128, 25, 0.15);
  --accent-glow: rgba(254, 128, 25, 0.35);
  --success: #b8bb26;
  --warning: #fabd2f;
  --danger: #fb4934;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

/* Layout */
#app-container {
  display: flex;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-w);
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  z-index: 20;
  transition: var(--transition);
}

.sidebar-header {
  padding: 20px 18px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, #6366f1, #a855f7);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 4px 12px var(--accent-glow);
}

.brand-title {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 6px;
}

.brand-badge {
  font-size: 0.65rem;
  background: var(--accent-light);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-transform: uppercase;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 14px 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-section-title {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 700;
  padding: 12px 10px 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
  position: relative;
}

.nav-item:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.nav-item.active {
  background-color: var(--accent-light);
  color: var(--accent);
  font-weight: 600;
}

.nav-item.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 3px;
  background-color: var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.nav-icon {
  font-size: 1.1rem;
  width: 20px;
  text-align: center;
}

.nav-count {
  margin-left: auto;
  font-size: 0.75rem;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  background-color: var(--bg-tertiary);
  color: var(--text-muted);
  font-weight: 600;
}

.nav-item.active .nav-count {
  background-color: var(--accent);
  color: #ffffff;
}

.sidebar-footer {
  padding: 14px;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.user-profile {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  border: 1px solid var(--border-color);
}

.user-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.user-status {
  font-size: 0.7rem;
  color: var(--success);
  display: flex;
  align-items: center;
  gap: 4px;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--success);
  box-shadow: 0 0 8px var(--success);
}

.footer-actions {
  display: flex;
  gap: 6px;
}

/* Main Workspace */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
  overflow: hidden;
  position: relative;
}

/* Top Navigation Bar */
.topbar {
  height: 64px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-glass);
  backdrop-filter: blur(12px);
  z-index: 10;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
  max-width: 520px;
}

.search-wrap {
  position: relative;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.search-input {
  width: 100%;
  padding: 8px 12px 8px 36px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.88rem;
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Samir Todo App Header Link Button */
.btn-app-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-app-link:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent);
  transform: translateY(-1px);
}

.pill-sync-status {
  font-size: 0.68rem;
  background: rgba(16, 185, 129, 0.2);
  color: #10b981;
  padding: 1px 6px;
  border-radius: var(--radius-full);
  font-weight: 700;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
}

/* Quick Add Button */
.btn-quick-add {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 12px var(--accent-glow);
  transition: var(--transition);
}

.btn-quick-add:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px var(--accent-glow);
}

.btn-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  transition: var(--transition);
}

.btn-icon:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

/* View Content Container */
.view-container {
  flex: 1;
  overflow-y: auto;
  padding: 28px 36px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 980px;
  margin: 0 auto;
  width: 100%;
}

.view-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.view-title-wrap h1 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 12px;
}

.view-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.view-controls {
  display: flex;
  gap: 8px;
}

/* Quick Add Task Input in View */
.inline-capture-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.inline-capture-card:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.inline-capture-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.inline-capture-input::placeholder {
  color: var(--text-muted);
}

/* Task List */
.task-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.task-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}

.task-card:hover {
  background-color: var(--bg-secondary);
  border-color: var(--border-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.task-card.completed {
  opacity: 0.6;
}

.task-card.completed .task-title {
  text-decoration: line-through;
  color: var(--text-muted);
}

/* Custom Checkbox */
.task-checkbox {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  border: 2px solid var(--border-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  margin-top: 2px;
  transition: var(--transition);
}

.task-checkbox:hover {
  border-color: var(--accent);
}

.task-card.completed .task-checkbox {
  background-color: var(--success);
  border-color: var(--success);
  color: #ffffff;
}

.task-main {
  flex: 1;
  min-width: 0;
}

.task-title {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  word-break: break-word;
}

.task-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
  flex-wrap: wrap;
}

.pill {
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.pill-priority-urgent {
  background: var(--danger-light);
  color: var(--danger);
  font-weight: 600;
}

.pill-priority-high {
  background: var(--warning-light);
  color: var(--warning);
}

.pill-priority-medium {
  background: var(--accent-light);
  color: var(--accent);
}

.pill-priority-low {
  background: var(--bg-tertiary);
  color: var(--text-muted);
}

.pill-project {
  background: rgba(139, 92, 246, 0.15);
  color: #a855f7;
}

.pill-context {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.pill-date {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.pill-date.overdue {
  background: var(--danger-light);
  color: var(--danger);
  font-weight: 600;
}

.pill-checklist {
  background: var(--bg-tertiary);
  color: var(--text-muted);
  font-size: 0.7rem;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 12px;
  opacity: 0.8;
}

.empty-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.empty-desc {
  font-size: 0.88rem;
  margin-top: 6px;
  max-width: 320px;
  margin-left: auto;
  margin-right: auto;
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 580px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: scale(0.96);
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  background: var(--bg-tertiary);
}

/* Form inputs */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.92rem;
  outline: none;
  transition: var(--transition);
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.form-textarea {
  min-height: 90px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* Buttons */
.btn {
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--border-color);
}

.btn-danger {
  background: var(--danger-light);
  color: var(--danger);
}

.btn-danger:hover {
  background: var(--danger);
  color: #ffffff;
}

/* Checklist in modal */
.checklist-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 4px;
}

.checklist-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.checklist-item-input {
  flex: 1;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border-color);
  padding: 4px 6px;
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
}

.checklist-item-input:focus {
  border-color: var(--accent);
}

.checklist-item-input.done {
  text-decoration: line-through;
  color: var(--text-muted);
}

/* Auth Modal Specifics */
.auth-box {
  max-width: 420px;
  margin: auto;
  text-align: center;
}

.auth-logo {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, #6366f1, #a855f7);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  box-shadow: 0 8px 24px var(--accent-glow);
}

/* Sync info banner */
.sync-banner {
  background: var(--bg-tertiary);
  border: 1px dashed var(--border-hover);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.sync-token-box {
  background: var(--bg-primary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--border-color);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: -280px;
    z-index: 50;
    box-shadow: var(--shadow-lg);
  }
  .sidebar.open {
    left: 0;
  }
  .view-container {
    padding: 16px;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .mobile-menu-btn {
    display: flex !important;
  }
}