/* ═══════════════════════════════════════════════
   mini task ai — Responsive Styles
   ═══════════════════════════════════════════════ */

/* ── Tablet (≤ 1024px) ── */
@media (max-width: 1024px) {
  :root {
    --sidebar-width: var(--sidebar-width-collapsed);
  }

  .sidebar-logo-text,
  .sidebar-section-title,
  .nav-label,
  .nav-badge,
  .nav-arrow,
  .workspace-name,
  .workspace-add,
  .sidebar-ai-actions,
  .sidebar-footer-text { 
    opacity: 0; width: 0; overflow: hidden; 
  }
  .nav-item { justify-content: center; padding: var(--space-2); }
  .sidebar-ai-status { justify-content: center; }
  .sidebar-ai-status span:not(.dot) { display: none; }

  .ai-panel { display: none; }
  .task-detail-panel { width: 100%; max-width: 100%; }

  .dashboard-grid { grid-template-columns: 1fr; }
  .calendar-day-view { grid-template-columns: 1fr; }
  .calendar-day-sidebar { display: none; }
  .settings-layout { grid-template-columns: 1fr; }
  .settings-nav { flex-direction: row; overflow-x: auto; }
  
  .task-list-header,
  .task-row {
    grid-template-columns: 42px 1fr 100px 80px 40px;
  }
  .task-row .task-tags,
  .task-list-header > *:nth-child(5) { display: none; }
}

/* ── Mobile (≤ 640px) ── */
@media (max-width: 640px) {
  .sidebar {
    transform: translateX(-100%);
    width: 280px;
    z-index: 9000;
  }
  .sidebar.mobile-open {
    transform: translateX(0);
  }
  .sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(5, 3, 15, 0.6);
    z-index: 8999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-base) var(--ease-smooth);
  }
  .sidebar-backdrop.visible {
    opacity: 1;
    visibility: visible;
  }

  .app-header {
    left: 0 !important;
    padding: 0 var(--space-3);
  }
  .header-center { display: none; }

  .main-wrapper {
    margin-left: 0 !important;
    margin-bottom: 64px;
  }
  .main-content {
    padding: var(--space-4);
  }

  /* Bottom Navigation */
  .bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: rgba(10, 7, 24, 0.95);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-around;
    z-index: 1000;
    padding: 0 var(--space-2);
  }
  .bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: var(--space-2);
    color: var(--text-muted);
    font-size: 10px;
    cursor: pointer;
    transition: color var(--duration-fast) var(--ease-smooth);
    flex: 1;
  }
  .bottom-nav-item:hover,
  .bottom-nav-item.active {
    color: var(--accent-violet);
  }
  .bottom-nav-item .nav-icon {
    font-size: 20px;
  }

  /* Task list */
  .task-list-header { display: none; }
  .task-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    padding: var(--space-3);
  }
  .task-title-cell { flex: 1; min-width: 70%; }
  .task-due { font-size: var(--text-xs); }
  .task-assignee, .task-progress-mini { display: none; }
  .task-actions { opacity: 1; }

  /* Toolbar */
  .tasks-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .tasks-toolbar-left,
  .tasks-toolbar-right {
    flex-wrap: wrap;
  }
  .task-search { min-width: 100%; }

  /* Kanban */
  .kanban-board {
    flex-direction: column;
  }
  .kanban-column {
    max-width: 100%;
    min-width: 100%;
  }

  /* Calendar */
  .calendar-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .calendar-nav { justify-content: center; }
  .calendar-week-header { grid-template-columns: 40px repeat(7, 1fr); }
  .calendar-week-body { grid-template-columns: 40px repeat(7, 1fr); }
  .calendar-month-day { min-height: 60px; }

  /* KPI Grid */
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }
  .kpi-card { padding: var(--space-3); }
  .kpi-card-value { font-size: var(--text-2xl); }

  /* Dashboard hero */
  .dashboard-hero {
    padding: var(--space-5) var(--space-4);
  }
  .dashboard-greeting { font-size: var(--text-2xl); }

  /* Focus Mode */
  .focus-timer-circle { width: 180px; height: 180px; }
  .focus-task-title { font-size: var(--text-2xl); }

  /* Analytics */
  .analytics-grid { grid-template-columns: 1fr; }

  /* Modal */
  .modal { width: 95%; border-radius: var(--radius-lg); }
  .command-palette { width: 95%; }
  .task-detail-panel { width: 100%; }

  /* Bulk actions */
  .bulk-actions-bar {
    left: var(--space-3);
    right: var(--space-3);
    transform: translateX(0) translateY(100px);
    flex-wrap: wrap;
    border-radius: var(--radius-lg);
    bottom: 72px;
  }
  .bulk-actions-bar.visible {
    transform: translateX(0) translateY(0);
  }
}

/* ── Small Mobile (≤ 380px) ── */
@media (max-width: 380px) {
  .kpi-grid { grid-template-columns: 1fr; }
  .view-tabs { overflow-x: auto; }
  .dashboard-quick-add { flex-direction: column; }
}

/* ── Desktop: hide bottom nav ── */
@media (min-width: 641px) {
  .bottom-nav { display: none; }
  .sidebar-backdrop { display: none; }
  .mobile-menu-btn { display: none; }
}

/* ── High contrast ── */
@media (prefers-contrast: more) {
  :root {
    --border-subtle: rgba(124, 58, 237, 0.3);
    --border-default: rgba(124, 58, 237, 0.5);
    --text-secondary: #C4B8E0;
    --text-muted: #8B7DA8;
  }
}