/* ============================================
   Responsive Design - Mobile First
   ============================================ */

@media (max-width: 1024px) {
  .dashboard-main {
    grid-template-columns: 1fr;
  }

  .dashboard-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .month-summary {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  #sidebar {
    transform: translateX(-100%);
    width: 280px;
  }

  #sidebar.open {
    transform: translateX(0);
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.4);
  }

  .sidebar-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
    display: none;
  }

  .sidebar-overlay.active {
    display: block;
  }

  #main-content {
    margin-left: 0;
    padding: 16px;
    padding-bottom: calc(var(--bottom-tab-height) + 24px);
  }

  #bottom-tabs {
    display: flex;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  #bottom-tabs::-webkit-scrollbar { display: none; }

  .tab-link {
    min-width: 60px;
    flex-shrink: 0;
  }

  .tab-add { display: none; }

  .fab {
    display: flex;
  }

  .mobile-header {
    display: flex !important;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
    margin-bottom: 16px;
  }

  .mobile-menu-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .mobile-header-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-yellow);
  }

  .dashboard-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .summary-card {
    padding: 14px;
  }

  .summary-card .stat-value {
    font-size: 1.2rem;
  }

  .chart-container {
    height: 220px;
  }

  .calendar-cell {
    min-height: 60px;
    padding: 6px;
  }

  .calendar-cell-date {
    font-size: 0.7rem;
  }

  .calendar-cell-pnl {
    font-size: 0.65rem;
  }

  .calendar-cell-trades {
    display: none;
  }

  .calendar-cell-balance {
    display: none;
  }

  .month-summary {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .month-stat {
    padding: 10px;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .page-header h1 {
    font-size: 1.25rem;
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .stat-value {
    font-size: 1.4rem;
  }

  .stat-value.lg {
    font-size: 1.8rem;
  }

  .modal {
    padding: 20px;
    max-height: 80vh;
    border-radius: 16px;
  }

  .calendar-nav h2 {
    font-size: 1rem;
    min-width: 160px;
  }

  .stats-chart-grid {
    grid-template-columns: 1fr !important;
  }

  .quick-stats {
    gap: 12px;
  }

  .mini-calendar {
    gap: 4px;
  }

  .mini-cal-day {
    padding: 6px 2px;
  }

  .mini-cal-day .day-num {
    font-size: 0.75rem;
  }

  .mini-cal-day .day-pnl {
    font-size: 0.6rem;
  }

  .trade-detail-grid {
    grid-template-columns: 1fr !important;
  }

  .grid[style*="grid-template-columns:1fr 1fr"] {
    grid-template-columns: 1fr !important;
  }

  .grid[style*="grid-template-columns: 1fr 1fr"] {
    grid-template-columns: 1fr !important;
  }

  .grid[style*="grid-template-columns:repeat"] {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  .btn {
    min-height: 44px;
  }

  .btn-sm {
    min-height: 36px;
  }

  .chip {
    padding: 8px 16px;
    font-size: 0.82rem;
  }

  .form-control {
    padding: 12px 14px;
    font-size: 1rem;
    min-height: 44px;
  }

  .heatmap-year {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .heatmap-hour-grid {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .widget-panel {
    width: 85vw;
    right: -85vw;
  }
}

@media (max-width: 480px) {
  #main-content {
    padding: 12px;
    padding-bottom: calc(var(--bottom-tab-height) + 20px);
  }

  .dashboard-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .summary-card {
    padding: 12px;
  }

  .summary-card .stat-value {
    font-size: 1.05rem;
  }

  .summary-card .stat-label {
    font-size: 0.7rem;
  }

  .card {
    padding: 16px;
    border-radius: 14px;
  }

  .calendar-cell {
    min-height: 50px;
    padding: 4px;
    border-radius: 6px;
  }

  .calendar-cell-date {
    font-size: 0.65rem;
  }

  .calendar-cell-pnl {
    font-size: 0.6rem;
  }

  .calendar-day-label {
    font-size: 0.65rem;
    padding: 6px 2px;
  }

  .motivation-banner {
    padding: 12px 14px;
    font-size: 0.8rem;
  }

  .motivation-icon {
    font-size: 1.2rem;
  }

  .btn {
    padding: 10px 16px;
    font-size: 0.82rem;
  }

  .month-summary {
    grid-template-columns: repeat(2, 1fr);
  }

  .heatmap-cell {
    min-width: 10px;
  }
}

/* Desktop Only */
@media (min-width: 769px) {
  .mobile-header {
    display: none !important;
  }

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

  .fab {
    display: none !important;
  }
}