/* ==========================================================================
   Responsive breakpoints (< 992px tablet, < 768px mobile)
   ========================================================================== */

@media (max-width: 992px) {
  .sidebar {
    transform: translateX(-100%);
    box-shadow: var(--shadow-lg);
  }
  .sidebar.open { transform: translateX(0); }
  .main-wrap { margin-left: 0; }
  .hamburger { display: inline-flex; align-items: center; justify-content: center; }
}

@media (max-width: 768px) {
  .main-content { padding: var(--space-3); padding-bottom: calc(var(--bottom-nav-height) + var(--space-4)); }

  .bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    height: var(--bottom-nav-height);
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
    z-index: 90;
    padding: 4px 0;
  }
  .bottom-nav-link {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    font-size: 10px;
    color: var(--color-text-muted);
    font-weight: 600;
  }
  .bottom-nav-link i { font-size: 18px; }
  .bottom-nav-link.active { color: var(--color-primary); }
  .bottom-nav-fab {
    background: var(--color-primary);
    color: #fff !important;
    width: 50px; height: 50px;
    border-radius: 50%;
    margin-top: -22px;
    box-shadow: var(--shadow-md);
    font-size: 18px;
  }

  /* Tables collapse into card lists */
  .data-table.responsive-table thead { display: none; }
  .data-table.responsive-table, .data-table.responsive-table tbody, .data-table.responsive-table tr, .data-table.responsive-table td {
    display: block;
    width: 100%;
  }
  .data-table.responsive-table tr {
    background: var(--color-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-3);
    padding: var(--space-2) var(--space-3);
  }
  .data-table.responsive-table td {
    border-bottom: 1px solid var(--color-bg);
    padding: 8px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-2);
    text-align: right;
  }
  .data-table.responsive-table td:last-child { border-bottom: none; }
  .data-table.responsive-table td::before {
    content: attr(data-label);
    font-weight: 600;
    color: var(--color-text-muted);
    font-size: 12px;
    text-align: left;
  }
  .data-table.responsive-table .empty-row td::before { content: ''; }
  .data-table.responsive-table .empty-row td { justify-content: center; }

  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .followup-card { flex-direction: column; align-items: stretch; }
  .followup-actions-wrap { align-items: stretch; }
  .followup-actions { justify-content: flex-end; }
  .form-actions { flex-direction: column-reverse; }
  .form-actions .btn { width: 100%; }
  .login-card { padding: var(--space-4); }
}

@media (max-width: 480px) {
  .kpi-grid { grid-template-columns: 1fr; }
  .page-title { font-size: 16px; }
}