/* ════════════════════════════════════════════════════════════════
   MOBILE RESPONSIVE OVERHAUL + AI PANEL
   Target: 375px (iPhone SE) to 768px (iPad portrait)
   Desktop layout preserved above 768px.
   ════════════════════════════════════════════════════════════════ */

/* Hamburger button — hidden on desktop, shown on mobile */
.topbar-hamburger {
  display: none;
  align-items: center; justify-content: center;
  padding: 0 12px; font-size: 22px;
  background: none; border: none; cursor: pointer;
  color: var(--c-text-primary);
}

.sidebar-backdrop {
  display: none; position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.45); z-index: 790;
}
.sidebar-backdrop.visible { display: block; }

@media (max-width: 768px) {

  /* ── Layout: sidebar becomes off-canvas ─────────────────────── */
  #app-shell { display: block; }

  #sidebar {
    position: fixed; left: -280px; top: 0; bottom: 0;
    width: 260px; z-index: 800;
    transition: left 200ms ease;
    box-shadow: none; overflow-y: auto;
  }
  #sidebar.open {
    left: 0;
    box-shadow: 4px 0 24px rgba(0,0,0,0.25);
  }

  .topbar-hamburger { display: flex; }

  /* ── Topbar ──────────────────────────────────────────────────── */
  #topbar { padding: 0 8px; }
  .topbar-search-btn { display: none; }
  .topbar-actions .btn-primary span,
  .topbar-actions .dropdown-host > button > span { display: none; }

  /* ── Main content ────────────────────────────────────────────── */
  #main-wrapper { margin-left: 0 !important; }
  #content { padding: 12px; }

  /* ── KPI grids ───────────────────────────────────────────────── */
  .kpi-grid { grid-template-columns: repeat(2,1fr) !important; gap: 8px; }
  .kpi-card { padding: 12px 14px; }

  /* ── Two-column layouts → single column ──────────────────────── */
  .dashboard-two-col,
  .dashboard-three-col,
  .two-col-layout,
  .ticket-detail-layout,
  .ticket-layout,
  .panel-grid.two-col,
  .panel-grid.three-col {
    grid-template-columns: 1fr !important;
    display: block !important;
  }

  .ticket-side { order: 2; }
  .ticket-thread { order: 1; }

  /* ── Tables: horizontal scroll wrapper ───────────────────────── */
  .data-table {
    display: block; overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    min-width: unset; font-size: 12.5px;
  }
  .data-table td, .data-table th { padding: 8px 10px; }
  .data-table .hide-mobile { display: none; }

  /* ── Forms ───────────────────────────────────────────────────── */
  .form-row { flex-direction: column; gap: 0; }
  .form-group, .form-col { width: 100% !important; }
  .form-input, .form-select, textarea.form-input {
    font-size: 16px;   /* prevent iOS zoom on focus */
  }

  /* ── Filter bars ─────────────────────────────────────────────── */
  .filter-bar { flex-wrap: wrap; gap: 6px; }
  .filter-bar .form-select { flex: 1; min-width: 100px; }
  .filter-bar .btn-primary { width: 100%; }

  /* ── Report category grid ────────────────────────────────────── */
  .report-category-grid { grid-template-columns: 1fr !important; }

  /* ── Search modal: full screen ───────────────────────────────── */
  #search-modal { padding: 0 !important; align-items: flex-start !important; }
  #search-panel {
    width: 100%; max-width: 100%;
    border-radius: 0; max-height: 100vh;
  }
  .search-qa-grid { grid-template-columns: repeat(2,1fr) !important; }

  /* ── AI panel buttons full width ─────────────────────────────── */
  .ai-panel .ai-action-btn { width: 100%; margin-bottom: 6px; }

  /* ── Touch-friendly tap targets ──────────────────────────────── */
  .btn, .btn-sm, .nav-item, .search-qa-btn,
  .ai-action-btn, .topbar-hamburger { min-height: 44px; }
}

/* ════════════════════════════════════════════════════════════════
   AI Assistant panel — applies at all breakpoints
   ════════════════════════════════════════════════════════════════ */
.ai-panel .card-title {
  display: flex; align-items: center; gap: 6px;
}
.ai-panel .card-title i { color: var(--c-purple); }

.ai-action-btn {
  display: flex; align-items: center; gap: 7px;
  width: 100%; padding: 8px 12px; margin-bottom: 6px;
  background: var(--c-bg-hover); border: 1px solid var(--c-border);
  border-radius: var(--r-md); cursor: pointer; font-size: 13px;
  color: var(--c-text-primary); text-align: left;
  font-family: var(--font-base);
  transition: background 120ms, border-color 120ms;
}
.ai-action-btn:hover {
  background: var(--c-purple-light); border-color: var(--c-purple);
  color: var(--c-purple);
}
.ai-action-btn.loading {
  pointer-events: none; opacity: 0.65;
}
.ai-action-btn i { font-size: 15px; flex-shrink: 0; }

.ai-result {
  background: var(--c-purple-light); border: 1px solid var(--c-purple);
  border-radius: var(--r-md); padding: 12px 14px; margin-top: 8px;
  font-size: 13px; line-height: 1.6;
}
.ai-result[hidden]  { display: none; }
#ai-result-content  { white-space: pre-wrap; margin-bottom: 10px; }
.ai-result-actions  { display: flex; gap: 8px; }
.ai-disclaimer {
  font-size: 11px; color: var(--c-text-muted);
  margin-top: 8px; font-style: italic;
}

/* Sentiment colour helpers */
.sentiment-positive { color: var(--c-green); font-weight: 500; }
.sentiment-neutral  { color: var(--c-text-secondary); }
.sentiment-negative { color: var(--c-red); font-weight: 500; }

/* Spinner animation reused by AI buttons */
@keyframes spin { to { transform: rotate(360deg); } }