/**
 * LMS — Global responsive / mobile optimizations
 * Loaded after app.css. Desktop (1025px+) layout unchanged.
 */

/* ─── Base: prevent horizontal page scroll ───────────────── */
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

.app-layout,
.main-content,
.page-content {
  max-width: 100%;
  min-width: 0;
}

/* ─── Universal horizontal table scroll ──────────────────── */
.table-responsive {
  display: block;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: visible;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
}

.table-responsive > .table,
.table-responsive > table {
  width: 100%;
  min-width: 560px;
}

.card.table-responsive,
.card > .table-responsive {
  border-radius: inherit;
}

.card > .table-responsive:last-child {
  border-bottom-left-radius: inherit;
  border-bottom-right-radius: inherit;
}

/* ─── Tablet (768px – 1024px): minor tweaks only ─────────── */
@media (max-width: 1024px) {
  .page-content {
    padding: 22px 20px;
  }

  .charts-grid {
    grid-template-columns: 1fr;
  }

  .chart-container {
    min-height: 220px;
  }

  .page-title {
    font-size: 1.35rem;
  }
}

/* ─── Mobile & small tablet (≤768px) ─────────────────────── */
@media (max-width: 768px) {
  /* Sidebar / hamburger (inline style on button is display:none) */
  #hamburger-btn {
    display: inline-flex !important;
    flex-shrink: 0;
  }

  .sidebar {
    z-index: 110;
  }

  .sidebar-overlay.visible {
    z-index: 105;
  }

  /* Navbar */
  .navbar {
    padding: 0 12px;
    gap: 8px;
  }

  .navbar-title {
    font-size: 0.9rem;
    min-width: 0;
    overflow: hidden;
  }

  .navbar-title span,
  .navbar-breadcrumb {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 100%;
  }

  .navbar-breadcrumb {
    font-size: 0.8rem;
  }

  .navbar-actions {
    gap: 4px;
    flex-shrink: 0;
  }

  .user-menu-name {
    display: none;
  }

  .user-menu-trigger {
    padding: 4px;
  }

  .user-avatar,
  .user-menu-trigger img,
  .user-menu-trigger .avatar {
    width: 32px !important;
    height: 32px !important;
  }

  .notifications-panel,
  .dropdown-menu {
    width: min(360px, calc(100vw - 24px));
    max-width: calc(100vw - 24px);
  }

  .dropdown-menu {
    right: 0;
    left: auto;
  }

  /* Page layout */
  .page-content {
    padding: 14px 12px;
  }

  .page-header {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    margin-bottom: 18px;
  }

  .page-header > .btn,
  .page-header > a.btn,
  .page-header-actions,
  .page-header > div:last-child:not(.page-header-left) {
    width: 100%;
  }

  .page-header > .btn,
  .page-header > a.btn {
    justify-content: center;
  }

  .page-header-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  .page-header-actions .btn {
    flex: 1 1 auto;
    min-width: 0;
  }

  .page-title {
    font-size: 1.2rem;
    line-height: 1.25;
    word-break: break-word;
  }

  .page-subtitle {
    font-size: 0.8125rem;
  }

  /* Cards & stats */
  .card-header {
    flex-wrap: wrap;
    gap: 10px;
    padding: 14px 16px;
  }

  .card-body {
    padding: 14px 16px;
  }

  .card-footer {
    padding: 12px 16px;
    flex-wrap: wrap;
    gap: 8px;
  }

  .stats-grid {
    gap: 12px;
    margin-bottom: 20px;
  }

  .stat-card {
    padding: 16px;
    min-height: 0;
  }

  .stat-value {
    font-size: 1.35rem;
  }

  /* Tables */
  .table-responsive > .table,
  .table-responsive > table {
    min-width: 520px;
  }

  thead th {
    padding: 10px 12px;
    font-size: 0.7rem;
  }

  td {
    padding: 10px 12px;
    font-size: 0.8125rem;
  }

  .table-actions {
    flex-wrap: wrap;
    gap: 4px;
  }

  .pagination-wrapper {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
    padding: 12px 14px;
  }

  .pagination-controls {
    justify-content: center;
    flex-wrap: wrap;
  }

  /* Forms */
  .form-row,
  .form-grid,
  .grid-2,
  .grid-3,
  .grid-4 {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .form-group {
    margin-bottom: 14px;
  }

  .form-control,
  .form-select,
  textarea.form-control {
    width: 100%;
    max-width: 100%;
  }

  .form-label {
    word-break: break-word;
  }

  /* Buttons */
  .btn-group,
  .btn-toolbar,
  .action-bar,
  .toolbar,
  .filter-bar,
  .filters-row {
    flex-wrap: wrap;
    gap: 8px;
  }

  .btn-group .btn,
  .btn-toolbar .btn {
    flex: 1 1 auto;
    min-width: fit-content;
  }

  /* Modals */
  .modal-overlay {
    padding: 0;
    align-items: flex-end;
  }

  .modal {
    width: 100%;
    max-width: 100%;
    max-height: min(92vh, 100dvh);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    margin: 0;
  }

  .modal-lg,
  .modal-xl {
    max-width: 100%;
  }

  .modal-header {
    padding: 16px 16px 12px;
  }

  .modal-body {
    padding: 16px;
  }

  .modal-footer {
    padding: 12px 16px;
    flex-wrap: wrap;
    justify-content: stretch;
  }

  .modal-footer .btn {
    flex: 1 1 calc(50% - 5px);
    min-width: 0;
  }

  .modal-footer .btn:only-child {
    flex: 1 1 100%;
  }

  /* Tabs */
  .tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    flex-wrap: nowrap;
    margin-bottom: 16px;
    scrollbar-width: none;
  }

  .tabs::-webkit-scrollbar {
    display: none;
  }

  .tab-btn {
    flex-shrink: 0;
    padding: 8px 14px;
    font-size: 0.8125rem;
  }

  /* Toast */
  #toast-container {
    left: 12px;
    right: 12px;
    bottom: 16px;
    max-width: none;
  }

  /* Bulk actions */
  .bulk-action-bar {
    left: 12px;
    right: 12px;
    transform: translateX(0) translateY(80px);
    width: auto;
    max-width: calc(100vw - 24px);
    white-space: normal;
    flex-wrap: wrap;
    justify-content: center;
    border-radius: var(--radius-lg);
    padding: 10px 14px;
  }

  .bulk-action-bar.visible {
    transform: translateX(0) translateY(0);
  }

  /* Section headers (dashboards) */
  .section-header {
    flex-wrap: wrap;
    gap: 10px;
  }

  /* Dashboard inline grids */
  .dash-grid-6,
  .dash-grid-3,
  .dash-grid-2 {
    gap: 12px;
  }

  .dash-grid-6 {
    grid-template-columns: 1fr;
  }

  /* Marksheet screen controls (not print/PDF) */
  body.marksheet-print-body .no-print {
    flex-wrap: wrap;
    padding: 0 12px !important;
    gap: 8px !important;
    justify-content: center !important;
  }

  body.marksheet-print-body .no-print .btn {
    flex: 1 1 auto;
    min-width: 120px;
  }

  body.marksheet-print-body {
    overflow-x: hidden;
    padding: 12px 8px;
  }

  body.marksheet-print-body .marksheet-a4 {
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Chat FAB clearance above safe area */
  #chat-fab {
    bottom: max(16px, env(safe-area-inset-bottom, 0px));
    right: max(16px, env(safe-area-inset-right, 0px));
  }

  #chat-widget {
    right: max(12px, env(safe-area-inset-right, 0px));
  }
}

/* ─── Small phones (≤480px) ─────────────────────────────── */
@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  .page-content {
    padding: 12px 10px;
  }

  .navbar {
    padding: 0 10px;
  }

  .stat-card {
    padding: 14px;
    gap: 12px;
  }

  .stat-icon {
    width: 44px;
    height: 44px;
  }

  .table-responsive > .table,
  .table-responsive > table {
    min-width: 480px;
  }

  .modal-footer .btn {
    flex: 1 1 100%;
  }

  .empty-state {
    padding: 40px 16px;
  }

  .file-drop-zone {
    padding: 24px 16px;
  }
}

/* ─── Very small (≤375px) ───────────────────────────────── */
@media (max-width: 375px) {
  .page-title {
    font-size: 1.1rem;
  }

  .navbar-btn {
    width: 36px;
    height: 36px;
  }

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

/* ─── Auth pages: scrollable forms on mobile ─────────────── */
@media (max-width: 900px) {
  html:has(.auth-page),
  body:has(.auth-page) {
    height: auto;
    min-height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
  }

  .auth-page {
    min-height: 100svh;
    height: auto;
    flex-direction: column;
  }

  .auth-panel-right {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
}

@media (max-width: 480px) {
  .auth-panel-right {
    padding: 20px 16px !important;
  }

  .auth-form-wrap {
    width: 100%;
    max-width: 100%;
  }

  .auth-hero-title {
    font-size: 1.45rem !important;
  }
}

/* ─── Timetable / attendance toolbars (global classes) ─── */
@media (max-width: 768px) {
  .att-toolbar,
  .lms-timetable-table-controls,
  .lms-assign-table-controls,
  .table-controls,
  .apps-filters,
  .pr-toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .table-controls-right,
  .att-mark-summary-chips {
    margin-left: 0;
    width: 100%;
  }

  .lms-program-combo--toolbar.lms-program-combo {
    width: 100% !important;
    max-width: 100% !important;
  }
}

/* ─── Users admin table on narrow screens ────────────────── */
@media (max-width: 768px) {
  .users-admin-table .users-table-course-cell,
  .users-admin-table .users-table-batch-cell {
    max-width: 8rem;
  }
}

/* ─── Result entry / wide data tables ────────────────────── */
@media (max-width: 768px) {
  .res-entry-table {
    min-width: 640px;
  }
}