/* Brand system */
.brand-with-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  width: 28px;
  height: 28px;
  object-fit: contain;
  flex: 0 0 auto;
}

.brand-wordmark {
  display: inline-block;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.sidebar-logo .brand-with-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-logo .brand-mark {
  width: 34px;
  height: 34px;
}

.sidebar-logo .brand-wordmark {
  font-size: 1.28rem;
  color: #fff;
}

.login-logo .brand.brand-with-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.login-logo .brand .brand-mark {
  width: 36px;
  height: 36px;
}

.demo-menu-brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.demo-menu-brand .brand-mark {
  width: 42px;
  height: 42px;
}

.teacher-brand-mark {
  width: 24px;
  height: 24px;
  vertical-align: -5px;
  margin-inline-start: 6px;
}

.mobile-sidebar-toggle,
.sidebar-mobile-close,
.sidebar-overlay {
  display: none;
}

@media (max-width: 980px) {
  body.has-mobile-sidebar {
    overflow-x: hidden;
  }

  .admin-layout {
    grid-template-columns: 1fr !important;
    grid-template-areas: "main" !important;
  }

  .admin-layout .sidebar {
    position: fixed !important;
    inset: 0  auto 0 0;
    right: 0;
    left: auto;
    width: min(84vw, 320px) !important;
    height: 100vh !important;
    max-width: 100%;
    transform: translateX(104%);
    transition: transform .25s ease, box-shadow .25s ease;
    z-index: 1100;
    box-shadow: 0 18px 48px rgba(15, 23, 42, 0.35);
    border: none !important;
  }

  body.sidebar-open-mobile .admin-layout .sidebar {
    transform: translateX(0);
  }

  .sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(2, 6, 23, 0.56);
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s ease;
    z-index: 1090;
    border: 0;
  }

  body.sidebar-open-mobile .sidebar-overlay {
    opacity: 1;
    pointer-events: auto;
    display: block;
  }

  .mobile-sidebar-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    flex: 0 0 auto;
    box-shadow: var(--shadow);
  }

  .mobile-sidebar-toggle svg,
  .sidebar-mobile-close svg {
    width: 22px;
    height: 22px;
  }

  .topbar {
    position: sticky;
    top: 0;
    z-index: 300;
    gap: 12px;
  }

  .topbar .mobile-sidebar-toggle {
    order: 3;
  }

  .sidebar-mobile-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.18);
    background: rgba(255,255,255,0.08);
    color: #fff;
    cursor: pointer;
    margin-inline-start: auto;
    margin-bottom: 14px;
  }

  .sidebar-logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  .main-content,
  .analytics-page .main-content {
    width: 100% !important;
    margin: 0 !important;
  }

  .page-body,
  .analytics-page .page-body {
    padding: 16px !important;
  }

  .login-box {
    margin: 18px;
    padding: 34px 22px;
  }
}

@media (min-width: 981px) {
  .mobile-sidebar-toggle,
  .sidebar-mobile-close,
  .sidebar-overlay {
    display: none !important;
  }
}

/* Mobile-first safety net for the static demo. Keeps desktop styling intact while
   preventing fixed-width panels from creating horizontal overflow on phones. */
html,
body {
  max-width: 100%;
  overflow-x: clip;
}

@supports not (overflow: clip) {
  html,
  body { overflow-x: hidden; }
}

img,
svg,
video,
canvas,
iframe {
  max-width: 100%;
}

@media (max-width: 980px) {
  body.sidebar-open-mobile {
    overflow: hidden;
  }

  .analytics-page .admin-layout,
  .analytics-page .admin-layout .main-content {
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
  }

  .analytics-page .admin-layout .sidebar {
    position: fixed !important;
    inset: 0 0 0 auto !important;
    width: min(84vw, 320px) !important;
    height: 100dvh !important;
    max-width: 100% !important;
    transform: translateX(104%) !important;
    border: 0 !important;
    border-radius: 0 !important;
  }

  body.analytics-page.sidebar-open-mobile .admin-layout .sidebar {
    transform: translateX(0) !important;
  }

  .admin-layout .sidebar,
  .analytics-page .admin-layout .sidebar {
    top: 0 !important;
    bottom: 0 !important;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }

  .topbar,
  .teacher-topbar {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    align-items: center;
    flex-wrap: wrap;
    padding: 12px 16px;
  }

  .topbar > *,
  .teacher-topbar > * {
    min-width: 0;
  }

  .topbar-title,
  .topbar-user,
  .topbar-subtitle {
    overflow-wrap: anywhere;
  }

  .card,
  .stat-card,
  .analytics-card,
  .teacher-exam-module,
  .teacher-paper-form {
    max-width: 100%;
  }

  .stats-grid,
  .analytics-stats-grid,
  .analytics-grid,
  .status-guide-grid,
  .form-grid,
  .teacher-select-bar,
  .teacher-paper-grid,
  .teacher-class-grid {
    grid-template-columns: 1fr !important;
  }

  .form-grid > [style*="grid-column"],
  .teacher-paper-grid > [style*="grid-column"] {
    grid-column: auto !important;
  }

  .filter-bar,
  .analytics-filter-bar,
  .form-actions,
  .teacher-user-actions,
  .teacher-inline-actions,
  .teacher-tabs,
  .teacher-paper-actions,
  .teacher-exam-module-header,
  .teacher-card-head,
  .teacher-table-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .filter-bar > *,
  .analytics-filter-bar > *,
  .form-actions > *,
  .teacher-user-actions > *,
  .teacher-inline-actions > *,
  .teacher-tabs > *,
  .teacher-paper-actions > *,
  .teacher-table-toolbar > *,
  .btn,
  .filter-bar select,
  .filter-bar input,
  .analytics-filter-bar select,
  .analytics-filter-bar input {
    width: 100%;
    min-width: 0;
  }

  .table-wrapper,
  .analytics-table-wrapper,
  .teacher-insights-table-wrap {
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .table-wrapper table,
  .analytics-table-wrapper table,
  .teacher-insights-table-wrap table {
    min-width: 680px;
  }

  .modal-overlay {
    padding: 14px;
  }

  .modal,
  .modal[style] {
    width: min(100%, calc(100vw - 28px)) !important;
    max-width: calc(100vw - 28px) !important;
    height: auto !important;
    max-height: calc(100dvh - 28px) !important;
    padding: 20px !important;
  }

  #toast-container,
  #teacher-notification-container {
    inset-inline: 12px !important;
    left: 12px !important;
    right: 12px !important;
    width: auto !important;
    max-width: none !important;
  }
}

@media (max-width: 640px) {
  .topbar,
  .teacher-topbar {
    padding: 10px 12px;
  }

  .topbar-title {
    font-size: 1.02rem;
  }

  .card,
  .analytics-card,
  .teacher-exam-module,
  .teacher-paper-form {
    padding: 16px;
    border-radius: 14px;
  }

  .stat-card {
    padding: 16px;
  }

  .login-page {
    padding: 16px;
  }

  .login-box {
    width: 100%;
    max-width: 100%;
    margin: 0;
  }
}

/* Layering fix: analytics pages create their own stacking context. On mobile the
   off-canvas sidebar must escape that context so the overlay stays behind it. */
@media (max-width: 980px) {
  .analytics-page .admin-layout {
    z-index: auto !important;
  }

  .sidebar-overlay {
    z-index: 1000 !important;
  }

  .admin-layout .sidebar,
  .analytics-page .admin-layout .sidebar {
    opacity: 1 !important;
    visibility: visible !important;
    z-index: 1200 !important;
    pointer-events: none;
  }

  body.sidebar-open-mobile .admin-layout .sidebar,
  body.analytics-page.sidebar-open-mobile .admin-layout .sidebar {
    pointer-events: auto;
  }

  .admin-layout .sidebar a,
  .admin-layout .sidebar button,
  .sidebar-mobile-close {
    position: relative;
    z-index: 1;
    pointer-events: auto;
  }
}