/*
 * Shared safeguards for the standalone teaching rooms.
 * Individual lessons keep their own visual language; these rules make the
 * material readable and operable on small screens, touch devices, and print.
 */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  overflow-x: clip;
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  min-width: 320px;
  overflow-x: clip;
}

:where(main, section, article, aside, header, footer, nav, div) {
  min-width: 0;
}

:where(h1, h2, h3, h4) {
  overflow-wrap: anywhere;
  text-wrap: balance;
}

:where(p, li, figcaption, dd) {
  overflow-wrap: anywhere;
  text-wrap: pretty;
}

:where(img, video, canvas) {
  max-width: 100%;
  height: auto;
}

:where(input, select, textarea, button) {
  max-width: 100%;
  font: inherit;
}

:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
  outline: 3px solid #2563eb;
  outline-offset: 3px;
}

:where(button, [role="button"], a) {
  touch-action: manipulation;
}

table {
  max-width: 100%;
}

@media (max-width: 640px) {
  :where(input, select, textarea) {
    font-size: 16px;
  }

  table {
    display: block;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    -webkit-overflow-scrolling: touch;
  }

  /*
   * A few legacy lesson rooms use inline React styles for desktop grids and
   * generous horizontal section padding. These targeted overrides keep the
   * content in one readable column without changing the desktop composition.
   */
  [style*="grid-template-columns"],
  [style*="gridTemplateColumns"] {
    grid-template-columns: minmax(0, 1fr) !important;
  }

  section[style] {
    padding-right: clamp(1rem, 5vw, 1.5rem) !important;
    padding-left: clamp(1rem, 5vw, 1.5rem) !important;
  }

  [style*="width: 900px"],
  [style*="width:900px"],
  [style*="width: 800px"],
  [style*="width:800px"] {
    width: 100% !important;
  }
}

@media (hover: none), (pointer: coarse) {
  :where(a, button, [role="button"]) {
    min-height: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto !important;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  body {
    background: #fff !important;
    color: #000 !important;
  }

  nav,
  .navbar-spacer,
  [aria-label*="navigation" i] {
    display: none !important;
  }

  a {
    color: inherit;
    text-decoration: underline;
  }

  section,
  article,
  figure,
  table {
    break-inside: avoid;
  }
}