/*
 * Mobile-only overrides for wp-course-plan.
 * Every rule lives inside @media screen and (max-width: 768px).
 * The "screen" media type is critical: without it, narrow print viewports
 * (US Letter portrait at 72 dpi ≈ 612px) match max-width:768px and the
 * mobile layout corrupts the print stylesheet's grid.
 * Desktop layout (≥769px) is owned by course-plan.css and stays untouched.
 */

@media screen and (max-width: 768px) {
  /* sentinel — confirms file is loaded; harmless rule */
  #cp-app { --cp-mobile-loaded: 1; }

  /* ── Task 3a: single-column body and grid ── */
  .cp-body { grid-template-columns: 1fr; }

  .cp-grid {
    display: flex;
    flex-direction: column;
    gap: 0;            /* cell borders take over from gap-bg trick */
    background: transparent;
  }

  .cp-year-header,
  .cp-semester {
    border: 1px solid var(--cp-border);
    border-bottom: none;
  }
  .cp-grid > :last-child { border-bottom: 1px solid var(--cp-border); }

  /* ── Task 3b: reorder cells so each year's four cells are contiguous ── */
  /* Year 1 */
  .cp-year-header[data-year="1"] { order: 1; }
  .cp-semester.cp-fall[data-year="1"]   { order: 2; }
  .cp-semester.cp-spring[data-year="1"] { order: 3; }
  .cp-semester.cp-summer[data-year="1"] { order: 4; }
  /* Year 2 */
  .cp-year-header[data-year="2"] { order: 5; }
  .cp-semester.cp-fall[data-year="2"]   { order: 6; }
  .cp-semester.cp-spring[data-year="2"] { order: 7; }
  .cp-semester.cp-summer[data-year="2"] { order: 8; }
  /* Year 3 */
  .cp-year-header[data-year="3"] { order: 9; }
  .cp-semester.cp-fall[data-year="3"]   { order: 10; }
  .cp-semester.cp-spring[data-year="3"] { order: 11; }
  .cp-semester.cp-summer[data-year="3"] { order: 12; }
  /* Year 4 */
  .cp-year-header[data-year="4"] { order: 13; }
  .cp-semester.cp-fall[data-year="4"]   { order: 14; }
  .cp-semester.cp-spring[data-year="4"] { order: 15; }
  .cp-semester.cp-summer[data-year="4"] { order: 16; }

  /* ── Task 3c: tighten cell padding for narrow widths ── */
  .cp-semester { min-height: 0; padding: 12px 14px; }
  /* Higher specificity than .cp-semester alone, so this overrides desktop's
     .cp-semester.cp-summer { min-height: 60px } — load-bearing, not redundant. */
  .cp-semester.cp-summer { min-height: 0; }
  .cp-year-header { padding: 12px 14px; text-align: left; font-size: 15px; }
  .cp-year-header small { display: inline; margin-left: 8px; margin-top: 0; }
  .cp-tile { font-size: 14px; padding: 12px 14px; }
  .cp-tile-meta { font-size: 12px; }

  /* ── Task 4: sidebar full-width below grid ── */
  .cp-sidebar {
    border-left: none;
    border-top: 1px solid var(--cp-border);
    padding: 16px;
  }
  .cp-sidebar h4 { font-size: 12px; }
  .cp-req-row { padding: 10px 8px; }   /* taller tap targets */
  .cp-req-total { padding: 12px 0; }

  /* ── Task 5: toolbar wrap and dropdown alignment ── */
  .cp-toolbar {
    flex-wrap: wrap;
    gap: 8px 10px;
    padding: 10px 12px;
  }
  .cp-plan-title-wrap {
    order: 10;            /* student switcher drops to its own row */
    flex-basis: 100%;
    justify-content: flex-start;
  }
  .cp-plan-title { padding: 6px 10px; }
  .cp-toolbar-actions {
    order: 5;
    margin-left: auto;
  }
  .cp-toolbar-actions button,
  .cp-toolbar > button { padding: 6px 12px; font-size: 13px; }
  .cp-state-pill { font-size: 13px; }

  .cp-student-menu {
    left: 0;
    transform: none;
    min-width: min(280px, calc(100vw - 24px));
  }
  /* Anchor to the LEFT of the Print button so the menu extends rightward
     into the toolbar's spare space instead of leftward off the viewport.
     The desktop default (right:0) was clipping the menu on narrow screens. */
  .cp-print-menu {
    left: 0;
    right: auto;
    min-width: 0;
    width: max-content;                  /* size to the longest item */
    max-width: calc(100vw - 24px);
  }
  .cp-print-menu button { white-space: nowrap; }

  /* ── Task 6a: full-screen modal cards ── */
  .cp-modal-card {
    max-width: none;
    width: 100%;
    height: 100%;
    max-height: 100%;
    border-radius: 0;
    padding: 16px;
  }
  .cp-modal-card.cp-picker {
    width: 100%;
    height: 100%;
    max-height: 100%;
  }
  .cp-picker-header { padding: 14px 16px; }
  .cp-picker-main { padding: 16px; }
  .cp-picker-nav { max-height: 160px; padding: 10px 6px; }
  .cp-elective-cards { grid-template-columns: 1fr; }

  /* ── Task 6b: vertical custom-course form ── */
  .cp-field-row { flex-direction: column; gap: 10px; }
  .cp-field-narrow { flex: 1 1 auto; }
  .cp-form-actions { flex-direction: column-reverse; gap: 8px; }
  .cp-form-actions .cp-btn { width: 100%; }

  /* ── Task 6c: 16px input font (avoids iOS zoom-on-focus) ── */
  .cp-modal-card input,
  .cp-modal-card select,
  .cp-modal-card textarea,
  .cp-wizard-step input,
  .cp-field input,
  .cp-field select,
  .cp-field textarea { font-size: 16px; }

  /* ── Task 7: wizard polish ── */
  .cp-wizard { padding: 16px; }
  .cp-wizard-steps { flex-wrap: wrap; gap: 6px; font-size: 12px; }
  .cp-wizard-actions { flex-direction: column-reverse; gap: 8px; }
  .cp-wizard-actions button { width: 100%; padding: 10px 16px; font-size: 14px; }
  .cp-state-list { max-height: 280px; }
  .cp-state-list button { padding: 12px; font-size: 14px; }

  /* ── Task 8: Move button + picker ── */
  .cp-tile { position: relative; padding-right: 40px; }
  .cp-tile-move {
    display: block;
    position: absolute;
    top: 50%;
    right: 6px;
    transform: translateY(-50%);
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    width: 36px;
    height: 44px;            /* WCAG 2.5.5 tap target; transparent border absorbs extra space */
    font-size: 18px;
    line-height: 1;
    color: var(--cp-muted);
    cursor: pointer;
  }
  .cp-tile-move:active { background: #f3f4f6; border-color: var(--cp-border); }
  /* Hide the desktop drag-affordance ↕ pseudo-element on touch — without
     SortableJS active it has no meaning and visually competes with the
     ⋮ Move button (users were tapping ↕ expecting drag and getting edit). */
  .cp-tile-year-long::after { content: none; }
  .cp-tile-year-long { padding-right: 40px; }   /* same as regular tiles now */

  .cp-move-picker { max-width: none; }
  .cp-move-grid { grid-template-columns: repeat(3, 1fr); gap: 6px; }
  .cp-move-cell { padding: 14px 6px; font-size: 14px; }
}