/* Physics picture lessons: quick checks and "try it first" screens
   (js/subjects/physics/lessons/lesson-app.js). The idea screens use the
   shared .pl-* rules in js/core/practice/practice.css; this file adds the
   question screens and keeps long lessons' page dots on one line. */

.pl-card-q { align-items: start; }
.pl-card-q .pl-words { align-content: start; }
.pl-card-q .pl-q { font-family: var(--font-reading); font-size: 21px; line-height: 1.35; font-weight: 700; }
.pl-card-q .pl-q:focus { outline: none; }
.pl-ask { font-size: 18px; }
.pl-answer { display: grid; gap: var(--space-2); }

.pl-choices { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-2); }
.pl-choices.is-long { grid-template-columns: 1fr; }
.pl-choice { display: flex; align-items: center; gap: var(--space-2); min-height: var(--target-min); text-align: left; border: 2px solid var(--line); border-radius: var(--radius-md); padding: var(--space-1) var(--space-3) var(--space-1) var(--space-2); background: var(--paper); color: var(--ink); font: inherit; font-size: 17px; line-height: 1.3; cursor: pointer; }
@media (hover: hover) { :where(:root:not([data-hover-rest])) .pl-choice:hover:not(:disabled) { border-color: var(--blue); } }
.pl-choice:disabled { cursor: default; }
.pl-choice:focus-visible, .pl-input:focus-visible { outline: 3px solid var(--blue-dark); outline-offset: 2px; }
.pl-letter { flex: 0 0 auto; display: grid; place-items: center; width: 28px; height: 28px; border-radius: var(--radius-round); background: var(--cream); font-weight: 700; font-size: 14px; }
.pl-choice.is-correct { border-color: var(--state-correct-color); background: var(--cream); }
.pl-choice.is-correct .pl-letter { background: var(--state-correct-color); color: var(--paper); }
.pl-choice.is-wrong { border-color: var(--state-incorrect-color); }
.pl-choice.is-wrong .pl-letter { background: var(--state-incorrect-color); color: var(--paper); }
.pl-choice.is-tried { opacity: .55; }
.pl-choice sup, .pl-q sup, .pl-feedback sup { font-size: .7em; }

.pl-typed { display: grid; gap: var(--space-1); }
.pl-typed-label { font-size: 15px; font-weight: 700; color: var(--muted); }
.pl-typed-row { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); }
.pl-input { min-height: var(--target-min); width: min(180px, 100%); border: 2px solid var(--line); border-radius: var(--radius-md); padding: var(--space-1) var(--space-3); font: inherit; font-size: 20px; color: var(--ink); background: var(--paper); }
.pl-input.is-correct { border-color: var(--state-correct-color); }
.pl-input.is-wrong { border-color: var(--state-incorrect-color); }
.pl-unit { font-size: 19px; font-weight: 700; }
.pl-note { margin: 0; font-size: 15px; color: var(--coral-text); }

.pl-side { display: grid; gap: var(--space-3); align-content: start; min-width: 0; }
.pl-feedback { display: grid; gap: var(--space-2); background: var(--cream); border: 1px solid var(--line); border-radius: var(--radius-md); padding: var(--space-3) var(--space-4); }
.pl-feedback p { margin: 0; font-size: 17px; line-height: 1.45; }
.pl-feedback.is-waiting { border-style: dashed; background: var(--paper); color: var(--muted); }
.pl-feedback.is-right { border-left: 5px solid var(--state-correct-color); }
.pl-feedback.is-wrong { border-left: 5px solid var(--state-incorrect-color); }
.pl-feedback.is-shown { border-left: 5px solid var(--blue-dark); }
.pl-verdict { font-weight: 700; font-size: 19px !important; }
.pl-verdict:focus { outline: none; }
.pl-verdict.is-correct { color: var(--green-text); }
.pl-verdict.is-wrong { color: var(--coral-text); }
.pl-actions { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.pl-link { border-color: var(--transparent); background: var(--transparent); color: var(--blue-dark); text-decoration: underline; padding-left: var(--space-2); padding-right: var(--space-2); }
.pl-feedback .pl-btn { justify-self: start; }

.pl-card-q .pl-picture svg.mv { max-height: 300px; }
.pl-card-q.is-answered .pl-picture svg.mv { max-height: 250px; }
.pl-card-q.is-answered .pl-picture .mv-table { font-size: 15px; }

/* Long lessons: dots shrink instead of pushing the buttons apart. */
.pl-dots { flex-wrap: wrap; min-width: 0; }
.pl-dots li.is-check { border-radius: 0; transform: rotate(45deg) scale(.85); background: var(--line); }
.pl-dots li.is-example.is-check { background: var(--alkaline); }
.pl-dots li.is-check.is-on { background: var(--blue-dark); transform: rotate(45deg) scale(1.2); }
#pl-title, .pl-feedback { scroll-margin-top: 90px; scroll-margin-bottom: 100px; }
.pl-dots li.is-done { background: var(--state-correct-color); }

@media (max-height: 760px) and (min-width: 861px) {
  .pl-card-q .pl-q { font-size: 19px; }
  .pl-choice { font-size: 16px; }
  .pl-feedback { padding: var(--space-2) var(--space-3); }
  .pl-feedback p { font-size: 16px; }
  .pl-card-q .pl-picture svg.mv { max-height: 260px; }
  .pl-card-q.is-answered .pl-picture svg.mv { max-height: 220px; }
}

@media (max-width: 860px) {
  /* One column in reading order: question, picture, answers, feedback. */
  .pl-card-q { display: flex; flex-direction: column; align-items: stretch; }
  .pl-card-q .pl-words, .pl-card-q .pl-side { display: contents; }
  .pl-card-q .pl-count { order: 0; }
  .pl-card-q .pl-q { order: 1; }
  .pl-card-q .pl-ask { order: 2; }
  .pl-card-q .pl-picture { order: 3; }
  .pl-card-q .pl-answer { order: 4; }
  .pl-card-q .pl-feedback { order: 5; }
  .pl-card-q.is-answered .pl-picture svg.mv { max-height: 300px; }
  .pl-dots li { width: 8px; height: 8px; }
}

@media (max-width: 520px) {
  .pl-choices { grid-template-columns: 1fr; }
  /* Give the pictures every pixel of a phone's width. */
  .pl-card { padding: var(--space-3) var(--space-2); }
  .pl-picture { padding: var(--space-1); }
}