/* Class units (TeachingUnit): the teacher's list, new-unit form, review page, part editor and results
   (teach/units/*), and the student's page of a unit (classes/unit). */
.units__allowance { margin: 0; font-size: 14px; color: var(--text-muted); }
.units__allowance a { font-weight: 600; }
.units__plan { display: flex; flex-direction: column; gap: 10px; }
.units__plan-title { margin: 0; font-family: var(--font-serif); font-weight: 400; font-size: 26px; }
.units__plan p { margin: 0; }
.units__plan-note { font-size: 13px; opacity: .8; }
.units__empty { display: flex; flex-direction: column; gap: 10px; }
.units__empty p { margin: 0; }
.units__steps { margin: 0; padding-inline-start: 20px; display: flex; flex-direction: column; gap: 6px; line-height: 1.5; }

.units__list { margin: 0; padding: 0; list-style: none; }
.units__card { display: flex; flex-direction: column; gap: 6px; height: 100%; color: var(--ink); text-decoration: none; }
.units__card:hover { border-color: var(--ink); text-decoration: none; color: var(--ink); }
.units__card-head { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.units__level { background: var(--ink); color: var(--paper); border-radius: 6px; padding: 2px 8px; font-size: 12px; font-weight: 700; }
.units__status { border-radius: 999px; padding: 2px 10px; font-size: 12px; font-weight: 700; background: var(--sand); }
.units__status--draft { background: var(--clay-soft); color: var(--clay); }
.units__status--approved { background: var(--green-soft); color: var(--green); }
.units__card-title { font-family: var(--font-serif); font-size: 22px; line-height: 1.2; }
.units__card-goal { font-size: 14px; color: var(--text-muted); line-height: 1.45; }
.units__card-meta { margin-top: auto; font-size: 13px; color: var(--text-muted); }

.units__form { gap: 16px; }
.units__more summary { cursor: pointer; font-weight: 600; margin-bottom: 10px; }
.units__more[open] { display: flex; flex-direction: column; gap: 14px; }
.units__fine { margin: 0; font-size: 13px; color: var(--text-muted); line-height: 1.5; }
.units__drafting { display: flex; align-items: center; gap: 10px; margin: 0; padding: 10px 14px; border-radius: 12px; background: var(--sand); font-size: 14px; }
.units__spinner { border-color: var(--line); border-top-color: var(--clay); margin-top: 0; }

/* Review */
.units--review { gap: 16px; }
.units__part { display: flex; flex-direction: column; gap: 12px; scroll-margin-top: 80px; }
.units__part--removed, .units__part--failed { opacity: .8; }
.units__part-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.units__part-title { margin: 0; display: flex; align-items: center; gap: 10px; font-size: 18px; }
.units__part-number { width: 28px; height: 28px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
                      background: var(--ink); color: var(--paper); font-size: 14px; }
.units__state { font-size: 12px; font-weight: 700; border-radius: 999px; padding: 3px 10px; background: var(--sand); }
.units__state--ready { background: var(--green-soft); color: var(--green); }
.units__state--failed { background: var(--clay-soft); color: var(--clay); }
.units__actions { flex-wrap: wrap; align-items: center; }
.units__body { display: flex; flex-direction: column; gap: 10px; font-size: 15px; line-height: 1.55; }
.units__body p { margin: 0; }
.units__subtitle { margin: 0; font-family: var(--font-serif); font-weight: 400; font-size: 22px; }
.units__source, .units__ask { font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--text-muted); font-weight: 700; }
:lang(ar) .units__source, :lang(ar) .units__ask { letter-spacing: 0; }
.units__table { border-collapse: collapse; font-size: 14px; }
.units__table th, .units__table td { padding: 6px 12px; text-align: start; border-bottom: 1px solid var(--line); }
.units__table th { font-size: 12px; color: var(--text-muted); }
.units__examples, .units__questions { margin: 0; padding-inline-start: 22px; display: flex; flex-direction: column; gap: 12px; }
.units__examples li { display: flex; flex-direction: column; gap: 2px; }
.units__example { font-size: 24px; line-height: 1.6; }
.units__reading { font-size: 14px; color: var(--text-muted); }
.units__meaning { display: block; font-family: var(--font-serif); font-size: 17px; }
.units__note { font-size: 14px; color: var(--text-muted); }
.units__tips { margin: 0; padding-inline-start: 20px; display: flex; flex-direction: column; gap: 4px; }
.units__text { font-size: 19px; line-height: 1.8; max-height: 320px; overflow: auto; padding: 12px 14px; border-radius: 12px; background: var(--sand); }
.units__text p { margin: 0 0 10px; }
.units__chips { margin: 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 6px; }
.units__chips li { padding: 4px 12px; border-radius: 999px; background: var(--sand); font-size: 17px; }
.units__quote { margin: 0; padding: 10px 14px; border-inline-start: 3px solid var(--clay); background: var(--clay-soft); border-radius: 0 12px 12px 0;
                font-size: 19px; line-height: 1.6; }
.units__questions li { display: flex; flex-direction: column; gap: 4px; }
.units__options { margin: 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 6px; }
.units__options li { padding: 3px 10px; border-radius: 8px; border: 1px solid var(--line); font-size: 15px; }
.units__options li.is-right { border-color: var(--green); background: var(--green-soft); color: var(--green); font-weight: 600; }

.units__assign { gap: 12px; scroll-margin-top: 80px; }
.units__assigned { margin: 0; display: flex; gap: 10px; flex-wrap: wrap; font-size: 14px; }
.units__assign-form { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 16px; align-items: end; }
.units__assign-detail, .units__assign-form .units__fine, .units__assign-form [type="submit"] { grid-column: 1 / -1; }
.units__assign-form [type="submit"] { justify-self: start; }
.units__question { display: flex; flex-direction: column; gap: 10px; margin: 0; padding: 14px; border: 1px solid var(--line); border-radius: 14px; }
.units__question legend { font-weight: 700; padding: 0 6px; }
.units__sentence { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
.units__remove-question { font-size: 14px; color: var(--text-muted); }

/* Results */
.units__results { display: flex; flex-direction: column; gap: 12px; }
.units__table-wrap { overflow-x: auto; }
.units__table--results { width: 100%; }
.units__table--results th[scope="row"] { font-size: 14px; color: var(--ink); font-weight: 600; white-space: nowrap; }
.units__cell { text-align: center; font-weight: 700; }
.units__cell.is-done { color: var(--green); }
.units__cell.is-started { color: var(--clay); }
.units__cell.is-none { color: var(--text-muted); }
.units__answer { font-size: 14px; color: var(--text-muted); }
.units__miss { align-items: center; gap: 10px; font-size: 13px; color: var(--text-muted); }
.units__miss .progress { flex: 1; max-width: 240px; }
.progress__bar--clay { background: var(--clay); }

/* The student's unit */
.units__path { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 10px; }
.units__step { display: flex; align-items: center; gap: 14px; padding: 14px 18px; }
.units__step-number { width: 34px; height: 34px; flex-shrink: 0; border-radius: 50%; display: flex; align-items: center; justify-content: center;
                      border: 1.5px solid var(--ink); font-weight: 700; }
.units__step.is-done .units__step-number { background: var(--green-soft); border-color: var(--green); color: var(--green); }
.units__step-copy { flex: 1; display: flex; flex-direction: column; gap: 2px; }
.units__step-title { font-weight: 700; font-size: 16px; }
.units__step-hint { font-size: 14px; color: var(--text-muted); }

@media (max-width: 640px) {
  .units__assign-form, .units__sentence { grid-template-columns: 1fr; }
  .units__step { flex-wrap: wrap; }
}