/* Simplified learning shell. Kept separate from the legacy activity styles. */
/* V2 lesson overview: a reading surface, not a dashboard of nested cards.
   Scope to the overview so account, vocabulary and lesson exercises stay intact. */
#view-course .learning-next {display:grid;grid-template-columns:minmax(0,1fr) auto;column-gap:28px;align-items:center;padding:24px;margin-bottom:36px;border:1px solid var(--line);border-left:4px solid var(--coral);border-radius:12px;box-shadow:none;}
#view-course .learning-next .eyebrow {grid-column:1;margin:0 0 8px;}
#view-course .learning-next h2 {grid-column:1;font-size:clamp(1.25rem,2.3vw,1.6rem);line-height:1.35;font-weight:650;margin:0 0 8px;}
#view-course .learning-next > p:not(.eyebrow) {grid-column:1;font-size:.9rem;color:var(--muted);}
#view-course .learning-next > .btn {grid-column:2;grid-row:1 / 4;margin:0;box-shadow:none;max-width:210px;white-space:normal;}
#view-course #courseArea > .card:not(.learning-next) {padding:0;background:transparent;border:0;box-shadow:none;}
#view-course #courseArea > .card:not(.learning-next) > h2 {font-size:1.2rem;font-weight:650;margin-bottom:6px;}
#view-course .learning-path {gap:12px;margin-top:20px;border:0;}
#view-course .learning-path li {padding:0;border:0;}
#view-course .learning-path .btn {
  min-height:64px;padding:18px 20px;border:1px solid color-mix(in srgb,var(--cobalt-deep) 35%,var(--panel));
  border-left:4px solid var(--cobalt);border-radius:12px;
  background:color-mix(in srgb,var(--brand-blue) 10%,var(--panel));color:var(--ink);
  font-weight:600;font-size:1rem;box-shadow:none;transform:none;
}
#view-course .learning-path .btn::after {content:'›';margin-left:auto;padding-left:14px;color:var(--cobalt-deep);font-size:1.5rem;line-height:1;}
#view-course .learning-path .btn:hover,
#view-course .learning-path .btn:focus-visible {background:color-mix(in srgb,var(--brand-blue) 20%,var(--panel));border-color:var(--coral);color:var(--ink);}
#view-course .learning-path small {margin:6px 20px 0;font-size:.8rem;}
@media(max-width:600px){
  #view-course .learning-next {grid-template-columns:minmax(0,1fr);padding:20px;margin-bottom:28px;}
  #view-course .learning-next > .btn {grid-column:1;grid-row:auto;justify-self:start;margin-top:16px;max-width:100%;}
}
nav .desktop-account-nav {display:flex;}
.learning-next {background:var(--panel);border-top:4px solid var(--coral);}
.word-next {border-left:4px solid var(--coral);background:color-mix(in srgb,var(--brand-blue) 6%,var(--panel));margin-bottom:22px;}
.word-next h2 {margin:8px 0;font-size:clamp(1.25rem,2.3vw,1.6rem);}
.word-next .btn {margin-top:16px;}
.word-browse-link {margin:0 0 22px;}
.learning-next h2 {font-size:clamp(1.5rem,3vw,2.1rem);line-height:1.3;margin:12px 0;}
.learning-next .btn {margin-top:12px;}
.lesson-chapters {display:grid;gap:14px;margin-top:22px;}
.lesson-chapter {min-width:0;border:1px solid var(--line);border-radius:14px;background:var(--panel);overflow:hidden;}
.lesson-chapter > summary {display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px;cursor:pointer;border-left:4px solid var(--cobalt);color:var(--ink);}
.lesson-chapter > summary::after {content:'+';font-size:1.4rem;color:var(--cobalt-deep);}
.lesson-chapter[open] > summary {border-left-color:var(--coral);background:color-mix(in srgb,var(--brand-blue) 8%,var(--panel));}
.lesson-chapter[open] > summary::after {content:'−';}
.chapter-range {display:block;font-size:.85rem;color:var(--muted);margin-top:4px;}
.chapter-progress {margin-left:auto;font-size:.8rem;color:var(--muted);}
#view-course .lesson-chapter .learning-path {padding:0 16px 16px;margin-top:14px;}
.learning-status-key {margin-top:20px;color:var(--muted);font-size:.85rem;line-height:1.6;}
.lesson-chapter > summary:focus-visible {outline:3px solid var(--coral);outline-offset:-3px;}
@media(max-width:480px){.lesson-chapter > summary{padding:16px 12px;gap:8px;}.chapter-progress{max-width:100px;}#view-course .lesson-chapter .learning-path{padding:0 10px 12px;}}
.learning-path {list-style:none;padding:0;margin:20px 0 0;display:grid;gap:12px;}
.learning-path li {min-width:0;border-left:3px solid var(--line);padding-left:14px;}
.learning-path .btn {text-align:left;justify-content:flex-start;width:100%;white-space:normal;line-height:1.45;min-height:58px;}
.learning-path small {display:block;margin:6px 0 2px 12px;color:var(--muted,#65718a);}
.word-level summary {cursor:pointer;font-weight:700;font-size:1.15rem;padding:8px 0;}
.word-set-tabs {display:flex;gap:8px;flex-wrap:wrap;margin:20px 0;}
.word-set-tabs .btn {min-height:44px;padding:8px 14px;}
.word-discovery {margin-top:20px;}
.discovery-pairs {margin:24px 0;}
.discovery-pairs > div {display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;padding:18px 0;border-bottom:1px solid var(--border,#ddd);}
.discovery-pairs dt {font-weight:700;color:var(--cobalt-deep);}
.discovery-pairs dd {margin:0;}
.discovery-pairs dt,.discovery-pairs dd {overflow-wrap:anywhere;}
.lesson-completion-actions {display:flex;flex-wrap:wrap;gap:12px;}
#simpleWords:empty::before {content:'…';}
#view-quiz > .card > h2 {display:none;}
[hidden] {display:none!important;}
.practice-word-bank {display:flex;flex-wrap:wrap;gap:10px;margin:16px 0;}
.practice-word-bank .btn {min-height:44px;white-space:normal;overflow-wrap:anywhere;}
.practice-word-bank .btn:disabled {opacity:.4;cursor:default;}
.practice-sentence {padding:16px;background:var(--bg);border:1px solid var(--line);border-radius:12px;overflow-wrap:anywhere;min-height:60px;}
.lesson-practice {min-width:0;overflow-wrap:anywhere;}
.lesson-goal {font-size:1.15rem;font-weight:650;color:var(--cobalt-deep);}
.lesson-display {display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px;}
.lesson-display .btn {min-height:44px;flex:0 1 auto;}
.lesson-display .btn[aria-pressed="true"] {background:var(--cobalt);color:#fff;border-color:var(--cobalt);}
.lesson-essentials .eyebrow {margin-bottom:6px;}
.lesson-vocabulary {display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px;margin:12px 0 24px;}
.lesson-vocabulary > div {display:flex;flex-wrap:wrap;gap:4px 12px;padding:10px 0;border-bottom:1px solid var(--line);min-width:0;overflow-wrap:anywhere;}
.lesson-vocabulary dt {font-weight:650;color:var(--cobalt-deep);}
.lesson-vocabulary dd {margin:0;color:var(--muted);}
.lesson-deeper {border-top:1px solid var(--line);padding-top:12px;}
.lesson-deeper summary {cursor:pointer;font-weight:600;min-height:44px;align-content:center;}
@media(max-width:480px){.lesson-vocabulary {grid-template-columns:1fr;}}
html[data-theme="dark"] .learning-next {background:var(--panel);}
@media(max-width:760px){
  nav .desktop-account-nav {display:flex;margin-top:0;}
  nav .nl {font-size:clamp(10px,2.8vw,13px);}
  .learning-path li {padding-left:9px;}
  .learning-path .btn {font-size:1rem;padding:12px;}
  .lesson-completion-actions {flex-direction:column;align-items:stretch;}
  .lesson-completion-actions .btn {width:100%;white-space:normal;}
  .discovery-pairs > div {gap:12px;font-size:1rem;}
  .learning-next {padding:22px;}
}
.lesson-examples {margin-block:28px;}
.lesson-example {border-bottom:1px solid var(--line);padding-block:6px;}
.lesson-example summary {cursor:pointer;min-height:48px;padding:12px 8px;font-weight:700;line-height:1.5;overflow-wrap:anywhere;}
.lesson-example summary:focus-visible {outline:3px solid var(--cobalt);outline-offset:3px;border-radius:8px;}
.lesson-example-hint {display:block;font-size:.8rem;font-weight:400;color:var(--muted);margin-top:4px;}
.lesson-example[open] .lesson-example-hint {display:none;}
.lesson-example > div {padding:0 12px 12px 24px;border-left:3px solid var(--teal);margin:0 8px 12px;overflow-wrap:anywhere;}
.lesson-example-translation {font-weight:700;}
.vocabulary-filters{display:flex;flex-wrap:wrap;gap:1rem;margin-block:1rem}
.vocabulary-filters label{display:grid;gap:.5rem;flex:1 1 15rem;min-width:0}
.vocabulary-filters input,.vocabulary-filters select{width:100%;min-width:0;box-sizing:border-box;min-height:44px;font:inherit}
.vocabulary-list{margin:0}
.vocabulary-list>div{padding:1rem 0;border-bottom:1px solid var(--border,#dedbd5);overflow-wrap:anywhere}
.vocabulary-list dt{font-weight:700}
.vocabulary-list dd{margin:.35rem 0 0}
.vocabulary-list small{display:block;margin-top:.35rem}
.dictionary-source{display:inline-flex;align-items:center;min-height:44px;font-size:.8rem}
.vocabulary-list summary{cursor:pointer;min-height:44px;display:flex;align-items:center}