/* CEREBRUM v2. Полноширинная рабочая поверхность на планшетах и ПК.
   Ширина текста внутри длинных статей ограничена ради удобства чтения,
   но сама страница, блоки и карточки занимают всю доступную площадь. */
@media screen and (min-width:761px) {
  .shell { max-width:none; }
  .content,.footer {max-width:none;width:100%;margin:0;}
  .content {padding:30px clamp(18px,2.2vw,48px) 76px;}
  .footer {padding-inline:clamp(18px,2.2vw,48px);}
  .topbar {padding-inline:clamp(18px,2.2vw,48px);}
  .category-grid {grid-template-columns:repeat(4,minmax(0,1fr));}
  .article-grid {grid-template-columns:repeat(3,minmax(0,1fr));}
  .page-header {max-width:100%;}
  .page-header p {max-width:900px;}
  .hero {grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);}
}
@media screen and (min-width:761px) and (max-width:1100px) {
  .content {padding-inline:22px;}
  .footer,.topbar {padding-inline:22px;}
  .category-grid {grid-template-columns:repeat(3,minmax(0,1fr));}
  .article-grid {grid-template-columns:repeat(3,minmax(0,1fr));}
  .hero-copy {padding:clamp(30px,3.4vw,48px);}
}
@media screen and (min-width:1101px) and (max-width:1450px) {
  .category-grid {grid-template-columns:repeat(4,minmax(0,1fr));}
  .article-grid {grid-template-columns:repeat(3,minmax(0,1fr));}
}
@media screen and (min-width:1451px) and (max-width:1899px) {
  .category-grid {grid-template-columns:repeat(5,minmax(0,1fr));}
  .article-grid {grid-template-columns:repeat(4,minmax(0,1fr));}
}
@media screen and (min-width:1900px) {
  .category-grid {grid-template-columns:repeat(6,minmax(0,1fr));}
  .article-grid {grid-template-columns:repeat(5,minmax(0,1fr));}
  .category-tile {min-height:180px;}
}
@media screen and (min-width:2500px) {
  .category-grid {grid-template-columns:repeat(8,minmax(0,1fr));}
  .article-grid {grid-template-columns:repeat(6,minmax(0,1fr));}
  .category-tile {min-height:175px;}
}
/* Внутренние разделы также используют всю ширину без пустых полей справа. */
@media screen and (min-width:1200px){
  .article-layout {grid-template-columns:minmax(0,1fr) minmax(225px,22%);}
  .article-body {max-width:950px;}
  .profile-grid {grid-template-columns:minmax(0,1.5fr) minmax(300px,1fr);}
  .practice-list {grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media screen and (min-width:1850px){
  .article-layout {grid-template-columns:minmax(0,1fr) minmax(270px,23%);gap:32px;}
  .practice-list {grid-template-columns:repeat(3,minmax(0,1fr));}
}
@media screen and (min-width:761px) and (max-width:1100px) {
  .hero-art {display:flex;}
}
@media screen and (max-width:760px){
  .content,.footer {max-width:none;width:100%;margin:0;}
}

/* Новые механики: на всех устройствах крупные нажимаемые элементы */
.memory-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;max-width:380px;margin:22px auto}
.memory-grid button{aspect-ratio:1;border:2px solid var(--line);border-radius:13px;background:var(--surface-alt);min-height:62px;transition:background .14s ease}
.memory-grid button.lit,.memory-grid button.chosen{background:#52b9a1;border-color:#247f71}
.signal-btn{width:min(240px,100%);aspect-ratio:1;display:grid;place-items:center;margin:20px auto;background:var(--surface-alt);border:2px solid var(--line);border-radius:22px}
.signal-shape{width:100px;height:100px;background:#4a8cc4;border-radius:4px}
.signal-shape.round{background:#359b7a;border-radius:50%}
.switch-symbol{font-size:clamp(60px,9vw,104px);line-height:1.3;text-align:center;margin:18px 0}
.pair-sheet{display:grid;grid-template-columns:repeat(auto-fit,minmax(135px,1fr));gap:10px;margin:20px 0}
.pair-sheet>div{display:flex;justify-content:space-between;align-items:center;gap:12px;border:1px solid var(--line);background:var(--surface-alt);border-radius:10px;padding:12px}
.daily-plan{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:18px 0 8px}
.daily-plan a{display:block;padding:20px;background:var(--surface);border:1px solid var(--line);border-radius:14px;min-width:0}
.daily-plan a:hover{border-color:var(--teal)}
.daily-plan strong{display:block;margin:4px 0;font-size:16px}
.daily-plan small{font-size:12px;color:var(--muted)}
.topic-progress{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.topic-progress>div{border:1px solid var(--line);border-radius:12px;padding:14px;background:var(--surface-alt)}
.topic-progress strong{display:block}
.topic-progress small{color:var(--muted)}
.favorite-links{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:10px;margin-top:15px}
.favorite-links a{background:var(--surface-alt);border:1px solid var(--line);padding:13px;border-radius:10px}
@media(max-width:900px){.daily-plan{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.daily-plan,.topic-progress{grid-template-columns:1fr}}
@media screen and (min-width:761px){
  /* Тесты, тренажёры и служебные страницы: карточка целиком во всю ширину. */
  .interactive-card,.static-body {max-width:none;width:100%;}
  .exercise-stage,.quiz-stage {max-width:none;}
  .admin-form {max-width:min(100%,680px);}
}

/* Когнитивные задания версии 3: свободная ширина и удобные цели нажатия. */
.alternate-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:20px 0}
.alternate-grid button,.route-grid button{min-width:0;min-height:54px;border-radius:12px;background:var(--paper,#fff);color:var(--ink,#123b35);border:1px solid var(--line,#c9d8d2);font:inherit;font-weight:750;cursor:pointer}
.alternate-grid button.found{background:#ccebdc;color:#234f3f;opacity:.7}.alternate-grid button:disabled{cursor:default}
.route-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;max-width:440px;margin:20px auto}
.route-grid button.start{background:#e6f3ee}.route-grid button:focus-visible,.alternate-grid button:focus-visible{outline:3px solid #278e85;outline-offset:2px}
.code-pair{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;min-width:60px;padding:14px;border-radius:12px;border:1px solid var(--line,#c9d8d2);background:var(--paper,#fff)}
.code-pair strong{font-size:28px}.code-pair span{font-size:20px}
@media(max-width:410px){.alternate-grid{gap:6px}.alternate-grid button,.route-grid button{min-height:45px;padding:4px}.route-grid{gap:5px}.code-pair{padding:8px;min-width:45px}}

.statement-card{font-size:clamp(17px,2vw,24px);line-height:1.55;padding:22px;border:1px solid var(--line,#c9d8d2);border-radius:14px;background:var(--paper,#fff)}
@media(max-width:480px){.statement-card{padding:12px}}
/* Проверяемые сервером упражнения версии 4 */
.checked-symbol-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:clamp(3px,1.1vw,10px);max-width:600px;margin:20px auto;padding:10px;background:var(--surface-alt);border:1px solid var(--line);border-radius:16px}
.checked-symbol-grid span{display:grid;place-items:center;min-width:0;min-height:clamp(35px,4.8vw,66px);font-size:clamp(20px,3.1vw,31px);font-weight:700;border-radius:8px;background:var(--surface);border:1px solid var(--line)}
.checked-answer-form{display:flex;flex-direction:column;gap:14px;max-width:640px;margin:24px 0}
.checked-answer-form label{font-weight:700}
.checked-answer-form input{max-width:440px}
.checked-answer-form .button{align-self:flex-start}
@media(max-width:400px){.checked-symbol-grid{padding:4px;gap:3px}.checked-symbol-grid span{font-size:19px;min-height:37px}}

/* Выбор учебной темы в личной программе, v5 */
.focus-form{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:12px 0 6px}
.focus-form label{font-weight:700;font-size:14px}
.focus-form select{background:var(--surface-alt);border:1px solid var(--line);border-radius:12px;color:var(--ink);padding:10px 14px;min-width:min(100%,250px);max-width:100%;font:inherit}
.quiz-draft-info{padding:10px 14px;border-radius:12px;border:1px solid var(--line);background:var(--surface-alt);margin-bottom:15px;font-size:13px}
.quiz-draft-info button{margin-left:10px;border:0;background:none;color:var(--accent);text-decoration:underline;cursor:pointer}
@media (max-width:600px){.focus-form{display:grid;grid-template-columns:1fr}.focus-form select{width:100%}}
/* Фильтры страниц практики */
.practice-filter{display:flex;flex-wrap:wrap;align-items:end;gap:14px;margin:16px 0 22px;padding:16px;background:var(--surface-alt);border:1px solid var(--line);border-radius:16px}
.practice-filter label{display:grid;gap:5px;flex:1 1 230px;font-size:13px;font-weight:700}
.practice-filter input,.practice-filter select{min-width:0;width:100%;font:inherit;font-size:15px;padding:10px 13px;border:1px solid var(--line);border-radius:11px;background:var(--surface);color:inherit}
.practice-filter .filter-count{font-size:13px;white-space:nowrap;color:var(--muted);margin:8px 0}
.practice-card[hidden],#practiceNone[hidden]{display:none!important}
@media(max-width:600px){.practice-filter{padding:11px;display:grid;grid-template-columns:1fr}.practice-filter label{flex:auto}}