/* ЦДЗ: карточка, прохождение, результат, разбор, конструктор */
.notebook{background:
  linear-gradient(rgba(255,255,255,.085) 1px,transparent 1px) 0 0/18px 18px,
  linear-gradient(90deg,rgba(255,255,255,.085) 1px,transparent 1px) 0 0/18px 18px,
  linear-gradient(100deg,#B04BDB 0%,#8A45E0 48%,#6755EC 100%)}

/* ---------- карточка ЦДЗ ---------- */
.cdz-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden}
.cdz-head{position:relative;display:flex;align-items:flex-end;justify-content:space-between;gap:20px;min-height:136px;padding:22px 24px;color:#fff}
.cdz-head::after{content:"";position:absolute;top:0;bottom:0;right:92px;width:2px;background:rgba(255,140,150,.55)}
.cdz-head__text{position:relative;z-index:1;min-width:0}
.cdz-head__kind{font-size:13px;font-weight:700;opacity:.85}
.cdz-head__title{font-size:26px;margin-top:4px;max-width:760px}
.cdz-head__sub{margin-top:6px;opacity:.85}
.cdz-head__art{position:relative;z-index:1;width:150px;height:auto;flex:none;margin:-10px 26px -24px 0}
.facts{list-style:none;margin:0;padding:18px 24px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px 24px;border-bottom:1px solid var(--line)}
.fact{display:flex;align-items:center;gap:12px;min-width:0}
.fact__icon{width:36px;height:36px;border-radius:var(--r);background:#F1F3F8;color:var(--text-2);display:grid;place-items:center;flex:none}
.fact__label{display:block;font-size:12px;color:var(--muted)}
.fact__value{display:block;font-weight:700}
.cdz-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:18px 24px}
.cdz-actions__end{margin-left:auto;display:flex;gap:10px;flex-wrap:wrap}
.cdz-note{display:flex;align-items:center;gap:8px;color:var(--text-2);font-size:13px}
.history{padding:0 24px 22px}
.history .table-wrap{border-radius:var(--r)}
.cdz-cols{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:20px;margin-top:20px;align-items:start}
.cdz-desc{font-size:15px;line-height:1.55}

/* ---------- прохождение ---------- */
body.is-player{background:#fff}
.player{min-height:calc(100vh - var(--topbar-h));display:flex;flex-direction:column;padding-bottom:84px}
.answers-nav{background:var(--bg);border-bottom:1px solid var(--line);padding:8px 16px 14px;text-align:center}
.answers-nav__toggle{border:0;background:none;display:inline-flex;align-items:center;gap:4px;font-weight:700;font-size:13px;color:var(--text-2);padding:4px 8px;margin-bottom:6px}
.answers-nav.is-folded .pills{display:none}
.answers-nav.is-folded .answers-nav__toggle .i{transform:rotate(180deg)}
.pills{display:inline-flex;flex-wrap:wrap;justify-content:center;gap:6px;padding:6px;background:#fff;border:1px solid var(--line);border-radius:var(--r-l);max-width:100%}
.pill{width:34px;height:34px;border-radius:var(--r);display:grid;place-items:center;font-weight:700;font-size:13px;border:2px solid var(--line-2);color:var(--text-2);background:#fff}
.pill:hover{border-color:var(--accent)}
.pill--answered{background:var(--accent-soft);border-color:var(--accent-line);color:var(--accent)}
.pill--ok{background:var(--ok-bg);border-color:#4DBB6E;color:var(--ok)}
.pill--bad{background:var(--bad-bg);border-color:#EE7169;color:var(--bad)}
.pill.is-current{box-shadow:0 0 0 2px #fff,0 0 0 4px #8A45E0}
.task-wrap{flex:1;padding:28px 16px 32px}
.task{max-width:720px;margin:0 auto}
.task__num{font-size:13px;font-weight:700;letter-spacing:.04em;text-transform:uppercase}
.task__hint{color:var(--muted);margin-top:4px}
.task__text{font-size:17px;line-height:1.5;margin-top:16px}
.task__media{margin:18px 0 0;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#FAFBFD;display:flex;justify-content:center}
.task__media img{max-height:320px;object-fit:contain}
.verdict{margin-top:22px;font-weight:700;display:flex;align-items:center;gap:8px}
.verdict--ok{color:var(--ok)}
.verdict--bad{color:var(--bad)}
.verdict__pts{font-weight:400}
.opts{margin-top:18px;border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden}
.opt{display:flex;align-items:center;gap:14px;padding:16px 18px;border-top:1px solid var(--line);cursor:pointer;position:relative;background:#fff;transition:background .12s}
.opt:first-child{border-top:0}
.opt:hover{background:#F8F9FD}
.opt input{position:absolute;opacity:0;width:1px;height:1px}
.opt__mark{width:22px;height:22px;border:2px solid #AEB4C3;border-radius:50%;flex:none;display:grid;place-items:center;background:#fff}
.opts--multi .opt__mark{border-radius:5px}
.opt input:checked~.opt__mark{border-color:var(--accent)}
.opt input:checked~.opt__mark::after{content:"";width:10px;height:10px;border-radius:50%;background:var(--accent)}
.opts--multi .opt input:checked~.opt__mark{background:var(--accent)}
.opts--multi .opt input:checked~.opt__mark::after{width:10px;height:6px;border-radius:0;background:none;border:2px solid #fff;border-top:0;border-right:0;transform:translateY(-1px) rotate(-45deg)}
.opt input:focus-visible~.opt__mark{outline:2px solid var(--accent);outline-offset:2px}
.opt.is-checked{background:#F4F6FE}
.opt__text{flex:1;font-size:16px}
.opt__state{flex:none}
.opt.is-ok{background:var(--ok-bg)}
.opt.is-ok .opt__mark,.opts--multi .opt.is-ok input:checked~.opt__mark{border-color:var(--ok)}
.opt.is-ok input:checked~.opt__mark::after{background:var(--ok)}
.opts--multi .opt.is-ok input:checked~.opt__mark{background:var(--ok)}
.opts--multi .opt.is-ok input:checked~.opt__mark::after{background:none}
.opt.is-ok .opt__state{color:var(--ok)}
.opt.is-bad{background:var(--bad-bg)}
.opt.is-bad .opt__mark,.opts--multi .opt.is-bad input:checked~.opt__mark{border-color:var(--bad)}
.opt.is-bad input:checked~.opt__mark::after{background:var(--bad)}
.opts--multi .opt.is-bad input:checked~.opt__mark{background:var(--bad)}
.opts--multi .opt.is-bad input:checked~.opt__mark::after{background:none}
.opt.is-bad .opt__state{color:var(--bad)}
.opt.is-missed{box-shadow:inset 4px 0 0 var(--ok)}
.opt.is-missed .opt__state{color:var(--ok)}
.opts.is-locked .opt{cursor:default}
.opts.is-locked .opt:hover{background:inherit}
.task__foot{margin-top:24px}
.short{margin-top:18px}
.correct{margin-top:12px;color:var(--text-2)}
.correct b{color:var(--ok)}
.correct--sm{font-size:12px;margin-top:6px}
.explain{margin-top:18px;padding:12px 14px;border-radius:var(--r);background:#F6F7FA;color:var(--text-2);line-height:1.5}
.order{list-style:none;margin:18px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}
.order__item{display:flex;align-items:center;gap:12px;padding:10px 10px 10px 14px;border:1px solid var(--line-2);border-radius:var(--r);background:#fff;user-select:none;touch-action:none}
.order__item.is-dragging{opacity:.55;border-style:dashed}
.order__num{width:26px;height:26px;border-radius:50%;background:var(--accent-soft);color:var(--accent);font-weight:700;font-size:13px;display:grid;place-items:center;flex:none}
.order__text{flex:1;font-size:15px}
.order__ctrl{display:flex;gap:4px}
.order__item.is-ok{border-color:var(--ok-line);background:var(--ok-bg)}
.order__item.is-bad{border-color:var(--bad-line);background:var(--bad-bg)}
.match{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.match__row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.25fr);gap:12px;align-items:center;padding:10px 12px;border:1px solid var(--line);border-radius:var(--r);background:#fff}
.match__left{font-weight:700}
.match__row.is-ok{border-color:var(--ok-line);background:var(--ok-bg)}
.match__row.is-bad{border-color:var(--bad-line);background:var(--bad-bg)}

.dock{position:fixed;left:0;right:0;bottom:0;z-index:30;color:#fff}
.dock__in{max-width:980px;margin:0 auto;height:68px;display:flex;align-items:center;gap:10px;padding:0 16px}
.dock__btn{width:44px;height:44px;border-radius:var(--r-l);display:grid;place-items:center;background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.28);padding:0}
.dock__btn:hover{background:rgba(255,255,255,.28)}
.dock__btn.is-disabled{opacity:.4;pointer-events:none}
.dock__count{font-weight:700;font-size:15px;padding:0 6px;white-space:nowrap}
.dock__timer{display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 12px;border-radius:999px;background:rgba(255,255,255,.16);font-variant-numeric:tabular-nums}
.dock__timer.is-low{background:#fff;color:var(--bad)}
.dock__spacer{flex:1}
.dock__finish{height:44px;padding:0 18px;border-radius:var(--r-l);border:0;background:#fff;color:var(--accent);font-weight:700}
.dock__finish:hover{background:#EEF1FD}

/* ---------- результат ---------- */
.result{max-width:980px;margin:0 auto;padding:24px 24px 48px}
.result-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden}
.result-band{position:relative;height:150px}
.result-band::after{content:"";position:absolute;top:0;bottom:0;right:236px;width:2px;background:rgba(255,140,150,.5)}
.result-band__sheet{position:absolute;right:52px;top:22px;width:150px;height:172px;z-index:2;transform:rotate(4deg);filter:drop-shadow(0 12px 18px rgba(18,28,90,.28))}
.score{position:relative;z-index:1;margin:-100px 0 0 28px;width:310px;background:#fff;border-radius:26px;padding:24px 28px 26px;border:7px solid #B25CE0;box-shadow:0 12px 30px rgba(24,32,90,.14)}
.score__value{font-size:64px;font-weight:700;line-height:1;letter-spacing:-.02em}
.score__max{color:#C3C8D4;font-weight:400}
.score__label{font-size:17px;margin-top:8px;color:var(--text-2)}
.score__pct{position:absolute;right:-7px;bottom:-7px;background:#B25CE0;color:#fff;font-weight:700;font-size:16px;padding:10px 16px;border-radius:20px 0 20px 0}
.result-body{padding:24px 28px 28px}
.result-title{font-size:22px}
.result-time{display:flex;align-items:center;gap:8px;color:var(--muted);margin-top:10px;font-size:15px}
.tiles{display:grid;grid-template-columns:repeat(3,minmax(0,200px));gap:12px;margin-top:20px}
.tile{border:1px solid var(--line);border-radius:var(--r);padding:12px 14px 12px 20px;position:relative}
.tile::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:4px;border-radius:0 4px 4px 0;background:var(--tile)}
.tile--ok{--tile:#3DBE5E}.tile--bad{--tile:#EE5A50}.tile--skip{--tile:#B9BFCD}
.tile__label{color:var(--muted);font-size:13px}
.tile__value{font-size:26px;font-weight:700;margin-top:4px}
.result-when{margin-top:22px;color:var(--muted);font-size:13px}
.result-when b{display:block;color:var(--text);font-size:16px;margin-top:4px}
.result-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}

/* ---------- конструктор ---------- */
.builder-bar{position:sticky;top:var(--topbar-h);z-index:20;background:#fff;border-bottom:1px solid var(--line)}
.builder-bar__in{max-width:1240px;margin:0 auto;min-height:60px;display:flex;align-items:center;gap:12px;padding:0 24px}
.builder-bar__title{font-size:16px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:440px}
.save-state{font-size:13px;color:var(--muted);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.save-state::before{content:"";width:8px;height:8px;border-radius:50%;background:#48B870}
.save-state.is-dirty::before{background:#E8A13A}
.save-state.is-saving::before{background:var(--accent)}
.save-state.is-error{color:var(--bad)}
.save-state.is-error::before{background:var(--bad)}
.builder-bar__end{margin-left:auto;display:flex;gap:10px;align-items:center}
.builder{max-width:1240px;margin:0 auto;padding:20px 24px 72px;display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:20px;align-items:start}
.builder__main{min-width:0}
.builder__side{position:sticky;top:136px;display:flex;flex-direction:column;gap:16px}
.bcard{background:#fff;border:1px solid var(--line);border-radius:var(--r-l)}
.bcard__head{display:flex;align-items:center;gap:10px;padding:13px 18px;border-bottom:1px solid var(--line)}
.bcard__head h2{font-size:15px}
.bcard__body{padding:16px 18px;display:flex;flex-direction:column;gap:14px}
.frow{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.title-input{font-size:19px;font-weight:700;height:48px}
.pchips{display:flex;flex-wrap:wrap;gap:6px}
.tasks-head{display:flex;align-items:center;gap:12px;margin:22px 0 10px}
.tasks-head h2{font-size:17px}
.tasks-head__meta{color:var(--muted);font-size:13px}
.tasks-head__end{margin-left:auto;display:flex;gap:6px}
.tasks{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.titem{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);transition:border-color .15s,box-shadow .15s}
.titem.is-open{border-color:var(--accent-line);box-shadow:0 0 0 3px rgba(63,92,229,.08)}
.titem.is-drop-before{box-shadow:0 -3px 0 var(--accent)}
.titem.is-drop-after{box-shadow:0 3px 0 var(--accent)}
.titem.is-dragging{opacity:.5}
.titem__head{display:flex;align-items:center;gap:10px;padding:10px 10px 10px 6px;cursor:pointer;min-height:56px}
.titem__grip{color:#B4BAC8;cursor:grab;display:grid;place-items:center;width:24px;height:32px;border-radius:var(--r-s);flex:none}
.titem__grip:hover{color:var(--text-2);background:#F4F5F9}
.titem__num{width:28px;height:28px;border-radius:var(--r);background:#EEF0F5;font-weight:700;font-size:13px;display:grid;place-items:center;flex:none}
.titem.has-issues .titem__num{background:var(--bad-bg);color:var(--bad)}
.titem__kind{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;color:var(--text-2);background:#F4F5F9;border-radius:999px;padding:4px 10px 4px 8px;white-space:nowrap;flex:none}
.titem__kind .i{color:var(--accent)}
.titem__preview{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.titem__preview.is-empty{color:var(--muted)}
.titem__pts{font-size:12px;color:var(--muted);white-space:nowrap}
.titem__acts{display:flex;gap:2px;flex:none}
.titem__body{padding:2px 18px 18px 48px;display:flex;flex-direction:column;gap:14px;border-top:1px solid var(--line)}
.kinds{display:flex;flex-wrap:wrap;gap:6px;padding-top:14px}
.kind-btn{display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 12px 0 10px;border-radius:999px;border:1px solid var(--line-2);background:#fff;font-size:13px;font-weight:700;color:var(--text-2)}
.kind-btn .i{color:var(--muted)}
.kind-btn:hover{border-color:var(--accent);color:var(--accent)}
.kind-btn.is-active{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}
.kind-btn.is-active .i{color:var(--accent)}
.media-row{display:flex;align-items:flex-start;gap:12px;flex-wrap:wrap}
.media-prev{position:relative;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#FAFBFD}
.media-prev img{max-height:150px;max-width:280px}
.media-prev .icon-btn{position:absolute;right:6px;top:6px}
.file-btn{position:relative;overflow:hidden}
.file-btn input{position:absolute;inset:0;opacity:0;cursor:pointer}
.answers{display:flex;flex-direction:column;gap:8px}
.answers__label{font-size:13px;font-weight:700;color:var(--text-2);display:flex;align-items:center;gap:8px;min-height:28px}
.answers__label .switch{margin-left:auto;font-weight:400}
.arow{display:flex;align-items:center;gap:10px}
.arow .input{flex:1;min-width:0}
.arow__mark{width:36px;height:36px;display:grid;place-items:center;border-radius:var(--r);border:1px solid var(--line-2);background:#fff;color:#C9CEDA;flex:none;padding:0}
.arow__mark:hover{border-color:var(--ok);color:var(--ok)}
.arow__mark.is-on{background:var(--ok);border-color:var(--ok);color:#fff}
.arow__num{width:24px;text-align:center;color:var(--muted);font-weight:700;flex:none}
.arow__sep{color:var(--muted);flex:none}
.add-row{align-self:flex-start;display:inline-flex;align-items:center;gap:6px;border:0;background:none;color:var(--accent);font-weight:700;padding:6px 2px}
.add-row:hover{text-decoration:underline}
.tfoot{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding-top:2px}
.tfoot__label{font-size:13px;font-weight:700;color:var(--text-2)}
.stepper{display:inline-flex;align-items:center;border:1px solid var(--line-2);border-radius:var(--r);overflow:hidden;background:#fff}
.stepper button{width:32px;height:34px;border:0;background:#F7F8FA;display:grid;place-items:center;color:var(--text-2);padding:0}
.stepper button:hover{color:var(--accent);background:var(--accent-soft)}
.stepper input{width:46px;height:34px;border:0;text-align:center;font-weight:700;outline:none;-moz-appearance:textfield}
.stepper input::-webkit-outer-spin-button,.stepper input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.add-task{margin-top:12px;border:1.5px dashed var(--accent-line);border-radius:var(--r-l);background:#fff}
.add-task__btn{width:100%;height:52px;border:0;background:none;color:var(--accent);font-weight:700;display:flex;align-items:center;justify-content:center;gap:8px}
.add-task__kinds{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;padding:0 12px 12px}
.add-kind{display:flex;flex-direction:column;align-items:flex-start;gap:8px;padding:12px;border:1px solid var(--line);border-radius:var(--r);background:#fff;text-align:left;font-weight:700;font-size:13px}
.add-kind .i{color:var(--accent)}
.add-kind:hover{border-color:var(--accent);background:var(--accent-soft)}
.sgroup{display:flex;flex-direction:column;gap:8px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.sgroup:last-child{border-bottom:0;padding-bottom:0}
.srow{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:28px}
.srow__label{font-weight:700;font-size:13px}
.srow__sub{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--text-2)}
.srow__sub .input{height:34px}
.srow__sub .ui-date{width:124px}
.marks{display:grid;grid-template-columns:auto auto 1fr;gap:6px 10px;align-items:center;font-size:13px;color:var(--text-2)}
.marks .mark{width:26px;height:26px}
.issues{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.issues button{border:0;background:none;padding:0;text-align:left;color:var(--text-2);display:flex;gap:8px;font-size:13px;line-height:1.35}
.issues button:hover{color:var(--accent)}
.issues .i{color:var(--bad);margin-top:1px}
.issues b{color:var(--text)}
.ready{display:flex;align-items:center;gap:8px;color:var(--ok);font-weight:700;font-size:13px}
.summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;font-size:12px;color:var(--muted)}
.summary b{color:var(--text);font-size:20px;display:block}

@media (max-width:1024px){
  .builder{grid-template-columns:1fr}
  .builder__side{position:static}
  .cdz-cols{grid-template-columns:1fr}
  .facts{grid-template-columns:repeat(2,minmax(0,1fr))}
  .add-task__kinds{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:600px){
  .cdz-head{padding:18px 16px;min-height:112px}
  .cdz-head::after{right:28px}
  .cdz-head__title{font-size:20px}
  .cdz-head__art{display:none}
  .facts{grid-template-columns:1fr;padding:14px 16px}
  .cdz-actions{padding:14px 16px}
  .cdz-actions .btn--lg{width:100%}
  .cdz-actions__end{margin-left:0}
  .history{padding:0 16px 16px}
  .task-wrap{padding:18px 14px 24px}
  .task__text{font-size:16px}
  .opt{padding:14px}
  .opt__text{font-size:15px}
  .dock__in{height:64px;padding:0 10px;gap:8px}
  .dock__btn{width:42px;height:42px}
  .dock__finish{padding:0 12px}
  .result{padding:12px 12px 32px}
  .result-band{height:132px}
  .result-band::after{right:128px}
  .result-band__sheet{right:14px;top:16px;width:104px;height:120px}
  .score{margin:-72px 14px 0;width:auto;padding:18px 20px 20px}
  .score__value{font-size:52px}
  .result-body{padding:20px 16px}
  .tiles{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
  .tile{padding:10px 10px 10px 16px}
  .tile__value{font-size:22px}
  .builder-bar__in{padding:8px 12px;flex-wrap:wrap}
  .builder{padding:12px 12px 48px}
  .titem__body{padding:2px 12px 14px}
  .titem__kind span{display:none}
  .frow{grid-template-columns:1fr}
  .add-task__kinds{grid-template-columns:repeat(2,minmax(0,1fr))}
  .match__row{grid-template-columns:1fr}
}
.table-scroll{overflow-x:auto}

@media (max-width:600px){
  .builder-bar__end{flex-wrap:wrap;margin-left:0;width:100%}
  .builder-bar__end>*{flex:1 1 auto}
  .builder-bar__end .btn{width:100%}
  .builder-bar__title{max-width:calc(100vw - 140px)}
}