/* ENED V1.2.1 — isolated styling for activities, no regression on older quiz CSS */
.exercise-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:28px 0 60px}
.exercise-tile{--tile-color:#6552ee;display:flex;flex-direction:column;gap:13px;min-height:205px;padding:24px;border:1px solid #e7dff8;border-top:5px solid var(--tile-color);border-radius:22px;background:#fff;color:#27213f;text-decoration:none;box-shadow:0 10px 25px rgba(70,48,130,.06);transition:transform .2s,box-shadow .2s}
.exercise-tile:hover{transform:translateY(-4px);box-shadow:0 17px 38px rgba(70,48,130,.13)}.exercise-tile h2{font-size:1.11rem;margin:0}.exercise-tile p{font-size:.85rem;color:#736d8a;margin:0;flex:1}.exercise-tile>strong{font-size:.87rem;color:var(--tile-color)}.exercise-tile-top{display:flex;justify-content:space-between;align-items:center;gap:10px;color:var(--tile-color)}.exercise-tile-top>span:last-child{font-size:1.6rem}.exercise-type-tag{display:inline-flex;border-radius:999px;background:#f0ebff;color:#6246cf;font-size:.72rem;padding:6px 11px;font-weight:800}
.exercise-play-wrap{display:grid;grid-template-columns:minmax(0,1fr) 260px;align-items:start;gap:20px;margin:20px 0 65px}.exercise-play-card,.exercise-side-card,.exercise-feedback,.exercise-result{background:white;border:1px solid #e6ddfb;border-radius:23px;box-shadow:0 14px 32px rgba(75,50,145,.075)}.exercise-play-card{padding:32px}.exercise-card-head{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:25px}.exercise-counter{color:#694de0;font-size:.7rem;font-weight:900;letter-spacing:.07em}.exercise-difficulty{font-size:.76rem;color:#8d6474}.exercise-play-card h2{font-size:clamp(1.15rem,2.6vw,1.6rem);line-height:1.5;margin:0 0 24px;overflow-wrap:anywhere}.exercise-field{display:grid;gap:10px;font-weight:800;margin:15px 0 20px}.exercise-field input,.exercise-pair select{width:100%;border-radius:13px;padding:13px 15px;border:1px solid #cfc4eb;color:#282143;background:#fdfcff;font:inherit;min-height:49px}.exercise-field input:focus,.exercise-pair select:focus{outline:3px solid #b9a5ff;outline-offset:2px}.exercise-pairs{display:grid;gap:14px;margin:22px 0}.exercise-pair{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);align-items:center;gap:15px;padding:14px;background:#faf8ff;border:1px solid #eee7fb;border-radius:14px}.exercise-pair strong{font-size:.9rem;overflow-wrap:anywhere}.exercise-hint{margin:23px 0;border:1px solid #f4dc9c;background:#fffaf0;padding:15px 18px;border-radius:14px}.exercise-hint summary{cursor:pointer;font-weight:850;color:#946819}.exercise-hint p{margin:10px 0 0;color:#674e21}.exercise-submit{margin-top:8px}.exercise-side-card{padding:23px;background:linear-gradient(145deg,#f3edff,#fff1f9)}.exercise-side-card>span{font-size:2.4rem}.exercise-side-card h3{margin:11px 0}.exercise-side-card p{font-size:.9rem;line-height:1.6;color:#665e80}
.exercise-result{text-align:center;padding:43px 24px;margin:35px auto 28px;max-width:850px;background:radial-gradient(circle at top right,#ffeefd,#fff 56%)}.exercise-result-icon{font-size:3rem}.exercise-result h1{margin:14px 0}.exercise-score{font-size:clamp(3.7rem,10vw,5.4rem);font-weight:950;letter-spacing:-.06em;color:#a545ca}.exercise-score small{font-size:.4em}.exercise-result>p{color:#706985}.exercise-result-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:25px}.exercise-feedback{max-width:850px;margin:20px auto 60px;padding:26px}.exercise-feedback h2{margin-top:0}.exercise-feedback-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.exercise-feedback-grid>div{background:#f8f6ff;padding:18px;border-radius:13px;overflow-wrap:anywhere}.exercise-feedback-grid p{font-weight:750}.exercise-explain{background:#eafaf2;padding:21px;border-radius:14px;margin-top:17px;line-height:1.65}.exercise-explain p{margin:10px 0 0}
.exercise-admin-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}.exercise-admin-head h2{margin:0}.exercise-admin-list{display:grid;gap:12px;margin-bottom:50px}.exercise-admin-item{display:flex;justify-content:space-between;gap:18px;align-items:center;border:1px solid #e6ddf8;background:white;padding:19px 23px;border-radius:17px}.exercise-admin-item h3{margin:10px 0 5px;font-size:1rem}.exercise-admin-item p{color:#716b86;font-size:.82rem;margin:0}.exercise-admin-actions{display:flex;gap:7px;flex-wrap:wrap}.exercise-admin-editor{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:18px;align-items:start;margin-bottom:50px}.exercise-admin-editor>.admin-panel{margin-bottom:0}.exercise-fieldset[hidden]{display:none!important}.exercise-fieldset{background:#faf7ff;border:1px solid #e8dff7;border-radius:14px;padding:14px}.exercise-fieldset p{font-size:.8rem}.exercise-help{position:sticky;top:90px;padding:22px}.exercise-help p{color:#706985;font-size:.87rem;line-height:1.65}
@media(max-width:980px){.exercise-list{grid-template-columns:repeat(2,minmax(0,1fr))}.exercise-play-wrap,.exercise-admin-editor{grid-template-columns:1fr}.exercise-side-card{display:none}.exercise-help{position:static}}
@media(max-width:650px){.exercise-list{grid-template-columns:1fr}.exercise-play-card{padding:20px}.exercise-pair{grid-template-columns:1fr}.exercise-feedback-grid{grid-template-columns:1fr}.exercise-admin-item{align-items:start;flex-direction:column}.exercise-admin-editor .admin-panel{padding:18px}}
@media(prefers-reduced-motion:reduce){.exercise-tile{transition:none}}

/* ENED V1.2.2 — guided and progressive pedagogy. Isolated styling. */
.ened-v122-prompt{background:linear-gradient(135deg,#f2edff,#fff7fc);border:1px solid #dfd3ff;border-radius:20px;padding:clamp(18px,3.5vw,30px);margin-bottom:18px;position:relative;overflow:hidden}
.ened-v122-prompt:before{content:"";position:absolute;width:110px;height:110px;border-radius:100%;background:#e5dcff;opacity:.55;right:-48px;top:-48px;pointer-events:none}
.ened-v122-kicker{font-size:.73rem;letter-spacing:.09em;color:#6045cf;font-weight:900;display:block;margin-bottom:12px}
.exercise-play-card .ened-v122-prompt h2{font-size:clamp(1.2rem,2.6vw,1.65rem);margin:0 0 12px;line-height:1.48;color:#272041}
.ened-v122-story{font-size:.93rem;line-height:1.65;color:#6d5681;margin:0 0 16px}
.ened-v122-objective{border-radius:13px;background:#fff;padding:10px 13px;border:1px solid #e5d9ff;margin:15px 0 0;font-size:.88rem;color:#524474}
.ened-scheme{margin:18px 0 0;display:grid;justify-items:center;background:#fff;border-radius:14px;padding:13px;border:1px solid #e4dcf6;color:#5c4ea8}
.ened-scheme svg{width:100%;max-width:310px;height:auto;display:block}
.ened-scheme p{text-align:center;font-size:.78rem;color:#655d7e;margin:4px 0 0}
.ened-v122-guide{border-radius:17px;border:1px solid #c8e7db;background:#f0fbf6;padding:17px 20px;margin:16px 0 25px}
.ened-v122-guide summary{cursor:pointer;color:#187d61;font-weight:850;display:flex;align-items:center;flex-wrap:wrap;gap:12px}
.ened-v122-guide summary span{font-size:.76rem;color:#537e6d;font-weight:500;margin-left:auto}
.ened-v122-guide>p{margin:14px 0 9px;font-size:.85rem}
.ened-v122-check{display:flex;align-items:start;gap:10px;margin:10px 0;cursor:pointer;font-size:.88rem;line-height:1.5;color:#245343}
.ened-v122-check input{width:18px;height:18px;flex:0 0 18px;accent-color:#15936e;margin-top:2px}
.ened-v122-check input:checked+span{text-decoration:line-through;opacity:.67}
.ened-v122-answer-title{font-size:1rem;font-weight:850;color:#372755;margin:0 0 8px}
.ened-v122-result{background:radial-gradient(circle at top right,#fff0fc,white 55%)}
.ened-v122-feedback>h2{margin:5px 0 10px}
.ened-v122-feedback>.muted{line-height:1.6;margin-bottom:22px}
.ened-v122-progress-correction{display:grid;gap:12px}
.ened-v122-reveal{border-radius:17px;border:1px solid #e2d8fa;background:#fcfbff;overflow:hidden}
.ened-v122-reveal[open]{border-color:#b9a7ef;box-shadow:0 8px 22px rgba(105,76,190,.08)}
.ened-v122-reveal summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:12px;padding:17px 20px}
.ened-v122-reveal summary::-webkit-details-marker{display:none}
.ened-v122-reveal summary:focus-visible,.ened-v122-guide summary:focus-visible{outline:3px solid #8865e9;outline-offset:-3px}
.ened-v122-step-num{background:#6c55e7;color:#fff;border-radius:50%;width:32px;height:32px;display:grid;place-items:center;font-weight:850;flex-shrink:0}
.ened-v122-reveal summary strong{display:block;color:#2e244e;font-size:.96rem}
.ened-v122-reveal summary small{display:block;color:#767087;font-size:.78rem;margin-top:3px}
.ened-v122-chevron{margin-left:auto;color:#6c55e7;font-size:1.4rem;font-weight:bold}
.ened-v122-reveal[open] .ened-v122-chevron{transform:rotate(180deg)}
.ened-v122-reveal-content{padding:3px 20px 21px;line-height:1.72;color:#39334d;overflow-wrap:anywhere}
.ened-v122-reveal-content>p{margin:12px 0}
.ened-v122-reveal-content .exercise-feedback-grid{margin-top:9px}
.ened-v122-detail{border-radius:12px;background:#effbf5;padding:15px;margin-top:15px}
.ened-v122-detail p{margin:7px 0 0}
.ened-v122-motivation{background:#fff3dc;border-radius:12px;padding:12px;color:#70501c}
.ened-v122-fields{border:1px solid #ded5f7;border-radius:15px;padding:17px;margin:18px 0;background:#f9f7ff;display:grid;gap:13px;min-width:0}
.ened-v122-fields legend{font-weight:850;color:#5a43bd;padding:0 8px}
.ened-v122-fields label{display:grid;gap:7px;min-width:0}
.ened-v122-fields textarea,.ened-v122-fields input,.ened-v122-fields select{width:100%;max-width:100%;box-sizing:border-box}
@media(max-width:650px){.ened-v122-prompt{padding:17px}.ened-v122-reveal summary{padding:14px}.ened-v122-reveal-content{padding:0 14px 16px}.ened-v122-guide{padding:15px}}
@media(prefers-reduced-motion:reduce){.ened-v122-chevron{transition:none}}