/* QUIZ-UX-1: compact shared difficulty and quiz-quality controls. */
.nr-rating{--nr-ink:#173e39;--nr-muted:#637872;--nr-line:#d8e6df;--nr-bg:#f7faf8;direction:rtl;text-align:right;background:var(--nr-bg);color:var(--nr-ink);border:1px solid var(--nr-line);border-radius:12px;padding:12px;margin:14px 0;box-shadow:none;font-family:Alexandria,Arial,sans-serif;line-height:1.6;min-width:0}
.nr-rating *{box-sizing:border-box}
.nr-rating.nr-rating h3{font-size:13px;margin:0;color:var(--nr-ink);line-height:1.6}
.nr-heading{display:flex;align-items:center;gap:8px;margin-bottom:9px}
.nr-heading .nr-emblem{display:grid;place-items:center;width:26px;height:26px;border-radius:8px;background:#e8f2eb;font-size:15px;color:#256e56;flex:none}
.nr-rating.nr-rating .nr-heading p{margin:0;color:var(--nr-muted);font-size:10px}
.nr-rating fieldset{padding:0;margin:0;border:0;min-width:0}
.nr-rating legend{font-size:10px;color:var(--nr-muted);margin-bottom:7px}
.nr-options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}
.nr-rating .nr-choice,.nr-radio>span,.nr-quality-options>button{font:inherit;background:#fff;color:var(--nr-ink);border:1px solid var(--nr-line);border-radius:9px;min-height:44px;padding:7px 8px;display:flex;align-items:center;justify-content:center;gap:7px;cursor:pointer;box-shadow:none;line-height:1.5;font-size:12px;transition:background .15s,border-color .15s}
.nr-radio{position:relative;display:block;margin:0!important;min-width:0}
.nr-radio>input{position:absolute;width:1px!important;height:1px!important;opacity:0;margin:0!important}
.nr-rating .nr-choice:hover:enabled,.nr-radio:hover>span,.nr-quality-options>button:hover:enabled{border-color:#4f8b70;background:#edf6f0}
.nr-rating .nr-choice.is-selected,.nr-radio>input:checked+span,.nr-quality-options>button.is-selected{border-color:#277255;background:#e4f2e9;color:#165637;box-shadow:inset 0 0 0 1px #277255}
.nr-radio>input:checked+span:after{content:'✓';font-weight:700}
.nr-rating .nr-choice:disabled,.nr-quality-options>button:disabled{cursor:default;opacity:.65}
.nr-rating .nr-choice.is-selected:disabled,.nr-radio>input:checked+span{opacity:1}
.nr-radio>input:focus-visible+span,.nr-rating button:focus-visible{outline:3px solid #e2b04a;outline-offset:3px}
.nr-bars{display:inline-flex;align-items:flex-end;gap:2px;height:16px}
.nr-bars>i{display:block;width:4px;border-radius:2px;background:#d8e5dd;height:7px}
.nr-bars>i:nth-child(2){height:11px}.nr-bars>i:nth-child(3){height:16px}
.nr-easy .nr-bars>i:first-child,.nr-medium .nr-bars>i:nth-child(-n+2),.nr-hard .nr-bars>i{background:#46755d}
.nr-rating .nr-status,.nr-rating .bq2-status,.nr-rating .bq2-saved{font-size:11px;color:#226743;margin:8px 0 0;padding:0;background:transparent;border:0}
.nr-rating .bq2-error,.nr-rating .is-error{color:#a4392c}
.nr-rating .nr-note{display:block;font-size:10px;color:var(--nr-muted);margin-top:7px}
.nr-rating .bq2-summary{border-top:1px solid var(--nr-line);padding-top:7px;margin-top:8px;display:block;font-size:11px;color:var(--nr-muted)}
.nr-rating .bq2-retry{border:1px solid #c6d7cc;border-radius:8px;padding:7px 10px;background:#fff;color:#245b42;cursor:pointer;font:inherit;font-size:11px;min-height:44px;margin-top:7px}
.nr-rating [hidden]{display:none!important}
.nr-quality>strong{display:block;font-size:13px;margin:5px 0}
.nr-quality>p{font-size:11px;color:var(--nr-muted);margin:5px 0 8px}
.nr-quality .eduq-rating-badge{font-size:10px;padding:3px 7px}
.nr-quality-options{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px}
.nr-rating .nr-quality-options>button{flex-direction:column;font-size:10px;gap:4px;min-width:0;padding:7px 4px}
.nr-quality [data-rating-result]{display:block;margin-top:8px;font-size:11px;color:var(--nr-muted)}
body.dark .nr-rating,body.dark-mode .nr-rating,[data-theme="dark"] .nr-rating{--nr-bg:#14251f;--nr-ink:#e0ede6;--nr-muted:#a5bdb0;--nr-line:#365347}
body.dark .nr-rating .nr-choice,body.dark-mode .nr-rating .nr-choice,body.dark .nr-radio>span,body.dark-mode .nr-radio>span,[data-theme="dark"] .nr-rating .nr-choice,[data-theme="dark"] .nr-radio>span{background:#1d3229;color:var(--nr-ink)}
@media(max-width:480px){.nr-rating{padding:10px}.nr-options{gap:5px}.nr-rating .nr-choice,.nr-radio>span{padding:6px 4px;gap:5px;font-size:11px}.nr-quality-options{grid-template-columns:repeat(3,minmax(0,1fr))}.nr-heading{gap:7px}.nr-rating.nr-rating h3{font-size:12px}}
@media(prefers-reduced-motion:reduce){.nr-choice,.nr-radio>span{transition:none}}
.nr-status:empty,.bq2-status:empty,.nr-quality [data-rating-result]:empty{display:none}
.nr-rating [aria-busy=true] .nr-radio{cursor:wait}.nr-rating [aria-busy=true] .nr-radio>input:not(:checked)+span{opacity:.55}