/* Community layer: interactive quiz + student notes wall. Namespaced .cm-* */
.cm-wrap{--cm-ink:#20303a;--cm-muted:#5f6f7c;--cm-line:#e2ddd0;--cm-green:#1f6f54;--cm-green-soft:#e9f5f0;
  --cm-gold:#a9791c;--cm-gold-soft:#fbf1da;--cm-rose:#9c2f3d;--cm-rose-soft:#fbecee;--cm-card:#fff;
  max-width:960px;margin:30px auto 40px;padding:0 20px;color:var(--cm-ink);
  font-family:"Segoe UI",system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;}
.cm-wrap *{box-sizing:border-box}
.cm-block{background:var(--cm-card);border:1px solid var(--cm-line);border-radius:16px;padding:22px 24px;margin-top:18px;box-shadow:0 3px 10px rgba(30,50,70,.05)}
.cm-h{display:flex;align-items:center;gap:11px;margin:0 0 4px}
.cm-h .cm-ic{width:34px;height:34px;flex:0 0 auto;border-radius:9px;display:grid;place-items:center;font-size:17px;background:var(--cm-green);color:#fff}
.cm-h h3{margin:0;font-size:18px;font-weight:800}
.cm-sub{color:var(--cm-muted);font-size:13.5px;margin:2px 0 14px 45px}
@media(max-width:560px){.cm-sub{margin-left:0}}

/* QUIZ */
.cm-quiz .cm-prog{display:flex;gap:6px;margin-bottom:14px;flex-wrap:wrap}
.cm-dot{width:22px;height:6px;border-radius:3px;background:#e3ddcf}
.cm-dot.done{background:var(--cm-green)}
.cm-dot.wrong{background:var(--cm-rose)}
.cm-dot.cur{background:var(--cm-gold)}
.cm-qcount{font-size:12px;color:var(--cm-muted);margin-bottom:6px;font-weight:600;letter-spacing:.03em;text-transform:uppercase}
.cm-qtopic{font-size:11px;font-weight:700;color:var(--cm-green);text-transform:uppercase;letter-spacing:.05em;margin-bottom:4px}
.cm-qtext{font-size:17px;font-weight:700;margin:0 0 14px;line-height:1.4}
.cm-opts{display:flex;flex-direction:column;gap:9px}
.cm-opt{text-align:left;background:#fafbf9;border:1.5px solid var(--cm-line);border-radius:11px;padding:12px 15px;font-size:15px;cursor:pointer;transition:.13s;color:var(--cm-ink);font-family:inherit;line-height:1.4}
.cm-opt:hover:not(:disabled){border-color:var(--cm-green);background:#fff}
.cm-opt:disabled{cursor:default}
.cm-opt.correct{border-color:var(--cm-green);background:var(--cm-green-soft)}
.cm-opt.wrong{border-color:var(--cm-rose);background:var(--cm-rose-soft)}
.cm-opt .cm-mk{float:right;font-weight:800}
.cm-opt.correct .cm-mk{color:var(--cm-green)}
.cm-opt.wrong .cm-mk{color:var(--cm-rose)}
.cm-explain{margin-top:12px;font-size:14px;background:var(--cm-gold-soft);border-left:4px solid var(--cm-gold);padding:11px 14px;border-radius:0 9px 9px 0;color:#5c4210;display:none}
.cm-explain.show{display:block}
.cm-next{margin-top:14px;display:flex;justify-content:flex-end}
.cm-btn{background:var(--cm-green);color:#fff;border:none;border-radius:10px;padding:10px 20px;font-size:14px;font-weight:700;cursor:pointer;font-family:inherit;transition:.13s}
.cm-btn:hover{filter:brightness(1.07)}
.cm-btn.ghost{background:#fff;color:var(--cm-green);border:1.5px solid var(--cm-green)}
.cm-score{text-align:center;padding:12px 0}
.cm-score .cm-big{font-size:44px;font-weight:800;color:var(--cm-green);line-height:1}
.cm-score .cm-lab{color:var(--cm-muted);font-size:14px;margin:6px 0 16px}
.cm-score .cm-msg{font-size:16px;font-weight:700;margin-bottom:14px}

/* NOTES */
.cm-form{display:flex;flex-direction:column;gap:10px;margin-bottom:6px}
.cm-row{display:flex;gap:10px;flex-wrap:wrap}
.cm-row>*{flex:1;min-width:150px}
.cm-input,.cm-select,.cm-ta{width:100%;border:1.5px solid var(--cm-line);border-radius:10px;padding:11px 13px;font-size:14.5px;font-family:inherit;color:var(--cm-ink);background:#fff}
.cm-input:focus,.cm-select:focus,.cm-ta:focus{outline:none;border-color:var(--cm-green)}
.cm-ta{min-height:82px;resize:vertical;line-height:1.5}
.cm-formfoot{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.cm-hint{font-size:12px;color:var(--cm-muted)}
.cm-msg-line{font-size:13px;margin:2px 0;min-height:16px}
.cm-msg-line.err{color:var(--cm-rose)}
.cm-msg-line.ok{color:var(--cm-green)}

.cm-notes{display:flex;flex-direction:column;gap:12px;margin-top:16px}
.cm-empty{color:var(--cm-muted);font-size:14px;text-align:center;padding:18px;background:#faf8f3;border:1px dashed var(--cm-line);border-radius:12px}
.cm-note{border:1px solid var(--cm-line);border-radius:13px;padding:14px 16px;background:#fcfbf8}
.cm-note.pending{opacity:.7}
.cm-note-top{display:flex;align-items:center;gap:9px;margin-bottom:7px;flex-wrap:wrap}
.cm-who{font-weight:700;font-size:14px}
.cm-time{font-size:11.5px;color:var(--cm-muted)}
.cm-topic{font-size:10.5px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--cm-green);background:var(--cm-green-soft);padding:2px 8px;border-radius:999px}
.cm-badge{margin-left:auto;font-size:11.5px;font-weight:700;padding:3px 10px;border-radius:999px;white-space:nowrap}
.cm-badge.verified{background:var(--cm-green-soft);color:var(--cm-green)}
.cm-badge.needs_review{background:var(--cm-rose-soft);color:var(--cm-rose)}
.cm-badge.unchecked{background:#eef1f4;color:#5f6f7c}
.cm-badge.checking{background:var(--cm-gold-soft);color:var(--cm-gold)}
.cm-body{font-size:14.5px;line-height:1.55;white-space:pre-wrap;word-break:break-word}
.cm-ai{margin-top:9px;font-size:12.5px;color:#4a5a64;background:#f4f6f4;border-radius:8px;padding:8px 11px}
.cm-ai b{color:var(--cm-ink)}
.cm-links{margin-top:9px;display:flex;gap:14px;flex-wrap:wrap;font-size:12.5px}
.cm-links a{color:var(--cm-green);font-weight:600;text-decoration:none}
.cm-links a:hover{text-decoration:underline}
.cm-spin{display:inline-block;width:13px;height:13px;border:2px solid rgba(0,0,0,.15);border-top-color:var(--cm-gold);border-radius:50%;animation:cm-rot .7s linear infinite;vertical-align:-2px;margin-right:5px}
@keyframes cm-rot{to{transform:rotate(360deg)}}