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#edf2ee;color:#71858a;gap:5px}.collab-code{background:#edf6f1;color:#12656e;border-radius:10px;padding:10px 14px}.parent-shell{max-width:1160px;padding-top:36px}.parent-header{padding:28px 30px;background:linear-gradient(120deg,#e3f0e9,#f5f4eb);border:1px solid #d6e7df;border-radius:22px;margin-bottom:28px}.parent-header h1{color:#143347;font-size:30px;letter-spacing:-.5px}.parent-eyebrow{display:block;color:#187d87;font-size:10px;font-weight:600;letter-spacing:2.4px;margin-bottom:8px}.parent-shell>.field,.parent-shell>.parent-child{max-width:520px}.parent-shell .segmented{margin-top:6px;margin-bottom:20px;width:fit-content}.collab-thread{border-color:#e2e9e5;border-radius:12px;padding:17px;gap:5px;transition:background .15s,border-color .15s}.collab-thread:hover{background:#f4f8f3;border-color:#b8ddd4}.collab-thread span{font-size:12px;color:#71858a}.collab-thread.active{background:#edf6f1;border-color:#b8ddd4;color:#12656e}.collab-chat-panel{padding:0;overflow:hidden}.collab-chat-heading{padding:20px 24px;border-bottom:1px solid var(--c-line);display:flex;align-items:center;gap:12px}.collab-chat-avatar{width:38px;height:38px;display:grid;place-items:center;border-radius:13px;background:#e3f1ed;color:#187d87;font-size:17px;font-weight:600}.collab-chat-heading strong{display:block;font-size:15px}.collab-chat-heading small{color:#71858a;font-size:11px}.collab-chat{min-height:320px;max-height:52vh;background:#f6f8f5;padding:24px;gap:18px}.collab-bubble{background:#fff;border:1px solid #e2e9e5;border-radius:3px 16px 16px;box-shadow:0 3px 10px #1b335a04;padding:12px 16px;max-width:88%}.collab-bubble .collab-content{margin:6px 0;font-size:14px}.collab-bubble.mine{background:#e3f1ed;border-color:#cde5dc;border-radius:16px 3px 16px 16px}.collab-bubble small{color:#71858a;font-size:10px;margin-top:7px}.collab-composer{background:#fff;padding:18px 24px;border-top:1px solid #e2e9e5}.collab-composer textarea{resize:vertical;min-height:88px;margin-top:0;background:#f6f8f5}.collab-composer-actions{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:12px}@media (max-width: 900px){.collab-columns{grid-template-columns:1fr;gap:18px}.parent-shell{padding:18px 14px 40px}.parent-header{padding:22px;gap:20px;border-radius:18px}.parent-header h1{font-size:26px}.parent-header .collab-row{gap:8px}.parent-header .btn{padding:7px 10px;font-size:12px}.parent-shell .segmented{width:100%;flex-wrap:nowrap;overflow-x:auto}.parent-shell .segmented-item{flex:1;padding:7px 10px}.card-pad{padding:18px}.collab-chat{padding:18px;min-height:240px}.collab-chat-heading,.collab-composer{padding:16px 18px}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation:none!important;transition:none!important}}.invitation-students{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;max-height:240px;overflow:auto;padding:12px;border:1px solid var(--c-line);border-radius:10px}.invitation-results{max-height:420px;overflow:auto}.invitation-results code{letter-spacing:.12em;font-size:15px;white-space:nowrap}