:root{color-scheme:light;--bg:#f5f6f2;--ink:#20352e;--muted:#77827b;--green:#215a47;--line:#e3e8e1;--mint:#eaf2ea;--warm:#dfb578;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;font-size:14px}
*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:var(--bg);color:var(--ink)}button,input,select,textarea{font:inherit}button{cursor:pointer}a{color:inherit}button:disabled{opacity:.5;cursor:wait}button:focus-visible,a:focus-visible{outline:3px solid #98c1a4;outline-offset:3px}input,select,textarea{border:1px solid var(--line);background:#fff;border-radius:9px;padding:12px 13px;min-width:0;width:100%;color:var(--ink);outline:none}input:focus,select:focus,textarea:focus{border-color:#82aa91;box-shadow:0 0 0 3px #eaf2ea}textarea{resize:vertical;line-height:1.6}.topbar{height:80px;max-width:1280px;margin:auto;padding:0 40px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:11px;text-decoration:none;font-size:16px;letter-spacing:-.5px;font-weight:750}.brand b{font-weight:450;color:var(--muted)}.brand-mark{height:36px;width:36px;background:var(--green);color:#fff;display:grid;place-items:center;border-radius:11px;font:700 23px Georgia,serif}.quiet-link,.text-button{background:none;border:none;color:var(--muted);font-size:12px;text-decoration:none;padding:7px}.text-button:hover,.quiet-link:hover{color:var(--green)}.account-tools{display:flex;align-items:center;gap:12px}.account-tools>span{font-size:12px}.loading{padding:100px;text-align:center;color:var(--muted)}.auth-layout{max-width:1080px;margin:70px auto 100px;padding:0 36px;display:grid;grid-template-columns:1.15fr 1fr;gap:100px;align-items:center}.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:10px;font-weight:750;color:var(--green);display:flex;align-items:center;gap:9px;margin:0 0 20px}.eyebrow:before{content:"";width:22px;height:1px;background:var(--warm)}h1{font:500 clamp(42px,4.5vw,62px)/1.05 Georgia,serif;letter-spacing:-.045em;margin:0 0 22px}h1 em{font-weight:400;color:var(--green)}.lead{font-size:14px;line-height:1.85;color:var(--muted);max-width:345px;margin:0}.intro-footer{display:flex;gap:15px;border-top:1px solid var(--line);padding-top:25px;margin-top:38px;max-width:340px}.small-icon{font-size:24px;color:var(--green)}.intro-footer strong{font-size:12px}.intro-footer p,.access-note{font-size:11px;line-height:1.7;color:var(--muted);margin:7px 0 0}.access-note{max-width:330px;margin-top:25px;font-size:10px}.auth-card,.panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px}.auth-card{box-shadow:0 25px 65px #20352e08}.card-kicker{font-size:9px;font-weight:650;letter-spacing:.13em;color:#94a296}h2{font-size:20px;letter-spacing:-.04em;margin:0 0 7px;font-weight:650}.auth-card h2{font:500 33px Georgia,serif;margin-top:12px}.muted{color:var(--muted);font-size:12px;line-height:1.7;margin:0}.tabs{display:flex;background:#f1f4ef;border-radius:9px;padding:4px;margin:25px 0 22px}.tab{flex:1;border:0;background:none;border-radius:6px;font-size:12px;padding:9px;color:var(--muted)}.tab.active{background:#fff;box-shadow:0 2px 5px #20352e08;color:var(--green);font-weight:650}.form-stack{display:grid;gap:17px}.form-stack label{font-size:11px;display:grid;gap:7px;font-weight:650}.form-stack input,.form-stack select{font-size:12px;font-weight:400}.primary-button{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:12px 16px;color:#fff;background:var(--green);border:0;border-radius:9px;font-size:12px;font-weight:600}.primary-button:hover{background:#174b39}.primary-button span{font-size:18px;font-weight:400}.secondary-button{background:#fff;border:1px solid var(--line);padding:8px 12px;border-radius:8px;color:var(--green);font-size:11px}.secondary-button:hover{background:var(--mint)}.card-footnote{font-size:10px;line-height:1.7;color:#919a93;margin:20px 0 0}.field-hint{font-size:10px;line-height:1.6;color:var(--muted);margin:-8px 0 0}.form-error{font-size:12px;color:#ad4a37;line-height:1.6;margin:0}.admin-layout{max-width:1160px;margin:38px auto 70px;padding:0 36px}.page-heading{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:30px}.page-heading h1{font-size:43px;margin-bottom:10px}.pill,.private-badge{border:1px solid #dbe5dc;color:#6d8475;border-radius:20px;font-size:10px;padding:7px 11px;white-space:nowrap}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:25px 0}.stat{border:1px solid var(--line);border-radius:12px;padding:18px 23px;display:flex;align-items:baseline;gap:15px}.stat strong{font:500 30px Georgia,serif}.stat span{color:var(--muted);font-size:11px}.admin-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.panel-heading{display:flex;gap:15px;align-items:center;margin-bottom:25px}.panel-heading h2{font-size:18px;margin:0 0 5px}.panel-heading p{font-size:11px;color:var(--muted);margin:0}.step{display:grid;place-items:center;width:38px;height:38px;background:var(--mint);color:var(--green);border-radius:12px;font-size:11px}.invite-result{background:var(--mint);border-radius:10px;padding:17px;margin-top:20px;font-size:12px}.invite-result p{font-size:11px;color:var(--muted);line-height:1.7}.invite-result code{display:block;font-size:16px;letter-spacing:2px;margin:15px 0}.invite-result>span{display:block;font-size:10px;margin-top:8px}.wide-panel{margin-top:20px;padding:25px}.section-title{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:18px}.section-title h2{font-size:18px}.section-title p{font-size:10px}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%;font-size:12px;text-align:left}th{font-size:10px;text-transform:uppercase;letter-spacing:.06em;color:#939e94;font-weight:500;padding:12px 8px;border-bottom:1px solid var(--line)}td{padding:15px 8px;border-bottom:1px solid #eff2ed;white-space:nowrap}td:last-child{text-align:right}.empty-text{color:var(--muted);font-size:12px;line-height:1.8;padding:20px 0}.chat-layout{max-width:1200px;height:calc(100dvh - 112px);min-height:520px;margin:0 auto 30px;display:grid;grid-template-columns:300px 1fr;border:1px solid var(--line);border-radius:18px;background:#fff;overflow:hidden}.chat-sidebar{border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0;background:#fcfdfb}.sidebar-heading{padding:28px 23px 20px}.sidebar-heading .eyebrow{margin-bottom:13px}.sidebar-heading h2{font-size:20px}.sidebar-heading p:last-child{font-size:11px}.search-label{padding:0 20px 20px}.search-label input{font-size:11px;padding:10px 12px;background:#f6f8f3}.conversation-list{flex:1;overflow:auto;padding:0 10px}.thread{width:100%;display:flex;gap:11px;padding:16px 12px;border:0;border-radius:11px;text-align:left;color:var(--ink);background:transparent;margin:0 0 4px}.thread:hover{background:#f1f5ed}.thread.selected{background:var(--mint)}.avatar{height:36px;width:36px;flex:0 0 36px;border-radius:12px;display:grid;place-items:center;background:#e5ede3;color:var(--green);font-size:12px;font-weight:650}.thread-details{flex:1;min-width:0}.thread-line{display:flex;align-items:center;justify-content:space-between;gap:6px}.thread-name{font-size:12px;font-weight:650;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.student-label{display:block;font-size:10px;color:#718477;margin-top:4px}.thread-preview{display:block;font-size:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:#89928b;margin-top:7px;max-width:180px}.unread{background:var(--green);color:#fff;font-size:9px;min-width:16px;height:16px;border-radius:50%;display:grid;place-items:center;padding:0 4px}.sidebar-footer{padding:20px;font-size:9px;color:#93a096;display:flex;gap:7px;align-items:center}.online-dot{width:5px;height:5px;border-radius:50%;background:#85ac8d}.conversation-panel{min-width:0;min-height:0}.conversation-content{height:100%;display:flex;flex-direction:column}.conversation-header{display:flex;align-items:center;gap:12px;padding:20px 26px;border-bottom:1px solid #edf0ea;min-height:82px}.conversation-header h2{font-size:14px;margin:0 0 4px}.conversation-header p{font-size:10px;color:var(--muted);margin:0}.private-badge{margin-left:auto;font-size:9px;border:0;background:#f2f6ef}.message-feed{flex:1;overflow:auto;padding:26px;min-height:120px;scroll-behavior:smooth}.message-list{display:flex;flex-direction:column;gap:18px;min-height:100%}.message{max-width:78%;align-self:flex-start}.message.mine{align-self:flex-end}.bubble{padding:12px 15px;border-radius:4px 14px 14px 14px;background:#f0f3ed;white-space:pre-wrap;overflow-wrap:anywhere;font-size:12px;line-height:1.7}.mine .bubble{background:var(--green);color:#fff;border-radius:14px 4px 14px 14px}.message-meta{font-size:9px;color:#9ba59c;display:block;margin:7px 3px 0}.mine .message-meta{text-align:right}.message-form{border:1px solid var(--line);border-radius:12px;margin:10px 24px 0;padding:10px}.message-form textarea{border:0;box-shadow:none;background:transparent;resize:vertical;max-height:160px;min-height:54px;padding:6px;font-size:12px}.composer-footer{display:flex;justify-content:space-between;align-items:center;gap:15px;padding:4px 4px 0}.composer-footer>span{font-size:9px;color:#9ba59c}.composer-footer button{padding:7px 14px;gap:22px;font-size:11px}.conversation-footnote{text-align:center;font-size:9px;color:#9ba59c;margin:11px 10px 16px}.conversation-empty{height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:30px}.conversation-empty h2{font:500 29px Georgia,serif;margin:20px 0 12px}.conversation-empty p{color:var(--muted);font-size:12px;line-height:1.8}.empty-symbol{height:60px;width:60px;border-radius:20px;background:var(--mint);display:grid;place-items:center;color:var(--green);font-size:28px}.older-button{display:block;border:0;background:transparent;color:var(--green);font-size:10px;margin:0 auto 20px;padding:10px}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#203d30;color:#fff;padding:13px 20px;border-radius:10px;box-shadow:0 10px 40px #20352e25;max-width:calc(100% - 32px);font-size:12px;z-index:5;line-height:1.6}dialog{border:1px solid var(--line);border-radius:16px;padding:27px;width:min(420px,calc(100% - 32px));color:var(--ink)}dialog::backdrop{background:#20352e55}.dialog-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.dialog-heading h2{font-size:19px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}#mobile-back{display:none}
@media(max-width:850px){.auth-layout{gap:40px;margin-top:40px}.chat-layout{border-radius:0;grid-template-columns:260px 1fr;margin-bottom:0;height:calc(100dvh - 72px);min-height:440px}.topbar{height:72px;padding:0 24px}.admin-layout{padding:0 24px}.message{max-width:88%}.private-badge{display:none}.account-tools{gap:4px}.account-tools>span{max-width:130px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.auth-card{padding:25px}}
@media(max-width:640px){.topbar{height:64px;padding:0 18px}.brand{font-size:14px;gap:8px}.brand-mark{height:31px;width:31px}.quiet-link{font-size:10px}.auth-layout{display:flex;flex-direction:column;gap:28px;margin:26px auto 50px;padding:0 24px;max-width:460px;align-items:stretch}.intro h1{font-size:42px}.intro .lead{font-size:12px;max-width:350px}.intro-footer,.access-note{display:none}.intro .eyebrow{margin-bottom:15px}.auth-card{border-radius:15px}.admin-layout{margin-top:24px;padding:0 16px}.admin-grid{grid-template-columns:1fr}.page-heading h1{font-size:36px}.page-heading .pill{display:none}.stats{gap:8px}.stat{padding:14px 10px;flex-direction:column;gap:5px}.stat strong{font-size:26px}.stat span{font-size:10px}.panel{padding:22px}.wide-panel{padding:18px}.chat-layout{height:calc(100dvh - 64px);grid-template-columns:1fr;min-height:400px}.conversation-panel{display:none}.chat-layout.show-conversation .chat-sidebar{display:none}.chat-layout.show-conversation .conversation-panel{display:block}#mobile-back{display:block;padding:5px}.conversation-header{padding:14px 16px;gap:10px;min-height:70px}.message-feed{padding:20px 16px}.message-form{margin:8px 12px 0}.composer-footer>span{font-size:8px}.account-tools>span{display:none}.account-tools .text-button{font-size:10px}.search-label{padding:0 20px 17px}.thread-preview{max-width:260px}.conversation-footnote{font-size:8px}.thread{padding:18px 14px}.sidebar-heading h2{font-size:24px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}