:root{--navy:#122c45;--navy2:#1b3c58;--blue:#235a7a;--teal:#24665f;--paper:#f8f9f6;--ink:#203345;--muted:#6f7c85;--line:#dfe5e5;--white:#fff;--lime:#d6e9ab;--danger:#a73636;font-family:Inter,"Segoe UI",Arial,sans-serif;color:var(--ink);font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:var(--paper);font-size:15px;line-height:1.5}button,input,select,textarea{font:inherit}button,a,input,textarea,select{outline-offset:4px}button{cursor:pointer}button:disabled{cursor:wait;opacity:.55}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}button{border:0}button:focus-visible,a:focus-visible{outline:3px solid #92b3ce}[hidden]{display:none!important}h1,h2,h3,p{margin-top:0}h2{font-weight:600;font-size:24px;letter-spacing:-.7px}label{display:block;font-size:13px;font-weight:600}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);padding:12px 14px}input:focus,select:focus,textarea:focus{outline:2px solid #8cb4c9;outline-offset:1px}input{margin:7px 0 18px}textarea{resize:vertical}button.primary,.primary{display:inline-flex;align-items:center;justify-content:center;gap:20px;background:var(--navy);color:#fff;border-radius:8px;padding:13px 20px;font-weight:600}button.primary:hover{background:var(--blue)}.secondary{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);padding:11px 18px;font-weight:600}.muted,.fine{color:var(--muted)}.fine{font-size:12px;line-height:1.7}.eyebrow{font-size:11px;font-weight:700;letter-spacing:2px}.eyebrow.ink{color:var(--teal)}.brand{display:flex;align-items:center;gap:11px;font-size:20px;letter-spacing:2px;color:white;font-weight:600;white-space:nowrap}.brand:hover{text-decoration:none}.brand b{font-size:11px;font-weight:500;color:var(--lime);border:1px solid #ffffff36;padding:3px 6px;border-radius:5px;letter-spacing:1px}.brand-mark{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:2px solid currentColor;border-radius:50%;font:30px Georgia,serif;line-height:1;padding-bottom:6px;transform:rotate(-15deg)}.auth-shell{min-height:100vh;display:grid;grid-template-columns:1fr 1fr}.auth-story{background:var(--navy);color:white;padding:44px 8%;display:flex;flex-direction:column;min-height:100vh;overflow:hidden}.story-copy{margin:auto 0;padding-top:55px}.story-copy .eyebrow{color:var(--lime)}.story-copy h1{font:500 clamp(38px,4vw,60px)/1.12 Georgia,serif;letter-spacing:-1px;margin:24px 0}.story-copy p{color:#c1ced5;max-width:390px;font-size:16px;line-height:1.8}.story-footer{display:flex;justify-content:space-between;gap:15px;border-top:1px solid #ffffff26;padding-top:22px;margin-top:25px;font-size:9px;letter-spacing:1.6px;color:#c1ced5}.document-art{height:235px;position:relative;margin:22px 0 0 65px;width:280px}.art-sheet{position:absolute;top:5px;left:25px;background:#edf2ec;width:210px;height:220px;padding:26px;color:var(--navy);border-radius:5px 5px 0 0;transform:rotate(8deg);box-shadow:0 12px 50px #081b2a30}.art-sheet>span{font-size:7px;font-weight:700;letter-spacing:1px}.art-sheet i{display:block;height:4px;background:#b7c7c7;border-radius:2px;margin:13px 0;width:100%}.art-sheet i:nth-of-type(2){width:80%}.art-sheet strong{display:block;font:italic 20px Georgia,serif;margin:23px 0 5px}.art-back{left:-25px;top:25px;transform:rotate(-12deg);background:#84a8b3}.art-check{position:absolute;right:-22px;bottom:27px;width:55px;height:55px;background:var(--lime);border-radius:50%;display:grid;place-items:center;font-size:24px}.auth-content{padding:60px;display:flex;flex-direction:column;align-items:center;justify-content:center}.auth-card{width:min(100%,390px);margin:auto}.auth-card h2{font-size:30px;line-height:1.2;margin:17px 0}.auth-card form{margin:32px 0 22px}.auth-card .primary{width:100%;justify-content:space-between}.auth-foot{font-size:11px;color:var(--muted);margin:40px 0 0}.text-button{padding:0;background:none;color:var(--blue);font-size:12px}.workspace{display:flex;min-height:100vh}.sidebar{width:265px;min-width:265px;height:100vh;position:sticky;top:0;background:var(--navy);color:#e1eaf0;padding:30px 20px 20px;display:flex;flex-direction:column}.sidebar .brand{margin:0 10px 36px}.new-chat{display:flex;align-items:center;gap:12px;padding:13px 16px;border:1px solid #ffffff38;border-radius:8px;background:#ffffff09;color:white;text-align:left}.new-chat:hover{background:#ffffff17}.new-chat>span{font-size:21px;font-weight:300}.side-label{color:#849daf;font-size:10px;letter-spacing:1.7px;margin:31px 13px 12px}.chat-list{overflow-y:auto;min-height:90px;flex:1}.chat-list button{display:block;max-width:100%;width:100%;text-align:left;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;background:transparent;border-radius:7px;color:#becdd7;padding:11px 13px;font-size:13px;margin:2px 0}.chat-list button:hover,.chat-list button.active{background:#28465f;color:#fff}.chat-empty{font-size:12px;color:#93a9b9;padding:4px 13px}.side-bottom{margin-top:30px}.usage{padding:16px 12px;color:#9fb6c6;font-size:10px}.usage>div{display:flex;justify-content:space-between}.usage b{font-weight:500;color:#d1dfe8}.usage small{font-size:9px;color:#8ea5b6}progress{display:block;width:100%;height:4px;border:0;border-radius:5px;overflow:hidden;margin:10px 0 5px;background:#ffffff17}progress::-webkit-progress-bar{background:#ffffff17}progress::-webkit-progress-value{background:var(--lime)}.profile{border-top:1px solid #ffffff20;padding:19px 5px 0;display:flex;align-items:center;gap:10px;min-width:0}.avatar{width:32px;height:32px;display:grid;place-items:center;border-radius:50%;background:#d9e8e0;color:var(--navy);font-size:11px;font-weight:700}.profile>div{flex:1;min-width:0}.profile strong,.profile small{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.profile strong{font-size:11px;font-weight:600}.profile small{font-size:9px;color:#8ea6b7}.icon-button{background:transparent;color:inherit;font-size:22px;padding:5px}.side-link{display:block;margin:10px 12px 20px;font-size:12px;color:#c7d8e4}.main{flex:1;min-width:0}.topbar{height:79px;padding:0 42px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);background:#ffffff55}.topbar>div{display:flex;align-items:center;gap:12px}.breadcrumb{font-size:13px;color:var(--muted)}.model-label{font-size:12px;font-weight:500}.model-label b{border:1px solid #d7dfdc;border-radius:4px;padding:2px 6px;font-size:9px;color:var(--teal);font-weight:600}.model-dot{width:6px;height:6px;border-radius:50%;background:#57798d}.mobile-only{display:none}.chat-view{display:flex;flex-direction:column;min-height:calc(100vh - 79px);max-width:1050px;margin:0 auto;padding:0 45px}.welcome{margin:auto 0;padding:60px 0 50px}.welcome h1{font-size:clamp(34px,3.7vw,52px);line-height:1.13;letter-spacing:-1.7px;font-weight:400;margin:23px 0 19px}.welcome h1 em{font-family:Georgia,serif;color:var(--teal);font-weight:400}.welcome>p{color:var(--muted);font-size:14px;line-height:1.8}.suggestions{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:40px}.suggestions>button{position:relative;display:flex;flex-direction:column;text-align:left;background:#fff;border:1px solid var(--line);border-radius:10px;padding:21px 18px;transition:border-color .15s,transform .15s;color:var(--ink)}.suggestions>button:hover{border-color:#8caeb3;transform:translateY(-2px)}.suggestion-icon{color:var(--teal);font-size:23px;margin-bottom:20px;height:27px}.suggestions strong{font-size:12px;font-weight:600;padding-right:15px}.suggestions small{color:var(--muted);font-size:10px;margin-top:6px}.suggestions .arrow{position:absolute;right:14px;top:18px;color:#9cb1bb;font-size:18px}.composer-wrap{position:sticky;bottom:0;background:linear-gradient(transparent,var(--paper) 15px);padding:15px 0 20px;margin-top:auto}.composer{border:1px solid #cdd8d9;background:white;border-radius:12px;box-shadow:0 5px 20px #18324905}.composer textarea{border:0;border-radius:12px;min-height:96px;max-height:260px;padding:20px;font-size:14px;resize:vertical;background:transparent}.composer textarea:focus{outline:0}.composer:focus-within{border-color:#6f9cae;box-shadow:0 0 0 2px #235a7a15}.composer textarea::placeholder{color:#9aa6ad}.composer-bottom{display:flex;align-items:center;justify-content:space-between;padding:6px 13px 12px;gap:10px}.composer-tools{display:flex;align-items:center;gap:18px}.attach-button{display:flex;align-items:center;gap:7px;font-size:11px;cursor:pointer;color:var(--muted);white-space:nowrap}.attach-button>span{font-size:23px;color:var(--ink)}.format-label{display:flex;align-items:center;gap:6px;font-size:10px;color:var(--muted);font-weight:400}.format-label select{font-size:11px;border:0;background:#f2f5f3;padding:7px;width:auto;border-radius:5px;color:#506372}.send-button{display:flex;align-items:center;gap:15px;background:var(--navy);color:white;padding:9px 14px;border-radius:7px;font-size:11px;white-space:nowrap}.send-button span{font-size:19px;line-height:1}.composer-note{font-size:10px;line-height:1.6;color:#8c999f;margin:11px 7px 0;text-align:center}.files-list{display:flex;flex-wrap:wrap;gap:8px;padding:5px 0 10px}.file-chip{background:#fff;border:1px solid var(--line);border-radius:6px;padding:7px 10px;font-size:11px;max-width:100%;overflow-wrap:anywhere}.messages{padding-top:32px;padding-bottom:10px}.message{padding:23px 0;border-bottom:1px solid var(--line);margin-bottom:10px}.message.user{background:#ecf1ef;border:0;border-radius:10px;padding:19px 22px;margin-left:35px}.message-label{font-size:10px;font-weight:700;color:var(--teal);letter-spacing:1px;margin-bottom:13px}.message-body{font-size:14px;line-height:1.85;overflow-wrap:anywhere;white-space:pre-wrap}.message-body p{margin:0 0 13px}.message-body h3{font-size:18px;line-height:1.4;margin:24px 0 12px}.message-body pre{overflow-x:auto;background:#eaf0ef;padding:14px;border-radius:7px;font-size:12px}.result-files{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.result-file{display:flex;align-items:center;gap:12px;border:1px solid #d5e0dc;background:white;border-radius:8px;padding:13px 17px;font-size:12px}.file-type{font-size:9px;letter-spacing:.6px;font-weight:700;background:#edf2ef;color:var(--teal);padding:8px 6px;border-radius:4px}.result-file small{display:block;color:var(--muted);font-size:10px}.text-download{font-size:11px;display:inline-block;margin-top:15px}.job-status{display:flex;align-items:center;gap:11px;color:var(--muted);font-size:12px;padding:20px 0}.spinner{display:block;width:15px;height:15px;border:2px solid #d7e4de;border-top-color:var(--teal);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.job-error{background:#faf0e3;color:#8b612c;border:1px solid #e9d8bc;border-radius:7px;padding:12px;font-size:12px;margin-top:14px}.connection-banner{background:#eef2e7;color:#5b6a4c;border-bottom:1px solid #dde5ce;padding:11px 42px;font-size:12px}.notice{position:fixed;right:24px;top:18px;max-width:min(500px,calc(100vw - 48px));z-index:100;padding:15px 20px;border:1px solid #d3dcd9;background:#fff;border-radius:9px;box-shadow:0 8px 40px #152f4220;font-size:13px}.notice.error{border-color:#d9a9a9;color:var(--danger)}.loading{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--teal);gap:18px;font-size:13px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.admin-view{padding:40px;max-width:1300px;margin:auto}.admin-heading{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:24px}.admin-heading h1{font-size:30px;letter-spacing:-1px;font-weight:500;margin:12px 0}.admin-heading .secondary{font-size:11px;white-space:nowrap}.service-status{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:25px}.service-pill{font-size:11px;padding:8px 12px;background:#e7efe9;border-radius:5px;color:var(--teal)}.service-pill.off{background:#f5ecdd;color:#8c6b36}.admin-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:28px;min-width:0}.panel-number{font-size:11px;color:var(--teal);margin-bottom:20px;letter-spacing:2px}.panel h2{font-size:21px;margin-bottom:12px}.panel>.muted{font-size:12px;line-height:1.7;margin-bottom:24px}.panel form{margin:20px 0 15px}.panel label{font-size:11px}.panel input{font-size:12px}.panel button{font-size:12px}.wide{grid-column:1/-1}.field-row{display:flex;gap:12px}.field-row>label{flex:1;min-width:0}.panel details{border-top:1px solid var(--line);padding-top:17px;margin-top:23px;font-size:11px;color:var(--muted);line-height:1.8}.panel summary{cursor:pointer;color:var(--ink);font-weight:600}.panel details ol{padding-left:17px}.panel details li{margin:10px 0}.code-block{display:block;overflow-wrap:anywhere;background:#eff3f1;padding:12px;border-radius:5px;font-size:10px;margin:10px 0;color:var(--ink)}.count-badge{font-size:10px;vertical-align:middle;border:1px solid var(--line);padding:3px 7px;border-radius:5px;margin-left:8px;color:var(--teal)}.invite-form{display:flex;gap:14px;align-items:end}.invite-form label{flex:1;min-width:0}.invite-form input{margin-bottom:0}.invite-form button{height:44px;white-space:nowrap}.invite-result{border:1px solid #c7dacb;background:#eff5ef;border-radius:8px;padding:16px;display:flex;align-items:center;gap:12px;margin:20px 0}.invite-result label{flex:1;min-width:0}.invite-result input{margin-bottom:0}.student-row,.admin-job{display:flex;justify-content:space-between;gap:16px;align-items:center;border-top:1px solid var(--line);padding:15px 0}.student-row strong{font-size:12px}.student-row small,.admin-job small{display:block;font-size:11px;color:var(--muted)}.student-row button{font-size:10px;padding:7px 10px}.student-row .student-usage{margin-left:auto;font-size:11px;color:var(--teal);white-space:nowrap}.admin-job{font-size:12px}.empty-note{font-size:12px;color:var(--muted);padding-top:12px}
@media(min-width:1600px){.chat-view{max-width:1150px;padding-left:75px;padding-right:75px}.welcome{padding-top:80px}.welcome h1{font-size:58px}.suggestions{margin-top:48px}.suggestions>button{padding:25px}}
@media(max-width:1100px){.sidebar{width:225px;min-width:225px;padding:25px 14px}.brand{font-size:17px}.sidebar .brand{gap:7px}.chat-view{padding:0 28px}.topbar{padding:0 28px}.suggestions{gap:9px}.suggestions>button{padding:15px 12px}.suggestions strong{font-size:11px}.admin-view{padding:28px}.admin-grid{grid-template-columns:1fr}.wide{grid-column:auto}.auth-content{padding:40px}.auth-story{padding:36px 9%}.document-art{margin-left:30px}}
@media(max-width:760px){.auth-shell{display:block}.auth-story{min-height:auto;padding:24px}.story-copy,.story-footer{display:none}.auth-content{min-height:calc(100vh - 88px);padding:45px 27px}.auth-card h2{font-size:28px}.sidebar{position:fixed;left:-280px;top:0;width:260px;z-index:30;transition:left .2s;box-shadow:8px 0 30px #152f4220}.sidebar.open{left:0}.mobile-only{display:inline-block}.topbar{height:65px;padding:0 20px}.breadcrumb{font-size:11px}.model-label{font-size:10px;gap:6px!important}.model-label b{font-size:8px}.chat-view{padding:0 20px;min-height:calc(100vh - 65px)}.welcome{padding:42px 0 30px}.welcome h1{font-size:39px}.welcome>p{font-size:12px}.suggestions{grid-template-columns:1fr;margin-top:28px;gap:8px}.suggestions>button{padding:13px 16px 13px 50px}.suggestion-icon{position:absolute;left:16px;top:14px;font-size:20px}.suggestions strong{font-size:12px}.suggestions small{font-size:10px;margin-top:3px}.suggestions .arrow{right:18px}.composer-wrap{padding-bottom:14px}.composer textarea{padding:16px;font-size:12px;min-height:89px}.composer-bottom{padding:5px 10px 10px}.composer-tools{gap:11px}.format-label>span{display:none}.format-label select{max-width:100px;font-size:10px;padding:6px}.attach-button{font-size:10px;gap:3px}.send-button{font-size:10px;gap:10px;padding:8px 11px}.composer-note{font-size:9px}.connection-banner{padding:10px 20px;font-size:10px}.message.user{margin-left:15px}.message-body{font-size:13px}.admin-view{padding:27px 18px}.admin-heading{display:block}.admin-heading h1{font-size:26px}.admin-heading .secondary{margin-top:5px}.panel{padding:22px}.invite-form{display:block}.invite-form input{margin-bottom:15px}.invite-form .primary{width:100%}.invite-result{display:block}.invite-result .secondary{margin-top:10px}.student-row{flex-wrap:wrap}.student-row .student-usage{margin-left:0}.result-file{max-width:100%;overflow-wrap:anywhere}.field-row{gap:10px}.notice{right:14px;top:12px;max-width:calc(100vw - 28px)}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}