:root{--paper: #F7F3EA;--ink: #1C1E24;--rail1: #262A32;--rail2: #14161B;--rail-txt: #D9DCE4;--rail-dim: #8A8F9B;--amber: #F3B33D;--line: rgba(255, 255, 255, .09)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0;overflow:hidden}body{font-family:Golos Text,Georgia,serif;background:var(--paper);color:var(--ink)}.brand{position:fixed;top:18px;left:20px;z-index:20;display:flex;align-items:center;gap:10px;pointer-events:none}.brand .mark{width:14px;height:34px;border-radius:4px;background:linear-gradient(180deg,var(--amber),#E29A22)}.brand h1{font-family:Unbounded,sans-serif;font-weight:800;font-size:22px;letter-spacing:.14em;margin:0;line-height:1}.brand small{display:block;margin-top:4px;font-size:11.5px;color:#8b8474}.rail{position:fixed;display:flex;gap:4px;padding:8px;border-radius:16px;background:linear-gradient(180deg,var(--rail1),var(--rail2));border:1px solid var(--line);box-shadow:0 18px 40px #18140a38,inset 0 1px #ffffff12;z-index:30}.rail.vert{flex-direction:column;left:16px;top:50%;transform:translateY(-50%)}.rail.horz{flex-direction:row;align-items:center}.actions{top:16px;right:16px}.people{top:16px;left:50%;transform:translate(-50%);gap:8px;padding:8px 14px}.stylebar{bottom:16px;left:16px;gap:8px;padding:10px 14px}.sep{width:1px;align-self:stretch;margin:6px 3px;background:var(--line)}.btn{width:42px;height:42px;border:0;border-radius:11px;background:transparent;color:var(--rail-txt);cursor:pointer;font-family:inherit;font-size:18px;display:flex;align-items:center;justify-content:center;transition:background .15s,transform .1s}.btn:hover{background:#ffffff14}.btn:active{transform:scale(.94)}.btn.on{color:var(--amber);background:#f3b33d24}.btn.small{width:34px;height:34px;font-size:15px}.glabel{font-size:10.5px;font-weight:600;letter-spacing:.12em;color:var(--rail-dim);text-transform:uppercase}.swatch{width:24px;height:24px;border-radius:50%;cursor:pointer;border:2px solid rgba(255,255,255,.16);padding:0}.swatch.on{border-color:var(--amber);box-shadow:0 0 0 3px #f3b33d38}.wdot{width:34px;height:34px;border:0;border-radius:10px;background:transparent;cursor:pointer;display:flex;align-items:center;justify-content:center}.wdot i{display:block;border-radius:50%;background:var(--rail-txt)}.wdot.on{background:#f3b33d24}.wdot.on i{background:var(--amber)}.status{display:flex;align-items:center;gap:7px;font-size:12.5px;font-weight:500;color:var(--rail-txt)}.status .led{width:8px;height:8px;border-radius:50%;background:var(--amber);box-shadow:0 0 8px #f3b33de6}.status.off{color:var(--rail-dim)}.status.off .led{background:#7a8090;box-shadow:none}.av{width:30px;height:30px;border-radius:50%;margin-left:-6px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;color:#14161b;border:2px solid var(--rail2)}.av:first-child{margin-left:0}.av.teacher{box-shadow:0 0 0 2px var(--amber)}.board-wrap,.board-canvas{position:fixed;top:0;right:0;bottom:0;left:0}.board-canvas{touch-action:none;cursor:crosshair}.text-editor{position:fixed;z-index:50;display:none;margin:0;padding:0 2px;font-family:Golos Text,Georgia,serif;line-height:1.28;background:#ffffffc7;border:1.5px dashed var(--amber);border-radius:4px;outline:none;resize:none;overflow:hidden;white-space:pre}.note{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:#17191eeb;color:#e8e4da;border:1px solid rgba(255,255,255,.1);padding:12px 20px;border-radius:14px;font-size:13px;z-index:40}.lobby{height:100%;display:flex;align-items:center;justify-content:center}.card{width:min(430px,92vw);border-radius:22px;padding:28px;background:linear-gradient(180deg,#282c35,#15171c);border:1px solid rgba(255,255,255,.1);box-shadow:0 30px 80px #00000059;color:var(--rail-txt)}.tabs{display:flex;gap:4px;background:#ffffff0f;border-radius:12px;padding:4px;margin-bottom:20px}.tabs button{flex:1;border:0;background:transparent;border-radius:9px;padding:11px;font-family:inherit;font-size:14px;font-weight:600;color:var(--rail-dim);cursor:pointer}.tabs button.on{background:#f3b33d29;color:var(--amber)}.pane{display:flex;flex-direction:column;gap:10px}label{font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--rail-dim)}input{width:100%;padding:13px 15px;border-radius:12px;font-size:15px;font-family:inherit;background:#ffffff0f;border:1px solid rgba(255,255,255,.14);color:#fff;outline:none}input:focus{border-color:var(--amber)}.cta{border:0;border-radius:12px;padding:13px;font-size:15px;font-weight:600;font-family:inherit;cursor:pointer;margin-top:6px}.cta.primary{background:var(--amber);color:#221a08}.linkbtn{background:none;border:0;color:var(--amber);font-family:inherit;font-size:12.5px;cursor:pointer;padding:4px}.hint{font-size:12.5px;color:var(--rail-dim);line-height:1.6;margin:4px 0}.hint b{color:var(--amber)}.error{color:#e96a5b;font-size:13px}.rooms{display:flex;flex-direction:column;gap:8px;margin-top:8px}.room{display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:12px;background:#ffffff0d;border:1px solid rgba(255,255,255,.1);cursor:pointer}.room:hover{background:#ffffff1a}.room b{flex:1;font-size:14px;color:#fff}.room code{color:var(--amber);font-weight:600}.room span{font-size:12px;color:var(--rail-dim)}.nbtop{top:16px;left:50%;transform:translate(-50%);gap:6px;padding:8px 12px}.tbtn{border:0;border-radius:9px;background:#ffffff0f;color:var(--rail-txt);font-family:inherit;font-size:12px;font-weight:600;padding:8px 11px;cursor:pointer}.tbtn:hover{background:#ffffff21}.tbtn.on{background:#f3b33d29;color:var(--amber)}#nbtitle{font-family:Unbounded,sans-serif;font-size:13px;letter-spacing:.05em;color:#fff;padding:6px 12px;border-radius:9px;cursor:pointer;max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#nbtitle:hover{background:#ffffff14}#nbtitle small{display:block;font-family:Golos Text,sans-serif;font-size:10.5px;color:var(--rail-dim);letter-spacing:.02em}.shelf{position:fixed;left:74px;top:86px;bottom:86px;width:252px;z-index:32;display:flex;flex-direction:column;border-radius:18px;overflow:hidden;background:linear-gradient(180deg,#fdfbf5,#f3eee1);border:1px solid rgba(60,50,20,.14);box-shadow:0 18px 40px #18140a38}.shelf header{padding:14px 16px 10px}.shelf h3{margin:0 0 10px;font-family:Unbounded,sans-serif;font-size:13px;letter-spacing:.1em;color:#3a342a}.shelf-tabs{display:flex;gap:4px;background:#3c321414;border-radius:10px;padding:3px}.shelf-tabs button{flex:1;border:0;background:transparent;border-radius:8px;padding:7px 6px;cursor:pointer;font-family:inherit;font-size:12px;font-weight:600;color:#6a6152}.shelf-tabs button.on{background:#fff;color:#2e2a22;box-shadow:0 1px 4px #0000001a}.nb-list{flex:1;overflow-y:auto;padding:4px 10px 10px}.nbitem{display:flex;align-items:center;gap:8px;padding:10px;margin-bottom:6px;border-radius:12px;cursor:pointer;border:1px solid transparent}.nbitem:hover{background:#ffffffb3}.nbitem.cur{background:#fff;border-color:#f3b33d8c}.nbitem .nbicon{width:30px;height:36px;border-radius:3px 7px 7px 3px;flex:none;background:linear-gradient(160deg,#8fb3e8,#5f86c9);box-shadow:inset 4px 0 #00000024,0 2px 5px #00000026}.nbitem.mine .nbicon{background:linear-gradient(160deg,#f3c777,#dda038)}.nbitem .nbmeta{flex:1;min-width:0}.nbitem .nbmeta b{display:block;font-size:13.5px;font-weight:600;color:#2e2a22;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nbitem .nbmeta span{font-size:11.5px;color:#8a8272}.nbitem .nbacts{display:flex;gap:2px;opacity:0}.nbitem:hover .nbacts{opacity:1}.nbitem .nbacts button{width:26px;height:26px;border:0;border-radius:7px;background:#3c321412;color:#5a5344;cursor:pointer;font-size:13px;line-height:1}.shelf footer{padding:10px}#addNb{width:100%;border:1.5px dashed rgba(60,50,20,.3);background:transparent;color:#5a5344;border-radius:12px;padding:11px;font-family:inherit;font-size:13px;font-weight:600;cursor:pointer}#addNb:hover{background:#fff9;border-color:var(--amber)}.pagenav{bottom:16px;left:50%;transform:translate(-50%);gap:4px;padding:8px 10px}#pageval{min-width:58px;text-align:center;font-size:12.5px;font-weight:600;color:var(--rail-txt);font-variant-numeric:tabular-nums;cursor:pointer;padding:6px 4px;border-radius:8px}#pageval:hover{background:#ffffff14}.ruling{display:flex;gap:2px}.thumbs{position:fixed;bottom:78px;left:50%;transform:translate(-50%);z-index:33;display:flex;flex-wrap:wrap;gap:12px;max-width:min(860px,92vw);max-height:320px;overflow-y:auto;padding:14px;border-radius:18px;background:linear-gradient(180deg,#fdfbf5,#f3eee1);border:1px solid rgba(60,50,20,.14);box-shadow:0 18px 40px #18140a38}.thumb{cursor:pointer;text-align:center}.thumb img{width:106px;height:150px;border-radius:4px;background:#fff;box-shadow:0 2px 8px #00000029;border:2px solid transparent;display:block}.thumb.cur img{border-color:var(--amber)}.thumb span{display:block;margin-top:5px;font-size:11.5px;color:#6a6152;font-weight:600}.zoombar{bottom:16px;right:16px;gap:2px;padding:6px 8px}#zoomval{min-width:52px;text-align:center;font-size:12.5px;font-weight:600;color:var(--rail-txt);font-variant-numeric:tabular-nums;-webkit-user-select:none;user-select:none}#dropzone{position:fixed;top:14px;right:14px;bottom:14px;left:14px;z-index:44;border:3px dashed var(--amber);border-radius:22px;background:#f3b33d14;display:none;align-items:center;justify-content:center;pointer-events:none;font-size:17px;font-weight:600;color:#7a5b1a}#dropzone.show{display:flex}.backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:70;display:flex;background:#1c180e6b;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);align-items:center;justify-content:center}.modal-card{width:min(420px,92vw)}.modal-card h2{font-family:Unbounded,sans-serif;font-size:18px;letter-spacing:.05em;margin:0 0 10px;color:#fff}.modal-card p{margin:0 0 18px;font-size:13.5px;line-height:1.6;color:#a7acb8}.modal-card input{width:100%;padding:13px 15px;border-radius:12px;font-size:15px;font-family:inherit;background:#ffffff0f;border:1px solid rgba(255,255,255,.14);color:#fff;outline:none}.modal-card input:focus{border-color:var(--amber)}.row{display:flex;gap:10px;justify-content:flex-end;margin-top:14px}.cta.danger{background:var(--danger, #E0604D);color:#fff}