:root{--ink:#17213a;--muted:#75809a;--line:#e8ebf4;--bg:#f7f8fc;--white:#fff;--blue:#5d72f7;--blue2:#7bbcff;--violet:#7567f5;--navy:#111a31;--cyan:#47c7e8;--green:#29a87a;--orange:#f1a858;--red:#ef6a77;--shadow:0 22px 60px rgba(53,67,114,.10)}
*{box-sizing:border-box}html{font-family:Onest,system-ui,sans-serif;color:var(--ink);background:var(--bg);font-size:16px}body{margin:0;min-width:320px}button,input,select,textarea{font:inherit}button{cursor:pointer}.app{min-height:100vh}.hidden{display:none!important}
.rail{position:fixed;inset:0 auto 0 0;width:114px;background:#fff;border-right:1px solid var(--line);z-index:30;display:flex;flex-direction:column;align-items:center;padding:18px 10px}.flow-brand{width:94px;height:62px;display:block;overflow:hidden;border-radius:16px}.logo-crop{display:block;width:100%;height:100%;position:relative}.logo-crop img{position:absolute;width:124px;height:124px;object-fit:cover;left:-15px;top:-32px;transform:scale(1.3)}.rail nav{display:flex;flex-direction:column;gap:7px;width:100%;margin-top:25px}.nav{position:relative;border:0;background:transparent;color:#8790a8;border-radius:14px;min-height:62px;padding:9px 4px;display:flex;flex-direction:column;align-items:center;gap:5px;font-size:11px;font-weight:600}.nav i{font-style:normal;font-size:20px;line-height:1}.nav:hover,.nav.active{background:#eef1ff;color:#5267ee}.nav b{position:absolute;top:7px;right:13px;background:#e8ebf5;color:#6d7892;border-radius:12px;padding:1px 5px;font-size:9px}.nav b.attention{background:#ffe8ec;color:#d84558}.rail-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px}.help,.avatar{border:0;border-radius:13px;width:42px;height:42px;font-weight:700}.help{background:#f0f2f8;color:#7d879e}.avatar{background:linear-gradient(135deg,#fae1cc,#eab591);color:#75523e}.mobile-close{display:none}
.workspace{margin-left:114px;min-height:100vh}.topbar{height:88px;padding:0 34px;display:flex;align-items:center;justify-content:space-between;background:rgba(247,248,252,.88);backdrop-filter:blur(18px);position:sticky;top:0;z-index:20;border-bottom:1px solid rgba(229,232,241,.7)}.topbar>div:first-of-type{display:flex;align-items:baseline;gap:12px}.topbar h1{font-size:22px;margin:0}.context{font-size:12px;color:var(--muted);background:#fff;border:1px solid var(--line);padding:5px 9px;border-radius:16px}.top-actions{display:flex;gap:9px;align-items:center}.role,.bell,.soft{border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:12px;padding:11px 15px;font-weight:600}.bell{position:relative;width:43px;padding:11px}.bell span{position:absolute;width:7px;height:7px;border-radius:50%;background:var(--red);top:8px;right:8px;border:2px solid #fff}.create{border:0;background:linear-gradient(135deg,#6c7df9,#5669ed);color:#fff;border-radius:12px;padding:12px 17px;font-weight:700;box-shadow:0 9px 24px rgba(89,106,240,.23);transition:.2s}.create:hover{transform:translateY(-1px);box-shadow:0 12px 28px rgba(89,106,240,.3)}.menu{display:none}
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.metrics{display:grid;grid-template-columns:1.15fr 1fr 1fr;gap:16px;margin-bottom:16px}.metric{position:relative;overflow:hidden;min-height:165px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px}.metric>span{font-size:13px;color:var(--muted);font-weight:600}.metric>strong{display:block;font-size:51px;letter-spacing:-.05em;margin-top:20px;font-weight:600}.metric>strong small{font-size:23px}.metric>p{font-size:12px;color:var(--muted);margin:6px 0}.metric p i{font-style:normal;color:#8be6ff}.hero-metric{color:#fff;background:linear-gradient(135deg,#6777f7 0%,#5576ed 58%,#5daddf 130%);border:0}.hero-metric>span,.hero-metric>p{color:#dce2ff}.orb{position:absolute;width:150px;height:150px;border:28px solid rgba(255,255,255,.13);border-radius:50%;right:-20px;bottom:-37px}.positive{color:var(--green)!important;font-weight:700}.bars{position:absolute;right:20px;bottom:26px;height:70px;display:flex;align-items:flex-end;gap:6px}.bars i{width:10px;height:40%;background:#dfe4ff;border-radius:8px}.bars i:nth-child(2){height:62%}.bars i:nth-child(3){height:52%}.bars i:nth-child(4){height:75%}.bars i:nth-child(5){height:67%}.bars i:nth-child(6){height:91%;background:var(--blue)}.bars i:nth-child(7){height:80%}
.home-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(310px,.75fr);gap:16px}.card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:23px}.section-head{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:15px}.section-head h3,.card h3{margin:0;font-size:20px;font-weight:600}.section-head button{border:0;background:transparent;color:var(--blue);font-weight:600}.homework-row{display:grid;grid-template-columns:48px minmax(200px,1fr) 120px 95px;gap:14px;align-items:center;padding:15px 0;border-top:1px solid var(--line)}.subject{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;font-style:normal;font-weight:700}.violet{background:#eeeaff;color:#7060e4}.cyan{background:#ddf7fb;color:#168ca8}.peach{background:#fff0df;color:#bd7137}.homework-row small,.feed span,.queue small{display:block;font-size:11px;color:var(--muted);margin-top:4px}.mini-progress{display:flex;align-items:center;gap:7px;font-size:11px;color:var(--muted)}.mini-progress i,.student-progress i,.topic i{display:block;height:7px;border-radius:8px;background:#edf0f7;overflow:hidden}.mini-progress i{width:62px}.mini-progress em,.student-progress em,.topic em{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--violet),var(--blue2))}.due{font-size:11px;font-weight:600;color:#647089}.live,.connected{font-size:11px;background:#e7f8f2;color:#21865f;border-radius:20px;padding:6px 9px;font-weight:700}.feed>div{display:flex;gap:11px;margin:20px 0}.person{width:35px;height:35px;display:grid;place-items:center;border-radius:11px;font-style:normal;font-size:11px;font-weight:700;flex:0 0 auto}.feed p{font-size:13px;margin:0}.feed .bot-event{border-top:1px dashed var(--line);padding-top:16px}.tg{background:#e1f4ff;color:#1999d1}.ai-tip{display:flex;gap:10px;padding:15px;background:linear-gradient(135deg,#f0efff,#eff8ff);border-radius:15px;margin-top:20px}.ai-tip>i{font-style:normal;color:var(--violet)}.ai-tip p{margin:0;font-size:12px}.ai-tip span{display:block;color:var(--muted);line-height:1.45;margin:4px 0}.ai-tip button{padding:0;border:0;background:transparent;color:var(--blue);font-size:11px;font-weight:700}
.filters{display:flex;justify-content:space-between;align-items:center;margin-bottom:17px}.filters>div{background:#fff;padding:4px;border:1px solid var(--line);border-radius:13px}.filters button{border:0;background:transparent;color:var(--muted);border-radius:9px;padding:8px 13px;font-size:12px;font-weight:600}.filters button.active{background:var(--navy);color:#fff}.filters label{background:#fff;border:1px solid var(--line);border-radius:12px;padding:9px 12px}.filters input{border:0;outline:0;width:190px}.homework-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.homework-card{min-height:245px;background:#fff;border:1px solid var(--line);border-radius:21px;padding:20px;display:flex;flex-direction:column;transition:.2s}.homework-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.homework-card header{display:flex;justify-content:space-between}.homework-card h3{margin:24px 0 7px;font-size:19px}.homework-card p{margin:0;color:var(--muted);font-size:12px}.homework-card footer{margin-top:auto;border-top:1px solid var(--line);padding-top:14px;display:flex;align-items:center;justify-content:space-between}.homework-card footer span{font-size:11px;color:var(--muted)}.homework-card footer button{border:0;background:#eef1ff;color:var(--blue);border-radius:9px;padding:8px 10px;font-weight:700}.tag{font-style:normal;border-radius:18px;padding:5px 8px;font-size:10px;font-weight:700}.tag.good{background:#e5f7ef;color:#21805e}.tag.warn{background:#fff1df;color:#9b641e}.tag.blue{background:#eaf0ff;color:var(--blue)}
.estimate{background:#fff;border:1px solid var(--line);border-radius:14px;padding:13px 17px;color:var(--muted);font-weight:600}.review-grid{display:grid;grid-template-columns:330px 1fr;gap:16px}.queue{padding:8px}.queue button{width:100%;display:grid;grid-template-columns:38px 1fr auto;gap:10px;align-items:center;text-align:left;border:0;background:transparent;border-radius:14px;padding:13px}.queue button.active{background:#edf0ff}.queue span{font-size:12px}.queue em{font-style:normal;font-size:12px;font-weight:700}.submission{padding:28px}.submission-top{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);font-weight:700}.auto-ok{background:#e6f7ef;color:#21805e;border-radius:18px;padding:6px 9px}.submission h3{font-size:24px;margin:25px 0 16px}.solution-preview{height:260px;border:1px solid #dfe4f1;border-radius:16px;position:relative;overflow:hidden;background:#fbfcff;cursor:pointer}.mini-grid{position:absolute;inset:0;background-image:linear-gradient(#e8ebf3 1px,transparent 1px),linear-gradient(90deg,#e8ebf3 1px,transparent 1px);background-size:24px 24px}.formula{position:absolute;background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 15px;box-shadow:0 7px 17px rgba(35,47,85,.08);font-family:Georgia,serif;font-size:19px}.f1{top:55px;left:80px;transform:rotate(-2deg)}.f2{top:128px;left:300px;transform:rotate(2deg)}.draw-line{position:absolute;width:200px;height:75px;border-top:3px solid var(--violet);border-radius:50%;left:200px;top:100px;transform:rotate(12deg)}.solution-preview>span{position:absolute;bottom:13px;right:16px;color:var(--blue);font-size:11px;font-weight:700}.teacher-verdict{margin-top:18px}.teacher-verdict>div{display:flex;align-items:center;justify-content:space-between}.verdict-buttons{display:flex;gap:8px}.verdict-buttons button,.board-verdict button{border:1px solid var(--line);background:#fff;border-radius:10px;padding:9px 12px;font-weight:600}.verdict-buttons .right.active{background:#e5f7ef;border-color:#b7e8d3;color:#21805e}.teacher-verdict label{display:block;font-size:12px;font-weight:600;margin:15px 0}.teacher-verdict input{width:100%;margin-top:7px;border:1px solid var(--line);border-radius:10px;padding:12px}
.analytics-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:16px}.topic-card,.insight{min-height:350px}.topic{display:grid;grid-template-columns:1fr 50px;gap:9px;margin-top:28px;font-size:13px}.topic b{text-align:right}.topic i{grid-column:1/3;height:9px}.topic em.low{background:linear-gradient(90deg,#f1a858,#f0796c)}.insight{display:flex;flex-direction:column;align-items:flex-start;background:linear-gradient(145deg,#17213b,#27375f);color:#fff;border-radius:22px;padding:26px}.insight>i{display:grid;place-items:center;width:48px;height:48px;border-radius:14px;background:linear-gradient(135deg,#7cbfff,#7567f5);font-style:normal;font-size:22px}.insight .kicker{color:#aeb8d3;margin-top:24px}.insight h3{font-size:25px;margin:0;line-height:1.3}.insight p{color:#b6c0d8;line-height:1.55}.insight button{margin-top:auto;border:0;background:#fff;color:var(--ink);border-radius:11px;padding:11px 14px;font-weight:700}.student-table{padding:8px 22px}.student-row{display:grid;grid-template-columns:1.5fr .7fr .7fr .6fr .8fr;align-items:center;gap:14px;padding:16px 6px;border-bottom:1px solid var(--line);font-size:12px}.student-row>span:first-child{display:flex;align-items:center;gap:10px}.student-row em{font-style:normal;color:var(--green);font-weight:700}.student-row.heading{color:var(--muted);font-size:10px;letter-spacing:.06em}
.telegram-grid{display:grid;grid-template-columns:350px minmax(370px,650px);justify-content:center;align-items:center;gap:35px}.phone{min-height:560px;background:#dfeef8;border:9px solid var(--navy);border-radius:40px;padding:17px;box-shadow:var(--shadow)}.phone-head{display:flex;justify-content:space-between;border-bottom:1px solid rgba(0,0,0,.07);padding:3px 0 13px}.day{display:block;width:max-content;margin:16px auto;background:#b4cedd;color:#fff;border-radius:14px;padding:4px 9px}.message{background:#fff;border-radius:7px 16px 16px 16px;padding:14px;margin-bottom:10px;font-size:12px;box-shadow:0 4px 12px rgba(44,66,83,.07)}.message p{line-height:1.5}.message a{color:var(--blue);font-weight:700}.message>small{display:block;text-align:right;color:#71a2b5}.message.teacher{background:#eef0ff}.notify-settings{padding:27px}.notify-settings>label{display:flex;align-items:center;justify-content:space-between;padding:17px 0;border-bottom:1px solid var(--line)}.notify-settings label small{display:block;color:var(--muted);font-size:11px;margin-top:4px}.notify-settings input,.board-toggle input{display:none}.notify-settings label>i,.board-toggle>i{width:43px;height:25px;background:#dce0e9;border-radius:20px;position:relative;flex:0 0 auto}.notify-settings label>i:after,.board-toggle>i:after{content:"";position:absolute;width:19px;height:19px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s;box-shadow:0 2px 5px rgba(0,0,0,.15)}.notify-settings input:checked+i,.board-toggle input:checked~i{background:var(--blue)}.notify-settings input:checked+i:after,.board-toggle input:checked~i:after{left:21px}.full{width:100%;margin-top:20px}
.student-welcome{background:linear-gradient(135deg,#e9edff,#e8f8ff);border-radius:24px;padding:28px}.streak{display:flex;gap:10px;align-items:center;background:rgba(255,255,255,.7);padding:13px 17px;border-radius:15px}.streak b,.streak small{display:block;font-size:12px}.current-homework{display:grid;grid-template-columns:1.4fr .6fr;gap:25px;padding:30px;background:#fff;border:1px solid var(--line);border-radius:24px}.current-homework h3{font-size:28px;margin:20px 0 10px}.current-homework p{color:var(--muted);line-height:1.55}.student-progress{display:grid;grid-template-columns:1fr auto;gap:8px;margin:28px 0 20px;font-size:12px}.student-progress i{grid-column:1/3;height:9px}.student-progress em{width:63%}.task-visual{border-radius:20px;background:linear-gradient(150deg,#6073f5,#71bee9);display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;gap:18px;font-family:Georgia,serif;font-size:26px}.task-visual i{font-style:normal;color:#b6c4ff}.task-visual b{background:#fff;color:var(--blue);border-radius:12px;padding:9px 15px}.student-bottom{display:grid;grid-template-columns:.4fr .6fr;gap:16px;margin-top:16px}.student-bottom strong{font-size:42px}.student-bottom p{color:var(--muted)}
.modal{border:0;border-radius:24px;padding:0;width:min(590px,calc(100% - 24px));box-shadow:0 35px 100px rgba(25,35,70,.28)}dialog::backdrop{background:rgba(18,26,50,.5);backdrop-filter:blur(5px)}.modal form{padding:28px}.modal-head{display:flex;justify-content:space-between}.modal h2{font-size:28px;margin:0 0 20px}.close,.close-board{border:0;background:#f0f2f7;border-radius:50%;width:36px;height:36px;font-size:21px}.modal form>label:not(.board-toggle),.modal .two label{display:flex;flex-direction:column;gap:7px;margin:14px 0;font-size:12px;font-weight:600}.modal input,.modal select,.modal textarea{border:1px solid var(--line);border-radius:11px;padding:12px;outline:0}.modal input:focus,.modal select:focus{border-color:var(--blue);box-shadow:0 0 0 3px #e8ebff}.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}.modal fieldset{border:0;padding:0;margin:20px 0}.modal legend{font-size:12px;font-weight:600;margin-bottom:8px}.check-card{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:12px;padding:12px;margin:8px 0}.check-card>i{font-style:normal;color:var(--blue)}.check-card small,.board-toggle small{display:block;color:var(--muted);font-size:11px;margin-top:3px}.board-toggle{display:flex;align-items:center;gap:10px;background:#f1f3ff;border-radius:13px;padding:13px}.board-toggle>span{flex:1}.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:22px}
.board-dialog{border:0;padding:0;margin:auto;width:calc(100vw - 28px);height:calc(100vh - 28px);max-width:none;max-height:none;border-radius:22px;overflow:hidden}.board-shell{height:100%;display:flex;flex-direction:column;background:#f7f8fb}.board-shell>header{height:78px;background:#fff;border-bottom:1px solid var(--line);padding:13px 20px;display:flex;align-items:center;justify-content:space-between}.board-shell header h2{font-size:18px;margin:0}.board-shell header>div:last-child{display:flex;align-items:center;gap:12px}.save-state{font-size:11px;color:var(--green);font-weight:600}.board-body{display:grid;grid-template-columns:62px 1fr 300px;min-height:0;flex:1}.board-tools{background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column;align-items:center;gap:8px;padding:12px 8px}.board-tools button{border:0;background:#f2f4f8;border-radius:10px;width:40px;height:40px;font-weight:700;color:#68738c}.board-tools .tool.active{background:#e9edff;color:var(--blue)}.board-tools span{height:1px;background:var(--line);width:35px;margin:4px}.canvas-wrap{position:relative;overflow:hidden;background-color:#fbfcff;background-image:radial-gradient(#d5dbe8 1.2px,transparent 1.2px);background-size:24px 24px}.canvas-wrap canvas{width:100%;height:100%;display:block;touch-action:none}.board-hint{position:absolute;left:50%;bottom:16px;transform:translateX(-50%);background:rgba(23,33,58,.86);color:#fff;border-radius:20px;padding:8px 13px;font-size:11px;pointer-events:none}.task-panel{background:#fff;border-left:1px solid var(--line);padding:20px;overflow:auto}.task-panel>p{line-height:1.5;font-size:13px}.task-panel label{display:block;font-size:11px;font-weight:600;margin:19px 0}.task-panel input,.task-panel textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px;margin-top:7px}.auto-check{width:100%;border:1px solid #cfd6ff;background:#eef1ff;color:var(--blue);border-radius:10px;padding:10px;font-weight:700}.check-result{display:flex;gap:8px;align-items:center;background:#f6f7fa;border-radius:11px;padding:11px;margin-top:9px}.check-result p{margin:0;font-size:11px}.check-result small{display:block;color:var(--muted);margin-top:3px}.check-result.correct{background:#e8f8f1;color:var(--green)}.check-result.incorrect{background:#ffedef;color:var(--red)}.task-panel hr{border:0;border-top:1px solid var(--line);margin:22px 0}.manual-status{display:flex;justify-content:space-between;font-size:11px}.manual-status b{color:var(--orange)}.board-verdict{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-top:12px}.board-verdict button.selected[data-verdict=right]{background:#e5f7ef;color:var(--green);border-color:#bce8d6}.board-verdict button.selected[data-verdict=wrong]{background:#ffedef;color:var(--red);border-color:#f6c7cd}.comment-label textarea{height:74px;resize:vertical}.toast{position:fixed;right:25px;bottom:25px;z-index:100;background:var(--navy);color:#fff;border-radius:12px;padding:13px 18px;box-shadow:var(--shadow);font-size:13px;font-weight:600;opacity:0;transform:translateY(80px);transition:.25s}.toast.show{opacity:1;transform:none}
@media(max-width:1100px){.home-grid,.student-bottom{grid-template-columns:1fr}.homework-grid{grid-template-columns:repeat(2,1fr)}.metrics{grid-template-columns:1fr 1fr}.hero-metric{grid-column:1/3}.review-grid{grid-template-columns:1fr}.queue{display:grid;grid-template-columns:repeat(3,1fr)}.queue button{grid-template-columns:36px 1fr}.queue em{display:none}.board-body{grid-template-columns:58px 1fr 270px}}
@media(max-width:760px){.rail{width:104px;transform:translateX(-110%);transition:.25s;box-shadow:var(--shadow)}.rail.open{transform:none}.mobile-close{display:block;position:absolute;right:5px;top:5px;background:none;border:0}.workspace{margin-left:0}.topbar{height:72px;padding:0 15px}.topbar>div:first-of-type{display:none}.menu{display:block;border:0;background:transparent;font-size:21px}.role{font-size:0;width:42px;height:42px;padding:0}.role:after{content:'♙';font-size:17px}.top-actions .create{font-size:0}.top-actions .create:after{content:'＋';font-size:18px}.view,.student-mode{padding:24px 15px 50px}.hello,.view-head{align-items:flex-start}.flow-action,.view-head>.create{display:none}.metrics{grid-template-columns:1fr}.hero-metric{grid-column:auto}.homework-grid,.analytics-grid,.telegram-grid,.current-homework{grid-template-columns:1fr}.filters>div{overflow:auto;white-space:nowrap}.filters label{display:none}.homework-row{grid-template-columns:44px 1fr}.homework-row .mini-progress,.homework-row .due{display:none}.queue{grid-template-columns:1fr}.submission{padding:18px}.submission-top{gap:10px}.submission h3{font-size:20px}.teacher-verdict>div{align-items:flex-start;gap:10px;flex-direction:column}.telegram-grid{justify-items:center}.notify-settings{width:100%}.student-row{grid-template-columns:1.2fr .5fr .5fr}.student-row>*:nth-child(4),.student-row>*:nth-child(5){display:none}.two{grid-template-columns:1fr}.board-dialog{width:100vw;height:100vh;border-radius:0}.board-shell>header{height:70px}.board-shell header .kicker{display:none}.board-shell header h2{font-size:14px}.save-state{display:none}.board-body{grid-template-columns:50px 1fr}.task-panel{position:absolute;right:0;top:70px;bottom:0;width:280px;transform:translateX(100%);transition:.25s}.board-tools{padding:8px 5px}.board-tools button{width:38px;height:38px}.student-welcome{align-items:flex-start}.streak{display:none}.task-visual{min-height:210px}}