/* Shared, comfortable learning workspace. */
.ada-lecture{display:block;background:white}
.ada-teacher{position:sticky;top:100px;display:flex;flex-direction:column;align-items:center;text-align:center;padding:26px 8px 16px;gap:6px}
.ada-portrait{position:relative;width:130px;overflow:hidden;border:1px solid #dce7f2;border-radius:22px;background:#edf3fd}
.ada-portrait img{display:block;width:100%;height:auto;aspect-ratio:1;object-fit:contain;transform-origin:50% 85%}
.ada-teacher strong{font-size:.875rem;color:#294769}.ada-label{font-size:.8125rem;color:#596b81}.ada-state{font-size:.8125rem;border-radius:20px;background:#edf3fd;color:#285bb5;padding:5px 8px;margin-top:4px}
.ada-speaking-bars{position:absolute;bottom:7px;left:50%;transform:translateX(-50%);display:flex;gap:3px;align-items:center;height:18px;padding:3px 8px;border-radius:10px;background:#fff;opacity:0}
.ada-speaking-bars i{width:3px;height:5px;background:#16877e;border-radius:3px}
.ada-teacher[data-state="speaking"] .ada-speaking-bars{opacity:1}
.ada-teacher[data-state="speaking"] .ada-speaking-bars i{animation:ada-voice .45s ease-in-out infinite alternate}
.ada-teacher[data-state="speaking"] .ada-speaking-bars i:nth-child(2){animation-delay:.12s}.ada-teacher[data-state="speaking"] .ada-speaking-bars i:nth-child(3){animation-delay:.25s}
.ada-teacher[data-state="speaking"] img{animation:ada-explain 2.4s ease-in-out infinite}
.ada-teacher[data-state="paused"] .ada-state{background:#fcf2d9;color:#785d1e}
@keyframes ada-voice{to{height:13px}}@keyframes ada-explain{50%{transform:translateY(-3px) rotate(-1deg)}}
@media(max-width:1000px){.ada-lecture{display:block}}
.name-fields{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:480px){.name-fields{grid-template-columns:1fr}}
[hidden]{display:none!important}
.account.login-entry{background:white;color:var(--blue);border-color:var(--line)}
.auth-actions{grid-template-columns:1fr;gap:10px}
.auth-actions .secondary{background:transparent!important;border:1px solid var(--line);font-weight:550}
#authModal .modal-head{align-items:flex-start;gap:12px}
#authModal .modal-head h2{font-size:1.5rem}
#authModal .modal-head p{font-size:.9375rem;line-height:1.6}
:root{--ink:#20334c;--blue:#0877f9;--navy:#073b78;--green:#18c94c;--aqua:#10c8d4;--sky:#edf3fd;--cyan:#16877e;--gold:#f5c558;--paper:#f4f6fa;--muted:#596b81;--line:#dce3ee;--shadow:0 8px 26px #20334c08;--b:#0877f9;--n:#073b78;--g:#18a95c;--y:#f5c558;--bg:#f4f6fa;--m:#596b81;--l:#dce3ee}
body{background:var(--paper);font-family:Inter,"Segoe UI",system-ui,sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased}
button,a,input,select{touch-action:manipulation}
button,a{transition:background .16s,color .16s,border-color .16s,box-shadow .16s}
button{font-weight:650;min-height:44px}
button:hover:not(:disabled){filter:brightness(.97)}
button:disabled{cursor:wait;opacity:.65}
:focus-visible{outline:3px solid #3779dc;outline-offset:3px}
input,select{min-height:46px;color:var(--ink);font-size:1rem!important}
input::placeholder{color:#6b7d91}
input:focus,select:focus{outline:3px solid #dce9fc;border-color:var(--blue)}
.card{border-radius:18px;box-shadow:var(--shadow);border-color:var(--line)}
h1,h2,h3{letter-spacing:-.025em;line-height:1.3;color:inherit}
.card p{font-size:1rem;line-height:1.65}
.app{max-width:1440px}
.brand{font-size:1.15rem;font-weight:750;margin-bottom:36px}
.brand img{display:block;max-width:100%;height:auto}.brandmark{border-radius:12px;box-shadow:none;background:var(--blue)}
body:not(.lesson-studio)>.app{grid-template-columns:230px minmax(0,1fr)}
body:not(.lesson-studio)>.app>aside{background:#fff;backdrop-filter:none;padding:30px 18px}
body:not(.lesson-studio) main{padding:28px 38px 90px;min-width:0}
.nav{border-radius:11px;min-height:50px;font-weight:600;padding:12px 14px;color:#52637a}
.nav span{background:#f0f4fa;border-radius:8px;display:grid;place-items:center;width:30px;height:30px;font-size:1.15rem}
.nav.active{background:#eaf1fd;color:#244f99;box-shadow:inset 3px 0 #285bb5}
.nav.active span{background:#dbe8fc}
.safe{background:#f0f8f6;border-color:#d3e8e2;color:#3b655e;font-size:.875rem;border-radius:12px}
.top{gap:16px;flex-wrap:wrap}
.top h1{font-size:1.125rem;font-weight:650}
.top-actions{gap:10px}
.account,.language,.profile,.lesson-link{font-size:.875rem;font-weight:650;border-radius:10px}
.lesson-link{background:#edf3fd;border-color:#d4e0f5;color:#244f99}
.avatar{background:#f9ebc8}
.hello{background:#eaf1fb;color:#203e68;border:1px solid #d6e2f3;border-radius:20px;padding:26px 30px;box-shadow:none}
.hello:after{display:none}
.hello h2{font-size:clamp(1.6rem,3vw,2rem);font-weight:750}
.hello p{opacity:1;max-width:700px;color:#526885;font-size:1rem;line-height:1.7}
#projects .hello{background:#edf7f4!important;color:#255e56;border-color:#d8e9e3}
#projects .hello p{color:#4c726b}
.grid{gap:18px;margin-top:22px}
.grid>.card{padding:24px;display:flex;flex-direction:column;align-items:flex-start}
.grid>.card h3{font-size:1.125rem;font-weight:700;margin:18px 0 8px}
.grid>.card p{flex:1}
.icon{width:52px;height:52px;border-radius:14px;font-size:1.6rem}
.i1{background:#e7f4f0;color:#187368}.i2{background:#fcf2d9;color:#86620b}.i3{background:#eaf0fb;color:#285bb5}
.go{display:inline-flex;align-items:center;min-height:44px;margin-top:20px;padding:8px 14px;background:#edf3fd;border-radius:10px;font-size:.9375rem}
.section-head{margin-top:32px;gap:12px;flex-wrap:wrap}.section-head span{font-size:.875rem}
.room{padding:20px;flex-wrap:wrap}.room p{font-size:.9375rem}
.join,.send,.upgrade{border-radius:10px;font-weight:650;min-height:44px}
.send{background:var(--blue);color:#fff;padding:10px 18px;font-size:1rem}
.panel{grid-template-columns:minmax(0,1fr) 270px;gap:22px}
.chat{padding:22px;height:clamp(520px,73vh,780px)}
.status{font-size:.875rem;color:#386f65;padding-bottom:12px;border-bottom:1px solid var(--line)}
.bubble{font-size:1rem;line-height:1.75;border-radius:15px;padding:16px 18px;white-space:pre-wrap;overflow-wrap:anywhere}
.ai{background:#f0f4fa;color:#20334c}.me{background:#285bb5;color:white}
.note{font-size:.875rem;line-height:1.6}
.compose{gap:10px;padding-top:16px}.compose input{border-radius:11px;padding:12px 14px}
.suggestion{font-size:.9375rem;line-height:1.5;color:#344f75;background:#f7f9fd;font-weight:550;padding:13px;border-radius:11px;margin-top:12px}
.room-layout{grid-template-columns:minmax(0,1fr) 280px}.board{border-radius:18px}
.step{font-size:.9375rem;line-height:1.6}.sticky{transform:none;box-shadow:none;background:#fff4d4;border-radius:10px}
.parent-head{background:#2d4669;border-radius:18px}.metrics{gap:18px}.metric strong{font-weight:700;margin:8px 0}
.modal{border-radius:20px}.field label,.plan ul,.privacy-note,.auth-error{font-size:.9375rem}.badge{font-size:.875rem}
.lesson-studio .top{height:auto;min-height:76px;padding:16px 28px;box-shadow:0 2px 10px #20334c04}
.lesson-studio .top>span{font-size:.9375rem;color:#596b81}
.lesson-studio .top a{font-size:.9375rem;background:#edf3fd;padding:9px 14px;border-radius:10px}
.lesson-studio .logo{display:flex;align-items:center}.lesson-studio .logo img{display:block;width:168px;height:auto}
.lesson-studio .app{max-width:1600px;padding:24px;grid-template-columns:260px minmax(0,1fr) 320px;gap:22px;align-items:start}
.lesson-studio .app>section{min-width:0}
.lesson-studio .side,.lesson-studio .chat{top:100px;height:calc(100dvh - 125px);padding:20px;scrollbar-width:thin;scrollbar-color:#cad5e5 transparent}
.lesson-studio .side h2,.lesson-studio .chat h2{font-size:1.0625rem;font-weight:700;margin-bottom:20px}
.lesson-studio .field{gap:7px;margin:14px 0}.lesson-studio .field label{font-size:.875rem;font-weight:650;color:#50627a}
.lesson-studio .topics{gap:5px;margin-top:20px}.lesson-studio .topic{font-size:.9375rem;line-height:1.5;padding:11px 12px;background:transparent;border:1px solid transparent;font-weight:550;overflow-wrap:anywhere}
.lesson-studio .topic:hover{background:#f4f7fc}.lesson-studio .topic.on{outline:0;background:#eaf1fd;border-color:#cbdcf6;box-shadow:inset 3px 0 #285bb5;color:#244f99;font-weight:650}
.lesson-studio .note{background:#f5f7fa;border:1px solid #e0e6ef;color:#5a6b80;font-size:.8125rem;padding:12px;border-radius:11px}
.lesson-studio .head{margin-bottom:18px;gap:12px;flex-wrap:wrap}.lesson-studio .crumb{font-size:.875rem;margin-bottom:6px}.lesson-studio h1{font-size:clamp(1.5rem,2.4vw,2rem);font-weight:750}
.lesson-studio .badge{font-size:.8125rem;color:#31665e;background:#edf7f4;font-weight:550}
.lesson-studio .stagebar{background:#294769;padding:16px 20px;font-size:.9375rem;font-weight:650;align-items:center;gap:10px;flex-wrap:wrap}
.lesson-studio .live{font-size:.75rem;letter-spacing:.06em;padding:5px 9px;font-weight:550}
.lesson-studio .progress{height:4px}.lesson-studio .board{background:#fff;min-height:450px;padding:28px 24px 40px;border:0}
.lesson-studio .visual h2{font-size:1.35rem;font-weight:650}.lesson-studio .answer{font-size:2rem;margin:8px}
.lesson-studio .video-copy{box-shadow:none;border:0;padding:0;margin-top:24px;border-radius:0}
.lesson-studio .video-copy h3{font-size:1.2rem;font-weight:700;color:#294769;margin-bottom:18px}
.lesson-studio .video-copy ul{gap:12px}.lesson-studio .video-copy li{background:#f5f7fb;border:1px solid #e7ecf3;padding:14px 16px;line-height:1.8;font-size:1rem;border-radius:12px;overflow-wrap:anywhere}
.lesson-studio .video-counter{font-size:.8125rem;margin-top:16px;color:#596b81}
.lesson-studio .controls{padding:16px;gap:8px;background:#fafbfd}.lesson-studio .controls button{font-size:.875rem;font-weight:600;padding:10px 12px;background:#edf2f9;color:#344f75}
.lesson-studio .controls .primary{background:#285bb5;color:#fff}
.lesson-studio .player-overlay{background:#294769;box-shadow:0 -5px 18px #20334c20;border-radius:0 0 12px 12px;gap:10px}
.lesson-studio .player-overlay .player-toggle{font-size:1rem;font-weight:700;min-height:38px}
.lesson-studio .phases{margin-top:18px;gap:8px}.lesson-studio .phase{font-size:.875rem;padding:12px 8px;color:#596b81;background:transparent;border-color:transparent;font-weight:550}.lesson-studio .phase.on{background:#edf3fd;border-color:#d5e1f5;color:#285bb5}
.lesson-studio .bubble{font-size:1rem;line-height:1.75;padding:14px;white-space:pre-wrap}
.lesson-studio .messages{min-height:160px}.lesson-studio .quick{gap:8px;margin:16px 0}.lesson-studio .quick button{font-size:.875rem;font-weight:550;color:#344f75;padding:10px;line-height:1.45;background:#f7f9fd}
.lesson-studio .compose{flex-wrap:wrap}.lesson-studio .compose input{flex:1 1 150px}.lesson-studio .send{background:#285bb5;color:white}.lesson-studio .small{font-size:.8125rem;line-height:1.65;margin-top:12px}
@media(min-width:851px) and (max-width:1150px){body:not(.lesson-studio) main{padding:24px}.top-actions{justify-content:flex-start}.grid{grid-template-columns:1fr 1fr}.panel{grid-template-columns:minmax(0,1fr) 230px}}
@media(max-width:1250px){.lesson-studio .app{grid-template-columns:240px minmax(0,1fr)}.lesson-studio .chat{grid-column:2;position:static;height:520px}.lesson-studio .side{grid-row:1/3}.lesson-studio .phases{grid-template-columns:1fr 1fr}}
@media(max-width:850px){body:not(.lesson-studio)>.app{display:block}body:not(.lesson-studio)>.app>aside{padding:7px 4px;height:auto;min-height:76px;background:#fff}body:not(.lesson-studio) main{padding:20px 16px 110px}.nav{padding:5px 2px;min-height:58px;font-size:.75rem;border-radius:9px;gap:4px}.nav span{height:26px;width:28px}.nav.active{box-shadow:none}.panel>.card:last-child{display:block}.panel,.room-layout{grid-template-columns:1fr}.panel>.card:last-child{padding:18px}.panel .suggestion{display:block}.top{align-items:flex-start;gap:12px}.top-actions{justify-content:flex-start}.hello{padding:22px}.grid{grid-template-columns:1fr}.chat{height:65dvh;min-height:460px}.bubble{max-width:92%}.room .faces{display:none}.metrics{grid-template-columns:1fr}.stage{grid-template-columns:1fr}.room-layout>.card{display:block}}
@media(max-width:720px){.lesson-studio .top{position:static;padding:14px 16px;gap:10px}.lesson-studio .top>span{display:none}.lesson-studio .top a{margin-left:auto;font-size:.875rem}.lesson-studio .app{display:flex;flex-direction:column;padding:16px;gap:18px}.lesson-studio .side,.lesson-studio .chat{width:100%;position:static;height:auto;padding:18px}.lesson-studio .side{max-height:470px;overflow:auto}.lesson-studio .topics{display:flex;flex-direction:column;max-height:220px;overflow:auto}.lesson-studio .app>section{width:100%}.lesson-studio .field{margin:10px 0}.lesson-studio .head{margin:0 0 16px}.lesson-studio .board{padding:22px 16px 32px;min-height:320px}.lesson-studio .badge{display:inline-block}.lesson-studio .stagebar{padding:14px 16px}.lesson-studio .live{display:none}.lesson-studio .chat{height:540px}.lesson-studio .controls{padding:12px}.lesson-studio .controls button{flex:1 1 120px}.lesson-studio .video-copy li{padding:12px;line-height:1.75}.lesson-studio .player-overlay{position:static;opacity:1;margin:0}.lesson-studio .player-overlay .player-toggle{padding:0}.lesson-studio .phases{grid-template-columns:1fr 1fr}.lesson-studio .quick{grid-template-columns:1fr 1fr}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
.start-learning{display:inline-block;margin-top:18px;padding:13px 18px;border-radius:12px;background:white;color:#073b78;font-weight:800;text-decoration:none}.feedback-link{display:block;margin-top:16px;font-size:.875rem}.consent-row{display:flex;align-items:flex-start;gap:9px;font-size:.875rem;line-height:1.5}.consent-row input{width:20px!important;flex-shrink:0}.service-note{padding:12px;border-radius:10px;background:#fff3d1;color:#4d3800!important}.bubble{white-space:pre-wrap;overflow-wrap:anywhere}.lesson-nav{display:flex;gap:8px;flex-wrap:wrap;padding:12px 16px;border-top:1px solid #dce5f2}.lesson-nav button,.lesson-nav select{border:1px solid #b8cae2;border-radius:10px;background:white;color:#073b78;padding:10px;font:inherit}.lesson-nav #previousSection{border-color:#073b78;color:#073b78;background:#f3f8ff}.lesson-nav #nextSection{border-color:#0877f9;background:linear-gradient(135deg,#0877f9,#08a8c7);color:white;box-shadow:0 5px 13px #0877f933}.lesson-nav #nextSection:hover:not(:disabled){background:linear-gradient(135deg,#076cdf,#16b955)}.lesson-nav button.active{background:#073b78;color:white}.lesson-nav label{display:flex;align-items:center;gap:8px}.lesson-outline{display:grid;grid-template-columns:repeat(auto-fit,minmax(135px,1fr));gap:6px;padding:12px}.lesson-outline button{border:1px solid #dce5f2;border-radius:9px;background:white;padding:9px;text-align:left;font:inherit;font-size:.875rem}.lesson-outline button[aria-current="step"]{border-color:#0877f9;background:#eaf3ff;color:#073b78;box-shadow:inset 3px 0 #18c94c}.lesson-model{margin:12px 0;border:1px solid #c8d7ea;border-radius:14px;padding:16px;background:#f0f7ff}.model-grid{display:grid;gap:5px;justify-content:center;margin:12px auto}.model-cell{width:24px;height:24px;border-radius:5px;background:#0877f9}.lesson-transcript{margin-top:15px;padding:18px;background:white;border:1px solid #dce5f2;border-radius:16px}.lesson-transcript summary{cursor:pointer;font-weight:800}.lesson-transcript p{line-height:1.7}.lesson-transcript li{margin:9px 0;line-height:1.7}.video-counter{font-size:.875rem!important}button:disabled{opacity:.55;cursor:not-allowed}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #10c8d4;outline-offset:3px}input,select{min-width:0}.lesson-studio .app{grid-template-columns:260px minmax(0,1fr) 320px}.lesson-studio .chat .bubble{font-size:1rem}.lesson-studio .small,.lesson-studio .field label,.lesson-studio .note{font-size:.875rem}.lesson-studio .player-overlay{opacity:1!important}.lesson-studio .ada-lecture{min-width:0}
@media(max-width:1200px){.lesson-studio .app{grid-template-columns:230px minmax(0,1fr)}.lesson-studio .chat{grid-column:1/-1;position:static}}@media(max-width:720px){.lesson-studio .app{display:flex}.lesson-outline{grid-template-columns:1fr 1fr}.lesson-nav button{flex:1}.lesson-studio .ada-lecture{display:block}}
.lesson-studio .top>a:last-child{margin-left:auto;border-radius:999px;padding:10px 16px;background:linear-gradient(135deg,#073b78,#0877f9);color:white;box-shadow:0 5px 14px #073b782d}
.lesson-studio .top>a:last-child:hover{background:linear-gradient(135deg,#0877f9,#18c94c)}
.lesson-nav #previousSection{background:#eaf3ff;color:#073b78;border-color:#91b4e8}
.lesson-nav #printLesson{background:linear-gradient(135deg,#073b78,#10c8d4);color:white;border-color:transparent;box-shadow:0 5px 13px #0877f92b}
.lesson-nav #printLesson:hover:not(:disabled){background:linear-gradient(135deg,#0877f9,#18c94c)}
.lesson-outline button{border-color:#cbdcf6;background:linear-gradient(145deg,#fff,#f2f7ff);color:#173f77}
.lesson-studio .controls button{border:1px solid #c8d9ee;background:#edf5ff;color:#073b78}
.lesson-studio .controls button:hover:not(:disabled){border-color:#10c8d4;background:#e4fbf8}
.lesson-studio .controls .primary,.lesson-studio .send{background:linear-gradient(135deg,#0877f9,#08a8c7);color:white;border-color:transparent}
.lesson-studio .send:hover:not(:disabled){background:linear-gradient(135deg,#076cdf,#18c94c)}
.print-lesson-sheet{display:none}
.download-presentation{margin-top:12px;border:0;border-radius:10px;padding:11px 15px;background:#0877f9;color:#fff;font-weight:800;cursor:pointer}.download-presentation:hover{background:#076cdf}
@media print{
  @page{size:A4;margin:15mm}
  body.kt-print-lesson{background:white!important;color:#172033!important}
  body.kt-print-lesson *{visibility:hidden!important}
  body.kt-print-lesson .print-lesson-sheet,body.kt-print-lesson .print-lesson-sheet *{visibility:visible!important}
  body.kt-print-lesson .print-lesson-sheet{display:block!important;position:absolute;inset:0;width:100%;font-family:Arial,sans-serif;font-size:11pt;line-height:1.55}
  body.kt-print-lesson .print-lesson-sheet header{border-bottom:3px solid #1769e0;padding-bottom:12px;margin-bottom:18px}
  body.kt-print-lesson .print-lesson-sheet h1{font-size:22pt;margin:0 0 5px;color:#102b55}
  body.kt-print-lesson .print-lesson-sheet .print-meta{color:#52637a;font-size:10pt}
  body.kt-print-lesson .print-lesson-sheet section{margin:0 0 18px;break-inside:avoid}
  body.kt-print-lesson .print-lesson-sheet h2{font-size:14pt;color:#174c91;margin:0 0 8px;border-bottom:1px solid #cbd9ea;padding-bottom:5px}
  body.kt-print-lesson .print-lesson-sheet h3{font-size:11.5pt;margin:12px 0 4px}
  body.kt-print-lesson .print-lesson-sheet ul{margin:5px 0;padding-left:22px}
  body.kt-print-lesson .print-lesson-sheet li{margin:4px 0}
  body.kt-print-lesson .print-lesson-sheet .print-practice{background:#f3f7fc;border-left:4px solid #f0ad00;padding:12px 15px}
  body.kt-print-lesson .print-lesson-sheet footer{margin-top:25px;padding-top:8px;border-top:1px solid #dce5f2;color:#65748a;font-size:9pt}
}