#aiOrb{position:fixed;z-index:2100;width:56px;height:56px;border-radius:50%;border:1px solid #d7b65e;background:radial-gradient(ellipse at 42% 35%,#263348 0%,#0d1523 48%,#070d17 100%);color:#f1d98e;box-shadow:0 5px 22px #0008,0 0 16px #dec27a18,inset 0 0 12px #d7b65e15;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:grab;touch-action:none;padding:0}#aiOrb .ai-sigil{position:absolute;inset:0;width:56px;height:56px;pointer-events:none;filter:drop-shadow(0 0 4px #edcf7655)}#aiOrb span{position:absolute;line-height:1}#aiOrb:focus-visible{outline:2px solid #ead697;outline-offset:4px}#aiOrb:hover{background:#172235;box-shadow:0 0 18px #e5c76b33}#aiOrb:active{cursor:grabbing}#aiOrb[hidden],#aiPanel[hidden],#aiPanel [hidden]{display:none!important}
#aiPanel{position:fixed;z-index:2200;right:18px;bottom:20px;width:520px;max-width:calc(100vw - 24px);height:min(760px,calc(100dvh - 32px));display:flex;flex-direction:column;background:#0e1726;color:#e5eaf2;border:1px solid #bda56977;border-radius:18px;box-shadow:0 20px 70px #000b;overflow:hidden;font:15px/1.65 var(--sans)}#aiPanel header{display:flex;justify-content:space-between;align-items:center;padding:15px 18px;border-bottom:1px solid #ffffff15}#aiPanel header strong{color:#edd48b;font-size:18px}#aiPanel button{border:1px solid #ffffff20;background:#1b293b;border-radius:9px;color:#e5eaf2;padding:7px 10px;cursor:pointer;font:inherit}#aiPanel button:hover{border-color:#ddc078}#aiPanel button:disabled{opacity:.45;cursor:wait}#aiPanel nav{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px;padding:10px 12px;border-bottom:1px solid #ffffff0e}#aiPanel nav button{padding:7px 4px;font-size:13px;white-space:nowrap}#aiPanel nav button.active{border-color:#d8bd72;background:#2a3040;color:#f3d98e;box-shadow:inset 0 -2px #d9bd6d}.ai-content{flex:1;min-height:0;overflow:auto;overscroll-behavior:contain;padding:14px 18px}.ai-welcome{color:#aabbd0;padding-top:25px}.ai-message{margin:0 0 20px;border-radius:12px;padding:12px;background:#152338}.ai-user{background:#273343;margin-left:26px}.ai-message>strong{font-size:12px;color:#e4cb88}.ai-answer{white-space:pre-wrap;overflow-wrap:anywhere;margin-top:6px}.ai-answer strong{color:#f2e4b5;font-weight:650}.ai-answer-heading{display:block;margin-top:8px;font-size:1.05em}.ai-answer code{padding:1px 4px;border-radius:4px;background:#091321;color:#f1d98f;font-family:var(--mono)}.ai-message details{margin-top:14px;padding-top:10px;border-top:1px solid #ffffff18;font-size:13px;color:#b8c9da}.ai-message details summary{cursor:pointer;color:#d8c17e;font-weight:600}.ai-message details section{border-top:1px solid #ffffff20;margin-top:10px;padding-top:8px}.ai-message details small{display:block;color:#8ca9c5}.ai-message details p{white-space:pre-wrap;overflow-wrap:anywhere}.ai-feedback{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}.ai-feedback .selected{border-color:#e4ca7a!important}.ai-feedback select,.ai-feedback input,#aiPanel .ai-request-id{background:#0c1623;color:#e1e9f3;border:1px solid #617184;border-radius:5px;max-width:100%;padding:6px}.ai-notice{margin:0;padding:0 16px;color:#e4bd8d;font-size:13px}#aiPanel form{padding:12px 14px;display:flex;align-items:flex-end;gap:8px;border-top:1px solid #ffffff15}#aiPanel textarea{flex:1;min-width:0;resize:none;background:#080f1b;color:#eef1f7;padding:10px;border:1px solid #5f718a;border-radius:10px;font:inherit;user-select:text!important}#aiPanel form button{background:#b89a4e;color:#0a1420;font-weight:600}.ai-history-row{display:flex;gap:8px;margin-bottom:9px}.ai-restore{flex:1;min-width:0;text-align:left}.ai-restore b{display:block;overflow-wrap:anywhere}.ai-restore small{display:block;font-size:11px;color:#9fafc0}.ai-admin-stats{display:grid;grid-template-columns:1fr 1fr;font-size:13px}.ai-debug{white-space:pre-wrap;word-break:break-word;font-size:12px}#aiPanel input{user-select:text!important}@media(max-width:600px){#aiPanel{inset:8px;width:auto;max-width:none;height:calc(100dvh - 16px);border-radius:12px}#aiPanel nav{grid-template-columns:repeat(3,minmax(0,1fr))}#aiOrb{width:56px;height:56px}}

.ai-exercise-panel h2{margin:0 0 8px;color:#f0d58b;font:600 22px/1.4 var(--serif,var(--sans))}.ai-exercise-tip{margin:0 0 14px;padding:11px 12px;border-left:3px solid #d4b968;background:#17253a;color:#bfd0e2}.ai-exercise-selection-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.ai-exercise-selection-head strong{color:#e8d49d}.ai-exercise-selection-head button{font-size:13px}.ai-exercise-chips{display:flex;flex-wrap:wrap;gap:7px;margin:10px 0 16px}.ai-exercise-chips span{max-width:100%;padding:5px 9px;border:1px solid #9e8d5b66;border-radius:999px;background:#111d2e;color:#cbd9e8;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ai-exercise-panel fieldset{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:16px 0;padding:12px;border:1px solid #ffffff1f;border-radius:12px}.ai-exercise-panel legend{padding:0 6px;color:#e4cc88}.ai-exercise-panel fieldset label{display:flex;align-items:center;gap:8px;padding:8px 9px;border:1px solid #ffffff18;border-radius:8px;background:#101b2b}.ai-exercise-panel input[type=checkbox]{accent-color:#d9bd6d}.ai-exercise-count{display:grid;grid-template-columns:auto 90px 1fr;align-items:center;gap:10px}.ai-exercise-count input{width:90px;box-sizing:border-box;background:#08111e;color:#eef1f7;border:1px solid #64758b;border-radius:8px;padding:8px}.ai-exercise-count small{color:#91a8c0}.ai-exercise-generate{width:100%;margin-top:18px;border-color:#edd48b!important;background:#edd48b!important;color:#091320!important;font-weight:700!important;box-shadow:0 8px 22px #0005,0 0 16px #edd48b30;transition:background .16s,border-color .16s,box-shadow .16s,transform .16s}.ai-exercise-generate:hover:not(:disabled){border-color:#f6e2a7!important;background:#f6e2a7!important;box-shadow:0 10px 26px #0006,0 0 22px #edd48b55;transform:translateY(-1px)}.ai-exercise-generate:active:not(:disabled){transform:translateY(0);background:#dfc477!important}.ai-exercise-generate:focus-visible{outline:2px solid #fff0bc;outline-offset:3px}.ai-exercise-history-row .ai-delete{flex:0 0 auto;color:#efb0aa}@media(max-width:420px){.ai-exercise-panel fieldset{grid-template-columns:1fr}.ai-content{padding-inline:14px}}

#aiOrb,#aiOrb:hover{border:0;background:transparent;box-shadow:none}#aiOrb img{width:100%;height:100%;object-fit:contain;pointer-events:none;filter:drop-shadow(0 2px 4px #0008)}#aiOrb:hover img{filter:drop-shadow(0 0 5px #c6dfff66)}
.ai-source-title{display:flex;align-items:center;justify-content:space-between;gap:10px}.ai-open-note{padding:4px 8px!important;font-size:12px!important;white-space:nowrap}.ai-note-overlay{position:fixed;inset:0;z-index:2600;display:grid;place-items:center;padding:18px;background:#020812c9}.ai-note-dialog{display:flex;flex-direction:column;width:min(900px,94vw);height:min(820px,92dvh);padding:18px;border:1px solid #bda56977;border-radius:14px;background:#101c2d;color:#e8edf4;box-shadow:0 24px 80px #000d}.ai-note-dialog header{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}.ai-note-dialog header strong{display:block;color:#edd48b;font-size:18px}.ai-note-dialog header small{display:block;color:#91a8c0}.ai-note-dialog pre{flex:1;overflow:auto;white-space:pre-wrap;overflow-wrap:anywhere;margin:14px 0 0;padding:18px;border:1px solid #ffffff18;border-radius:10px;background:#091321;color:#e6edf5;font:14px/1.75 var(--sans);user-select:text}@media(max-width:600px){.ai-note-overlay{padding:8px}.ai-note-dialog{width:100%;height:100%;padding:14px;border-radius:10px}}
.ai-note-dialog{background:var(--panel,#0e1726);width:min(1100px,96vw);padding:30px}
.ai-note-dialog header{align-items:center;flex-shrink:0;padding-bottom:20px;border-bottom:1px solid #bda56930}
.ai-note-dialog h1{font:400 30px/1.5 var(--serif,var(--sans));margin:0;color:var(--text,#e8edf4)}
.ai-note-content{overflow:auto;padding:24px 12px;flex:1;min-height:0;scrollbar-color:#8f805344 #0a111c;scrollbar-width:thin}
.ai-note-close{display:grid;place-items:center;flex:0 0 38px;width:38px;height:38px;border-radius:50%;border:1px solid #cab07460;color:#e7d49a;background:#172335;font:26px/1 var(--sans);cursor:pointer;transition:background .2s,border-color .2s}
.ai-note-close:hover{background:#29354a;border-color:#ecd493}
#aiPanel .ai-source-title .ai-open-note{white-space:normal;text-align:left;width:100%;padding:10px 12px!important;font-size:14px!important;color:#e3cf92;background:#0b1523;border:1px solid #c8ad662b}
@media(max-width:600px){.ai-note-dialog{padding:16px}.ai-note-dialog h1{font-size:22px}}
#aiOrb{width:76px;height:76px;border-radius:0;overflow:visible;--orb-x:0px;--orb-y:0px}#aiOrb .orb-motion{position:absolute;inset:0;pointer-events:none;animation:orb-float 5.4s ease-in-out infinite;transition:translate .22s cubic-bezier(.22,1,.36,1),scale .22s cubic-bezier(.22,1,.36,1)}#aiOrb img{position:absolute;width:128%;height:128%;max-width:none;left:-14%;top:-14%;filter:drop-shadow(0 5px 8px #03081560);animation:orb-breathe 4.3s ease-in-out infinite}#aiOrb .orb-nebula,#aiOrb .orb-glass,#aiOrb .orb-question,#aiOrb .orb-halo,#aiOrb .orb-base,#aiOrb .orb-star{position:absolute;pointer-events:none}#aiOrb .orb-nebula{left:12%;top:5%;width:76%;height:72%;border-radius:50%;background:radial-gradient(ellipse at 28% 35%,#e0efff 0%,#9dc7ed88 15%,transparent 38%),conic-gradient(from 40deg,transparent 12%,#b9d9ff 23%,transparent 37%,transparent 64%,#9bbde7 77%,transparent 88%);opacity:.15;mix-blend-mode:screen;animation:orb-cloud 14s linear infinite;translate:var(--orb-x) var(--orb-y)}#aiOrb .orb-glass{left:17%;top:8%;width:62%;height:61%;border-radius:50%;background:radial-gradient(ellipse at 26% 18%,#deefff50,transparent 38%);translate:var(--orb-x) var(--orb-y);opacity:.25}#aiOrb .orb-question{left:38%;top:24%;width:27%;height:39%;border-radius:50%;background:radial-gradient(ellipse,#fff1c9,transparent 70%);mix-blend-mode:screen;opacity:.1;animation:orb-question 4.6s ease-in-out infinite}#aiOrb .orb-halo{left:10%;top:3%;width:80%;height:76%;border:1px solid #a2c5f188;border-radius:50%;box-shadow:0 0 11px #91baf130;opacity:0;transform:scale(.9);transition:opacity .25s,transform .3s}#aiOrb .orb-base{left:29%;top:78%;width:44%;height:18%;border-radius:45%;background:linear-gradient(110deg,transparent 25%,#ffe6a880,transparent 70%);opacity:0;animation:orb-gold 6.7s ease-in-out infinite}#aiOrb .orb-star{width:3px;height:3px;background:#f1dfb4;clip-path:polygon(50% 0,60% 40%,100% 50%,60% 60%,50% 100%,40% 60%,0 50%,40% 40%);opacity:0}#aiOrb .star-one{left:26%;top:35%}#aiOrb .star-two{left:72%;top:25%}#aiOrb .star-three{left:64%;top:60%}
@media(hover:hover) and (pointer:fine){#aiOrb:hover .orb-motion{translate:0 -5px;scale:1.04}#aiOrb:hover .orb-halo{opacity:.25;transform:scale(1.08)}#aiOrb:hover .orb-glass{opacity:.5}#aiOrb:hover img{filter:brightness(1.05) drop-shadow(0 0 8px #91bafa40)}#aiOrb:hover .orb-nebula{opacity:.16}}
#aiOrb.orb-dragging{cursor:grabbing}#aiOrb.orb-dragging .orb-motion{animation-play-state:paused;scale:1.05;translate:0 0}#aiOrb.orb-dragging img{animation-play-state:paused}#aiOrb.orb-dragging .orb-question,#aiOrb.orb-dragging .orb-base{animation:none}#aiOrb.orb-paused *{animation-play-state:paused!important}#aiOrb:focus-visible{outline:1px solid #c5b17f;outline-offset:5px;border-radius:50%}
@keyframes orb-float{0%,100%{transform:translateY(0) rotate(-.35deg)}50%{transform:translateY(-3px) rotate(.35deg)}}@keyframes orb-breathe{0%,100%{scale:1}50%{scale:1.012}}@keyframes orb-cloud{to{transform:rotate(360deg)}}@keyframes orb-question{0%,77%,100%{opacity:.08}88%{opacity:.19}}@keyframes orb-gold{0%,82%,100%{opacity:0}90%{opacity:.12}}@media(prefers-reduced-motion:reduce){#aiOrb *{animation:none!important;transition:none!important}#aiOrb .orb-motion{translate:none!important;scale:1!important}#aiOrb .orb-halo{display:none}#aiOrb .orb-nebula,#aiOrb .orb-glass{translate:none}}
/* Crystal interaction refinements: clip flow to glass, keep the original PNG intact. */
#aiOrb .orb-interior{position:absolute;left:12%;top:5%;width:76%;height:72%;overflow:hidden;border-radius:50%;pointer-events:none}#aiOrb .orb-interior .orb-nebula{left:-5%;top:-5%;width:110%;height:110%;filter:blur(.6px)}#aiOrb .orb-glass{translate:calc(var(--orb-x)*1.5) calc(var(--orb-y)*1.5)}#aiOrb .orb-question{translate:calc(var(--orb-x)*.3) calc(var(--orb-y)*.3);transition:filter .22s,scale .22s}#aiOrb .orb-base{background-size:240% 100%;background-position:100% 0;overflow:hidden}#aiOrb.orb-dragging img{filter:drop-shadow(0 7px 10px #03081580)}
@keyframes orb-gold{0%,82%{opacity:0;background-position:100% 0}85%{opacity:.09}94%{opacity:.09;background-position:0 0}96%,100%{opacity:0;background-position:0 0}}
@keyframes orb-question{0%,77%,100%{opacity:.06;transform:scale(1)}88%{opacity:.3;transform:scale(1.035)}}
@media(hover:hover) and (pointer:fine){#aiOrb:hover .orb-question{filter:brightness(1.2);scale:1.05}#aiOrb:hover .orb-base{filter:brightness(1.1)}}
@media(prefers-reduced-motion:reduce){#aiOrb .orb-question{translate:none!important;scale:1!important;transform:none!important}#aiOrb .orb-interior .orb-nebula{translate:none!important}#aiOrb:hover .orb-motion{translate:none!important;scale:1!important}}

/* Unread teacher information: explicit read acknowledgement controls the glow. */
#aiOrb.has-teacher-unread::after{content:'';position:absolute;inset:-8px;border-radius:50%;pointer-events:none;background:conic-gradient(from 0deg,transparent 10%,#f4d87b 25%,transparent 45%,#adcfff 65%,transparent 85%);mask:radial-gradient(closest-side,transparent 79%,#000 85%,#000 92%,transparent 99%);animation:teacher-flow 2.6s linear infinite;filter:drop-shadow(0 0 6px #f6d476)}
#aiOrb.has-teacher-unread{filter:drop-shadow(0 0 10px #e8c56c)}
#aiPanel [data-act=teacher].has-teacher-unread{position:relative;overflow:hidden;border-color:#f2d581;box-shadow:0 0 16px #e8c56c66}
#aiPanel [data-act=teacher].has-teacher-unread::after{content:'';position:absolute;inset:-100%;pointer-events:none;background:linear-gradient(110deg,transparent 38%,#ffe7a866 50%,transparent 62%);animation:teacher-sweep 2.4s ease-in-out infinite}
.teacher-message small{margin-left:12px;color:#efd178}.teacher-message button:disabled{opacity:.5}
@keyframes teacher-flow{to{transform:rotate(360deg)}}@keyframes teacher-sweep{from{transform:translateX(-65%)}to{transform:translateX(65%)}}
#aiOrb.orb-paused::after{animation-play-state:paused!important}
@media(prefers-reduced-motion:reduce){#aiOrb.has-teacher-unread::after,#aiPanel [data-act=teacher].has-teacher-unread::after{animation:none}}

.ai-note-width{display:flex;align-items:center;gap:12px;flex-shrink:0;margin:12px 0;color:#b5c4d8;font-size:14px}.ai-note-width input{width:min(240px,40vw);accent-color:#c7b8e6}.ai-note-width output{font-variant-numeric:tabular-nums}.ai-note-content{min-height:0;font-size:18px}

.ai-note-dialog{position:relative;box-sizing:border-box;max-width:calc(100vw - 32px)}
.ai-note-edge{position:absolute;top:16px;bottom:16px;width:12px;z-index:3;cursor:ew-resize;touch-action:none;user-select:none}.ai-note-edge.left{left:0}.ai-note-edge.right{right:0}.ai-note-edge:focus-visible{outline:1px solid #d7b65e;border-radius:6px}
#aiPanel .ai-exercise-chips>button{display:inline-flex;align-items:center;gap:7px;max-width:100%;min-height:32px;padding:4px 8px 4px 10px;border:1px solid #9e8d5b66;border-radius:999px;background:#111d2e;color:#cbd9e8;cursor:pointer}#aiPanel .ai-exercise-chips>button:hover,#aiPanel .ai-exercise-chips>button:focus-visible{border-color:#e8c66d;color:#fff0c3}.ai-exercise-chips>button span{min-width:0;max-width:min(62vw,340px);padding:0;border:0;background:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ai-exercise-chips>button b{display:grid;place-items:center;flex:0 0 18px;width:18px;height:18px;border-radius:50%;background:#283a50;color:#e7d18e;font-size:14px;line-height:1}

/* The reading assistant stays a movable window above the reading workspace. */
#aiPanel.ai-reading-popover{
  box-sizing:border-box;
  inset:auto;
  left:var(--ai-reading-x,12px);
  top:var(--ai-reading-y,12px);
  right:auto;
  bottom:auto;
  width:min(420px,calc(100vw - 24px));
  max-width:calc(100vw - 24px);
  height:min(520px,calc(100dvh - 24px));
  max-height:calc(var(--ai-reading-visible-height,var(--visible-height,100dvh)) - 20px);
  border-radius:14px;
}
#aiPanel.ai-reading-popover header{cursor:grab;touch-action:none;-webkit-user-select:none;user-select:none}
#aiPanel.ai-reading-popover header button{cursor:pointer;touch-action:manipulation}
#aiPanel.ai-reading-popover.ai-panel-dragging header{cursor:grabbing}
@media(max-width:600px){
  #aiPanel.ai-reading-popover{
    inset:auto;
    left:var(--ai-reading-x,10px);
    top:var(--ai-reading-y,10px);
    right:auto;
    bottom:auto;
    width:min(340px,calc(100vw - 20px));
    max-width:calc(100vw - 20px);
    height:min(500px,70dvh);
    max-height:calc(var(--ai-reading-visible-height,var(--visible-height,100dvh)) - 20px);
    border-radius:12px;
  }
  #aiPanel.ai-reading-popover header{padding:9px 12px}
  #aiPanel.ai-reading-popover header strong{font-size:15px}
  #aiPanel.ai-reading-popover header button{min-width:38px;min-height:38px;padding:5px}
  #aiPanel.ai-reading-popover nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:4px;padding:6px 8px}
  #aiPanel.ai-reading-popover nav button{min-height:34px;padding:4px 2px;font-size:12px;white-space:nowrap}
  #aiPanel.ai-reading-popover form{padding:8px;gap:6px}
  #aiPanel.ai-reading-popover textarea{max-height:100px;padding:8px}
  #aiPanel.ai-reading-popover .ai-content{padding:10px 12px}
}
@media(max-width:600px) and (max-height:540px){
  #aiPanel.ai-reading-popover{height:min(420px,84dvh);max-height:calc(var(--ai-reading-visible-height,var(--visible-height,100dvh)) - 20px)}
  #aiPanel.ai-reading-popover nav{display:flex;flex-wrap:nowrap;overflow-x:auto}
  #aiPanel.ai-reading-popover nav button{flex:0 0 auto;padding-inline:8px}
  #aiPanel.ai-reading-popover textarea{max-height:64px}
}