:root{
  --bg:#FFFFFF; --side:#F6F8FB; --soft:#EEF2F7; --soft-2:#E4EAF2; --line:#DDE4EE;
  --ink:#16202C; --ink-2:#4A5767; --ink-3:#7A8797;
  --blue:#1D4EA3; --blue-2:#163E84; --blue-soft:#E4ECF8;
  --red:#E52D2D; --red-2:#C42020; --red-soft:#FDE8E8;
  --ok:#1E7A4F; --ok-soft:#E1F3E9; --amber:#9A5B00; --amber-soft:#FFF1D6;
  --on-accent:#FFFFFF; --mark:#FFE68A; --scrim:rgba(10,16,24,.45);
  --shadow:0 1px 2px rgba(22,32,44,.05),0 4px 16px rgba(22,32,44,.07);
  --shadow-lg:0 20px 60px rgba(22,32,44,.22);
  --sans:"Figtree",system-ui,-apple-system,"Segoe UI",sans-serif;
  --serif:"Source Serif 4",Georgia,"Times New Roman",serif;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#12181F; --side:#0D1218; --soft:#1B232D; --soft-2:#242E3A; --line:#2B3643;
  --ink:#E8EDF3; --ink-2:#B4BFCC; --ink-3:#8392A3;
  --blue:#5AA2E6; --blue-2:#86BCF0; --blue-soft:#18304A;
  --red:#F06A7C; --red-2:#F58E9C; --red-soft:#3A1D24;
  --ok:#5CCB93; --ok-soft:#14321F; --amber:#F1B85A; --amber-soft:#3A2A10;
  --on-accent:#0A131D; --mark:#6B5A12; --scrim:rgba(0,0,0,.6);
  --shadow:0 1px 2px rgba(0,0,0,.3),0 4px 16px rgba(0,0,0,.3); --shadow-lg:0 20px 60px rgba(0,0,0,.55); color-scheme:dark;}}
:root[data-theme="dark"]{
  --bg:#12181F; --side:#0D1218; --soft:#1B232D; --soft-2:#242E3A; --line:#2B3643;
  --ink:#E8EDF3; --ink-2:#B4BFCC; --ink-3:#8392A3;
  --blue:#5AA2E6; --blue-2:#86BCF0; --blue-soft:#18304A;
  --red:#F06A7C; --red-2:#F58E9C; --red-soft:#3A1D24;
  --ok:#5CCB93; --ok-soft:#14321F; --amber:#F1B85A; --amber-soft:#3A2A10;
  --on-accent:#0A131D; --mark:#6B5A12; --scrim:rgba(0,0,0,.6);
  --shadow:0 1px 2px rgba(0,0,0,.3),0 4px 16px rgba(0,0,0,.3); --shadow-lg:0 20px 60px rgba(0,0,0,.55); color-scheme:dark;}
*,*::before,*::after{box-sizing:border-box}
html{height:100%;scroll-padding-top:env(safe-area-inset-top,0px)}
body{margin:0;height:100%;background:var(--bg);color:var(--ink);font:15px/1.5 var(--sans);-webkit-font-smoothing:antialiased;transition:background-color .2s,color .2s}
@keyframes fade-up{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@keyframes slide-in{from{opacity:0;transform:translateX(-8px)}to{opacity:1;transform:translateX(0)}}
a{color:var(--blue)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:8px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
[hidden]{display:none!important}
.ico{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s ease,color .2s ease}

/* ================= layout ================= */
.app{height:100%;display:grid;grid-template-columns:268px minmax(0,1fr);min-height:0}
.app.collapsed{grid-template-columns:60px minmax(0,1fr)}
.side{background:var(--side);border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0;overflow:hidden}
.main{display:grid;grid-template-columns:minmax(0,1fr);min-height:0;position:relative}
.main.with-panel{grid-template-columns:minmax(0,1fr) min(440px,42%)}

/* ---------- sidebar ---------- */
.s-top{display:flex;align-items:center;gap:8px;padding:12px 12px 8px}
.logo{display:flex;align-items:center;gap:9px;font-weight:700;font-size:17px;letter-spacing:-.01em;min-width:0}
.logo span{white-space:nowrap}
.ibtn{width:34px;height:34px;border-radius:8px;border:0;background:transparent;display:grid;place-items:center;color:var(--ink-2);flex:none}
.ibtn:hover{background:var(--soft-2);color:var(--ink)}
.ibtn:hover .ico{transform:scale(1.15)}
.s-top .ibtn{margin-left:auto}
.nav{flex:1;min-height:0;padding:4px 8px;display:flex;flex-direction:column;gap:1px;overflow-y:auto}
.nav button{display:flex;align-items:center;gap:10px;border:0;background:none;text-align:left;padding:8px 10px;border-radius:9px;color:var(--ink-2);font-size:14.5px;white-space:nowrap}
.nav button:hover{background:var(--soft-2);color:var(--ink)}
.nav button:hover .ico{transform:scale(1.12)}
.nav .newchat{color:var(--ink);font-weight:600}
.nav .newchat .plus{width:24px;height:24px;border-radius:50%;background:var(--red);color:var(--on-accent);display:grid;place-items:center;margin-left:-3px}
.nav .badge{margin-left:auto;background:var(--red);color:var(--on-accent);border-radius:999px;font-size:11.5px;padding:0 7px;line-height:18px}
.recents{flex:0 1 210px;min-height:76px;max-height:32vh;overflow:auto;padding:5px 2px 6px;margin:4px 0 5px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);animation:slide-in .35s ease both}
.recents-head{display:flex;align-items:center;justify-content:space-between;padding-left:10px}
.recents h3{font-size:11px;font-weight:600;color:var(--ink-3);margin:3px 0 4px}
.recents-head .ibtn{width:26px;height:26px}
.recents-message{margin:4px 10px;color:var(--ink-3);font-size:11px;line-height:1.45}
.recents-message.error{color:var(--bad,var(--red))}
.chatlink{display:flex;align-items:center;border-radius:9px;transition:background-color .2s ease,transform .2s ease}
.chatlink button.t{flex:1;min-width:0;border:0;background:none;text-align:left;padding:7px 10px;font-size:14px;color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chatlink:hover{background:var(--soft-2);transform:translateX(3px)}
.chatlink.on{background:var(--soft-2)}.chatlink.on button.t{color:var(--ink);font-weight:500}
.chatlink .del{opacity:0;width:28px;height:28px}
.chatlink:hover .del,.chatlink .del:focus-visible{opacity:1}
.s-foot{border-top:1px solid var(--line);padding:10px;animation:fade-up .45s ease both}
.me{display:flex;align-items:center;gap:10px;padding:6px;border-radius:10px}
.avatar{width:32px;height:32px;border-radius:50%;background:var(--blue);color:var(--on-accent);display:grid;place-items:center;font-weight:700;font-size:14px;flex:none}
.me b{display:block;font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.me small{display:block;font-size:12.5px;color:var(--ink-3)}
.switch{margin-top:6px;width:100%;display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--bg);border-radius:9px;padding:7px 10px;font-size:13.5px;color:var(--ink-2)}
.switch:hover{border-color:var(--blue);color:var(--ink)}
.app.collapsed .logo span,.app.collapsed .nav button span,.app.collapsed .recents,.app.collapsed .me div,.app.collapsed .switch span,.app.collapsed .nav .badge{display:none}
.app.collapsed .s-top{flex-direction:column}
.app.collapsed .s-top .ibtn{margin:0}
.app.collapsed .nav button{justify-content:center;padding:8px}
.app.collapsed .switch{justify-content:center}
.app.collapsed .me{justify-content:center}

/* ---------- chat column ---------- */
.chat{display:flex;flex-direction:column;min-height:0;min-width:0;animation:fade-up .35s ease both}
.bar{display:flex;align-items:center;gap:10px;padding:10px 16px;min-height:52px}
.bar h2{margin:0;font-size:15px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pill{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:3px 10px;font-size:12.5px;font-weight:600;white-space:nowrap}
.pill.admin{background:var(--red-soft);color:var(--red-2)}
.pill.student{background:var(--blue-soft);color:var(--blue-2)}
.bar .menu{display:none}
.scroll{flex:1;overflow:auto;min-height:0}
.col{max-width:740px;margin:0 auto;padding:0 20px}
.col.view-empty{height:100%;min-height:100%;display:flex;flex-direction:column}

/* hero (empty state) */
.hero{flex:1;min-height:0;display:flex;flex-direction:column;justify-content:center;padding:16px 0}
.hero-mark{display:flex;justify-content:center;margin-bottom:14px}
.hero h1{font:400 clamp(28px,4vw,40px)/1.15 var(--serif);text-align:center;margin:0 0 6px;letter-spacing:-.01em}
.hero p.sub{text-align:center;color:var(--ink-3);margin:0 0 26px}
.chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:16px;width:min(100%, 1120px);margin-left:auto;margin-right:auto}
.chip{border:1px solid var(--line);background:var(--bg);border-radius:999px;padding:7px 13px;font-size:13.5px;color:var(--ink-2);display:inline-flex;align-items:center;gap:7px}
.chip:hover{border-color:var(--blue);color:var(--ink)}
.chip .ico{width:15px;height:15px}

/* composer */
.composer{background:var(--bg);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:12px 12px 10px 16px;transition:border-color .15s}
.composer:focus-within{border-color:color-mix(in srgb,var(--blue) 55%,var(--line))}
.composer textarea{width:100%;border:0;outline:0;background:transparent;resize:none;min-height:28px;max-height:240px;line-height:1.5;font-size:15.5px;padding:2px 0}
.c-row{display:flex;align-items:center;gap:6px;margin-top:6px}
.c-row .sp{flex:1}
.attach-menu{position:relative;display:inline-flex}.attach-pop{position:absolute;left:0;bottom:42px;z-index:25;width:210px;padding:5px;background:var(--bg);border:1px solid var(--line);border-radius:9px;box-shadow:var(--shadow-lg)}.attach-pop button{display:flex;align-items:center;width:100%;gap:8px;border:0;border-radius:6px;background:none;padding:9px 10px;text-align:left;font-size:13px;color:var(--ink-2)}.attach-pop button:hover{background:var(--soft);color:var(--ink)}
.attach-option-icon{display:grid;place-items:center;width:21px;height:21px;border-radius:6px;background:var(--soft-2);color:var(--blue);flex:none}.attach-option-icon .ico{width:14px;height:14px}.user-acts{display:flex;justify-content:flex-end;gap:2px;margin-top:3px;opacity:0;transform:translateY(3px);transition:opacity .18s ease,transform .18s ease}.m.user:hover .user-acts,.m.user:focus-within .user-acts{opacity:1;transform:none}.user-acts .ibtn{width:27px;height:27px}.m.user .wrap{position:relative}.m.user .u{transition:box-shadow .18s ease}.m.user:hover .u{box-shadow:0 4px 14px color-mix(in srgb,var(--ink) 8%,transparent)}
.deep-thinking[aria-pressed="true"]{background:#e8eaf8;color:#6657ad}.deep-thinking[aria-pressed="true"] .ico{color:#6657ad}
.voice.on{color:var(--blue);background:color-mix(in srgb,var(--blue) 12%,transparent)}
.voice.listening{color:var(--red);animation:voice-pulse 1.2s ease-in-out infinite}
.voice.speaking,.acts [data-a="speak"].speaking{color:var(--red);background:color-mix(in srgb,var(--red) 12%,transparent)}
@keyframes voice-pulse{50%{box-shadow:0 0 0 5px color-mix(in srgb,var(--red) 16%,transparent)}}
.send{width:36px;height:36px;border-radius:12px;border:0;background:var(--blue);color:var(--on-accent);display:grid;place-items:center}
.send:hover{background:var(--blue-2)}
.send:disabled{background:var(--soft-2);color:var(--ink-3);cursor:default}
.send.stop{background:var(--red)}
.attached{display:flex;flex-wrap:wrap;gap:8px;margin:2px 0 8px}
.att{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--side);border-radius:12px;padding:7px 8px 7px 10px;font-size:13px;max-width:100%}
.att .fn{font-weight:600;max-width:190px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.att .fz{color:var(--ink-3)}
.att select{border:1px solid var(--line);background:var(--bg);border-radius:7px;font-size:12.5px;padding:2px 4px;max-width:160px}
.att label{display:flex;align-items:center;gap:4px;font-size:12.5px;color:var(--ink-2)}
.att .ibtn{width:24px;height:24px}
.foot-note{text-align:center;font-size:12px;color:var(--ink-3);padding:8px 0 12px}
.dock{padding:0 20px}
.dock .col{padding:0}

/* messages */
.thread{padding:18px 0 26px}
.m{margin:0 0 26px}
.m.user{display:flex;justify-content:flex-end}
.m.user .u{background:var(--soft);border-radius:18px;padding:10px 16px;max-width:85%;white-space:pre-wrap;overflow-wrap:anywhere}
.m.user .files{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end;margin-bottom:6px}
.m.user .wrap{display:flex;flex-direction:column;align-items:flex-end;max-width:85%}
.m.bot{display:grid;grid-template-columns:28px minmax(0,1fr);gap:12px}
.m.bot .mk{padding-top:2px}
.md{font:17px/1.62 var(--serif);overflow-wrap:anywhere}
.md p{margin:0 0 12px}.md p:last-child{margin-bottom:0}
.md ul,.md ol{margin:0 0 12px;padding-left:24px}.md li{margin:4px 0}
.md h3{font:600 17px/1.35 var(--sans);margin:18px 0 8px}
.md strong{font-weight:600}
.md code{font:13.5px/1.4 ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--soft);padding:1px 5px;border-radius:5px}
.md table{border-collapse:collapse;margin:6px 0 12px;font:14px/1.45 var(--sans);display:block;overflow-x:auto}
.md td,.md th{border:1px solid var(--line);padding:6px 10px;text-align:left}
.md th{background:var(--side)}
.cite{display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:18px;padding:0 5px;margin:0 2px;border-radius:5px;border:0;background:var(--blue-soft);color:var(--blue-2);font:700 11px/1 var(--sans);vertical-align:2px}
.cite:hover{background:var(--blue);color:var(--on-accent)}
.srcs{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.src{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:var(--bg);border-radius:9px;padding:5px 10px;font-size:13px;max-width:100%}
.src:hover{border-color:var(--blue)}
.src span:last-child{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dot{width:9px;height:9px;border-radius:3px;flex:none}
.acts{display:flex;gap:2px;margin-top:8px;margin-left:-6px}
.acts .ibtn{width:30px;height:30px}
.acts .ibtn .ico{width:16px;height:16px}
.taskoffer{margin-top:12px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;border:1px solid color-mix(in srgb,var(--ok) 35%,var(--line));background:var(--ok-soft);border-radius:12px;padding:9px 10px 9px 14px;font-size:14px}
.taskoffer span{flex:1;min-width:0}
.btn{border:0;border-radius:10px;padding:8px 14px;font-weight:600;font-size:14px;background:var(--blue);color:var(--on-accent);display:inline-flex;align-items:center;gap:7px;justify-content:center}
.btn:hover{background:var(--blue-2)}
.btn:hover .ico{transform:scale(1.12)}
.btn.red{background:var(--red)}.btn.red:hover{background:var(--red-2)}
.btn.okb{background:var(--ok)}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn.ghost:hover{background:var(--soft)}
.btn.danger{background:transparent;color:var(--red);border:1px solid var(--line)}
.btn.danger:hover{background:var(--red-soft)}
.btn.sm{padding:5px 10px;font-size:13px;border-radius:8px}
.btn:disabled{opacity:.5;cursor:default}
.thinking{display:flex;align-items:center;gap:9px;color:var(--ink-3);font:15px var(--sans)}
.spark{animation:spin 2.4s linear infinite;transform-origin:50% 50%}
@keyframes spin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}
.toolnote{font:13px var(--sans);color:var(--ink-3);display:flex;align-items:center;gap:6px;margin:0 0 8px}
.err{color:var(--red);font:14px var(--sans);margin-top:8px}
.banner{border-radius:12px;padding:10px 14px;font-size:14px;margin:0 0 12px;background:var(--amber-soft);color:var(--ink)}

/* ---------- right panel ---------- */
.panel{border-left:1px solid var(--line);background:var(--bg);display:flex;flex-direction:column;min-height:0;min-width:0}
.p-head{display:flex;align-items:center;gap:8px;padding:12px 12px 12px 18px;border-bottom:1px solid var(--line)}
.p-head h2{margin:0;font-size:15.5px;font-weight:600;flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.p-body{flex:1;overflow:auto;padding:16px 18px 24px}
.meta{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.tag{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:3px 10px;background:var(--soft);font-size:12.5px;color:var(--ink-2)}
.row{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 14px}
.doctext{white-space:pre-wrap;font:15px/1.65 var(--serif);overflow-wrap:anywhere}
.doctext mark{background:var(--mark);color:var(--ink);border-radius:3px}
.box{border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin:0 0 16px}
.search{width:100%;border:1px solid var(--line);background:var(--side);border-radius:10px;padding:9px 12px;margin:0 0 12px}
.cats{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 12px}
.cats button{border:1px solid var(--line);background:var(--bg);border-radius:999px;padding:4px 10px;font-size:12.5px;display:inline-flex;align-items:center;gap:6px;color:var(--ink-2)}
.cats button[aria-pressed="true"]{background:var(--blue-soft);border-color:var(--blue);color:var(--ink)}
.doclist button{display:block;width:100%;text-align:left;border:0;background:none;padding:10px;border-radius:10px}
.doclist button:hover{background:var(--soft)}
.doclist b{display:block;font-weight:600;font-size:14.5px}
.doclist small{display:flex;align-items:center;gap:6px;color:var(--ink-3);font-size:12.5px;margin-top:2px}
.tasks{list-style:none;margin:0;padding:0}
.tasks li{display:flex;gap:10px;align-items:flex-start;padding:11px 0;border-bottom:1px solid var(--line)}
.tasks input{width:18px;height:18px;margin-top:2px;accent-color:var(--ok)}
.tasks .t{flex:1;min-width:0}.tasks .t.done span{text-decoration:line-through;color:var(--ink-3)}
.tasks .due{display:block;font-size:12.5px;color:var(--red)}
.q{border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin:0 0 12px}
.q p{margin:0 0 10px;font-weight:600}
.opt{display:block;width:100%;text-align:left;border:1px solid var(--line);background:var(--bg);border-radius:9px;padding:8px 11px;margin:0 0 6px;font-size:14px}
.opt:hover:not(:disabled){border-color:var(--blue)}
.opt.right{background:var(--ok-soft);border-color:var(--ok)}.opt.wrong{background:var(--red-soft);border-color:var(--red)}
.opt:disabled{cursor:default}
.why{font-size:13.5px;color:var(--ink-2);margin-top:6px}
.small{font-size:13px;color:var(--ink-3)}

/* ---------- modal (settings) ---------- */
.modal{position:fixed;inset:0;z-index:50;display:grid;place-items:center;padding:20px;background:var(--scrim)}
.dialog{width:min(980px,100%);height:min(720px,100%);background:var(--bg);border-radius:18px;box-shadow:var(--shadow-lg);display:grid;grid-template-columns:220px minmax(0,1fr);overflow:hidden}
.tabs{background:var(--side);border-right:1px solid var(--line);padding:18px 10px;display:flex;flex-direction:column;gap:2px}
.tabs h2{font-size:17px;margin:0 10px 14px;font-weight:700}
.tabs button{display:flex;align-items:center;gap:10px;border:0;background:none;text-align:left;padding:9px 10px;border-radius:9px;color:var(--ink-2);font-size:14.5px}
.tabs button:hover{background:var(--soft-2)}
.tabs button[aria-selected="true"]{background:var(--bg);color:var(--ink);font-weight:600;box-shadow:var(--shadow)}
.tabs .badge{margin-left:auto;background:var(--red);color:var(--on-accent);border-radius:999px;font-size:11.5px;padding:0 7px;line-height:18px}
.pane{display:flex;flex-direction:column;min-height:0}
.pane-head{display:flex;align-items:center;gap:10px;padding:18px 22px 12px}
.pane-head h3{margin:0;font-size:19px;font-weight:700;flex:1}
.pane-body{flex:1;overflow:auto;padding:4px 22px 26px}
.sect{padding:16px 0;border-bottom:1px solid var(--line)}
.sect:last-child{border-bottom:0}
.sect h4{margin:0 0 4px;font-size:15px;font-weight:600}
.sect > p.small{margin:0 0 12px}
label.f{display:block;font-size:13.5px;font-weight:600;margin:0 0 5px}
.in{width:100%;border:1px solid var(--line);background:var(--bg);border-radius:10px;padding:9px 11px;margin:0 0 14px}
textarea.in{min-height:120px;resize:vertical;line-height:1.5}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}
.drop{border:1.5px dashed var(--line);border-radius:14px;padding:22px;text-align:center;color:var(--ink-2);font-size:14px}
.drop.over{border-color:var(--blue);background:var(--blue-soft)}
.drop b{display:block;font-size:15px;color:var(--ink);margin-bottom:4px}
.table{width:100%;border-collapse:collapse;font-size:14px}
.table td,.table th{padding:9px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
.table th{font-size:12.5px;color:var(--ink-3);font-weight:600}
.table select{border:1px solid var(--line);background:var(--bg);border-radius:8px;padding:4px 6px;font-size:13px;max-width:190px}
.table .ttl{font-weight:600}
.table .ibtn{display:inline-grid;width:30px;height:30px}
.table .ttl button{border:0;background:none;padding:0;text-align:left;font-weight:600}
.table .ttl button:hover{color:var(--blue);text-decoration:underline}
.svc{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}
.card{border:1px solid var(--line);border-radius:14px;padding:14px;display:flex;flex-direction:column;gap:8px}
.card .hd{display:flex;align-items:center;gap:10px}
.tile{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;color:#fff;font-weight:700;flex:none}
.card b{font-size:14.5px}
.card p{margin:0;font-size:13px;color:var(--ink-3);flex:1}
.status{font-size:12px;font-weight:600;border-radius:999px;padding:2px 9px;white-space:nowrap}
.status.off{background:var(--soft);color:var(--ink-3)}
.status.pending{background:var(--amber-soft);color:var(--amber)}
.status.on{background:var(--ok-soft);color:var(--ok)}
.radio{display:flex;gap:10px;align-items:flex-start;border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin:0 0 8px;cursor:pointer}
.radio:has(input:checked){border-color:var(--blue);background:var(--blue-soft)}
.radio input{margin-top:3px;accent-color:var(--blue)}
.radio b{display:block;font-size:14.5px}.radio span{font-size:13px;color:var(--ink-2)}
.people{list-style:none;margin:0;padding:0}
.people li{display:flex;align-items:center;gap:10px;padding:8px 0;border-bottom:1px solid var(--line)}
.people li .n{flex:1;min-width:0;font-size:14px}
.people .avatar{width:28px;height:28px;font-size:12px}
.results{border:1px solid var(--line);border-radius:12px;margin:-8px 0 14px;max-height:220px;overflow:auto}
.results button{display:flex;width:100%;align-items:center;gap:10px;border:0;background:none;padding:8px 12px;text-align:left}
.results button:hover{background:var(--soft)}
.checks{display:grid;grid-template-columns:1fr 1fr;gap:6px 16px}
.checks label{display:flex;align-items:center;gap:8px;font-size:14px}
.checks input{accent-color:var(--blue);width:16px;height:16px}
.toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--bg);border-radius:10px;padding:9px 16px;font-size:14px;z-index:60;box-shadow:var(--shadow-lg)}

/* gate */
.gate{max-width:440px;margin:0 auto;text-align:center;padding:14vh 20px}
.gate h1{font:400 30px/1.2 var(--serif);margin:14px 0 8px}
.gate p{color:var(--ink-2);margin:0 0 20px}

/* ---------- responsive ---------- */
.scrim{display:none}
@media (max-width:1100px){
  .main.with-panel{grid-template-columns:minmax(0,1fr)}
  .panel{position:fixed;top:0;right:0;bottom:0;width:min(440px,100%);z-index:40;box-shadow:var(--shadow-lg);padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
  .panel:has(.research-workspace){width:min(920px,100%)}
  .scrim.on{display:block;position:fixed;inset:0;background:rgba(10,16,24,.35);z-index:35}
}
@media (max-width:780px){
  .app,.app.collapsed{grid-template-columns:minmax(0,1fr)}
  .side{position:fixed;top:0;left:0;bottom:0;width:min(290px,86%);z-index:45;transform:translateX(-102%);transition:transform .2s;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
  .app.drawer .side{transform:none;box-shadow:var(--shadow-lg)}
  .app.collapsed .logo span,.app.collapsed .nav button span,.app.collapsed .recents,.app.collapsed .me div,.app.collapsed .switch span{display:revert}
  .bar .menu{display:grid}
  .s-top .collapse{display:none}
  .col{padding:0 14px}.dock{padding:0 12px}
  .research-workspace{grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(170px,35%) minmax(0,1fr);border:0}
  .research-results{border-right:0;border-bottom:1px solid var(--line)}
  .research-result-list{max-height:none}
  .research-saved{max-height:35%}
  .dashboard-charts{grid-template-columns:minmax(0,1fr)}
  .md{font-size:16.5px}
  .dialog{grid-template-columns:minmax(0,1fr);grid-template-rows:auto minmax(0,1fr);height:100%;border-radius:14px}
  .modal{padding:10px;padding-top:calc(10px + env(safe-area-inset-top,0px));padding-bottom:calc(10px + env(safe-area-inset-bottom,0px))}
  .tabs{flex-direction:row;overflow-x:auto;border-right:0;border-bottom:1px solid var(--line);padding:10px}
  .tabs h2{display:none}
  .tabs button{white-space:nowrap}
  .grid2,.checks{grid-template-columns:minmax(0,1fr)}
  .table .hide-m{display:none}
}

/* ================= v3 additions ================= */
.brand-img{height:30px;width:auto;display:block}
.app.collapsed .brand-img{display:none}
.app.collapsed .brand-icon{display:block}
.brand-icon{display:none;width:30px;height:30px}
.hero-mark img{width:56px;height:56px}
.steps{display:flex;flex-direction:column;gap:4px;margin:0 0 10px}
.stepline{display:flex;align-items:center;gap:8px;font:13px var(--sans);color:var(--ink-3)}
.stepline .ico{width:15px;height:15px}
.stepline.live{color:var(--blue-2)}
.stepline.live .ico{animation:spin 1.6s linear infinite}
.filecard{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:14px;padding:10px 14px;margin:12px 0 0;max-width:420px;background:var(--bg);text-decoration:none;color:var(--ink)}
.filecard:hover{border-color:var(--blue)}
.filecard .ext{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;font:700 11px var(--sans);color:var(--on-accent);background:var(--blue);text-transform:uppercase;flex:none}
.filecard b{display:block;font:600 14px var(--sans)}.filecard small{color:var(--ink-3);font:12.5px var(--sans)}
.src .kind{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.02em;color:var(--ink-3)}
.srcpop{position:fixed;z-index:70;max-width:340px;background:var(--bg);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-lg);padding:12px 14px;font:13.5px/1.45 var(--sans)}
.srcpop b{display:block;margin-bottom:4px}.srcpop a{color:var(--blue);word-break:break-all}
.web-search.on{background:var(--blue-soft);color:var(--blue-2)}
.main.research-open.with-panel{grid-template-columns:minmax(0,1fr) min(900px,70%)}
.p-body:has(.research-workspace){display:flex;min-height:0;overflow:hidden;padding:0}
.research-workspace{height:100%;min-height:0;display:grid;grid-template-columns:minmax(180px,.8fr) minmax(0,1.5fr);border:1px solid var(--line);border-radius:8px;overflow:hidden}
.research-results,.research-reader{min-width:0;min-height:0;display:flex;flex-direction:column}
.research-results{border-right:1px solid var(--line);background:var(--side)}
.research-results-head,.research-reader-head{display:flex;align-items:center;gap:8px;justify-content:space-between;padding:10px 12px;border-bottom:1px solid var(--line);min-height:50px}
.research-results-head b,.research-reader-head b{font-size:13.5px}
.research-status,.research-reader-head small{display:block;color:var(--ink-3);font-size:11.5px}
.research-result-list{flex:1;overflow:auto;min-height:100px;max-height:52%;padding:4px}
.research-result{display:flex;width:100%;flex-direction:column;gap:4px;padding:9px;border:0;border-bottom:1px solid var(--line);background:none;text-align:left}
.research-result:hover,.research-result.selected{background:var(--soft)}
.research-result b{font-size:12.5px;line-height:1.35}
.research-result small{font-size:11px;color:var(--ink-3)}
.research-result span{font-size:11.5px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.research-projects{max-height:42%;overflow:auto;border-top:1px solid var(--line);padding:9px;display:grid;gap:6px}
.research-projects>b,.research-verify>b{font-size:12px}
.research-project-controls{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:5px}
.research-project-controls .research-project-title{grid-column:1/-1}
.research-project-source-list{display:grid;gap:3px}
.research-project-source-list button{border:0;background:none;color:var(--ink-2);text-align:left;font-size:11.5px;padding:5px;overflow-wrap:anywhere}
.research-project-source-list button:hover,.research-comparison-output button:hover{background:var(--soft-2)}
.research-comparison-output{font-size:11.5px;color:var(--ink-2)}
.research-comparison-output section{margin-top:7px}
.research-comparison-output section>b{font-size:11.5px;color:var(--ink)}
.research-comparison-output p{margin:5px 0;line-height:1.45}
.research-comparison-output button{border:0;border-radius:3px;background:var(--blue-soft);color:var(--blue);font-size:10px;padding:2px 4px}
.research-saved{min-height:0;overflow:auto;border-top:1px solid var(--line);padding:10px}
.research-saved>b{font-size:12px}
.research-saved-list{display:grid;gap:3px;margin-top:6px}
.research-saved-list button{border:0;background:none;color:var(--ink-2);text-align:left;font-size:12px;padding:6px;border-radius:5px;overflow-wrap:anywhere}
.research-saved-list button:hover{background:var(--soft-2)}
.research-page-title{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
.research-reader-head>div{min-width:0}
.research-external{display:grid;place-items:center;text-decoration:none;flex:none}
.research-page-text{flex:1;min-height:100px;overflow:auto;padding:16px 18px;white-space:pre-wrap;overflow-wrap:anywhere;font-size:13px;line-height:1.65;color:var(--ink-2)}
.research-page-links{display:grid;gap:3px;margin-top:18px;padding-top:12px;border-top:1px solid var(--line)}
.research-page-links b{font-size:12px;color:var(--ink-3);margin-bottom:3px}
.research-page-links button{border:0;background:none;color:var(--blue);text-align:left;font-size:12px;padding:5px 0;overflow-wrap:anywhere}
.research-page-links button:hover{text-decoration:underline}
.research-readable-text{user-select:text}
.research-readable-text mark{background:color-mix(in srgb,var(--amber-soft) 80%,var(--mark));color:var(--ink);border-radius:2px}
.research-annotation{border-top:1px solid var(--line);padding:10px;display:grid;gap:7px}
.research-annotation textarea{width:100%;min-height:60px;max-height:130px;resize:vertical;border:1px solid var(--line);border-radius:6px;background:var(--bg);padding:8px;font-size:12.5px}
.research-annotation .research-save{justify-self:end;display:flex;align-items:center;gap:5px}
.research-annotation .research-save .ico{width:16px;height:16px}
.research-verify{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:6px;border-top:1px solid var(--line);padding-top:7px}
.research-verify>b,.research-verify-result{grid-column:1/-1}
.research-verify-result{margin:0}
.research-highlights{display:grid;gap:4px;max-height:100px;overflow:auto}
.research-quote{display:flex;align-items:flex-start;gap:6px;color:var(--ink-2);font-size:11.5px;background:var(--amber-soft);border-radius:4px;padding:5px 7px}
.research-quote span{flex:1;min-width:0;max-height:40px;overflow:auto}
.research-quote .ibtn{width:20px;height:20px}
@media (max-width:780px){
  .research-workspace{grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(140px,38%) minmax(0,1fr);border:0}
  .research-results{border-right:0;border-bottom:1px solid var(--line)}
  .research-result-list{max-height:none}
  .research-saved{max-height:35%}
  .research-projects{max-height:45%}
}
.toolbar{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:0 0 12px}
.toolbar .search{margin:0;flex:1;min-width:180px}
.toolbar select{border:1px solid var(--line);background:var(--bg);border-radius:10px;padding:8px 10px}
.badge-s{display:inline-block;border-radius:999px;padding:1px 8px;font-size:12px;font-weight:600}
.b-ok{background:var(--ok-soft);color:var(--ok)}.b-warn{background:var(--amber-soft);color:var(--amber)}.b-bad{background:var(--red-soft);color:var(--red-2)}.b-info{background:var(--blue-soft);color:var(--blue-2)}.b-mute{background:var(--soft);color:var(--ink-3)}
.pager{display:flex;gap:8px;align-items:center;justify-content:flex-end;margin-top:10px;font-size:13px;color:var(--ink-3)}
.sheet{position:fixed;inset:0;z-index:60;display:grid;place-items:center;background:var(--scrim);padding:20px}
.sheet .card2{width:min(620px,100%);max-height:100%;overflow:auto;background:var(--bg);border-radius:16px;box-shadow:var(--shadow-lg);padding:20px 22px}
.sheet h3{margin:0 0 14px;font-size:18px}
.pickers{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 14px}
.pick{border:1px solid var(--line);background:var(--bg);border-radius:999px;padding:4px 10px;font-size:13px;display:inline-flex;align-items:center;gap:6px}
.pick[aria-pressed="true"]{background:var(--blue-soft);border-color:var(--blue);color:var(--ink)}
.stat{border:1px solid var(--line);border-radius:14px;padding:14px}
.stat b{display:block;font:700 26px/1.1 var(--sans)}.stat span{font-size:13px;color:var(--ink-3)}
.stats{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;margin-bottom:16px}
.bars{display:flex;align-items:flex-end;gap:3px;height:110px;border-bottom:1px solid var(--line);padding-top:6px}
.bars div{flex:1;background:var(--blue);border-radius:3px 3px 0 0;min-height:2px}
.kv{display:grid;grid-template-columns:160px 1fr;gap:6px 12px;font-size:14px}
.kv dt{color:var(--ink-3)}
.login{min-height:100%;display:grid;place-items:center;padding:24px;background:radial-gradient(1200px 600px at 10% -10%,var(--blue-soft),transparent),radial-gradient(900px 500px at 110% 110%,var(--red-soft),transparent)}
.login .box2{width:min(420px,100%);background:var(--bg);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:34px 30px;text-align:center}
.login img{height:64px;margin:0 auto 18px;display:block}
.login h1{font:400 26px/1.2 var(--serif);margin:0 0 8px}
.login p{color:var(--ink-2);margin:0 0 22px}
.msbtn{width:100%;display:flex;align-items:center;justify-content:center;gap:10px;border:1px solid var(--line);background:var(--bg);border-radius:12px;padding:12px;font-weight:600;font-size:15px;color:var(--ink);text-decoration:none}
.msbtn:hover{border-color:var(--blue);background:var(--soft)}
.login .alert{background:var(--red-soft);color:var(--ink);border-radius:10px;padding:10px 12px;font-size:14px;margin:0 0 16px;text-align:left}
.login .fine{font-size:12.5px;color:var(--ink-3);margin-top:18px}

/* ================= v4: theme, spaces, consoles ================= */
/* logo variants per theme */
.only-dark{display:none!important}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .only-dark{display:block!important}:root:not([data-theme="light"]) .only-light{display:none!important}}
:root[data-theme="dark"] .only-dark{display:block!important}
:root[data-theme="dark"] .only-light{display:none!important}
.app.collapsed .brand-img.only-dark,.app.collapsed .brand-img.only-light{display:none!important}

/* theme switch (segmented: light / dark / system) */
.theme-sw{display:inline-flex;align-items:center;gap:2px;border:1px solid var(--line);background:var(--bg);border-radius:10px;padding:2px}
.theme-sw button{width:30px;height:28px;border:0;background:none;border-radius:8px;display:grid;place-items:center;color:var(--ink-3)}
.theme-sw button:hover{color:var(--ink);background:var(--soft)}
.theme-sw button[aria-pressed="true"]{background:var(--soft-2);color:var(--ink)}
.theme-sw .ico{width:16px;height:16px}
.s-foot .foot-row{display:flex;align-items:center;gap:8px;margin-top:8px}
.s-foot .foot-row .switch{margin:0;flex:1;min-width:0}
.app.collapsed .theme-sw{flex-direction:column}
.app.collapsed .s-foot .foot-row{flex-direction:column}
.login-top{position:fixed;top:calc(14px + env(safe-area-inset-top,0px));right:16px;z-index:5}

/* Semantic icon colors: distinct hues make navigation and actions scannable. */
.ico-home,.ico-building{color:#D36B1F}.ico-chat,.ico-spark,.ico-bot,.ico-bulb{color:#8C63C7}
.ico-lib,.ico-book,.ico-drive{color:#27864A}.ico-cal,.ico-clock{color:#087E8B}.ico-task,.ico-check{color:#C34C77}
.ico-user,.ico-users,.ico-team{color:#2871B8}.ico-shield,.ico-lock,.ico-key,.ico-unlock{color:#C05252}
.ico-chart,.ico-search,.ico-globe,.ico-db{color:#168A91}.ico-plug,.ico-code{color:#5475C8}.ico-gear,.ico-sliders{color:#647386}
.ico-file,.ico-doc2,.ico-copy{color:#3876BA}.ico-mail,.ico-mega{color:#C56832}.ico-up,.ico-plus{color:#168A69}
.ico-trash,.ico-x{color:#C44D57}.ico-eye,.ico-sun{color:#C18A18}.ico-moon,.ico-monitor{color:#5D71B8}
.ico-edit,.ico-pen,.ico-save{color:#C27A28}.ico-retry,.ico-swap,.ico-share{color:#168A91}.ico-out{color:#C05252}
.ico-math{color:#8C63C7}.ico-calculator{color:#2871B8}.ico-down{color:var(--ink-2)}.ico-brain{color:#6657ad}
.ico-left,.ico-right{color:var(--ink-2)}

/* space badge in the sidebar */
.space{display:inline-flex;align-items:center;gap:6px;font-size:11.5px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;border-radius:999px;padding:3px 9px;margin:0 12px 6px;align-self:flex-start}
.space.admin{background:var(--red-soft);color:var(--red-2)}
.space.dev{background:var(--amber-soft);color:var(--amber)}
.space .ico{width:13px;height:13px}
.app.collapsed .space{display:none}
.nav .sec{font-size:11.5px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-3);margin:12px 10px 4px}
.nav button[aria-current="page"]{background:var(--bg);color:var(--ink);font-weight:600;box-shadow:var(--shadow)}
.app.collapsed .nav .sec{display:none}

/* console pages (admin & developer) */
.page{display:flex;flex-direction:column;min-height:0;min-width:0;animation:fade-up .35s ease both}
.page-head{display:flex;align-items:center;gap:10px;padding:14px 24px 10px;min-height:60px;border-bottom:1px solid var(--line)}
.page-head h1{margin:0;font-size:20px;font-weight:700;flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;letter-spacing:-.01em}
.page-head .menu{display:none}
.page-body{flex:1;overflow:auto;padding:18px 24px 40px}
.page-body > .wrap{max-width:1100px}
.grid-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px;margin:0 0 18px}
.dashboard-charts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:0 0 18px}
.chartbox{min-width:0;overflow:hidden}
.chart-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:8px}.chart-head h3{margin:0 0 2px}.chart-head strong{font-size:22px;color:var(--ink)}.chart-caption{font-size:12.5px;color:var(--ink-3)}
.chartbox canvas{display:block;width:100%;height:240px}.chart-legend{display:flex;flex-wrap:wrap;gap:7px 12px;margin-top:4px;color:var(--ink-3);font-size:11.5px}.chart-legend span{display:inline-flex;align-items:center;gap:5px}.chart-legend i{width:8px;height:8px;border-radius:50%;display:inline-block}.chart-legend b{color:var(--ink)}
.panelbox{border:1px solid var(--line);border-radius:14px;padding:16px 18px;background:var(--bg)}
.panelbox h3{margin:0 0 10px;font-size:15px;font-weight:700;display:flex;align-items:center;gap:8px}
.panelbox h3 .ico{width:19px;height:19px}
.list-clean{list-style:none;margin:0;padding:0}
.list-clean li{display:flex;align-items:center;gap:10px;padding:8px 0;border-bottom:1px solid var(--line);font-size:14px}
.list-clean li:last-child{border-bottom:0}
.list-clean .grow{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.stat.warn b{color:var(--amber)}.stat.bad b{color:var(--red)}.stat.good b{color:var(--ok)}
.stat small{display:block;color:var(--ink-3);font-size:12px;margin-top:2px}
.quick{display:flex;flex-wrap:wrap;gap:8px}
.table tbody tr:hover{background:var(--side)}
.empty{text-align:center;color:var(--ink-3);padding:26px 10px;font-size:14px}
.kbd{font:600 12.5px ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--soft);border:1px solid var(--line);border-radius:6px;padding:1px 6px}
.note{border-radius:12px;padding:10px 14px;font-size:14px;margin:0 0 14px;background:var(--blue-soft);color:var(--ink)}
.note.warn{background:var(--amber-soft)}
.note.bad{background:var(--red-soft)}

/* one-time credentials card */
.creds{border:1px dashed var(--blue);background:var(--blue-soft);border-radius:14px;padding:14px 16px;margin:0 0 14px}
.creds dl{display:grid;grid-template-columns:110px minmax(0,1fr);gap:8px 12px;margin:0;font-size:14px;align-items:center}
.creds dt{color:var(--ink-2)}
.creds dd{margin:0;font:600 14.5px ui-monospace,SFMono-Regular,Menlo,monospace;overflow-wrap:anywhere}
.creds .warnline{font-size:13px;color:var(--ink-2);margin:10px 0 0}

/* password fields */
.pw{position:relative}
.pw .in{padding-right:44px}
.pw .eye{position:absolute;right:6px;top:5px;width:32px;height:30px}
.pw-rules{list-style:none;margin:-6px 0 14px;padding:0;font-size:13px;color:var(--ink-3)}
.pw-rules li{display:flex;align-items:center;gap:6px;margin:3px 0}
.pw-rules li.ok{color:var(--ok)}
.pw-rules .ico{width:14px;height:14px}

/* login pages */
.login form{text-align:left}
.login .in{margin-bottom:12px}
.login .btn.block{width:100%;padding:11px 14px;font-size:15px}
.login .sub-link{display:block;margin-top:16px;font-size:13.5px;color:var(--ink-2)}
.login .kicker{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;border-radius:999px;padding:4px 10px;margin:0 0 10px}
.login .kicker.admin{background:var(--red-soft);color:var(--red-2)}
.login .kicker.dev{background:var(--amber-soft);color:var(--amber)}
.login .kicker .ico{width:13px;height:13px}
.login label.f{text-align:left}
.gate-card{width:min(460px,100%);margin:10vh auto;background:var(--bg);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:30px}
.gate-card h1{font:400 26px/1.2 var(--serif);margin:0 0 8px}
.gate-card p{color:var(--ink-2);margin:0 0 18px}

@media (max-width:780px){
  .page-head .menu{display:grid}
  .page-head{padding:10px 14px}
  .page-body{padding:14px 14px 30px}
  .creds dl{grid-template-columns:minmax(0,1fr)}
}

/* Calendar and learning tools */
.calendar-wrap{max-width:900px;margin:0 auto}.calendar-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:0 0 14px}
.calendar-week{margin:0 0 18px;padding:0 0 13px;border-bottom:1px solid var(--line)}.calendar-week-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:5px}.calendar-week-head h3{margin:0;font-size:15px}.calendar-week-item{display:grid;grid-template-columns:102px minmax(0,1fr);gap:10px;padding:8px 0;border-top:1px solid var(--line)}.calendar-week-item time{color:var(--ink-3);font-size:12px}.calendar-week-item div{min-width:0}.calendar-week-item b,.calendar-week-item small{display:block;overflow-wrap:anywhere}.calendar-week-item b{font-size:13px;font-weight:600}.calendar-week-item small{margin-top:2px;color:var(--ink-3);font-size:11px;text-transform:capitalize}
.offline-notice{margin:12px 0;padding:10px 12px;border-left:3px solid #b47d16;background:var(--soft);color:var(--ink-2);font-size:13px}
.calendar-toolbar h2{font-size:20px;line-height:1.2;margin:3px 0 0;text-transform:capitalize}.calendar-nav{display:flex;align-items:center;gap:4px}
.calendar-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:4px}.calendar-weekday{text-align:center;padding:5px 0;color:var(--ink-3);font-size:12px;font-weight:600}
.calendar-day,.calendar-empty{aspect-ratio:1;min-height:36px}.calendar-day{position:relative;display:flex;justify-content:center;align-items:flex-start;padding:7px 4px;border:1px solid transparent;border-radius:9px;background:transparent;font-size:13px}
.calendar-day:hover{background:var(--soft)}.calendar-day.today{border-color:var(--blue)}.calendar-day.selected{background:var(--blue-soft);color:var(--blue-2);font-weight:700}
.calendar-day i{position:absolute;bottom:5px;width:6px;height:6px;border-radius:50%;background:#C34C77;font-size:0}.calendar-agenda{margin-top:16px;border-top:1px solid var(--line);padding-top:14px}
.calendar-agenda-head{display:flex;align-items:center;justify-content:space-between;gap:8px}.calendar-agenda h3{margin:0;font-size:15px;text-transform:capitalize}.calendar-empty-note{font-size:13px;color:var(--ink-3);padding:8px 0;margin:0}
.calendar-anytime{margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}.calendar-anytime h3{font-size:13px;color:var(--ink-2);margin:0 0 4px}
.calendar-event{display:flex;align-items:center;gap:8px;padding:7px 0;border-bottom:1px solid var(--line)}.calendar-event input{accent-color:var(--ok)}.calendar-event.blocked input{cursor:not-allowed}
.calendar-event-main{flex:1;min-width:0;display:grid;gap:2px}.calendar-event-text{min-width:0;overflow-wrap:anywhere}.calendar-event-prereqs{color:var(--ink-3);font-size:11px;overflow-wrap:anywhere}.calendar-event.done .calendar-event-text{text-decoration:line-through;color:var(--ink-3)}.calendar-event .ibtn{width:30px;height:30px}
.calendar-form{display:grid;grid-template-columns:minmax(0,1fr) 132px auto;gap:7px;margin-top:12px}.calendar-form .in{min-width:0;margin:0;padding:8px}.calendar-form .btn{white-space:nowrap}.calendar-form .calendar-dependencies-label,.calendar-form .calendar-dependencies{grid-column:1/-1}.calendar-form .calendar-dependencies{min-height:74px}
.study-tools{max-width:none;margin:0}.tool-section{padding:4px 0 18px;border-bottom:1px solid var(--line);margin-bottom:16px}.tool-section:last-child{border:0}
.tool-title{display:flex;align-items:center;gap:10px;margin-bottom:12px}.tool-title h3{font-size:15px;margin:0}.tool-title p{margin:2px 0 0}.tool-icon{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;background:var(--blue-soft)}
.tool-icon .ico{color:#2871B8}.tool-icon.timer{background:#E4F3F0}.tool-icon.timer .ico{color:#168A69}.tool-icon.cards{background:#F8EAF0}.tool-icon.cards .ico{color:#C34C77}
.focus-clock{font-size:44px;font-variant-numeric:tabular-nums;font-weight:600;line-height:1.2;text-align:center;padding:14px}.focus-controls{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:8px}
.focus-settings{max-width:600px}.focus-settings .focus-controls{justify-content:flex-start;flex-wrap:wrap}.focus-volume{display:block;width:100%;max-width:440px;accent-color:var(--ok)}.focus-settings output{margin-left:6px;color:var(--ink-2)}.focus-preview{width:min(100%,420px);margin:18px 0;padding:14px;border:1px solid var(--line);border-radius:8px;background:var(--side)}.focus-preview .focus-clock{padding:10px;font-size:52px}.focus-preview .focus-controls{margin-top:0}.focus-widget-show{display:inline-flex;align-items:center;gap:8px;margin-top:14px;padding:7px 0;border:0;background:none;color:var(--blue);font-weight:600}.focus-float{position:fixed;right:22px;bottom:22px;z-index:55;width:min(250px,calc(100vw - 24px));padding:11px 14px 12px;border:1px solid var(--line);border-radius:12px;background:var(--bg);box-shadow:var(--shadow-lg);touch-action:none}.focus-float[hidden]{display:none}.focus-float-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:5px;cursor:grab;touch-action:none;user-select:none}.focus-float-head:active{cursor:grabbing}.focus-float-head>span{display:flex;align-items:center;gap:6px;color:var(--ink-2);font-size:12px;font-weight:600}.focus-float-head .ico{width:16px;height:16px}.focus-float-head .ibtn{width:28px;height:28px}.focus-float .focus-clock{display:block;padding:2px 0 6px;font-size:36px}.focus-float-actions{display:flex;justify-content:center;gap:8px}.focus-float-actions .ibtn{border:1px solid var(--line)}
.flashcard{min-height:110px;border:1px solid var(--line);border-radius:10px;padding:14px;margin-top:16px;background:var(--side)}.flashcard p{margin:6px 0 0;white-space:pre-wrap;overflow-wrap:anywhere}
.study-tools textarea.in{min-height:74px}
.diagram-canvas{min-height:170px;margin-top:12px;padding:10px;border:1px solid var(--line);border-radius:8px;background:var(--side);overflow:auto;display:grid;place-items:center}.diagram-canvas svg{max-width:100%;height:auto}.focus-mini .tool-title{margin:0}.focus-mini .focus-clock{font-size:20px;padding:0 6px}
.code-ide{position:absolute;inset:0;z-index:30;display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--bg)}
.ide-toolbar{min-height:50px;flex:none;display:flex;align-items:center;gap:7px;padding:0 12px;border-bottom:1px solid var(--line);background:var(--side);overflow-x:auto}.ide-toolbar b{font-size:13px;white-space:nowrap}.ide-toolbar .small{margin-left:4px;white-space:nowrap}.ide-toolbar select,.ide-files-head select{max-width:175px;border:1px solid var(--line);background:var(--bg);border-radius:7px;padding:6px 8px;font-size:12px}.ide-toolbar .btn{white-space:nowrap}.ide-divider{height:22px;border-left:1px solid var(--line);flex:none}
.ide-body{flex:1;min-height:0;display:grid;grid-template-columns:230px minmax(0,1fr)}.ide-files{min-height:0;overflow:auto;border-right:1px solid var(--line);background:var(--side)}.ide-files-head{min-height:42px;display:flex;align-items:center;justify-content:space-between;gap:6px;padding:6px 9px;border-bottom:1px solid var(--line)}.ide-files-head b{font-size:11px;text-transform:uppercase;color:var(--ink-3)}.ide-files-head select{width:112px;font-size:10px;padding:4px}.ide-tree{padding:5px 4px}.ide-tree-group{min-width:0}.ide-tree-row{width:100%;display:flex;align-items:center;gap:6px;min-height:29px;padding:4px 6px;border:0;border-radius:5px;background:none;color:var(--ink-2);text-align:left;font-size:12px}.ide-tree-row:hover{background:var(--soft-2)}.ide-tree-row.active{background:var(--blue-soft);color:var(--ink);font-weight:600}.ide-tree-row span:last-child{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ide-tree-row .ico{width:14px;height:14px}.ide-tree-row .ide-tree-kind{width:13px;text-align:center;color:var(--ink-3);font-size:10px}.ide-tree-children{margin-left:9px;padding-left:6px;border-left:1px solid var(--line)}.ide-tree-empty{padding:8px 12px;color:var(--ink-3);font-size:11px}.ide-editor-area{min-width:0;min-height:0;display:grid;grid-template-rows:34px minmax(180px,1fr) 190px}.ide-tabs{min-width:0;display:flex;overflow-x:auto;border-bottom:1px solid var(--line);background:var(--side)}.ide-tab{display:flex;flex:none;align-items:center;gap:8px;max-width:220px;padding:0 8px 0 12px;border:0;border-right:1px solid var(--line);background:transparent;color:var(--ink-2);font-size:11px}.ide-tab[aria-selected="true"]{background:var(--bg);color:var(--ink)}.ide-tab span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ide-tab button{width:22px;height:22px;border:0;border-radius:4px;background:transparent;color:var(--ink-3)}.ide-tab button:hover{background:var(--soft-2);color:var(--ink)}.ide-editor{min-width:0;min-height:0}.ide-editor iframe{width:100%;height:100%;border:0;background:#fff}.ide-bottom{min-height:0;display:flex;flex-direction:column;border-top:1px solid var(--line);background:var(--side)}.ide-bottom.collapsed{height:34px}.ide-bottom.collapsed #ideOutput{display:none}.ide-bottom-head{height:34px;flex:none;display:flex;align-items:center;gap:5px;padding:0 9px}.ide-bottom-head b{flex:1;font-size:11px;text-transform:uppercase;color:var(--ink-3)}.ide-bottom-head .ibtn{width:27px;height:27px}.ide-bottom pre{min-height:0;flex:1;overflow:auto;margin:0;padding:8px 11px;border-top:1px solid var(--line);background:var(--bg);white-space:pre-wrap;overflow-wrap:anywhere;font:12px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--ink-2)}.ide-html-preview{width:100%;height:100%;border:0;background:white}.app.ide-active .main{overflow:hidden}
@media(max-width:780px){.ide-toolbar{height:auto;min-height:50px;padding:6px;gap:4px;flex-wrap:wrap}.ide-toolbar .btn{font-size:11px;padding:5px 7px}.ide-toolbar b{display:none}.ide-toolbar .small{display:none}.ide-toolbar select{max-width:115px}.ide-body{grid-template-columns:120px minmax(0,1fr)}.ide-editor-area{grid-template-rows:30px minmax(180px,1fr) 160px}.ide-files-head{flex-direction:column;align-items:stretch}.ide-files-head select{width:100%;max-width:none}}
.notification-bell{position:relative;margin-left:auto}.notification-bell #notificationIcon,.notification-bell .admin-notification-icon{display:grid;place-items:center}.notification-bell #notificationIcon .ico,.notification-bell .admin-notification-icon .ico{color:#C18A18}.admin-notification-bell{flex:none;margin-left:8px}
.notification-bell i{position:absolute;right:0;top:0;min-width:16px;height:16px;padding:0 3px;border-radius:9px;background:#C44D57;color:#fff;font:700 10px/16px var(--sans);font-style:normal;text-align:center}
.admin-notification-actions{display:flex;justify-content:flex-end;margin-bottom:10px}.admin-notification-open{flex:1;min-width:0;border:0;background:none;color:inherit;text-align:left;padding:0}.admin-notification-open b{display:block;font-size:13px}.admin-notification-open p{margin:3px 0;color:var(--ink-2);font-size:12px;overflow-wrap:anywhere}.admin-notification-open small{color:var(--ink-3);font-size:10.5px}.notification-item.unread .admin-notification-open b{color:var(--ink)}
.library-tabs{display:flex;gap:3px;overflow-x:auto;border-bottom:1px solid var(--line);margin:-3px 0 14px;scrollbar-width:thin}.library-tabs button{flex:none;border:0;border-bottom:2px solid transparent;background:none;padding:9px 8px;color:var(--ink-2);font-size:12px;font-weight:600}.library-tabs button[aria-selected="true"]{border-color:#17815e;color:#166b50}
.drive-connect{text-align:center;padding:24px 10px}.drive-connect .tile{margin:0 auto 10px}.drive-connect h3{font-size:16px;margin:0 0 6px}.drive-connect p{margin:0 auto 15px;max-width:300px}
.drive-file{display:flex;width:100%;align-items:center;gap:10px;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;padding:10px 4px}.drive-file:hover{background:var(--side)}.drive-file-icon{width:34px;height:34px;display:grid;place-items:center;border-radius:8px;background:#e7f3eb}.drive-file-icon .ico{color:#27864a}.drive-file-info{flex:1;min-width:0}.drive-file-info b,.drive-file-info small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.drive-file-info b{font-size:13px}.drive-file-info small{font-size:10.5px;color:var(--ink-3);margin-top:3px}.drive-file>.ico{width:16px;height:16px;color:var(--ink-3)}
.school-attach-file{animation:library-item-in .24s ease both}.school-attach-file:nth-child(3n){animation-delay:.04s}.school-attach-file:nth-child(4n){animation-delay:.08s}.school-icon{background:var(--blue-soft)!important}.school-icon .ico{color:var(--blue)!important}.school-attach-file:disabled{opacity:.65;cursor:wait}.school-attach-file:disabled .school-icon{animation:library-pulse 1s ease-in-out infinite}
@keyframes library-item-in{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:none}}@keyframes library-pulse{50%{transform:scale(.9);opacity:.5}}
.notification-push{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 0;margin-bottom:12px;border-bottom:1px solid var(--line)}.notification-push h3{margin:0 0 3px;font-size:14px}.notification-push p{margin:0}.notification-push button{flex:none}.notification-actions{display:flex;justify-content:flex-end;gap:7px;margin-bottom:10px}.notification-item{display:grid;grid-template-columns:30px minmax(0,1fr) 30px;align-items:start;gap:8px;padding:12px 0;border-bottom:1px solid var(--line);cursor:pointer}.notification-item.unread .notification-copy b{color:var(--ink)}.notification-item.read .notification-copy{opacity:.72}.notification-mark{width:28px;height:28px;border-radius:8px;background:#fff2dc;display:grid;place-items:center}.notification-mark .ico{width:16px;height:16px;color:#b47d16}.notification-copy{min-width:0}.notification-copy b{display:block;font-size:13px}.notification-copy p{font-size:12px;color:var(--ink-2);margin:3px 0;overflow-wrap:anywhere}.notification-copy small{font-size:10.5px;color:var(--ink-3)}.notification-item>[data-open]{width:28px;height:28px}.notification-pagination{display:flex;align-items:center;justify-content:center;gap:10px;margin-top:14px}
.service-request-item{padding:12px 0;border-bottom:1px solid var(--line)}.service-request-copy{min-width:0}.service-request-head,.memory-head{display:flex;align-items:center;gap:8px;min-width:0}.service-request-head b,.memory-head b{min-width:0;overflow-wrap:anywhere;font-size:13px}.service-request-head .badge-s{margin-left:auto;flex:none;text-transform:capitalize}.service-request-detail,.service-request-note{margin:6px 0 0;color:var(--ink-2);font-size:13px;white-space:pre-wrap;overflow-wrap:anywhere}.service-request-note{padding:7px 9px;border-left:2px solid var(--blue);background:var(--soft);border-radius:0 6px 6px 0}.service-request-copy small,.memory-copy small{display:block;margin-top:6px;color:var(--ink-3);font-size:11px}.service-request-documents{margin-top:10px}.service-request-documents h4{margin:0 0 6px;font-size:12px}.service-request-documents .row{align-items:center;gap:8px;margin:6px 0}.service-request-documents input[type=file]{max-width:240px;font-size:11px}.service-request-attachments a{display:inline-block;margin:7px 8px 0 0;font-size:12px}.service-request-timeline{margin:10px 0 0;padding-left:20px;color:var(--ink-3);font-size:11px}.service-request-timeline li{margin:4px 0}
.memory-item{display:grid;grid-template-columns:minmax(0,1fr) 34px;align-items:start;gap:10px;padding:13px 0;border-bottom:1px solid var(--line)}.memory-copy{min-width:0}.memory-head .badge-s{flex:none;text-transform:capitalize}.memory-head b{font-size:14px}.memory-fact{display:grid;grid-template-columns:minmax(90px,auto) minmax(0,1fr);gap:8px;margin:8px 0 0;color:var(--ink-2);font-size:13px}.memory-fact span{text-transform:capitalize;color:var(--ink-3)}.memory-fact strong{font-weight:500;color:var(--ink);overflow-wrap:anywhere;white-space:pre-wrap}
.memory-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:7px;color:var(--ink-3);font-size:10.5px;text-transform:capitalize}.memory-confidence{color:var(--ok)}.memory-source{padding-left:8px;border-left:1px solid var(--line)}
.main.study-tools-open.with-panel{grid-template-columns:minmax(0,1fr) min(920px,74%)}
.main.study-tools-open.with-panel.study-tools-wide{grid-template-columns:minmax(0,1fr) min(1180px,88%)}
.panel.study-tools-floating{position:fixed;inset:auto;right:auto;bottom:auto;z-index:70;width:min(1000px,calc(100vw - 32px));height:min(760px,calc(100vh - 32px));min-width:min(520px,calc(100vw - 16px));min-height:340px;max-width:calc(100vw - 16px);max-height:calc(100vh - 16px);overflow:hidden;border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow-lg)}
.panel.study-tools-floating-large{width:min(1200px,calc(100vw - 32px));height:min(880px,calc(100vh - 32px))}
.study-tools-floating .p-head{cursor:move;touch-action:none;user-select:none}
.study-tools-floating .p-head button{touch-action:auto}
.study-window-controls{display:flex;align-items:center;gap:4px}
.study-window-controls .ibtn{width:30px;height:30px}
.study-window-resize{display:none}
.study-tools-floating .study-window-resize{position:absolute;right:2px;bottom:2px;z-index:2;display:grid;width:30px;height:30px;cursor:nwse-resize;touch-action:none;background:var(--bg)}
.p-body:has(.study-shell){display:flex;min-height:0;overflow:hidden;padding:0}
.study-shell{display:grid;grid-template-columns:152px minmax(0,1fr);width:100%;height:100%;min-width:0;min-height:0;overflow:hidden}
.study-sidenav{display:flex;flex-direction:column;gap:4px;padding:10px 8px;background:var(--side);border-right:1px solid var(--line);overflow:auto}
.study-sidenav button{display:flex;align-items:center;gap:9px;min-height:38px;padding:7px 9px;border:0;border-radius:6px;background:transparent;color:var(--ink-2);text-align:left;font-size:12.5px}
.study-sidenav button:hover{background:var(--soft-2);color:var(--ink)}
.study-sidenav button[aria-current="page"]{background:var(--blue-soft);color:var(--blue-2);font-weight:600}
.study-sidenav .ico{width:17px;height:17px}
.study-main{min-width:0;min-height:0;overflow:auto;padding:16px}
.study-tools-head{display:flex;align-items:center;gap:8px;margin-bottom:12px}.study-tools-head .in{margin:0;min-width:0}.study-tools-head .btn{white-space:nowrap}.study-workspace .in{margin-bottom:9px}.study-output{min-height:70px;max-height:240px;overflow:auto;margin-top:10px;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--side);white-space:pre-wrap;overflow-wrap:anywhere;font:13px/1.55 ui-monospace,SFMono-Regular,Menlo,monospace}.study-output:empty{display:none}.study-planner-list{list-style:none;margin:10px 0;padding:0}.study-planner-list li{display:flex;align-items:center;gap:8px;padding:8px 0;border-bottom:1px solid var(--line);font-size:13px}.study-planner-list li span{flex:1;min-width:0}.study-planner-list li small{color:var(--ink-3)}.study-flow{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin-top:12px}.study-flow span{padding:7px 9px;background:#e8f0ec;border-radius:6px;font-size:12px}.study-flow b{color:#c56832}.study-runner{width:100%;height:130px;border:1px solid var(--line);border-radius:8px;background:#101a18;margin-top:10px}
.planner-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;margin:10px 0 16px}.planner-stats span{padding:8px 9px;border:1px solid var(--line);border-radius:8px;color:var(--ink-3);font-size:11px}.planner-stats b{display:block;color:var(--ink);font-size:17px}.planner-session-form{display:grid;grid-template-columns:minmax(0,1fr) 205px 100px auto;gap:6px}.planner-session-form .in{min-width:0;margin:0;padding:7px}.planner-session-form .btn{white-space:nowrap}.planner-list-title{margin:18px 0 5px;font-size:13px}.planner-task input{accent-color:var(--ok)}.planner-task.done span{text-decoration:line-through;color:var(--ink-3)}.planner-task .ibtn{width:28px;height:28px}.planner-task small{white-space:nowrap;font-size:10.5px}
.latex-controls .in{margin-bottom:10px}.latex-controls .latex-macros{min-height:56px}.latex-display-toggle,.translate-preserve{display:flex;align-items:center;gap:7px;margin:5px 0 10px;font-size:12px;color:var(--ink-2)}.latex-display-toggle input,.translate-preserve input{accent-color:#176c53}.latex-preview{display:grid;place-items:center;min-height:92px;overflow:auto}.latex-preview .katex-display{max-width:100%;overflow:auto;padding:4px}.latex-preview:has(.katex){font-family:var(--sans)}
.latex-toolbar{display:flex;align-items:center;gap:4px;flex-wrap:wrap;padding:7px;border:1px solid var(--line);border-radius:8px;background:var(--side)}.latex-toolbar .in{width:130px;margin:0 4px 0 0}.latex-symbol{width:32px;height:32px;border:1px solid transparent;border-radius:6px;background:transparent;color:var(--ink-2);font:600 14px var(--sans)}.latex-symbol:hover{border-color:var(--line);background:var(--bg);color:var(--ink)}.latex-editor-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px;margin-top:12px}.latex-source-pane,.latex-output-pane{min-width:0;padding:12px;border:1px solid var(--line);border-radius:8px;background:var(--bg)}.latex-source-pane .f{margin-top:0}.latex-source{min-height:220px!important;font:13px/1.6 ui-monospace,SFMono-Regular,Menlo,monospace;tab-size:2}.latex-macros{min-height:55px!important;font:12px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace}.latex-pane-head{display:flex;align-items:center;justify-content:space-between;gap:8px;color:var(--ink-2);font-size:12px}.latex-pane-head span{font-variant-numeric:tabular-nums;color:var(--ink-3)}.latex-preview{min-height:220px;margin-top:8px;padding:14px;border:1px solid var(--line);border-radius:6px;background:var(--side);overflow:auto}.latex-preview .katex-display{max-width:100%;overflow:auto}.latex-error{min-height:0;margin:5px 0 0;color:var(--red-2);font-size:11px;overflow-wrap:anywhere}.latex-error:empty{display:none}
.translate-languages{display:grid;grid-template-columns:minmax(0,1fr) 34px minmax(0,1fr);align-items:end;gap:6px}.translate-languages .in{min-width:0}.translate-languages .ibtn{margin-bottom:9px}.translate-languages label{font-size:12px}
.diagram-controls{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:7px}.diagram-controls .in{margin:0}.diagram-controls .btn{white-space:nowrap}.latex-controls{min-width:0}.latex-controls .f{margin-top:6px}
.diagram-actions{display:flex;justify-content:flex-end;gap:6px;flex-wrap:wrap;margin-top:10px}.diagram-canvas{cursor:zoom-in}.diagram-canvas svg{width:100%;max-height:64vh}.sheet.diagram-sheet{z-index:70}.sheet.diagram-sheet .card2{display:flex;flex-direction:column;height:min(90vh,900px);max-height:90vh}.diagram-modal-tools{display:flex;align-items:center;justify-content:flex-end;gap:6px;margin:-4px 0 10px}.diagram-modal-tools output{min-width:48px;text-align:center;font-size:12px;font-variant-numeric:tabular-nums;color:var(--ink-2)}.diagram-modal-tools .ibtn{width:30px;height:30px;border:1px solid var(--line)}.diagram-modal-canvas{flex:1;min-height:0;overflow:auto;display:block;padding:14px;border:1px solid var(--line);border-radius:8px;background:var(--side)}.diagram-modal-canvas svg{display:block;max-width:none;height:auto}
.flashcard-create{margin-top:18px;padding-top:13px;border-top:1px solid var(--line)}.flashcard-create h4,.calc-history h4,.flashcard-deck-title{margin:0 0 8px;font-size:13px}.flashcard-create textarea.in{min-height:64px}.flashcard-review{margin:10px 0 14px;padding:14px;border:1px solid var(--line);border-radius:9px;background:var(--side)}.flashcard-progress{margin:0 0 8px;font-size:11px;color:var(--ink-3)}.flashcard-prompt>.small,.flashcard-answer>.small{font-size:10px;font-weight:700;text-transform:uppercase;color:var(--ink-3)}.flashcard-question{font:500 19px/1.4 var(--serif);margin:5px 0 0;overflow-wrap:anywhere}.flashcard-answer{margin-top:13px;padding-top:10px;border-top:1px solid var(--line)}.flashcard-answer p{margin:4px 0 0;white-space:pre-wrap;overflow-wrap:anywhere}.flashcard-controls{display:flex;gap:6px;flex-wrap:wrap;margin-top:13px}.flashcard-controls .btn{flex:1}.flashcard-saved{padding:8px 0;border-bottom:1px solid var(--line)}.flashcard-saved summary{font-size:12px;font-weight:600;cursor:pointer}.flashcard-saved p{font-size:12px;white-space:pre-wrap;margin:7px 0}.flashcard-saved small{font-size:10px;color:var(--ink-3)}.flashcard-card-actions{display:flex;gap:6px;margin:7px 0 3px}.flashcard-card-actions .btn{font-size:11px}.calc-result{font-size:15px;font-weight:600}.calc-history{margin-top:15px}.calc-history-item{width:100%;display:flex;justify-content:space-between;gap:12px;padding:7px 9px;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;font:12px ui-monospace,SFMono-Regular,Menlo,monospace}.calc-history-item:hover{background:var(--soft)}.calc-history-item span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink-2)}.calc-history-item b{color:var(--ink);white-space:nowrap}
.flashcard-create h4{display:flex;align-items:center;gap:7px}.flashcard-create h4 .ico{width:17px;height:17px;color:var(--blue)}.flashcard-review{animation:flashcard-arrive .26s ease-out both}.flashcard-prompt{min-height:125px;padding:12px;border:1px solid var(--line);border-radius:8px;background:var(--bg);transform-origin:center;animation:flashcard-arrive .24s ease-out both}.flashcard-prompt>.small,.flashcard-answer>.small{display:flex;align-items:center;gap:5px}.flashcard-prompt .small .ico{width:14px;height:14px}.flashcard-prompt.is-revealed{animation:flashcard-turn .32s ease-out both}.flashcard-question{font-size:21px}.flashcard-answer{animation:flashcard-answer-in .3s ease-out both}.flashcard-controls .btn{min-width:78px}.flashcard-controls .ico{width:16px;height:16px}.flashcard-saved{transition:background-color .16s ease,padding .16s ease}.flashcard-saved:hover{padding-right:7px;padding-left:7px;background:var(--soft)}.flashcard-saved[open] p{animation:flashcard-answer-in .2s ease-out both}.calculator-embedded{width:min(100%,540px);padding:14px;border:1px solid var(--line);border-radius:10px;background:var(--side);box-shadow:var(--shadow)}.calc-display{display:block;width:100%;min-height:57px;max-height:110px;resize:vertical;padding:10px 12px;border:1px solid var(--line);border-radius:7px;background:var(--bg);text-align:right;font:19px/1.4 ui-monospace,SFMono-Regular,Menlo,monospace}.calc-result-line{display:flex;align-items:center;justify-content:space-between;min-height:43px;margin:6px 0 10px;padding:3px 6px 3px 10px;border:1px solid var(--line);border-radius:7px;background:var(--bg)}.calc-result-line output{min-width:0;overflow-wrap:anywhere;font:600 16px/1.35 ui-monospace,SFMono-Regular,Menlo,monospace}.calculator-keys{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:5px}.calc-key{min-width:0;min-height:41px;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--ink);font:500 13px var(--sans);transition:background .14s ease,transform .14s ease,border-color .14s ease}.calc-key:hover{transform:translateY(-1px);border-color:var(--blue);background:var(--blue-soft)}.calc-key:active{transform:scale(.96)}.calc-key.operator{background:var(--soft);font-size:16px}.calc-key.function{color:var(--blue-2);font-size:12px}.calc-key.equals{border-color:var(--blue);background:var(--blue);color:var(--on-accent);font-weight:700}.calc-key.equals:hover{background:var(--blue-2)}
@keyframes flashcard-arrive{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes flashcard-turn{from{opacity:.6;transform:rotateX(9deg) scale(.985)}to{opacity:1;transform:rotateX(0) scale(1)}}@keyframes flashcard-answer-in{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:520px){.planner-session-form{grid-template-columns:minmax(0,1fr) minmax(110px,1fr)}.planner-session-form .btn{grid-column:1/-1}.translate-languages{grid-template-columns:minmax(0,1fr) 30px minmax(0,1fr)}.translate-languages select{font-size:12px;padding:7px 5px}}
@media(max-width:520px){.calendar-form{grid-template-columns:minmax(0,1fr) 112px}.calendar-form .btn{grid-column:1/-1}.calendar-day,.calendar-empty{min-height:32px}}
@media(max-width:700px){.latex-editor-grid{grid-template-columns:minmax(0,1fr)}.latex-source{min-height:160px!important}.latex-preview{min-height:140px}.latex-toolbar .sp{display:none}.latex-toolbar .btn{font-size:11px;padding:6px 8px}.calculator-embedded{padding:9px}.calculator-keys{gap:4px}.calc-key{min-height:38px;font-size:12px}.flashcard-controls .btn{flex:1 1 40%}}
@media(prefers-reduced-motion:reduce){.flashcard-review,.flashcard-prompt,.flashcard-prompt.is-revealed,.flashcard-answer,.flashcard-saved[open] p{animation:none}.calc-key,.flashcard-saved{transition:none}}
@media (prefers-reduced-motion:reduce){body{transition:none}}
a.btn{text-decoration:none}
.panelbox .kv{grid-template-columns:minmax(110px,auto) minmax(0,1fr)}
.page-head{flex-wrap:wrap;row-gap:8px}
.page-head h1{flex:1 1 180px}
@media (max-width:780px){.page-head #pageActions{width:100%}.page-head #pageActions .btn{flex:1 1 auto}}
@media (max-width:1100px){.panel:has(.study-shell){width:min(1100px,100%)}}
@media (max-width:780px){
  .study-shell{grid-template-columns:minmax(0,1fr);grid-template-rows:auto minmax(0,1fr)}
  .study-sidenav{flex-direction:row;gap:3px;padding:6px;overflow-x:auto;overflow-y:hidden;border-right:0;border-bottom:1px solid var(--line)}
  .study-sidenav button{flex:none;min-height:36px;padding:6px 9px;white-space:nowrap}
  .study-main{padding:12px}
  .main.study-tools-open.with-panel{grid-template-columns:minmax(0,1fr)}
}

.ide-editor-area{--ide-output-width:40%;grid-template-columns:minmax(0,1fr) 0 minmax(0,0);grid-template-rows:34px minmax(0,1fr);overflow:hidden}
.ide-tabs{grid-column:1/-1;grid-row:1}
.ide-editor{grid-column:1;grid-row:2}
.ide-splitter{grid-column:2;grid-row:2;display:none;cursor:col-resize;touch-action:none;background:var(--line)}
.ide-splitter:hover,.ide-splitter:focus-visible{background:var(--blue)}
.ide-bottom{grid-column:3;grid-row:2;display:none;min-width:0;border-top:0;border-left:1px solid var(--line)}
.ide-editor-area.has-output{grid-template-columns:minmax(240px,1fr) 6px minmax(240px,var(--ide-output-width))}
.ide-editor-area.has-output .ide-splitter{display:block}
.ide-editor-area.has-output .ide-bottom{display:flex}
.ide-editor-area.has-output .ide-bottom.collapsed{height:auto;min-width:34px}
.ide-editor-area.has-output.output-collapsed{grid-template-columns:minmax(240px,1fr) 6px 34px}
.ide-bottom.collapsed #ideOutput,.ide-bottom.collapsed .ide-build-steps{display:none}
.ide-bottom.collapsed .ide-bottom-head{height:100%;flex-direction:column;padding:6px 2px}
.ide-bottom.collapsed .ide-bottom-head b{writing-mode:vertical-rl}
.ide-build-steps{max-height:42%;overflow:auto;border-bottom:1px solid var(--line);padding:8px 10px}
.ide-build-step{display:flex;align-items:flex-start;gap:7px;padding:4px 0;color:var(--ink-2);font-size:11px}
.ide-build-step .ico{width:14px;height:14px;color:var(--ok)}
.ide-build-step.current .ico{color:var(--blue)}
.ide-ai-panel{position:absolute;z-index:42;top:14px;right:18px;width:min(380px,calc(100% - 24px));height:min(530px,calc(100% - 28px));min-width:290px;min-height:260px;display:flex;flex-direction:column;overflow:hidden;resize:both;border:1px solid var(--line);border-radius:10px;background:var(--bg);box-shadow:var(--shadow-lg)}
.ide-ai-panel[hidden]{display:none}
.ide-ai-head{height:42px;flex:none;display:flex;align-items:center;justify-content:space-between;padding:0 8px 0 12px;border-bottom:1px solid var(--line);background:var(--side);cursor:move;touch-action:none;user-select:none}
.ide-ai-head b{display:flex;align-items:center;gap:7px;font-size:12px}.ide-ai-head .ico{width:16px;height:16px}
.ide-ai-form{display:flex;flex-direction:column;min-height:0;flex:1;padding:10px;gap:8px}
.ide-ai-form textarea{min-height:76px;max-height:130px;resize:vertical;margin:0}
.ide-ai-context{font-size:10px;color:var(--ink-3)}
.ide-ai-submit{align-self:flex-end}
.ide-ai-progress{flex:1;min-height:0;overflow:auto;border-top:1px solid var(--line);padding-top:8px}
.ide-ai-progress:empty{display:none}
.ide-ai-progress-item{display:flex;gap:7px;align-items:flex-start;padding:5px 3px;color:var(--ink-2);font-size:11px;animation:fade-up .18s ease both}
.ide-ai-progress-item .ico{width:14px;height:14px;color:var(--ok)}
.ide-ai-progress-item.current .ico{color:var(--blue)}
@media(max-width:780px){.ide-editor-area.has-output{grid-template-columns:minmax(150px,1fr) 6px minmax(180px,44%)}.ide-editor-area.has-output.output-collapsed{grid-template-columns:minmax(150px,1fr) 6px 34px}.ide-ai-panel{top:8px;right:8px;width:min(360px,calc(100% - 16px));height:min(520px,calc(100% - 16px))}}
@media(prefers-reduced-motion:reduce){.ide-ai-progress-item{animation:none}}