:root{
  --navy:#1a3d63; --navy-d:#123055; --navy-deep:#0d2440;
  --ivory:#f6f4ee; --ivory-d:#efece2; --card:#fdfcf9; --card2:#f3efe4;
  --gold:#e0b25c; --gold-light:#f0cd8c; --gold-deep:#a8792a;
  --ink:#20283a; --text:#4f586c; --line:rgba(26,61,99,.14); --line2:rgba(26,61,99,.24);
  --on-navy:#f2ecdb; --on-navy-muted:#9fbab5; --terracotta:#a3432c;
  --ok:#2f7d5b; --ok-bg:rgba(47,125,91,.1);
  --k-pre:#2f8f5f; --k-pre-bg:rgba(95,214,155,.22);
  --k-root:#8a6410; --k-root-bg:rgba(240,194,78,.3);
  --k-suf:#2e6aa8; --k-suf-bg:rgba(111,182,240,.24);
  --athena:#8f6a17; --thor:#b8322c; --morpheus:#6b2a63; --luna:#1f3f8c;
  --serif:'Cormorant Garamond',Georgia,'Times New Roman',serif;
  --display:'Cinzel',Georgia,serif;
  --sans:'Manrope',system-ui,-apple-system,'Segoe UI',sans-serif;
  --shadow:0 1px 2px rgba(18,48,85,.06),0 12px 28px -14px rgba(18,48,85,.22);
  --ease:cubic-bezier(.2,.8,.25,1.15);
  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"]){
  --ivory:#0f1d31; --ivory-d:#0c1829; --card:#152740; --card2:#1b3150;
  --ink:#f2ecdb; --text:#b9c5d4; --line:rgba(240,205,140,.16); --line2:rgba(240,205,140,.3);
  --terracotta:#e79a7f; --ok:#7fd6ab; --ok-bg:rgba(127,214,171,.12);
  --k-pre:#8fe0b6; --k-root:#f0cd8c; --k-suf:#9cc9f2;
  --athena:#e0b25c; --thor:#f08a7e; --morpheus:#d59ad0; --luna:#9db8f5;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 12px 28px -14px rgba(0,0,0,.6); color-scheme:dark}}
:root[data-theme="dark"]{
  --ivory:#0f1d31; --ivory-d:#0c1829; --card:#152740; --card2:#1b3150;
  --ink:#f2ecdb; --text:#b9c5d4; --line:rgba(240,205,140,.16); --line2:rgba(240,205,140,.3);
  --terracotta:#e79a7f; --ok:#7fd6ab; --ok-bg:rgba(127,214,171,.12);
  --k-pre:#8fe0b6; --k-root:#f0cd8c; --k-suf:#9cc9f2;
  --athena:#e0b25c; --thor:#f08a7e; --morpheus:#d59ad0; --luna:#9db8f5;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 12px 28px -14px rgba(0,0,0,.6); color-scheme:dark}
*,*::before,*::after{box-sizing:inherit;margin:0;padding:0}
html{height:100%}
html{background:var(--ivory)}
body{min-height:100%;background:var(--ivory);color:var(--text);font-family:var(--sans);font-size:18px;line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit}
button{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px;border-radius:8px}
b,strong{color:var(--ink)}

.top{position:sticky;top:0;z-index:20;background:rgba(18,48,85,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid rgba(240,205,140,.16);padding-top:env(safe-area-inset-top,0px);margin-top:calc(-1 * env(safe-area-inset-top,0px))}
.top-in{max-width:820px;margin:0 auto;height:62px;padding:0 20px;display:flex;align-items:center;gap:14px}
.brand{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--on-navy);font-family:var(--display);font-weight:700;font-size:15px;letter-spacing:.02em;white-space:nowrap}
.brand-mark{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-size:14px;background:radial-gradient(circle at 35% 30%,#2a5a8a,var(--navy-deep));border:1px solid rgba(240,205,140,.55)}
.top-lesson{margin-left:auto;display:flex;align-items:center;gap:10px;color:var(--on-navy-muted);font-size:14px;font-weight:600;text-align:right;line-height:1.3}
.top-lesson img{width:40px;height:40px}
@media (max-width:520px){.brand .word{display:none}}

.wrap{max-width:760px;margin:0 auto;padding:26px 20px 90px}
.dots{display:flex;gap:8px;justify-content:center;margin:0 0 22px}
.dot{width:9px;height:9px;border-radius:50%;background:var(--line2);transition:transform .25s var(--ease),background-color .25s}
.dot.on{background:var(--acc);transform:scale(1.4)}
.dot.done{background:color-mix(in srgb,var(--acc) 55%,transparent)}
.stage{animation:enter .45s var(--ease) both}
@keyframes enter{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

.kicker{font-family:var(--serif);font-style:italic;font-weight:600;font-size:20px;color:var(--terracotta)}
h1{font-family:var(--serif);font-weight:700;font-size:clamp(34px,7vw,50px);line-height:1.05;color:var(--ink);margin:4px 0 14px}
h2{font-family:var(--serif);font-weight:700;font-size:clamp(28px,5.4vw,36px);line-height:1.1;color:var(--ink);margin:4px 0 10px}
h3{font-family:var(--display);font-weight:700;font-size:19px;color:var(--ink);letter-spacing:.01em}
p{margin:0 0 14px}
.lead{font-size:19px}
.muted{color:var(--text)}

.bigword{font-family:var(--sans);font-weight:800;font-size:clamp(34px,10vw,72px);letter-spacing:.03em;line-height:1.05;color:var(--ink);text-align:center;margin:18px 0 22px;word-break:break-word}
.seg{border-radius:10px;padding:0 .08em}
.seg.hl{color:var(--acc);background:color-mix(in srgb,var(--acc) 14%,transparent)}
.seg.hl2{color:var(--acc);background:color-mix(in srgb,var(--acc) 8%,transparent)}
.seg.hl3{color:var(--acc)}
.seg.pre{color:var(--k-pre);background:var(--k-pre-bg)}
.seg.root{color:var(--k-root);background:var(--k-root-bg)}
.seg.suf{color:var(--k-suf);background:var(--k-suf-bg)}
.k-pre{color:var(--k-pre)!important}.k-root{color:var(--k-root)!important}.k-suf{color:var(--k-suf)!important}

.card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:22px;margin:16px 0;box-shadow:var(--shadow)}
.card.soft{background:color-mix(in srgb,var(--acc) 6%,var(--card));border-color:color-mix(in srgb,var(--acc) 26%,transparent)}
.card .eyebrow{font-family:var(--serif);font-style:italic;font-weight:600;font-size:18px;color:var(--terracotta);margin-bottom:4px}

.say{display:grid;grid-template-columns:72px 1fr;gap:14px;align-items:center;margin:20px 0}
.say img{width:72px;height:72px}
.bubble{position:relative;background:var(--card);border:1px solid color-mix(in srgb,var(--acc) 35%,transparent);border-radius:18px;padding:14px 18px;font-family:var(--serif);font-style:italic;font-weight:600;font-size:21px;line-height:1.35;color:var(--ink);box-shadow:var(--shadow)}
.bubble::before{content:"";position:absolute;left:-8px;top:50%;width:14px;height:14px;background:var(--card);border-left:1px solid color-mix(in srgb,var(--acc) 35%,transparent);border-bottom:1px solid color-mix(in srgb,var(--acc) 35%,transparent);transform:translateY(-50%) rotate(45deg)}
.bubble small{display:block;font-family:var(--sans);font-style:normal;font-weight:700;font-size:13px;color:var(--text);margin-bottom:2px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--sans);font-weight:800;font-size:18px;line-height:1.2;text-decoration:none;padding:17px 26px;border-radius:14px;border:1px solid transparent;cursor:pointer;transition:transform .2s var(--ease),box-shadow .25s ease,background-color .2s,opacity .2s}
.btn:active{transform:translateY(1px) scale(.98)}
.btn-gold{background:linear-gradient(170deg,var(--gold-light),var(--gold));color:#2a1d05;box-shadow:0 1px 0 rgba(255,255,255,.5) inset,0 10px 24px -10px rgba(224,178,92,.75)}
.btn-gold:hover{transform:translateY(-2px)}
.btn-block{display:flex;width:100%;margin-top:18px}
.btn-ghost{background:transparent;border-color:var(--line2);color:var(--ink);font-weight:700;font-size:16px;padding:13px 20px}
.btn-ghost:hover{background:color-mix(in srgb,var(--ink) 5%,transparent)}
.btn-small{font-size:15px;padding:10px 16px;border-radius:11px}
.row-btns{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}

/* discover */
.pieces{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;margin:18px 0}
.piece{background:var(--card);border:2px solid var(--line);border-radius:18px;padding:16px 10px 14px;text-align:center;cursor:pointer;box-shadow:var(--shadow);transition:transform .2s var(--ease),border-color .2s}
.piece:hover{transform:translateY(-3px)}
.piece[aria-pressed="true"]{border-color:var(--acc)}
.piece .em{font-size:30px;line-height:1;display:block;margin-bottom:8px}
.piece .pc{font-weight:800;font-size:24px;letter-spacing:.02em;color:var(--acc);display:block}
.piece .mn{font-size:14px;font-weight:600;color:var(--text)}
.piece .seen{display:block;font-size:12px;color:var(--ok);font-weight:700;min-height:18px;margin-top:4px}
.info h3{font-family:var(--sans);font-weight:800;font-size:24px;color:var(--acc)}
.info .words{font-weight:700;color:var(--ink);margin:8px 0 0}
.info .tip{margin-top:10px;padding-top:10px;border-top:1px dashed var(--line2);font-size:16px}
.count{text-align:center;font-size:15px;color:var(--text);font-weight:600}

/* tasks */
.task-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:10px}
.tag{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:800;color:var(--acc);background:color-mix(in srgb,var(--acc) 10%,transparent);border:1px solid color-mix(in srgb,var(--acc) 30%,transparent);padding:4px 12px;border-radius:999px}
.of{font-size:14px;font-weight:700;color:var(--text)}
.prompt{font-family:var(--serif);font-weight:700;font-size:clamp(24px,4.8vw,30px);line-height:1.18;color:var(--ink);margin:6px 0 8px}
.intro{font-size:17px}
.opts{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin:16px 0 4px}
.opts.long{grid-template-columns:1fr}
.opt{background:var(--card2);border:2px solid var(--line);border-radius:14px;padding:15px 16px;font-weight:700;font-size:18px;color:var(--ink);cursor:pointer;text-align:center;transition:transform .15s var(--ease),border-color .15s,background-color .15s,opacity .2s}
.opts.long .opt{text-align:left;font-weight:600;font-size:17px;line-height:1.45}
.opt:hover{border-color:color-mix(in srgb,var(--acc) 50%,transparent)}
.opt:active{transform:scale(.97)}
.opt.word{font-size:21px;font-weight:800;letter-spacing:.02em}
.opt.right{background:var(--ok-bg);border-color:var(--ok);color:var(--ok)}
.opt.tried{opacity:.45;border-style:dashed}
.opt.sel{border-color:var(--acc);background:color-mix(in srgb,var(--acc) 10%,var(--card2))}
.opt:disabled{cursor:default}
.fb{min-height:30px;margin-top:12px;font-size:17px;font-weight:600}
.fb .ok{color:var(--ok)}
.fb .nudge{color:var(--terracotta)}
.hintbox{margin-top:12px;font-size:16px;background:color-mix(in srgb,var(--gold) 14%,transparent);border-radius:12px;padding:10px 14px;color:var(--ink)}
.linkbtn{background:none;border:0;color:var(--text);font-size:15px;font-weight:700;text-decoration:underline;text-underline-offset:3px;cursor:pointer;padding:6px 0}

.sort-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:10px 0;border-bottom:1px solid var(--line)}
.sort-row:last-child{border-bottom:0}
.sort-word{font-weight:800;font-size:21px;color:var(--ink);min-width:150px;letter-spacing:.01em}
.sort-word .tick{color:var(--ok);margin-left:6px}
.sort-opts{display:flex;gap:8px;flex-wrap:wrap}
.chip{border:2px solid var(--line);background:var(--card2);border-radius:999px;padding:7px 16px;font-weight:700;font-size:16px;color:var(--ink);cursor:pointer;transition:border-color .15s,background-color .15s}
.chip[aria-pressed="true"]{border-color:var(--acc);background:color-mix(in srgb,var(--acc) 14%,var(--card2))}
.chip.pre[aria-pressed="true"]{border-color:var(--k-pre);background:var(--k-pre-bg)}
.chip.root[aria-pressed="true"]{border-color:var(--k-root);background:var(--k-root-bg)}
.chip.suf[aria-pressed="true"]{border-color:var(--k-suf);background:var(--k-suf-bg)}

.slots{display:grid;gap:14px;margin:16px 0}
.slot-label{font-size:14px;font-weight:700;color:var(--text);margin-bottom:6px}
.assembled{text-align:center;font-weight:800;font-size:48px;white-space:nowrap;overflow:hidden;letter-spacing:.02em;color:var(--ink);min-height:62px;margin:8px 0;padding:10px;border:2px dashed var(--line2);border-radius:16px}
.assembled .gap{color:var(--line2)}

.sentence{font-size:22px;line-height:2.1;margin:16px 0}
.wbtn{display:inline;background:none;border:0;border-bottom:2px dotted var(--line2);padding:0 2px;margin:0 1px;font-size:22px;font-weight:600;color:var(--ink);cursor:pointer;border-radius:4px}
.wbtn:hover{background:color-mix(in srgb,var(--acc) 10%,transparent)}
.wbtn.found{border-bottom-color:var(--terracotta);color:var(--terracotta)}
.wbtn.fixed{border-bottom:0;color:var(--ok);background:var(--ok-bg);font-weight:800}

.parts{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin:14px 0 4px}
.part{text-align:center}
.part .seg{display:inline-block;font-weight:800;font-size:clamp(30px,8vw,46px);letter-spacing:.02em;padding:2px 12px}
.part .m{display:block;font-size:15px;font-weight:700;color:var(--text);margin-top:4px}
.reveal{margin-top:14px;padding:16px 18px;border-radius:14px;background:color-mix(in srgb,var(--acc) 8%,var(--card2));border:1px solid color-mix(in srgb,var(--acc) 26%,transparent);font-size:17px}

.thor{display:grid;grid-template-columns:64px 1fr;gap:14px;align-items:center;margin:10px 0 6px}
.thor img{width:64px;height:64px}
.thor .bubble{font-size:20px}

.next-row{display:flex;justify-content:flex-end;margin-top:14px}

/* paper */
.tutor{background:color-mix(in srgb,var(--navy) 5%,var(--card));border:1px solid var(--line);border-left:4px solid var(--gold);border-radius:14px;padding:16px 18px;margin:16px 0}
.tutor .th{font-size:13px;font-weight:800;letter-spacing:.06em;color:var(--gold-deep);margin-bottom:6px}
.tutor p{font-size:16px;line-height:1.6}
.spell{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
.spell button,.spell span{border:2px solid var(--line);background:var(--card);border-radius:12px;padding:8px 14px;font-weight:800;font-size:19px;color:var(--ink);letter-spacing:.02em}
.spell button{cursor:pointer}
.spell button[aria-pressed="true"]{border-color:var(--ok);background:var(--ok-bg);color:var(--ok)}
.hidden-words{font-size:15px;color:var(--text);font-style:italic;padding:10px 0}

/* finish */
.finale{text-align:center;padding-top:6px}
.finale .em{font-size:60px;display:block;margin-bottom:6px}
.plist{display:grid;gap:8px;margin-top:6px}
.plist div{display:flex;gap:12px;align-items:baseline}
.plist b{font-weight:800;color:var(--acc);min-width:80px;font-size:19px}
details.idea{background:var(--card);border:1px solid var(--line);border-radius:14px;margin-bottom:8px}
details.idea>summary{list-style:none;cursor:pointer;padding:14px 16px;font-weight:700;font-size:17px;color:var(--ink);display:flex;align-items:center;gap:10px}
details.idea>summary::-webkit-details-marker{display:none}
details.idea>summary::after{content:'+';margin-left:auto;color:var(--gold-deep);font-size:22px;line-height:1}
details.idea[open]>summary::after{content:'\2212'}
details.idea .mins{font-size:13px;font-weight:600;color:var(--text)}
details.idea .body{padding:0 16px 16px;font-size:16px;line-height:1.65}
.foot{text-align:center;font-size:14px;color:var(--text);margin-top:36px}
.foot a{color:var(--ink);font-weight:700}

@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}
@media (max-width:560px){
  .wrap{padding:20px 16px 80px}
  .sort-word{min-width:100%}
  .say{grid-template-columns:56px 1fr}.say img{width:56px;height:56px}
  .bubble{font-size:19px}
}

/* ============== App shell (dashboard, login, header) ============== */
header.top-bar{position:sticky;top:0;z-index:30;background:linear-gradient(180deg,var(--navy),var(--navy-d));border-bottom:1px solid rgba(240,205,140,.18);height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 max(4vw,18px);padding-top:env(safe-area-inset-top,0px);margin-top:calc(-1 * env(safe-area-inset-top,0px))}
.brand{display:flex;gap:10px;align-items:center;color:var(--on-navy);text-decoration:none}
.brand .mark{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;font-size:15px;background:radial-gradient(circle at 35% 30%,#2a5a8a,var(--navy-deep));border:1px solid rgba(240,205,140,.55);color:var(--gold-light)}
.brand .word{font-family:var(--display);font-weight:700;font-size:16px;letter-spacing:.01em}
.brand .word small{font-weight:400;opacity:.8;font-size:13px}
#signout{background:transparent;border:1px solid rgba(240,205,140,.4);color:var(--on-navy);font-weight:700;font-size:14px;padding:9px 16px;border-radius:10px;cursor:pointer;font-family:var(--sans)}
#signout:hover{background:rgba(240,205,140,.1)}
.mainnav{display:flex;gap:4px;margin:0 14px 0 auto}
.mainnav button{background:transparent;border:0;color:var(--on-navy-muted);font-weight:700;font-size:14px;padding:9px 12px;border-radius:10px;cursor:pointer;font-family:var(--sans);white-space:nowrap}
.mainnav button:hover{color:var(--on-navy);background:rgba(240,205,140,.1)}
.mainnav button[aria-current="page"]{color:var(--gold-light);background:rgba(240,205,140,.14)}
.mainnav button:focus-visible,#signout:focus-visible{outline:2px solid var(--gold-light);outline-offset:2px}
@media (max-width:820px){
  header.top-bar{height:auto;flex-wrap:wrap;row-gap:6px;padding-top:calc(10px + env(safe-area-inset-top,0px));padding-bottom:8px}
  .mainnav{order:3;flex-basis:100%;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:4px}
  .mainnav button{white-space:normal;line-height:1.2;padding:8px 4px;font-size:13px}
}
[hidden]{display:none!important}
main.shell{max-width:1080px;margin:0 auto;padding:32px 20px 90px;min-height:calc(100vh - 160px)}
body{background:var(--ivory);color:var(--text);font-family:var(--sans);margin:0}

/* login */
.login{max-width:460px;margin:40px auto;padding:40px 34px;background:var(--card);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);text-align:center}
.login .sigil{font-size:42px;color:var(--gold-deep)}
.login .eyebrow{font-family:var(--serif);font-style:italic;font-weight:600;color:var(--terracotta);font-size:18px;display:block;margin:10px 0 2px}
.login h1{font-family:var(--serif);font-weight:700;font-size:clamp(30px,7vw,40px);margin:6px 0 12px;color:var(--ink)}
.login>p{line-height:1.6;color:var(--text)}
.login form{text-align:left;margin-top:22px}
.login label{display:block;font-weight:700;margin-bottom:8px;color:var(--ink);font-size:14px}
.login input{width:100%;padding:14px 15px;border:1px solid var(--line2);border-radius:12px;font:inherit;font-size:17px;background:var(--card2);color:var(--ink)}
.login input:focus-visible{outline:3px solid var(--gold);outline-offset:1px}
.login button[type=submit]{display:flex;width:100%;align-items:center;justify-content:center;gap:8px;margin-top:16px;background:linear-gradient(170deg,var(--gold-light),var(--gold));color:#2a1d05;font-weight:800;font-size:17px;padding:14px 20px;border:0;border-radius:12px;cursor:pointer;box-shadow:0 10px 22px -10px rgba(224,178,92,.75)}
#error{color:#a23b3b;min-height:1.4em;font-size:14px;font-weight:600;margin-top:10px}

/* dashboard welcome + stat */
.welcome{background:linear-gradient(160deg,var(--navy),var(--navy-d));border-radius:22px;padding:38px 36px;color:var(--on-navy);position:relative;overflow:hidden}
.welcome .eyebrow{font-family:var(--serif);font-style:italic;font-weight:600;color:var(--gold-light);font-size:18px}
.welcome h1{font-family:var(--serif);font-weight:700;color:var(--on-navy);font-size:clamp(28px,5vw,40px);margin:8px 0 10px}
.welcome p{max-width:620px;line-height:1.6;color:var(--on-navy-muted)}
.stat{display:inline-flex;align-items:center;gap:9px;margin-top:16px;background:rgba(255,255,255,.08);padding:10px 18px;border-radius:11px;border:1px solid rgba(240,205,140,.2)}
.stat strong{font-family:var(--display);font-size:24px;color:var(--gold-light)}
.stat span{color:var(--on-navy-muted);font-size:14px}

.section-head{margin:42px 0 16px}
.section-head h2{font-family:var(--serif);font-weight:700;color:var(--ink);font-size:26px;margin:0}
.section-head p{margin:6px 0 0;color:var(--text);font-size:15px}

/* teacher tabs */
.teachers{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.teacher{appearance:none;text-align:left;font:inherit;cursor:pointer;display:flex;flex-direction:column;gap:3px;border-radius:16px;padding:16px 16px 14px;background:var(--card);border:1px solid var(--line);border-top:4px solid var(--colour);box-shadow:var(--shadow);color:var(--ink);transition:transform .18s var(--ease),border-color .18s,background .18s}
.teacher:hover{transform:translateY(-2px);border-color:var(--line2)}
.teacher:focus-visible{outline:3px solid var(--colour);outline-offset:2px}
.teacher[aria-selected="true"]{background:color-mix(in srgb,var(--colour) 9%,var(--card));border-color:var(--colour);box-shadow:0 0 0 1px var(--colour),var(--shadow)}
.teacher .icon{font-size:24px;color:var(--colour)}
.teacher .t-name{font-family:var(--display);font-weight:700;font-size:18px;margin-top:4px}
.teacher .t-area{font-size:13px;line-height:1.4;color:var(--text)}
.teacher .t-count{font-size:12.5px;font-weight:700;color:var(--text)}
.teacher progress{appearance:none;-webkit-appearance:none;width:100%;height:7px;border:0;border-radius:99px;margin-top:8px;background:color-mix(in srgb,var(--colour) 14%,transparent);overflow:hidden}
.teacher progress::-webkit-progress-bar{background:color-mix(in srgb,var(--colour) 14%,transparent);border-radius:99px}
.teacher progress::-webkit-progress-value{background:var(--colour);border-radius:99px}
.teacher progress::-moz-progress-bar{background:var(--colour);border-radius:99px}

/* the chosen teacher's lessons */
.lesson-panel{margin-top:18px;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:var(--shadow);outline:none}
.panel-head{display:flex;align-items:center;gap:14px}
.panel-head img{width:56px;height:56px;border-radius:50%;border:3px solid var(--colour);object-fit:cover}
.panel-head h2{font-family:var(--serif);font-weight:700;font-size:24px;color:var(--ink);margin:0}
.panel-head p{margin:3px 0 0;color:var(--text);font-size:14px}
.next-up{margin-top:18px;border-radius:16px;padding:18px 20px;background:linear-gradient(160deg,var(--navy),var(--navy-d));color:var(--on-navy)}
.next-up .next-label{margin:0;font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--gold-light)}
.next-up h3{font-family:var(--serif);font-weight:700;font-size:23px;margin:6px 0 4px;color:var(--on-navy);line-height:1.2}
.next-up .next-hook{margin:0 0 14px;color:var(--on-navy-muted);font-size:14.5px;line-height:1.5}
.next-up.all-done .next-hook{margin:0}
.next-go{background:linear-gradient(170deg,var(--gold-light),var(--gold));color:#2a1d05;font-weight:800;border:0;padding:12px 18px;border-radius:11px;cursor:pointer;font-size:15px;font-family:var(--sans)}
.next-go:hover{filter:brightness(1.05)}
.filters{display:flex;gap:8px;margin:20px 0 10px;flex-wrap:wrap}
.filters .chip{appearance:none;font:inherit;font-size:13.5px;font-weight:700;padding:7px 14px;border-radius:99px;border:1px solid var(--line2);background:var(--card);color:var(--text);cursor:pointer}
.filters .chip[aria-pressed="true"]{background:var(--colour);border-color:var(--colour);color:var(--card)}
.lesson-rows{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.lesson-rows li{min-width:0}
.lesson-row{appearance:none;font:inherit;width:100%;display:flex;align-items:center;gap:12px;text-align:left;padding:11px 12px;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--ink);cursor:pointer;transition:border-color .15s,background .15s}
.lesson-row:hover{border-color:var(--colour);background:color-mix(in srgb,var(--colour) 5%,var(--card))}
.lesson-row:focus-visible{outline:3px solid var(--colour);outline-offset:1px}
.row-num{flex:none;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:14px;color:var(--colour);border:2px solid var(--colour)}
.is-done .row-num{background:var(--ok);border-color:var(--ok);color:var(--card)}
.row-text{flex:1;min-width:0;display:flex;flex-direction:column}
.row-title{font-family:var(--serif);font-weight:700;font-size:16.5px;line-height:1.25}
.row-hook{font-size:13px;color:var(--text);line-height:1.35;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row-go{flex:none;font-size:13px;font-weight:800;color:var(--gold-deep)}
.is-done .row-go{color:var(--text);font-weight:700}
.rows-empty{color:var(--text);margin:6px 2px}

/* activity shortcuts */
.explore{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.explore-card{appearance:none;font:inherit;text-align:left;cursor:pointer;display:flex;flex-direction:column;gap:4px;padding:16px 18px;border-radius:16px;background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);color:var(--ink);transition:transform .18s var(--ease),border-color .18s}
.explore-card:hover{transform:translateY(-2px);border-color:var(--morpheus)}
.explore-card .icon{font-size:24px}
.explore-card .x-title{font-family:var(--display);font-weight:700;font-size:17px}
.explore-card .x-desc{font-size:13.5px;color:var(--text);line-height:1.45}

.card{border-radius:16px;padding:18px 19px;background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .18s var(--ease),border-color .18s}
.card:hover{transform:translateY(-2px);border-color:var(--line2)}
.card .tag{font-size:11.5px;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--gold-deep)}
.card h3{font-family:var(--serif);font-weight:700;font-size:19px;margin:6px 0 5px;color:var(--ink);line-height:1.2}
.card p{font-size:13.5px;line-height:1.5;color:var(--text);margin:0 0 12px;flex:1}
.card .done{color:var(--ok);font-weight:700;font-size:13px;margin:0 0 10px}
.card > button{margin-top:auto;background:linear-gradient(170deg,var(--gold-light),var(--gold));color:#2a1d05;font-weight:800;border:0;padding:11px 16px;border-radius:10px;cursor:pointer;font-size:14.5px;font-family:var(--sans)}
.card > button:hover{filter:brightness(1.05)}

.text-button{background:none;border:0;color:var(--terracotta);font-weight:700;cursor:pointer;font-size:15px;padding:8px 0;font-family:var(--sans)}

footer.app-foot{text-align:center;color:var(--text);padding:26px;border-top:1px solid var(--line);font-size:13px;background:var(--ivory)}

@media (max-width:860px){.teachers{grid-template-columns:repeat(2,1fr)}.lesson-rows{grid-template-columns:1fr}.explore{grid-template-columns:1fr}}
@media (max-width:520px){.welcome{padding:24px 22px}.welcome h1{font-size:26px}.welcome p{font-size:15px}.stat{margin-top:10px}.section-head{margin:28px 0 12px}.teachers{gap:8px}.teacher{padding:12px 12px 11px}.teacher .t-area{display:none}.lesson-panel{padding:16px 14px}.login{padding:28px 22px}}

/* lesson view chrome */
#lesson .top-lesson,#forge .top-lesson,#workshop .top-lesson,#sentences .top-lesson{display:flex;align-items:center;justify-content:space-between;gap:14px;max-width:760px;margin:0 auto 6px;padding-top:6px}
#workshop .top-lesson,#sentences .top-lesson,#sview{max-width:820px}
#sview{margin:0 auto}
#lesson .top-lesson .eyebrow,#forge .top-lesson .eyebrow,#workshop .top-lesson .eyebrow,#sentences .top-lesson .eyebrow{font-family:var(--serif);font-style:italic;font-weight:600;color:var(--terracotta);font-size:15px}
#view,#fview{max-width:760px;margin:0 auto}

/* accent colour per lesson, set via data-accent on <html> instead of inline style (CSP-safe) */
:root[data-accent="thor"]{--acc:var(--thor)}
:root[data-accent="athena"]{--acc:var(--athena)}
:root[data-accent="morpheus"]{--acc:var(--morpheus)}
:root[data-accent="luna"]{--acc:var(--luna)}

/* small utility classes replacing one-off inline styles (CSP-safe) */
.m0{margin:0}
.mt6{margin-top:6px}
.info-mean{font-weight:600;color:var(--text);font-size:18px}

/* build-task assembled word: bucketed sizes instead of a JS-computed inline font-size (CSP-safe) */
.assembled.len-s{font-size:clamp(30px,8.5vw,48px)}
.assembled.len-m{font-size:clamp(24px,6.5vw,36px)}
.assembled.len-l{font-size:clamp(19px,5vw,28px)}
.assembled.len-xl{font-size:clamp(15px,3.8vw,22px)}

/* teacher colour, set via data-teacher instead of inline style (CSP-safe) */
[data-teacher="Thor"]{--colour:var(--thor)}
[data-teacher="Athena"]{--colour:var(--athena)}
[data-teacher="Luna"]{--colour:var(--luna)}
[data-teacher="Morpheus"]{--colour:var(--morpheus)}
[data-teacher="Merlin"]{--colour:var(--gold-deep)}

/* ============== The Forge (word-builder) ============== */
.activity-sub{font-family:var(--display);font-weight:700;font-size:17px;color:var(--ink);margin:24px 0 12px}
.play-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px;margin-bottom:8px}
.play-grid-4{grid-template-columns:repeat(4,1fr)}
.play-activity{border-radius:16px;padding:18px 19px;background:var(--card);border:1px solid var(--line);border-top:4px solid var(--level);box-shadow:var(--shadow);display:flex;flex-direction:column}
.play-activity[data-level="starter"]{--level:var(--k-pre)}
.play-activity[data-level="developing"]{--level:var(--k-root)}
.play-activity[data-level="stretch"]{--level:var(--k-suf)}
.play-activity[data-level="workshop"]{--level:var(--morpheus)}
.play-activity[data-teacher]{--level:var(--colour)}
.sb-dash-label{font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.1em;color:var(--text);margin:14px 0 8px}
.play-activity .tag{font-size:11.5px;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--level)}
.play-activity h3{font-family:var(--serif);font-weight:700;font-size:21px;margin:6px 0 5px;color:var(--ink);line-height:1.2}
.play-activity p{font-size:13.5px;line-height:1.5;color:var(--text);margin:0 0 14px;flex:1}
.play-activity button{margin-top:auto;background:linear-gradient(170deg,var(--gold-light),var(--gold));color:#2a1d05;font-weight:800;border:0;padding:11px 16px;border-radius:10px;cursor:pointer;font-size:14.5px;font-family:var(--sans)}
.play-activity button:hover{filter:brightness(1.05)}
@media (max-width:860px){.play-grid{grid-template-columns:1fr}.play-grid-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.play-grid-4{grid-template-columns:1fr}}
#fview .btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.fclear{margin-top:10px}
#fchallenge{margin-top:12px}

.flevels{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:0 0 18px}
.flevel{background:var(--card);border:2px solid var(--line);border-radius:14px;padding:13px 8px;text-align:center;cursor:pointer;font-weight:800;font-size:15px;color:var(--text);font-family:var(--sans)}
.flevel[aria-pressed="true"]{border-color:var(--gold);color:var(--gold-deep);background:color-mix(in srgb,var(--gold) 10%,var(--card))}
.flevel small{display:block;font-weight:600;font-size:11px;color:var(--text);margin-top:2px}

.fmodes{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:0 0 14px}
.fmode{background:var(--card);border:2px solid var(--line);border-radius:14px;padding:12px 8px;text-align:center;cursor:pointer;font-weight:800;font-size:15px;color:var(--text);font-family:var(--sans)}
.fmode[aria-pressed="true"]{border-color:var(--gold);color:var(--gold-deep);background:color-mix(in srgb,var(--gold) 10%,var(--card))}
.fmode:disabled{opacity:.4;cursor:not-allowed}

.fbench{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:18px 14px;margin:0 0 16px;box-shadow:var(--shadow)}
.fslots{display:flex;align-items:stretch;justify-content:center;gap:12px;flex-wrap:wrap}
.fslot{flex:1 1 84px;min-height:70px;border:2px dashed var(--line2);border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:6px 4px;transition:.15s;background:color-mix(in srgb,var(--ink) 3%,transparent);cursor:pointer}
.fslot .lbl{font-size:10px;letter-spacing:1.6px;text-transform:uppercase;color:var(--text);opacity:.8;font-weight:700}
.fslot.filled{border-style:solid}
.fslot[data-type="prefix"].filled{border-color:var(--k-pre)}
.fslot[data-type="root"].filled{border-color:var(--k-root)}
.fslot[data-type="suffix"].filled{border-color:var(--k-suf)}
.fslot[data-type="g1"].filled,.fslot[data-type="g2"].filled{border-color:var(--k-root)}
.fslot .txt{font-size:20px;font-weight:800;letter-spacing:.3px}
.fslot[data-type="prefix"] .txt{color:var(--k-pre)}
.fslot[data-type="root"] .txt{color:var(--k-root)}
.fslot[data-type="suffix"] .txt{color:var(--k-suf)}
.fslot[data-type="g1"] .txt,.fslot[data-type="g2"] .txt{color:var(--k-root)}
.fslot .mn{font-size:11px;color:var(--text);margin-top:1px;text-align:center;line-height:1.2}
.fplus{align-self:center;font-size:22px;color:var(--text);flex:0 0 auto}

.frack{margin:18px 0 4px}
.frack h3{font-size:12px;letter-spacing:2px;text-transform:uppercase;margin:0 0 9px;font-weight:800;font-family:var(--sans)}
.frack[data-kind="prefix"] h3{color:var(--k-pre)}
.frack[data-kind="root"] h3{color:var(--k-root)}
.frack[data-kind="suffix"] h3{color:var(--k-suf)}
.fblocks{display:flex;flex-wrap:wrap;gap:9px}
.fblock{border-radius:11px;padding:10px 13px;font-weight:800;font-size:15px;cursor:pointer;border:1px solid rgba(0,0,0,.18);font-family:var(--sans);color:inherit}
.fblock small{display:block;font-weight:600;font-size:11px;opacity:.8}
.fblock:disabled{opacity:.32;cursor:not-allowed}
.fblock[data-kind="prefix"]{background:linear-gradient(180deg,#8fe0b6,#5fd69b);color:#06331f}
.fblock[data-kind="root"]{background:linear-gradient(180deg,var(--gold-light),var(--gold));color:#2a1d05}
.fblock[data-kind="suffix"]{background:linear-gradient(180deg,#9cc9f2,#6fb6f0);color:#08243d}

.fout{border-radius:18px;padding:20px 16px;margin:16px 0;border:2px solid var(--line);background:var(--card);text-align:center;box-shadow:var(--shadow)}
.fout.real{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 8%,var(--card))}
.fout.invent,.fout.near,.fout.new{border-color:var(--luna);background:color-mix(in srgb,var(--luna) 7%,var(--card))}
.fout.old{border-color:var(--gold-deep);background:color-mix(in srgb,var(--gold) 10%,var(--card))}
.fout .ftag{font-size:12px;letter-spacing:2px;text-transform:uppercase;font-weight:800;margin-bottom:8px;font-family:var(--sans)}
.fout.real .ftag{color:var(--ok)} .fout.old .ftag{color:var(--gold-deep)} .fout.near .ftag,.fout.new .ftag{color:var(--luna)}
.fout .fword{font-family:var(--sans);font-size:clamp(26px,7vw,40px);font-weight:800;line-height:1.1;word-break:break-word;margin-bottom:8px;color:var(--ink)}
.fout .fword .p{color:var(--k-pre)} .fout .fword .r{color:var(--k-root)} .fout .fword .s{color:var(--k-suf)}
.fout .fmean{font-size:17px;line-height:1.5;color:var(--ink)}
.fout .fsub{font-size:14px;color:var(--text);margin-top:10px;line-height:1.55}
.hint-word{color:var(--gold-deep);font-weight:800}

.fledger{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px;margin:18px 0;box-shadow:var(--shadow)}
.fledger h3{font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--gold-deep);margin:0 0 10px;font-family:var(--sans)}
.fchips{display:flex;flex-wrap:wrap;gap:8px}
.fchip{background:var(--card2);border:1px solid var(--line);border-radius:20px;padding:6px 12px;font-size:14px;font-family:var(--sans);font-weight:700;color:var(--ink)}
.fchip.old{border-color:var(--gold-deep);color:var(--gold-deep)}
.fchip.near,.fchip.new{border-style:dashed;color:var(--text)}
.fcount{font-size:14px;color:var(--text);margin-top:10px}

.fhunt{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px;margin:18px 0;box-shadow:var(--shadow)}
.fhunt h3{font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--gold-deep);margin:0 0 6px;font-family:var(--sans)}
.frootbars{display:grid;grid-template-columns:repeat(auto-fit,minmax(126px,1fr));gap:8px;margin:12px 0}
.frb{background:var(--card2);border:1px solid var(--line);border-radius:11px;padding:9px 11px;cursor:pointer}
.frb.done{border-color:var(--gold-deep);background:color-mix(in srgb,var(--gold) 16%,var(--card2))}
.frb .t{display:flex;justify-content:space-between;align-items:baseline;font-size:14px;font-weight:800;margin-bottom:6px;color:var(--ink);font-family:var(--sans)}
.frb .t span:last-child{color:var(--text);font-weight:600;font-size:12px}
.frb progress{-webkit-appearance:none;appearance:none;width:100%;height:6px;border:0;border-radius:4px;overflow:hidden}
.frb progress::-webkit-progress-bar{background:var(--line)}
.frb progress::-webkit-progress-value{background:linear-gradient(90deg,var(--gold-deep),var(--gold))}
.frb progress::-moz-progress-bar{background:linear-gradient(90deg,var(--gold-deep),var(--gold))}

/* ============== Morphology Workshop ============== */
#wview{max-width:820px;margin:0 auto}
#wview .btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.wtabs{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 16px}
.wtab{background:var(--card);border:1px solid var(--line2);color:var(--ink);border-radius:999px;padding:8px 14px;font-size:15px;font-weight:700;cursor:pointer;font-family:var(--sans);transition:transform .12s,border-color .12s}
.wtab:hover{border-color:var(--morpheus)}
.wtab:active{transform:scale(.97)}
.wtab[aria-current="true"]{background:var(--gold);border-color:var(--gold);color:#2a1d05}
.wcard{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:22px 20px}
.wphead{display:flex;align-items:center;gap:14px;margin-bottom:6px}
.wphead img{flex:0 0 auto;width:46px;height:46px;border-radius:50%;border:3px solid var(--morpheus)}
.wphead h2{font-family:var(--display);font-weight:700;font-size:clamp(21px,5vw,26px);line-height:1.2;margin:0;color:var(--ink)}
.wwho{margin:0;font-size:14px;color:var(--terracotta);font-weight:700}
.wvoice{font-family:var(--serif);font-style:italic;font-weight:600;font-size:clamp(21px,4.8vw,24px);line-height:1.4;color:var(--ink);margin:14px 0 6px}
.whow{margin:0 0 16px;font-size:16px;line-height:1.6}
.whow.wcenter{text-align:center;margin-top:-10px}
.wkey{display:flex;flex-wrap:wrap;gap:8px 14px;font-size:14px;margin:0 0 14px}
.wkey span{display:inline-flex;align-items:center;gap:6px}
.wkey i{width:14px;height:14px;border-radius:4px;display:inline-block;border:1px solid}
.wkey i.pre{background:var(--k-pre-bg);border-color:var(--k-pre)}
.wkey i.root{background:var(--k-root-bg);border-color:var(--k-root)}
.wkey i.suf{background:var(--k-suf-bg);border-color:var(--k-suf)}
.wtray{display:flex;flex-wrap:wrap;gap:10px}
.wtile{background:var(--card);border:1.5px solid var(--line2);border-radius:12px;padding:10px 16px;font-family:var(--sans);font-size:clamp(19px,4.6vw,22px);font-weight:700;color:var(--ink);cursor:pointer;letter-spacing:.02em;transition:transform .1s,border-color .12s,background-color .12s,opacity .12s}
.wtile:hover:not(:disabled){border-color:var(--morpheus)}
.wtile:active:not(:disabled){transform:scale(.95)}
.wtile:disabled{cursor:default}
.wtile.sel{background:color-mix(in srgb,var(--morpheus) 12%,var(--card));border-color:var(--morpheus)}
.wtile.tried{opacity:.55}
.wtile.good{background:var(--k-root-bg);border-color:var(--k-root)}
.wtile.missed{border-color:var(--terracotta);border-style:dashed}
.wtile small{display:block;font-size:13px;font-weight:600;color:var(--text);letter-spacing:0}
.wword{display:flex;justify-content:center;flex-wrap:wrap;gap:4px;margin:6px 0 18px}
.wlt{min-width:clamp(30px,8vw,46px);height:clamp(48px,12vw,62px);display:grid;place-items:center;border-radius:10px;background:var(--card);border:1.5px solid var(--line2);font-family:var(--sans);font-size:clamp(24px,6.5vw,34px);font-weight:800;color:var(--ink);cursor:pointer;padding:0 4px;transition:background-color .12s,border-color .12s}
.wlt.sel{background:var(--k-root-bg);border-color:var(--k-root)}
.wlt.pre{background:var(--k-pre-bg);border-color:var(--k-pre);cursor:default}
.wlt.root{background:var(--k-root-bg);border-color:var(--k-root);cursor:default}
.wlt.suf{background:var(--k-suf-bg);border-color:var(--k-suf);cursor:default}
.wbig{text-align:center;font-size:clamp(30px,8vw,46px);font-weight:800;color:var(--ink);margin:6px 0 18px;letter-spacing:.02em;line-height:1.3}
.wbig .p{background:var(--k-pre-bg);border:1.5px solid var(--k-pre);border-radius:10px;padding:0 8px}
.wbig .r{background:var(--k-root-bg);border:1.5px solid var(--k-root);border-radius:10px;padding:0 8px}
.wbig .s{background:var(--k-suf-bg);border:1.5px solid var(--k-suf);border-radius:10px;padding:0 8px}
.wbig .q{border-bottom:4px solid var(--k-pre);color:var(--text);padding:0 10px}
.wbig .plus{color:var(--text);font-weight:600;margin:0 .25em}
.wtarget{font-size:clamp(19px,4.6vw,21px);font-weight:700;color:var(--ink);margin:0 0 12px}
.wlbl{display:block;font-size:13px;font-weight:700;color:var(--terracotta)}
.wlbl.wimp{margin:16px 0 0}
.wmachines{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}
.wmachine{background:var(--card);border:1.5px solid var(--line2);border-radius:14px;padding:14px 12px;text-align:left;cursor:pointer;font-family:var(--sans);color:var(--text);transition:border-color .12s,background-color .12s,opacity .12s}
.wmachine b{display:block;font-size:18px;color:var(--ink)}
.wmachine span{font-size:14px}
.wmachine:hover:not(:disabled){border-color:var(--morpheus)}
.wmachine.tried{opacity:.55}
.wmachine.good{background:var(--k-root-bg);border-color:var(--k-root)}
.wmachine.hint{border-color:var(--morpheus);border-style:dashed}
.wmachine:disabled{cursor:default}
.wreasons{margin:14px 0 0;padding:0;list-style:none}
.wreasons li{margin:0 0 8px;font-size:16px}
.wreasons b{color:var(--ink)}
.wfb{min-height:1.7em;margin:16px 0 0;font-size:18px;font-weight:600;color:var(--ink)}
.wfb.ok{color:var(--ok)}
.wfb.try{color:var(--terracotta)}
.wcontrols{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.wcount{margin:14px 0 0;font-size:14px;color:var(--text)}
.wdone h3{font-family:var(--display);font-size:22px;color:var(--ink);margin:10px 0 4px}
.wdone p{margin:0 0 14px;font-size:18px;color:var(--ink)}
.wfoot{text-align:center;font-size:14px;color:var(--text);margin-top:22px}

/* ============== Sentence Builder (reuses the workshop card, tiles and feedback) ============== */
.wtile.placed{background:var(--k-root-bg);border-color:var(--k-root)}
.wtile.settled{background:var(--ok-bg);border-color:var(--ok)}
.wkey i.who{background:var(--k-suf-bg);border-color:var(--k-suf)}
.wkey i.doing{background:var(--k-root-bg);border-color:var(--k-root)}
#sbcard .wphead img{border-color:var(--colour)}
.sb-groups{display:flex;flex-direction:column;gap:10px;margin:8px 0 16px}
.sb-group{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.sb-gl{font-size:13px;font-weight:700;color:var(--text);min-width:96px}
.sb-tab{display:flex;align-items:center;gap:8px;padding:7px 13px;font-size:14px}
.sb-dot{width:9px;height:9px;border-radius:50%;background:var(--colour)}
.sb-line{display:flex;flex-wrap:wrap;gap:10px;min-height:76px;align-items:center;padding:14px;border-radius:16px;border:2px dashed var(--line2);margin-bottom:16px}
.sb-ph{color:var(--text);font-size:16px}
.sb-toks{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.sb-tok{background:var(--card);border:1.5px solid var(--line2);border-radius:10px;padding:8px 12px;font-family:var(--sans);font-size:clamp(19px,4.6vw,22px);font-weight:700;color:var(--ink);cursor:pointer;letter-spacing:.02em;transition:transform .1s,border-color .12s,background-color .12s}
.sb-tok:hover:not(:disabled){border-color:var(--k-root)}
.sb-tok:active:not(:disabled){transform:scale(.95)}
.sb-tok:disabled{cursor:default}
.sb-tok.sel,.sb-tok.open,.sb-tok.doing{background:var(--k-root-bg);border-color:var(--k-root)}
.sb-tok.fixed{background:var(--ok-bg);border-color:var(--ok)}
.sb-tok.who{background:var(--k-suf-bg);border-color:var(--k-suf)}
.sb-cutline{display:flex;flex-wrap:wrap;gap:8px 6px;margin-bottom:16px}
.sb-chunk{background:none;border:1.5px solid transparent;border-radius:10px;padding:6px 8px;cursor:pointer;font-family:var(--sans);font-size:clamp(20px,5vw,24px);font-weight:700;color:var(--ink);transition:color .12s,border-color .12s}
.sb-chunk:hover{border-color:var(--line2)}
.sb-chunk.struck{color:var(--text);text-decoration:line-through;text-decoration-thickness:3px;text-decoration-color:var(--terracotta)}
.sb-chunk.needed{border-color:var(--terracotta);border-style:dashed}
.sb-left{background:var(--card2);border-radius:14px;padding:12px 14px;margin-bottom:6px}
.sb-lefttext{margin:2px 0 0;font-size:19px;font-weight:600;color:var(--ink)}
.sb-scene{font-size:clamp(54px,15vw,84px);text-align:center;letter-spacing:.2em;line-height:1.2;margin:4px 0 10px}
.sb-built{font-size:clamp(20px,5vw,24px);font-weight:700;color:var(--ink);text-align:center;margin:0 0 18px;line-height:1.5}
.sb-built.sb-built-left{text-align:left}
.sb-gap,.sb-blank{display:inline-block;min-width:3.5em;border-bottom:3px solid var(--k-root);color:var(--text);font-weight:600;font-size:.72em;padding:0 4px}
.sb-blank{min-width:2.5em;text-align:center}
.sb-fill{background:var(--ok-bg);border-radius:8px;padding:0 6px}
.sb-bank{margin-bottom:14px}
.sb-bank .wlbl{margin-bottom:6px}
.sb-step{border:1.5px dashed var(--line2);border-radius:16px;padding:14px;margin-top:10px}
.sb-step .wlbl{margin-bottom:8px}
.sb-skip{margin-top:12px}
.sb-was{font-size:18px;color:var(--text);margin:2px 0 14px;font-weight:600}
.sb-given{display:grid;gap:8px;margin-bottom:14px}
.sb-given p{margin:0;background:var(--card2);border-radius:12px;padding:10px 14px;font-size:19px;font-weight:700;color:var(--ink)}
.sb-idea{margin:0 0 8px;font-size:16px}
.sb-idea .wlbl{display:inline}
.sb-versions{display:grid;gap:10px}
.sb-version{text-align:left;background:var(--card);border:1.5px solid var(--line2);border-radius:14px;padding:14px 16px;font-family:var(--sans);font-size:18px;font-weight:600;color:var(--ink);cursor:pointer;transition:border-color .12s,background-color .12s,opacity .12s}
.sb-version:hover:not(:disabled){border-color:var(--k-root)}
.sb-version.tried{opacity:.55}
.sb-version.right{background:var(--ok-bg);border-color:var(--ok);opacity:1}
.sb-version:disabled{cursor:default}
#sview .btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
@media (max-width:560px){.sb-gl{min-width:100%}}

/* tiers: Apprentice / Adventurer / Hero (colour set via data-tier, CSP-safe) */
[data-tier="Apprentice"]{--tier:var(--k-pre)}
[data-tier="Adventurer"]{--tier:var(--k-suf)}
[data-tier="Hero"]{--tier:var(--terracotta)}
.tier-pill{display:inline-flex;align-items:center;font-family:var(--sans);font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;line-height:1.5;color:var(--tier);border:1px solid color-mix(in srgb,var(--tier) 45%,transparent);background:color-mix(in srgb,var(--tier) 10%,transparent);border-radius:99px;padding:1px 8px;white-space:nowrap}
.tier-pill.later{opacity:.8;border-style:dashed}
.wtab .tier-pill,.sb-gl .tier-pill{margin-left:6px;vertical-align:1px}
.sb-gl .tier-pill{margin-left:0}
.wwho .tier-pill{margin-left:4px;vertical-align:1px}
.wtab[aria-current="true"] .tier-pill{color:#2a1d05;border-color:rgba(42,29,5,.35);background:rgba(255,255,255,.35)}

/* rank, inside the navy welcome panel */
.rank{display:flex;align-items:center;flex-wrap:wrap;gap:10px 14px;margin-top:12px}
.rank-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:11px;background:rgba(255,255,255,.1);border:1px solid rgba(240,205,140,.3);font-weight:800;font-size:15px;color:var(--on-navy)}
.rank-icon{font-size:18px}
.rank-next{display:flex;flex-direction:column;gap:6px;min-width:220px;flex:1;max-width:440px;font-size:13.5px;color:var(--on-navy-muted);line-height:1.4}
.rank-next progress{appearance:none;-webkit-appearance:none;width:100%;height:7px;border:0;border-radius:99px;background:rgba(255,255,255,.14);overflow:hidden}
.rank-next progress::-webkit-progress-bar{background:rgba(255,255,255,.14);border-radius:99px}
.rank-next progress::-webkit-progress-value{background:var(--gold-light);border-radius:99px}
.rank-next progress::-moz-progress-bar{background:var(--gold-light);border-radius:99px}

/* school path or by teacher */
.views{display:inline-flex;gap:4px;padding:4px;margin:0 0 14px;border-radius:12px;background:var(--card2);border:1px solid var(--line)}
.view-btn{appearance:none;font:inherit;font-size:14.5px;font-weight:700;padding:8px 16px;border-radius:9px;border:0;background:transparent;color:var(--text);cursor:pointer}
.view-btn[aria-pressed="true"]{background:var(--navy);color:var(--on-navy)}
.view-btn:focus-visible{outline:3px solid var(--gold);outline-offset:2px}

/* filters: status and tier */
.filters{gap:8px 16px}
.filter-group{display:flex;gap:8px;flex-wrap:wrap}
.filters .tier-chip[data-tier][aria-pressed="true"]{background:var(--tier);border-color:var(--tier);color:var(--card)}
.filters .tier-chip[data-tier]{border-color:color-mix(in srgb,var(--tier) 45%,var(--line2))}

/* lesson list extras */
.stage-title{font-family:var(--display);font-weight:700;font-size:14px;letter-spacing:.08em;text-transform:uppercase;color:var(--text);margin:18px 2px 8px}
.row-meta{display:flex;align-items:center;gap:8px;margin-top:4px;flex-wrap:wrap}
.row-teacher{font-size:12px;font-weight:800;color:var(--colour)}
.next-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.next-up .tier-pill{color:var(--gold-light);border-color:rgba(240,205,140,.4);background:rgba(255,255,255,.08)}

/* activity shortcuts show the level they open at */
.explore-card .x-level{display:flex;flex-direction:column;align-items:flex-start;gap:4px;margin-top:6px;font-size:13px;font-weight:700;color:var(--ink);line-height:1.4}

/* Forge level buttons take their tier colour when chosen */
.flevel[data-tier][aria-pressed="true"]{border-color:var(--tier);color:var(--tier);background:color-mix(in srgb,var(--tier) 10%,var(--card))}

@media (max-width:520px){.views{display:flex}.view-btn{flex:1}.rank-next{min-width:100%}}

/* Build task: the Forge button must not look like a word piece */
.forge-row{flex-direction:column;align-items:stretch;gap:8px;margin-top:18px}
.forge-hint{margin:0;font-size:15px;color:var(--text);text-align:center}
.btn-forge{margin-top:0;font-size:19px;padding:16px 20px;background:var(--ink);color:var(--card);border:0;box-shadow:0 8px 20px -10px rgba(18,48,85,.6);opacity:.5}
.btn-forge:hover{background:var(--ink)}
.btn-forge:focus-visible{outline:3px solid var(--gold);outline-offset:3px}
.btn-forge.ready{opacity:1;animation:forgeGlow 1.6s ease-in-out infinite}
@keyframes forgeGlow{0%,100%{transform:scale(1)}50%{transform:scale(1.03)}}
@media (prefers-reduced-motion:reduce){.btn-forge.ready{animation:none}}