/* CCG student lesson pages. Layout: thin brand bar; steps panel on the left (one step at a time),
   CCG Blocks filling the rest. Below 900px the two become tabs. "page" lessons are a single column. */
:root{
  --bg:#FAF6EF; --surface:#FFFDF8; --ink:#241A1D; --slate:#5F5358; --line:#EAE0D0;
  --brand:#6E1E2B; --brand-deep:#4E1520; --brand-ink:#6E1E2B; --gold:#B98A3C; --gold-soft:#F3E8D3;
  --on-brand:#FFFDF8; --on-brand-soft:#EAD8CC; --good:#2E7D4F; --bad:#B3261E; --none:#8A7F83;
  --f-display:"Cormorant Garamond", Georgia, serif; --f-body:"Montserrat","Segoe UI",system-ui,sans-serif;
  --panel:340px; /* CCG Blocks needs about 1024px: 340 + 1024 fits a 1366px laptop */
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#181113; --surface:#22181B; --ink:#F2E9E3; --slate:#BBAEB2; --line:#3A2C30; --brand:#5A1823; --brand-deep:#3E0F18;
  --brand-ink:#E59AA6; --gold:#D4AF6A; --gold-soft:#3A2F1E; --good:#6CC08F; --bad:#F08A80; --none:#9C9195; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#181113; --surface:#22181B; --ink:#F2E9E3; --slate:#BBAEB2; --line:#3A2C30; --brand:#5A1823; --brand-deep:#3E0F18;
  --brand-ink:#E59AA6; --gold:#D4AF6A; --gold-soft:#3A2F1E; --good:#6CC08F; --bad:#F08A80; --none:#9C9195; color-scheme:dark}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{height:100%;margin:0}
body{background:var(--bg);color:var(--ink);font:15px/1.55 var(--f-body);display:flex;flex-direction:column}
a{color:var(--brand-ink)}
button{font:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px}

/* top bar */
.bar{background:var(--brand);color:var(--on-brand);display:flex;align-items:center;gap:14px;
  padding:8px max(14px,env(safe-area-inset-right,0px)) 8px max(14px,env(safe-area-inset-left,0px));min-height:52px;flex-wrap:wrap}
.bar a{color:var(--on-brand);text-decoration:none}
.bar .home{font-family:var(--f-display);font-weight:700;font-size:1.15rem;white-space:nowrap}
.bar .crumb{font-size:.8rem;color:var(--on-brand-soft);white-space:nowrap}
.bar h1{font-size:1rem;font-weight:600;margin:0;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bar .tools{display:flex;gap:8px;align-items:center}
.bar .tools a,.bar .tools button{border:1px solid rgba(255,255,255,.35);background:transparent;color:var(--on-brand);border-radius:4px;padding:5px 10px;font-size:.78rem;font-weight:600}
.bar .ver{font-family:ui-monospace,Menlo,monospace;font-size:.7rem;color:var(--on-brand-soft)}

/* split layout */
.split{flex:1;min-height:0;display:grid;grid-template-columns:var(--panel) 1fr}
body.min .split{grid-template-columns:44px 1fr}
.panel{min-width:0;min-height:0;display:flex;flex-direction:column;border-right:1px solid var(--line);background:var(--surface)}
.editor{min-width:0;min-height:0;display:flex}
.editor iframe{flex:1;width:100%;height:100%;border:0;background:#fff}
body.min .panel > :not(.minbar){display:none}
.minbar{display:none}
body.min .minbar{display:flex;flex-direction:column;align-items:center;gap:10px;padding-top:10px}
.minbar button{border:0;background:var(--gold-soft);color:var(--brand-ink);border-radius:6px;width:34px;height:34px;font-weight:700}
.minbar span{writing-mode:vertical-rl;font-size:.75rem;color:var(--slate)}

/* tabs on narrow screens */
.tabs{display:none}
@media (max-width:899px){
  .split{grid-template-columns:1fr}
  .tabs{display:flex;background:var(--brand-deep)}
  .tabs button{flex:1;border:0;background:transparent;color:var(--on-brand-soft);padding:10px;font-weight:600;border-bottom:3px solid transparent}
  .tabs button[aria-selected="true"]{color:var(--on-brand);border-bottom-color:#D4AF6A}
  body[data-tab="steps"] .editor{display:none}
  body[data-tab="editor"] .panel{display:none}
  .collapse{display:none}
}

/* panel content */
.phead{padding:14px 18px 10px;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:8px}
.phead .row1{display:flex;justify-content:space-between;align-items:center;gap:8px}
.count{font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;font-weight:600;color:var(--gold)}
.collapse{border:1px solid var(--line);background:transparent;color:var(--slate);border-radius:4px;font-size:.75rem;padding:3px 8px}
.dots{display:flex;flex-wrap:wrap;gap:5px}
.dots button{width:22px;height:22px;border-radius:50%;border:1.5px solid var(--line);background:var(--bg);color:var(--slate);font-size:.68rem;font-weight:700;padding:0}
.dots button.done{background:var(--good);border-color:var(--good);color:#fff}
.dots button[aria-current="step"]{border-color:var(--brand-ink);color:var(--brand-ink);box-shadow:0 0 0 2px var(--gold-soft)}
.dots button.done[aria-current="step"]{color:#fff}
.pbody{flex:1;min-height:0;overflow-y:auto;padding:16px 18px 24px;display:flex;flex-direction:column;gap:14px}
.pbody > *,.pbody > div > *{flex-shrink:0}
.pbody h2{font-family:var(--f-display);font-size:1.6rem;line-height:1.1;margin:0;color:var(--brand-ink);text-wrap:balance}
.pbody p{margin:0}
.pbody ul,.pbody ol{margin:0;padding-left:20px}
.pbody li{margin:.25rem 0}
.goal{background:var(--gold-soft);border-radius:6px;padding:10px 12px;font-size:.88rem}
.goal b{display:block;font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--brand-ink)}
.checks{display:flex;flex-direction:column;gap:6px;border-top:1px solid var(--line);padding-top:10px}
.checks h3,.answer h3{margin:0;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--slate)}
.checks label{display:grid;grid-template-columns:20px 1fr;gap:8px;align-items:start;cursor:pointer;font-size:.9rem}
.checks input{width:16px;height:16px;margin:3px 0 0;accent-color:var(--brand)}
details.hint{border:1px solid var(--line);border-radius:6px;padding:8px 12px;background:var(--bg)}
details.hint summary{cursor:pointer;font-weight:600;font-size:.88rem;color:var(--brand-ink)}
details.hint p,details.hint ul{margin-top:6px;font-size:.88rem}
.answer{display:flex;flex-direction:column;gap:6px}
.answer label{font-weight:600;font-size:.9rem}
textarea,input[type=text],input[type=number]{font:inherit;font-size:.9rem;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:4px;padding:7px 9px;width:100%}
textarea{min-height:70px;resize:vertical}
.btn{display:inline-flex;align-items:center;gap:6px;border-radius:6px;padding:9px 14px;font-weight:600;font-size:.88rem;text-decoration:none;border:1.5px solid var(--brand-ink);color:var(--brand-ink);background:transparent;align-self:flex-start}
.btn.primary{background:var(--brand);border-color:var(--brand);color:var(--on-brand)}
.pnav{display:flex;justify-content:space-between;gap:8px;padding:10px 18px calc(10px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--line);background:var(--surface)}
.pnav button{border-radius:6px;padding:9px 16px;font-weight:600;border:1.5px solid var(--brand-ink);background:transparent;color:var(--brand-ink)}
.pnav button.next{background:var(--brand);border-color:var(--brand);color:var(--on-brand)}
.pnav button:disabled{opacity:.4;cursor:default}

/* blocks */
.script{background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:10px 12px;overflow-x:auto}
.script h4{margin:0 0 6px;font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--slate)}
.blk{display:inline-block;font-size:.76rem;font-weight:600;color:#fff;padding:5px 10px;border-radius:4px;margin:1px 0;white-space:nowrap}
.blk.hat{border-radius:14px 14px 4px 4px;padding-top:7px}
.row{display:block}
.blk .in{display:inline-block;background:#fff;color:#3b3b3b;border-radius:10px;padding:0 7px;margin:0 2px;font-weight:500}
.blk .rep{display:inline-block;background:rgba(0,0,0,.18);border-radius:10px;padding:0 7px;margin:0 2px}
.c-events{background:#E6A800;color:#1d1600}.c-control{background:#E8930B;color:#1d1200}
.c-motion{background:#4C97FF}.c-looks{background:#8A5CE6}.c-sound{background:#B952B9}
.c-sensing{background:#3D9CC2}.c-operators{background:#3FA142}.c-variables{background:#E57A0F;color:#1d0f00}
.c-video,.c-tm,.c-tts{background:#0B9E77}

/* tables and tools */
.tw{overflow-x:auto;border:1px solid var(--line);border-radius:6px;background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:.85rem}
th,td{text-align:left;padding:7px 10px;border-bottom:1px solid var(--line);vertical-align:middle}
th{font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--slate);font-weight:600;background:var(--bg)}
tr:last-child td{border-bottom:0}
.out{font-weight:600;color:var(--brand-ink)}
.small{font-size:.8rem}.muted{color:var(--slate)}

/* single-column lessons */
.page{flex:1;overflow-y:auto}
.page .wrap{max-width:860px;margin:0 auto;padding:24px max(16px,env(safe-area-inset-left,0px)) 60px;display:flex;flex-direction:column;gap:18px}
.page .stepcard{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:18px;display:flex;flex-direction:column;gap:12px}

/* evaluation grid */
.dotsrow{display:flex;gap:4px}
.dot{width:28px;height:28px;padding:0;border-radius:50%;border:1.5px solid var(--line);background:var(--bg);color:var(--ink);font-size:.8rem;font-weight:700;display:inline-flex;align-items:center;justify-content:center}
.dot[data-v="c"]{background:var(--good);border-color:var(--good);color:#fff}
.dot[data-v="w"]{background:var(--bad);border-color:var(--bad);color:#fff}
.dot[data-v="n"]{background:var(--none);border-color:var(--none);color:#fff}
.legend{display:flex;flex-wrap:wrap;gap:12px;font-size:.8rem;color:var(--slate)}
.legend span{display:inline-flex;align-items:center;gap:6px}.legend i{width:13px;height:13px;border-radius:50%;display:inline-block}
.seg{display:flex;flex-wrap:wrap;gap:4px}
.seg button{border:1px solid var(--line);background:transparent;color:var(--slate);border-radius:4px;padding:5px 9px;font-size:.8rem}
.seg button[aria-pressed="true"]{background:var(--brand);border-color:var(--brand);color:var(--on-brand)}
.chart{position:relative}.chart svg{width:100%;height:auto;display:block}
.tip{position:absolute;pointer-events:none;background:var(--ink);color:var(--bg);font-size:.75rem;padding:5px 8px;border-radius:4px;white-space:nowrap;transform:translate(-50%,-110%)}
.summary{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px}
.summary div{border-top:2px solid var(--gold);padding-top:6px;font-size:.84rem;min-width:0}
.summary b{display:block;font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--slate)}

/* editor overlay for single-column lessons */
.edwrap{position:fixed;inset:0;z-index:50;background:var(--brand-deep);display:flex;flex-direction:column}
.edbar{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;color:var(--on-brand)}
.edbar button{border:0;background:#D4AF6A;color:#241A1D;border-radius:4px;padding:6px 12px;font-weight:600}
.edwrap iframe{flex:1;border:0;background:#fff}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* ================= age bands =================
   ks1 Years 1-2 · ks2 Years 3-6 · ks3 Years 7-9 (the base styles above) · ks45 Years 10-13 */
body[data-band="ks1"]{--f-body:"Andika","Comic Sans MS",system-ui,sans-serif;--f-display:"Andika","Comic Sans MS",sans-serif;
  --bg:#FFF8EC;--surface:#FFFFFF;--ink:#2A1E14;--slate:#6B5A4A;--line:#F1DFC2;--brand:#C2410C;--brand-deep:#9A330A;--brand-ink:#B23A0A;
  --gold:#E0A100;--gold-soft:#FFEDB8;font-size:20px;line-height:1.5}
body[data-band="ks2"]{--f-body:"Lexend","Segoe UI",system-ui,sans-serif;--f-display:"Lexend","Segoe UI",sans-serif;
  --bg:#F3F9F9;--surface:#FFFFFF;--ink:#13282C;--slate:#4E6569;--line:#D5E6E7;--brand:#0F6E7A;--brand-deep:#0A515A;--brand-ink:#0D6470;
  --gold:#D9892B;--gold-soft:#FDEBD3;font-size:16.5px}
body[data-band="ks45"]{--f-body:"IBM Plex Sans","Segoe UI",system-ui,sans-serif;--f-display:"Source Serif 4",Georgia,serif;
  --bg:#F6F6F3;--surface:#FFFFFF;--ink:#1C2230;--slate:#555D6E;--line:#DEDFE3;--brand:#26324A;--brand-deep:#1A2336;--brand-ink:#26324A;
  --gold:#8C6D3F;--gold-soft:#EFEADF;font-size:15px}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) body[data-band="ks1"]{--bg:#1D1612;--surface:#272019;--ink:#F7EDE4;--slate:#C9B8A6;--line:#3D3127;--brand:#9A330A;--brand-deep:#6E2407;--brand-ink:#FF9B70;--gold:#F5C542;--gold-soft:#3A2F14}
  :root:not([data-theme="light"]) body[data-band="ks2"]{--bg:#0F1A1C;--surface:#152427;--ink:#E4F1F2;--slate:#9DB8BB;--line:#25393C;--brand:#0A515A;--brand-deep:#073A41;--brand-ink:#6FD0DB;--gold:#F0AE5C;--gold-soft:#3A2C18}
  :root:not([data-theme="light"]) body[data-band="ks45"]{--bg:#14171D;--surface:#1B1F27;--ink:#E7E9EE;--slate:#A6ADBB;--line:#2C313C;--brand:#26324A;--brand-deep:#1A2336;--brand-ink:#A9B8D9;--gold:#C9A36B;--gold-soft:#2B2720}}
:root[data-theme="dark"] body[data-band="ks1"]{--bg:#1D1612;--surface:#272019;--ink:#F7EDE4;--slate:#C9B8A6;--line:#3D3127;--brand:#9A330A;--brand-deep:#6E2407;--brand-ink:#FF9B70;--gold:#F5C542;--gold-soft:#3A2F14}
:root[data-theme="dark"] body[data-band="ks2"]{--bg:#0F1A1C;--surface:#152427;--ink:#E4F1F2;--slate:#9DB8BB;--line:#25393C;--brand:#0A515A;--brand-deep:#073A41;--brand-ink:#6FD0DB;--gold:#F0AE5C;--gold-soft:#3A2C18}
:root[data-theme="dark"] body[data-band="ks45"]{--bg:#14171D;--surface:#1B1F27;--ink:#E7E9EE;--slate:#A6ADBB;--line:#2C313C;--brand:#26324A;--brand-deep:#1A2336;--brand-ink:#A9B8D9;--gold:#C9A36B;--gold-soft:#2B2720}

/* Years 1-2: big, round, one thing at a time */
body[data-band="ks1"] .pbody h2{font-size:1.7rem;font-weight:700}
body[data-band="ks1"] .dots button{width:34px;height:34px;font-size:.85rem}
body[data-band="ks1"] .pnav button,body[data-band="ks1"] .btn{min-height:56px;padding:12px 22px;border-radius:16px;font-size:1.05rem}
body[data-band="ks1"] .goal,body[data-band="ks1"] details.hint,body[data-band="ks1"] .script{border-radius:16px}
body[data-band="ks1"] .checks label{display:flex;align-items:center;gap:12px;border:3px solid var(--line);border-radius:16px;padding:14px 16px;background:var(--surface)}
body[data-band="ks1"] .checks input{width:28px;height:28px;margin:0}
body[data-band="ks1"] .checks label:has(input:checked){border-color:var(--good);background:color-mix(in srgb,var(--good) 12%,var(--surface))}
body[data-band="ks1"] .checks h3{font-size:.9rem}
/* Years 3-6: friendly and rounded */
body[data-band="ks2"] .pbody h2{font-size:1.45rem;font-weight:600}
body[data-band="ks2"] .pnav button,body[data-band="ks2"] .btn{border-radius:10px}
body[data-band="ks2"] .goal,body[data-band="ks2"] details.hint,body[data-band="ks2"] .script{border-radius:10px}
body[data-band="ks2"] .checks label{border:2px solid var(--line);border-radius:10px;padding:8px 10px;background:var(--surface)}
body[data-band="ks2"] .checks label:has(input:checked){border-color:var(--good)}
/* Years 10-13: restrained, document-like */
body[data-band="ks45"] .pbody h2{font-size:1.5rem;font-weight:600}
body[data-band="ks45"] .goal,body[data-band="ks45"] details.hint,body[data-band="ks45"] .script,body[data-band="ks45"] .pnav button,body[data-band="ks45"] .btn{border-radius:2px}
body[data-band="ks45"] .goal{background:transparent;border-left:3px solid var(--gold);border-radius:0;padding:4px 0 4px 12px}
body[data-band="ks45"] .stepsec{border-top:1px solid var(--line);padding-top:18px;display:flex;flex-direction:column;gap:12px}
body[data-band="ks45"] .stepsec:first-child{border-top:0;padding-top:0}
body[data-band="ks45"] .stepnum{font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--gold);font-weight:600}

/* read aloud */
.say{display:inline-flex;align-items:center;gap:8px;align-self:flex-start;border:2px solid var(--brand-ink);color:var(--brand-ink);background:transparent;border-radius:999px;padding:6px 14px;font-weight:600}
.say[aria-pressed="true"]{background:var(--brand-ink);color:var(--surface)}
.say svg{width:18px;height:18px}
body[data-band="ks1"] .say{font-size:1rem;padding:10px 18px}

/* staff preview switch */
.bandpick{font:inherit;font-size:.75rem;background:transparent;color:var(--on-brand);border:1px solid rgba(255,255,255,.35);border-radius:4px;padding:4px 6px}
.bandpick option{color:#222}