:root{
  --bg:#f7f5f0; --panel:#ffffff; --ink:#1f2328; --muted:#5d636b; --line:#e3dfd6;
  --accent:#c2410c; --accent-soft:#fde7d9; --blue:#1d4ed8; --blue-soft:#dbe6fe;
  --green:#15803d; --green-soft:#dcf3e3; --red:#b91c1c; --red-soft:#fde2e2;
  --yellow:#a16207; --yellow-soft:#fdf1c7; --purple:#6d28d9; --purple-soft:#ede4fe;
  --shadow:0 1px 3px rgba(0,0,0,.06),0 4px 14px rgba(0,0,0,.05);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#15171a; --panel:#1e2125; --ink:#e8e6e1; --muted:#a2a8b0; --line:#30343a;
    --accent:#fb923c; --accent-soft:#3a2416; --blue:#93b4fd; --blue-soft:#1b2640;
    --green:#6ee7a0; --green-soft:#16301f; --red:#fca5a5; --red-soft:#3a1c1c;
    --yellow:#fcd34d; --yellow-soft:#352b12; --purple:#c4b5fd; --purple-soft:#2a2140;
    --shadow:none;
  }
}
:root[data-theme="dark"]{
  --bg:#15171a; --panel:#1e2125; --ink:#e8e6e1; --muted:#a2a8b0; --line:#30343a;
  --accent:#fb923c; --accent-soft:#3a2416; --blue:#93b4fd; --blue-soft:#1b2640;
  --green:#6ee7a0; --green-soft:#16301f; --red:#fca5a5; --red-soft:#3a1c1c;
  --yellow:#fcd34d; --yellow-soft:#352b12; --purple:#c4b5fd; --purple-soft:#2a2140;
  --shadow:none;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--accent)}
.layout{display:grid;grid-template-columns:280px 1fr;min-height:100vh}
aside{position:sticky;top:0;height:100vh;overflow:auto;background:var(--panel);border-right:1px solid var(--line);padding:20px 16px}
aside h1{font-size:18px;margin:0 0 2px}
aside .sub{color:var(--muted);font-size:13px;margin-bottom:14px}
.search{width:100%;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);font:inherit;font-size:14px}
nav .group{margin-top:16px;font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700}
nav a{display:flex;align-items:center;gap:8px;padding:5px 8px;border-radius:6px;color:var(--ink);text-decoration:none;font-size:14px}
nav a:hover{background:var(--accent-soft)}
nav a .dot{width:9px;height:9px;border-radius:50%;border:2px solid var(--line);flex:none}
nav a.done .dot{background:var(--green);border-color:var(--green)}
.progress{margin-top:14px;font-size:13px;color:var(--muted)}
.bar{height:6px;background:var(--line);border-radius:4px;overflow:hidden;margin-top:4px}
.bar>i{display:block;height:100%;background:var(--green);width:0;transition:width .3s}
.tools{display:flex;gap:6px;margin-top:14px;flex-wrap:wrap}
button,.btn{font:inherit;font-size:14px;padding:7px 12px;border-radius:8px;border:1px solid var(--line);background:var(--panel);color:var(--ink);cursor:pointer}
button:hover{border-color:var(--accent)}
button.primary{background:var(--accent);border-color:var(--accent);color:#fff}
main{padding:28px 40px 80px;max-width:1000px}
.menu-btn{display:none}
header.hero{background:linear-gradient(135deg,var(--accent-soft),var(--blue-soft));border-radius:16px;padding:24px 26px;margin-bottom:28px}
header.hero h2{margin:0 0 6px;font-size:26px}
header.hero p{margin:0;color:var(--muted)}
section.topic{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:22px 26px;margin-bottom:22px;box-shadow:var(--shadow)}
section.topic>h3{margin:0 0 4px;font-size:21px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.tag{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;padding:2px 8px;border-radius:20px;background:var(--accent-soft);color:var(--accent)}
.unit-title{font-size:22px;margin:38px 0 14px;padding-bottom:6px;border-bottom:3px solid var(--accent)}
h4{margin:20px 0 6px;font-size:17px}
.mark{display:flex;justify-content:flex-end;margin-top:14px}
.mark label{font-size:14px;color:var(--muted);cursor:pointer;display:flex;gap:6px;align-items:center}
.box{border-radius:10px;padding:12px 16px;margin:14px 0;border-left:4px solid}
.box.def{background:var(--blue-soft);border-color:var(--blue)}
.box.key{background:var(--yellow-soft);border-color:var(--yellow)}
.box.warn{background:var(--red-soft);border-color:var(--red)}
.box.ok{background:var(--green-soft);border-color:var(--green)}
.box.add{background:var(--purple-soft);border-color:var(--purple)}
.box b.t{display:block;font-size:13px;text-transform:uppercase;letter-spacing:.05em;margin-bottom:2px}
.note{font-size:13px;color:var(--muted)}
.added{font-size:11px;font-weight:700;color:var(--purple);background:var(--purple-soft);padding:1px 6px;border-radius:10px;margin-left:4px;vertical-align:middle;white-space:nowrap}
table{width:100%;border-collapse:collapse;margin:12px 0;font-size:15px}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
th{background:var(--bg)}
.tbl-wrap{overflow-x:auto}
.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin:12px 0}
.card{border:1px solid var(--line);border-radius:10px;padding:12px 14px;background:var(--bg)}
.card h5{margin:0 0 4px;font-size:15px}
.card p,.card ul{margin:4px 0;font-size:14px}
.card ul{padding-left:18px}
/* Esquemas */
.flow{display:flex;flex-wrap:wrap;align-items:stretch;gap:6px;margin:14px 0}
.flow .step{flex:1 1 120px;background:var(--accent-soft);border:1px solid var(--accent);border-radius:10px;padding:10px;text-align:center;font-size:14px;position:relative}
.flow .step b{display:block;font-size:12px;color:var(--accent)}
.flow .arrow{align-self:center;font-size:20px;color:var(--accent)}
.flow.blue .step{background:var(--blue-soft);border-color:var(--blue)}
.flow.blue .step b,.flow.blue .arrow{color:var(--blue)}
.tree{margin:14px 0;font-size:14px}
.tree .root{display:inline-block;background:var(--accent);color:#fff;padding:8px 16px;border-radius:10px;font-weight:700}
.tree ul{list-style:none;margin:0;padding-left:22px;border-left:2px solid var(--line)}
.tree li{position:relative;padding:5px 0 5px 14px}
.tree li::before{content:"";position:absolute;left:-2px;top:17px;width:12px;border-top:2px solid var(--line)}
.tree .n{display:inline-block;background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:3px 10px}
.tree .n.h{background:var(--blue-soft);border-color:var(--blue);font-weight:600}
.mindmap{display:grid;grid-template-columns:1fr auto 1fr;gap:10px;align-items:center;margin:16px 0}
.mindmap .center{background:var(--accent);color:#fff;font-weight:700;border-radius:50%;width:150px;height:150px;display:flex;align-items:center;justify-content:center;text-align:center;padding:12px}
.mindmap .side{display:flex;flex-direction:column;gap:8px}
.mindmap .side div{background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:7px 10px;font-size:14px}
.mindmap .side.l div{text-align:right;border-right:4px solid var(--accent)}
.mindmap .side.r div{border-left:4px solid var(--accent)}
svg text{font-family:system-ui,sans-serif}
.thermo{max-width:520px;margin:10px auto;display:block}
.label-demo{max-width:340px;border:2px dashed var(--ink);border-radius:8px;padding:12px 14px;font-family:ui-monospace,Consolas,monospace;font-size:13px;background:var(--panel);margin:12px 0}
.label-demo div{display:flex;justify-content:space-between;gap:10px;border-bottom:1px dotted var(--line);padding:2px 0}
.boards{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
.boards div{flex:1 1 110px;border-radius:8px;padding:10px;color:#fff;font-size:13px;text-align:center;font-weight:600}
.orig{white-space:pre-wrap;font-family:ui-monospace,Consolas,monospace;font-size:14px;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:14px}
/* Escandallo calc */
.calc input{width:100%;padding:6px 8px;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--ink);font:inherit;font-size:14px}
.calc td{padding:5px}
.calc .res{font-weight:700;white-space:nowrap}
.kpis{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.kpis div{flex:1 1 150px;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px 12px}
.kpis small{display:block;color:var(--muted);font-size:12px}
.kpis b{font-size:20px}
/* Flashcards */
.fc-wrap{display:flex;flex-direction:column;align-items:center;gap:12px}
.flash{width:100%;max-width:560px;min-height:200px;perspective:1000px;cursor:pointer}
.flash-inner{position:relative;width:100%;min-height:200px;transition:transform .5s;transform-style:preserve-3d}
.flash.flip .flash-inner{transform:rotateY(180deg)}
.flash-face{position:absolute;inset:0;backface-visibility:hidden;border-radius:14px;padding:22px;display:flex;align-items:center;justify-content:center;text-align:center;font-size:18px;border:1px solid var(--line)}
.flash-face.front{background:var(--accent-soft);font-weight:600}
.flash-face.back{background:var(--blue-soft);transform:rotateY(180deg);font-size:16px}
.fc-ctrl{display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:center}
/* Quiz */
.q{border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin:10px 0;background:var(--bg)}
.q p{margin:0 0 8px;font-weight:600}
.q label{display:block;padding:5px 8px;border-radius:6px;cursor:pointer;font-size:15px}
.q label:hover{background:var(--panel)}
.q.correct{border-color:var(--green);background:var(--green-soft)}
.q.wrong{border-color:var(--red);background:var(--red-soft)}
.q .why{display:none;font-size:14px;margin-top:6px;color:var(--muted)}
.q.correct .why,.q.wrong .why{display:block}
.score{font-size:18px;font-weight:700;margin-top:10px}
.gloss dt{font-weight:700;margin-top:10px}
.gloss dd{margin:2px 0 0 0;color:var(--muted)}
.hidden-s{display:none!important}
@media (max-width:860px){
  .layout{grid-template-columns:1fr}
  aside{position:fixed;inset:0 auto 0 0;width:280px;z-index:20;transform:translateX(-100%);transition:transform .25s}
  aside.open{transform:none;box-shadow:0 0 0 100vmax rgba(0,0,0,.4)}
  main{padding:16px 16px 80px}
  .menu-btn{display:inline-block;position:sticky;top:8px;z-index:10;margin-bottom:10px}
  section.topic{padding:16px}
  .mindmap{grid-template-columns:1fr}
  .mindmap .center{margin:0 auto;width:120px;height:120px}
  .mindmap .side.l div{text-align:left;border-right:1px solid var(--line);border-left:4px solid var(--accent)}
  .flow .arrow{transform:rotate(90deg);width:100%;text-align:center}
  .flow .step{flex-basis:100%}
}
@media print{aside,.menu-btn,.mark,.tools{display:none}.layout{display:block}section.topic{break-inside:avoid}}
/* ---- Más color ---- */
section.topic:nth-of-type(6n+1){--cc:#f97316}section.topic:nth-of-type(6n+2){--cc:#0ea5e9}section.topic:nth-of-type(6n+3){--cc:#22c55e}
section.topic:nth-of-type(6n+4){--cc:#a855f7}section.topic:nth-of-type(6n+5){--cc:#ec4899}section.topic:nth-of-type(6n+6){--cc:#eab308}
section.topic{border-top:6px solid var(--cc);background:linear-gradient(180deg,color-mix(in srgb,var(--cc) 9%,var(--panel)) 0,var(--panel) 160px)}
section.topic>h3{color:color-mix(in srgb,var(--cc) 60%,var(--ink))}
.unit-title{border:0;color:#fff;padding:14px 20px;border-radius:14px;background:linear-gradient(135deg,#ea580c,#be123c)}
.unit-title:nth-of-type(2){background:linear-gradient(135deg,#0891b2,#1d4ed8)}
.unit-title:nth-of-type(3){background:linear-gradient(135deg,#c026d3,#4f46e5)}
header.hero{background:linear-gradient(135deg,#fed7aa,#fbcfe8 50%,#bfdbfe)}
:root[data-theme="dark"] header.hero{background:linear-gradient(135deg,#7c2d12,#831843 50%,#1e3a8a)}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) header.hero{background:linear-gradient(135deg,#7c2d12,#831843 50%,#1e3a8a)}}
.card{border-top:4px solid var(--cc);background:color-mix(in srgb,var(--cc) 7%,var(--panel))}
.cols>.card:nth-child(4n+1){--cc:#f97316}.cols>.card:nth-child(4n+2){--cc:#0ea5e9}.cols>.card:nth-child(4n+3){--cc:#22c55e}.cols>.card:nth-child(4n+4){--cc:#a855f7}
.flow .step:nth-child(1){--s:#f97316}.flow .step:nth-child(3){--s:#eab308}.flow .step:nth-child(5){--s:#22c55e}.flow .step:nth-child(7){--s:#0ea5e9}.flow .step:nth-child(9){--s:#6366f1}.flow .step:nth-child(11){--s:#d946ef}
.flow .step{background:color-mix(in srgb,var(--s,var(--accent)) 16%,var(--panel));border-color:var(--s,var(--accent))}
nav a:hover{background:color-mix(in srgb,#f97316 15%,var(--panel))}

/* ======== Portal de asignaturas ======== */
body[data-s]{--hue:20}
body[data-s=ppcc]{--hue:20}body[data-s=gqha]{--hue:145}body[data-s=angp]{--hue:215}
body[data-s=pec]{--hue:335}body[data-s=camp]{--hue:42}body[data-s=da]{--hue:265}
body[data-s]{--accent:hsl(var(--hue) 75% 38%);--accent-soft:hsl(var(--hue) 85% 92%)}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) body[data-s]{--accent:hsl(var(--hue) 85% 68%);--accent-soft:hsl(var(--hue) 40% 17%)}}
:root[data-theme="dark"] body[data-s]{--accent:hsl(var(--hue) 85% 68%);--accent-soft:hsl(var(--hue) 40% 17%)}
body[data-s] header.hero{background:linear-gradient(135deg,var(--accent-soft),color-mix(in srgb,var(--accent) 28%,var(--bg)))}
:root[data-theme="dark"] body[data-s] header.hero{background:linear-gradient(135deg,var(--accent-soft),color-mix(in srgb,var(--accent) 30%,var(--bg)))}
body[data-s] .unit-title{background:linear-gradient(135deg,var(--accent),color-mix(in srgb,var(--accent) 55%,#000))}
:root[data-theme="dark"] body[data-s] .unit-title{color:#111}
.subj-nav{display:grid;grid-template-columns:1fr 1fr;gap:4px;margin:10px 0 4px}
.subj-nav a{font-size:12px;font-weight:700;text-align:center;padding:5px 4px;border-radius:8px;border:1px solid var(--line);text-decoration:none;color:var(--ink);background:var(--bg)}
.subj-nav a.cur{background:var(--accent);border-color:var(--accent);color:#fff}
.subj-nav a:hover{border-color:var(--accent)}
.hub{max-width:1100px;margin:0 auto;padding:28px 22px 80px}
.hub h1{font-size:clamp(28px,4vw,44px);margin:0 0 6px}
.hub .lead{color:var(--muted);max-width:60ch}
.hub-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(310px,100%),1fr));gap:16px;margin:26px 0}
.scard{display:block;text-decoration:none;color:var(--ink);background:var(--panel);border:1px solid var(--line);border-top:8px solid var(--accent);border-radius:16px;padding:18px 20px;transition:transform .2s,box-shadow .2s;position:relative;overflow:hidden}
.scard::after{content:attr(data-emoji);position:absolute;right:-6px;bottom:-14px;font-size:92px;opacity:.12;transform:rotate(-10deg)}
.scard:hover{transform:translateY(-4px);box-shadow:0 12px 30px color-mix(in srgb,var(--accent) 25%,transparent)}
.scard .code{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.08em;color:#fff;background:var(--accent);padding:2px 10px;border-radius:20px}
.scard h3{margin:8px 0 4px;font-size:19px}
.scard p{margin:0 0 10px;color:var(--muted);font-size:14px}
.scard ul{margin:0 0 12px;padding-left:18px;font-size:13.5px;color:var(--muted)}
.scard .bar{margin-top:6px}.scard .bar>i{background:var(--accent)}
.scard small{color:var(--muted)}
.hub-tools{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0}
.hub-tools a,.hub-tools button{font:inherit;font-size:14px;padding:9px 14px;border-radius:10px;border:1px solid var(--line);background:var(--panel);color:var(--ink);text-decoration:none;cursor:pointer}
.hub-tools a.primary{background:linear-gradient(135deg,#f97316,#db2777);color:#fff;border:0;font-weight:700}
.hub-hero{background:linear-gradient(135deg,#fed7aa,#fbcfe8 50%,#bfdbfe);border-radius:20px;padding:28px 28px;margin-bottom:10px}
:root[data-theme="dark"] .hub-hero{background:linear-gradient(135deg,#7c2d12,#831843 50%,#1e3a8a)}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .hub-hero{background:linear-gradient(135deg,#7c2d12,#831843 50%,#1e3a8a)}}
.hub-total{font-size:14px;color:var(--muted)}
/* Chips, insignias, listas */
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0}
.chip{display:inline-block;padding:3px 11px;border-radius:20px;font-size:13px;border:1px solid var(--accent);background:var(--accent-soft);color:var(--ink)}
.chip.red{border-color:var(--red);background:var(--red-soft)}.chip.green{border-color:var(--green);background:var(--green-soft)}
.chip.blue{border-color:var(--blue);background:var(--blue-soft)}.chip.yellow{border-color:var(--yellow);background:var(--yellow-soft)}
.chip.purple{border-color:var(--purple);background:var(--purple-soft)}
.checklist{list-style:none;padding:0}
.checklist li{padding:4px 0}
.checklist label{cursor:pointer;display:flex;gap:8px;align-items:flex-start}
.checklist input:checked+span{text-decoration:line-through;color:var(--muted)}
.big-num{font-size:34px;font-weight:900;color:var(--accent);line-height:1}
.two{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:760px){.two{grid-template-columns:1fr}}
/* Escala de temperatura (bacterias) */
.tscale{display:flex;border-radius:12px;overflow:hidden;margin:14px 0 4px;font-size:12px;font-weight:700;color:#fff;text-align:center;min-height:56px}
.tscale div{display:flex;flex-direction:column;justify-content:center;padding:6px 4px}
.tlabels{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:10px}
/* Organigrama */
.org{display:flex;flex-direction:column;gap:10px;margin:14px 0}
.org .lvl{border-radius:14px;padding:10px 12px;border:2px solid var(--c,var(--accent));background:color-mix(in srgb,var(--c,var(--accent)) 10%,var(--panel))}
.org .lvl>b{display:block;font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:color-mix(in srgb,var(--c) 70%,var(--ink));margin-bottom:6px}
.org .row{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.org .pos{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:6px 10px;text-align:center;font-size:13px;min-width:120px;flex:0 1 150px}
.org .pos b{display:block;font-size:13px}.org .pos small{color:var(--muted);display:block;font-size:11.5px}
.org .arrow{text-align:center;color:var(--muted);line-height:1;font-size:18px}
/* Test grande con puntuación */
.qnum{color:var(--accent)}
details.sol{border:1px dashed var(--line);border-radius:10px;padding:6px 12px;margin:8px 0;background:var(--bg)}
details.sol summary{cursor:pointer;font-weight:600;color:var(--accent)}
.src{font-size:12px;color:var(--muted)}
.todo{border-left:4px solid var(--purple);background:var(--purple-soft);padding:8px 12px;border-radius:8px;font-size:14px}
.tbl-wrap td b{color:var(--accent)}