/* Aula en Voz Alta — una columna tipo app de radio escolar; reproductor fijo abajo */
:root{
  --bg:#F3F5F9; --surface:#FFFFFF; --ink:#18213A; --muted:#5B647C; --line:#DCE1EC;
  --accent:#1F5FD6; --accent-ink:#FFFFFF; --mark:#FFE47A; --mark-ink:#18213A;
  --teo:#C2410C; --lia:#1F5FD6; --ok:#13804B; --bad:#C0262D; --soft:#E8EEFB;
  --warn:#A15C07; --chart:#1F5FD6; --grid:#E3E7F0;
  --display:"Bricolage Grotesque","Avenir Next",system-ui,sans-serif;
  --body:"Atkinson Hyperlegible","Segoe UI",system-ui,sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){:root{
  --bg:#0F1424; --surface:#182036; --ink:#E9EDF7; --muted:#9AA4BE; --line:#2A3452;
  --accent:#7FA6FF; --accent-ink:#0F1424; --mark:#6B5A12; --mark-ink:#FFF6D0;
  --teo:#FF9A62; --lia:#7FA6FF; --ok:#4CC88A; --bad:#FF7A7F; --soft:#1F2A47;
  --warn:#F2B35B; --chart:#5A86EE; --grid:#26304A; color-scheme:dark}}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%}
body{background:var(--bg);color:var(--ink);font:400 17px/1.55 var(--body);padding-top:env(safe-area-inset-top,0px)}
[hidden]{display:none!important}
a{color:var(--accent)}
h1,h2,h3{font-family:var(--display);text-wrap:balance;margin:0;line-height:1.15}
h1{font-size:1.7rem;font-weight:800}
h2{font-size:1.35rem;font-weight:800}
h3{font-size:1.05rem;font-weight:600}
p{margin:0}
.wrap{max-width:740px;margin:0 auto;padding:8px max(16px,env(safe-area-inset-right)) 170px max(16px,env(safe-area-inset-left));display:grid;gap:16px;outline:none}
.top{display:flex;align-items:center;justify-content:space-between;gap:10px;max-width:740px;margin:0 auto;padding:12px max(16px,env(safe-area-inset-right)) 4px max(16px,env(safe-area-inset-left))}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font:800 1.15rem var(--display)}
.who-chip{text-decoration:none;font-weight:700;font-size:.9rem;padding:6px 12px;border-radius:999px;background:var(--soft);color:var(--ink)}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px;display:grid;gap:12px}
.stack{display:grid;gap:10px}
label{font-weight:700;font-size:.9rem}
.lbl{text-transform:uppercase;letter-spacing:.06em;font-size:.72rem;color:var(--muted);font-weight:700}
.note{color:var(--muted);font-size:.92rem}
.center{text-align:center}
.err{color:var(--bad);font-size:.93rem}
.warn{background:color-mix(in srgb,var(--mark) 45%,var(--surface));color:var(--ink);border-radius:10px;padding:8px 12px;font-size:.92rem}
textarea,select,input[type=text],input[type=password]{width:100%;font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px 12px}
textarea{min-height:200px;resize:vertical}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
@media (max-width:540px){.grid3{grid-template-columns:1fr 1fr}.grid3>:last-child{grid-column:1/-1}.grid2{grid-template-columns:1fr}}
.field{display:grid;gap:4px;min-width:0}
button{font:inherit}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:12px;padding:11px 18px;font-weight:700;cursor:pointer;background:var(--accent);color:var(--accent-ink);text-decoration:none}
.btn.ghost{background:var(--soft);color:var(--ink)}
.btn.danger{background:none;color:var(--bad);padding-inline:8px}
.btn.big{width:100%;padding:15px;font-size:1.05rem}
.btn:disabled{opacity:.55;cursor:wait}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.chip{display:inline-block;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;padding:3px 8px;border-radius:999px;background:var(--soft);color:var(--muted)}
.chip.ok{background:color-mix(in srgb,var(--ok) 18%,var(--surface));color:var(--ok)}
.chip.busy{background:color-mix(in srgb,var(--mark) 60%,var(--surface));color:var(--mark-ink)}
.chip.bad{background:color-mix(in srgb,var(--bad) 15%,var(--surface));color:var(--bad)}
.meta{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.spin{width:18px;height:18px;border-radius:50%;border:3px solid currentColor;border-right-color:transparent;animation:sp .8s linear infinite;display:inline-block;vertical-align:-3px}
@keyframes sp{to{transform:rotate(360deg)}}
.meter{height:8px;border-radius:8px;background:var(--line);overflow:hidden}
.meter i{display:block;height:100%;background:var(--accent);transition:width .4s}

/* Perfiles */
.profiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.profile{display:grid;gap:4px;justify-items:center;text-align:center;padding:18px 12px;border-radius:16px;background:var(--surface);border:1px solid var(--line);cursor:pointer;color:var(--ink);text-decoration:none}
.profile:hover{border-color:var(--accent)}
.avatar{width:58px;height:58px;border-radius:50%;display:grid;place-items:center;font:800 1.5rem var(--display);color:var(--accent-ink);background:var(--accent)}
.profile b{font-family:var(--display);font-size:1.1rem}

/* Biblioteca */
.ep-list{display:grid;gap:10px}
.ep{display:grid;gap:8px;padding:14px 16px;border-radius:14px;background:var(--surface);border:1px solid var(--line);text-decoration:none;color:var(--ink)}
.ep:hover{border-color:var(--accent)}
.ep h3{font-size:1.1rem}
.ep .stats{display:flex;gap:14px;flex-wrap:wrap;color:var(--muted);font-size:.88rem;font-variant-numeric:tabular-nums}

/* Pestañas episodio */
nav.tabs{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:var(--bg);display:flex;gap:4px;overflow-x:auto;padding-block:6px;border-bottom:1px solid var(--line);scrollbar-width:none}
nav.tabs a{flex:none;font-weight:700;font-size:.95rem;color:var(--muted);padding:8px 12px;border-radius:999px;text-decoration:none}
nav.tabs a[aria-current="page"]{background:var(--ink);color:var(--bg)}
@media (max-width:440px){nav.tabs{gap:0;justify-content:space-between}nav.tabs a{font-size:.8rem;padding:7px 6px}}

/* Guion */
.transcript{display:grid;gap:8px}
.seg{display:grid;grid-template-columns:44px minmax(0,1fr);gap:10px;align-items:start;padding:10px;border-radius:12px;cursor:pointer;border:1px solid transparent}
.seg:hover{border-color:var(--line)}
.seg .who{font:600 .76rem var(--display);text-align:center;padding-top:3px;color:var(--muted)}
.seg .who span{display:grid;place-items:center;width:34px;height:34px;margin:0 auto 2px;border-radius:50%;color:var(--surface);font:800 .95rem var(--display)}
.seg.lia .who span{background:var(--lia)} .seg.teo .who span{background:var(--teo)}
.seg.now{background:var(--surface);border-color:var(--line)}
.seg .s.on{background:var(--mark);color:var(--mark-ink);border-radius:4px;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.seg.done{opacity:.62}
.doubt-inline{margin-left:54px;border-left:3px solid var(--mark);padding:8px 12px;background:var(--surface);border-radius:0 10px 10px 0;font-size:.95rem;display:grid;gap:4px}
.doubt-inline b{font-family:var(--display)}

/* Reproductor */
.player{position:fixed;left:0;right:0;bottom:0;z-index:6;background:var(--surface);border-top:1px solid var(--line);padding:10px max(16px,env(safe-area-inset-right)) calc(10px + env(safe-area-inset-bottom)) max(16px,env(safe-area-inset-left))}
.player .in{max-width:740px;margin:0 auto;display:grid;gap:8px}
.bar{height:6px;border-radius:6px;background:var(--line);overflow:hidden;cursor:pointer}
.bar i{display:block;height:100%;background:var(--accent);width:0;transition:width .3s}
.ctrls{display:grid;grid-template-columns:auto auto auto minmax(0,1fr) auto;gap:8px;align-items:center}
.icon{width:46px;height:46px;border-radius:50%;border:0;background:var(--soft);color:var(--ink);display:grid;place-items:center;cursor:pointer}
.icon.play{background:var(--accent);color:var(--accent-ink);width:54px;height:54px}
.doubt-btn{border:0;border-radius:999px;padding:13px 14px;font:800 1rem var(--display);background:var(--mark);color:var(--mark-ink);cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;min-width:0}
.rate{font:700 .85rem var(--body);border:1px solid var(--line);background:none;color:var(--ink);border-radius:8px;padding:8px;cursor:pointer;font-variant-numeric:tabular-nums}
@media (max-width:400px){.ctrls{grid-template-columns:auto auto auto minmax(0,1fr)}.rate{display:none}.icon{width:40px;height:40px}}

/* Hoja de dudas */
.sheet{position:fixed;inset:0;z-index:20;background:rgba(10,14,28,.5);display:grid;align-items:end}
.sheet .card{background:var(--surface);border-radius:18px 18px 0 0;max-height:90%;overflow:auto;padding:18px max(16px,env(safe-area-inset-right)) calc(18px + env(safe-area-inset-bottom)) max(16px,env(safe-area-inset-left))}
.sheet .card>div{max-width:740px;margin:0 auto;display:grid;gap:12px}
.sheet-head{display:flex;justify-content:space-between;align-items:center;gap:8px}
.mic{width:96px;height:96px;border-radius:50%;border:0;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;margin:4px auto 0;cursor:pointer}
.mic.rec{background:var(--bad);animation:pulse 1.2s infinite}
.mic:disabled{opacity:.5}
#meter{display:block;margin:0 auto;max-width:100%}
@keyframes pulse{50%{box-shadow:0 0 0 14px color-mix(in srgb,var(--bad) 25%,transparent)}}
.q-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px}
.answer{background:var(--bg);border-radius:12px;padding:12px 14px;white-space:pre-wrap;min-height:2.5em}

/* Esquema */
.sum .sec{display:grid;gap:4px;padding-top:10px;border-top:1px solid var(--line)}
.sum ul{margin:4px 0 0;padding-left:20px;display:grid;gap:4px}
.terms{display:grid;gap:8px;margin:0}
.terms div{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:10px}
@media (max-width:540px){.terms div{grid-template-columns:1fr;gap:0}}
.terms dt{font-weight:700}.terms dd{margin:0;color:var(--muted)}
.qa{display:grid;gap:4px;padding:10px 12px;border-left:3px solid var(--mark);background:var(--bg);border-radius:0 10px 10px 0}
details summary{cursor:pointer;color:var(--accent);font-weight:700;font-size:.9rem}

/* Tarjetas */
.flash{perspective:1000px;cursor:pointer}
.flash .inner{position:relative;min-height:230px;transition:transform .5s;transform-style:preserve-3d}
.flash.flip .inner{transform:rotateY(180deg)}
.flash .face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:16px;border:1px solid var(--line);display:grid;place-items:center;text-align:center;padding:22px;background:var(--surface);font-size:1.15rem}
.flash .front{font:600 1.35rem var(--display)}
.flash .back{transform:rotateY(180deg);background:var(--soft)}
.cardnav{display:flex;justify-content:space-between;align-items:center;gap:8px;font-variant-numeric:tabular-nums}

/* Examen */
.q{display:grid;gap:8px;padding-top:14px;border-top:1px solid var(--line)}
.opt{display:flex;gap:10px;align-items:flex-start;text-align:left;width:100%;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:10px;padding:10px 12px;cursor:pointer;font:inherit}
.opt b{font-family:var(--display)}
.opt.sel{border-color:var(--accent);background:var(--soft)}
.opt.right{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 14%,var(--surface))}
.opt.wrong{border-color:var(--bad);background:color-mix(in srgb,var(--bad) 12%,var(--surface))}
.score{font:800 2.6rem var(--display);font-variant-numeric:tabular-nums}
.empty{text-align:center;justify-items:center;padding:28px 16px}

.toast{position:fixed;left:50%;bottom:calc(120px + env(safe-area-inset-bottom));transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:12px;z-index:30;max-width:90vw;font-size:.95rem}

/* Red */
.net{position:sticky;top:env(safe-area-inset-top,0px);z-index:7;margin:0;background:var(--ink);color:var(--bg);font-size:.88rem;text-align:center;padding:8px max(16px,env(safe-area-inset-right)) 8px max(16px,env(safe-area-inset-left))}
.parent-link{justify-self:center;font-weight:700;font-size:.92rem;padding:8px}
.chip.link{text-decoration:none;color:var(--accent);background:var(--soft)}
.label-row{display:flex;justify-content:space-between;align-items:baseline;gap:8px}
.check{display:flex;align-items:center;gap:10px;font-size:1rem;cursor:pointer}
.check input{width:20px;height:20px;accent-color:var(--accent)}
.chapnav{display:inline-flex;gap:8px;margin-left:auto}
.chapnav .btn,.dl-btn{padding:9px 12px;font-size:.9rem}
.dl-btn[data-state="done"]{color:var(--ok)}
.next-ch{padding-top:6px}

/* Series y capítulos */
.ep-title{text-decoration:none;color:var(--ink)}
.chapters{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.chapters a{display:grid;grid-template-columns:30px minmax(0,1fr) auto;gap:10px;align-items:center;padding:8px 10px;border-radius:10px;background:var(--bg);text-decoration:none;color:var(--ink)}
.chapters a:hover{background:var(--soft)}
.chapters .num{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--surface);border:1px solid var(--line);font:700 .85rem var(--display);font-variant-numeric:tabular-nums}
.chapters a.done .num{background:var(--ok);border-color:var(--ok);color:var(--surface)}
.chapters .ct{display:grid;min-width:0}
.chapters .ct b{font-weight:700;font-size:.97rem}
.chapters .ct small{color:var(--muted);font-size:.84rem;line-height:1.35}
.chapters .cs{font-size:.8rem;color:var(--muted);white-space:nowrap;font-variant-numeric:tabular-nums}
.chapters .cs.bad{color:var(--bad)}

/* Explícamelo tú */
.timer{text-align:center;font:700 1.4rem var(--display);font-variant-numeric:tabular-nums;color:var(--muted)}
#ex-text{min-height:140px}
.fb-sec{display:grid;gap:4px}
.fb-list{margin:0;padding-left:0;list-style:none;display:grid;gap:6px}
.fb-list li{padding-left:26px;position:relative}
.fb-list li::before{position:absolute;left:0;top:0;font-weight:800;font-family:var(--display)}
.fb-list.ok li::before{content:"✓";color:var(--ok)}
.fb-list.miss li::before{content:"+";color:var(--warn)}
.fb-list.mist li::before{content:"!";color:var(--bad)}
.fb-list s{color:var(--muted)}
.tip{background:var(--soft);border-radius:10px;padding:10px 12px}

/* Panel para padres */
.pcard{text-decoration:none;color:var(--ink)}
.pcard:hover{border-color:var(--accent)}
.pc-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.pc-head>div{min-width:0;flex:1}
.pill{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:.8rem;padding:4px 10px;border-radius:999px;border:1px solid currentColor}
.pill.good{color:var(--ok)} .pill.warn{color:var(--warn)} .pill.bad{color:var(--bad)}
.pill::before{content:"";width:8px;height:8px;border-radius:50%;background:currentColor}
.tiles{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
@media (max-width:600px){.tiles{grid-template-columns:repeat(2,minmax(0,1fr))}}
.stack-tight{display:grid;gap:4px;justify-items:start}
.tile{background:var(--bg);border-radius:12px;padding:10px 12px;display:grid;gap:2px;min-width:0}
.tile .k{font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700}
.tile .v{font:800 1.45rem var(--display);font-variant-numeric:tabular-nums;line-height:1.2}
.tile .s{font-size:.82rem;color:var(--muted)}
.chart{margin:0;display:grid;gap:8px;position:relative}
.chart figcaption{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap}
.plot{position:relative;height:120px;margin-left:44px}
.plot .gl{position:absolute;left:0;right:0;border-top:1px dashed var(--grid)}
.plot .gl span{position:absolute;right:calc(100% + 6px);top:-.6em;font-size:.72rem;color:var(--muted);white-space:nowrap;font-variant-numeric:tabular-nums}
.plot .base{position:absolute;left:0;right:0;bottom:0;border-top:1px solid var(--line)}
.bars{position:absolute;inset:0;display:flex;gap:2px;align-items:flex-end}
.bcol{flex:1;height:100%;display:flex;align-items:flex-end;justify-content:center;outline:none;cursor:default}
.bcol i{display:block;width:72%;max-width:22px;background:var(--chart);border-radius:4px 4px 0 0;min-height:0}
.bcol:hover i,.bcol:focus-visible i{filter:brightness(1.15)}
.bcol:focus-visible{box-shadow:inset 0 0 0 2px var(--accent);border-radius:4px}
.xlabels{display:flex;gap:2px;margin-left:44px}
.xlabels span{flex:1;text-align:center;font-size:.7rem;color:var(--muted);font-variant-numeric:tabular-nums;position:relative;padding-top:8px}
.xlabels span.act::before{content:"";position:absolute;top:0;left:50%;width:5px;height:5px;margin-left:-2.5px;border-radius:50%;background:var(--ink)}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:.8rem;color:var(--muted)}
.legend span{display:inline-flex;align-items:center;gap:6px}
.legend .sw{width:12px;height:12px;border-radius:3px;background:var(--chart)}
.legend .dt{width:6px;height:6px;border-radius:50%;background:var(--ink)}
.ctip{position:absolute;z-index:3;pointer-events:none;background:var(--ink);color:var(--bg);font-size:.82rem;padding:6px 10px;border-radius:8px;white-space:nowrap;transform:translateX(-50%)}
.tablewrap{overflow-x:auto;margin:0 -4px}
table.topics{width:100%;border-collapse:collapse;font-size:.92rem;min-width:520px}
.topics th{text-align:left;font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);padding:6px 8px;border-bottom:1px solid var(--line)}
.topics td:first-child,.topics th:first-child{min-width:150px}
.topics td{padding:8px;border-bottom:1px solid var(--line);vertical-align:top;font-variant-numeric:tabular-nums}
.topics td small{display:block;color:var(--muted)}
.topics .num{text-align:right;white-space:nowrap}
.mini{display:inline-block;width:44px;height:6px;border-radius:6px;background:var(--line);vertical-align:middle;margin-right:6px;overflow:hidden}
.mini i{display:block;height:100%;background:var(--chart)}
.items{display:grid;gap:8px}
.item{background:var(--bg);border-radius:10px;padding:10px 12px;display:grid;gap:4px}
.item small{color:var(--muted)}
.wp{display:grid;gap:2px;padding:8px 0;border-top:1px solid var(--line)}
.wp:first-child{border-top:0}

/* Conversación, manos libres y aviso de IA */
.sheet.followup #ans-zone{order:1}
.sheet.followup #ask-zone{order:2}
#sheet .ai-note{order:3}
.ai-note{font-size:.8rem;color:var(--muted);border-left:3px solid var(--line);padding:2px 0 2px 10px;margin:0}
.hf-box{display:grid;gap:4px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.hf-state{color:var(--ok);font-weight:700}
.hf-state:empty{display:none}
.doubt-btn.hf-on{box-shadow:0 0 0 3px color-mix(in srgb,var(--ok) 55%,transparent)}

/* Cámara del PC: siempre oscura, como cualquier visor de cámara */
.cam{position:fixed;inset:0;z-index:40;background:#0B0F1A;color:#F3F5F9;display:grid;grid-template-rows:minmax(0,1fr) auto auto auto auto;gap:12px;
  padding:calc(12px + env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-right,0px)) calc(16px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px))}
.cam-view{position:relative;min-height:0}
.cam video{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;border-radius:12px;transition:opacity .15s}
.cam.shutter video{opacity:.25}
.cam-msg{margin:0;text-align:center;color:#C9D1E6;font-size:.92rem}
.cam-tray{display:flex;gap:8px;overflow-x:auto;justify-content:center;min-height:0}
.cam-tray:empty{display:none}
.cam-thumb{flex:none;width:56px;height:72px;border-radius:8px;overflow:hidden;border:2px solid #F3F5F9;padding:0;background:#000;cursor:pointer}
.cam-thumb img{width:100%;height:100%;object-fit:cover}
.cam-bar{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;max-width:520px;width:100%;margin:0 auto}
.cam-bar>.btn:first-child{justify-self:start}
.cam-bar>.btn:last-child{justify-self:end}
.cam .btn.ghost{background:#1F2A47;color:#F3F5F9}
.cam-snap{width:72px;height:72px;border-radius:50%;border:4px solid #F3F5F9;background:#F3F5F9;box-shadow:inset 0 0 0 4px #0B0F1A;cursor:pointer}
.cam-snap:disabled{opacity:.35;cursor:not-allowed}
.cam-switch{justify-self:center}

.sources ul{margin:4px 0 0;padding-left:20px;display:grid;gap:4px;font-size:.92rem}
.sources summary{color:var(--ink);font-weight:700}

@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}