/* Estudio · vista del profesor y pantalla del salón (común a las 8 semanas) */
:root{--azul:#0c3a52;--ink:#082a3c;--cielo:#92d3db;--salmon:#ec7361;--beige:#f1dfd6;--crema:#fbf5f1;--f-title:'Antipasto Pro','Avenir',system-ui,sans-serif;--f-body:'Avenir','Nunito Sans','Helvetica Neue',Arial,sans-serif;--f-impact:'Anton','Avenir',Impact,'Arial Narrow',sans-serif;--ui-bg:#0c3a52;--ui-deep:#082a3c;--ui-fg:#f1dfd6;--ui-line:#1f4d66;--ui-bar:#082a3c}
html,body{height:100%;margin:0;background:var(--ui-bg);color:var(--ui-fg);font-family:var(--f-body);overflow:hidden}
*{box-sizing:border-box}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
button:focus-visible,a:focus-visible,input:focus-visible{outline:4px solid var(--salmon);outline-offset:3px}

/* Botones: el mismo estilo de siempre, en tamaño grande */
.ui-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:60px;padding:10px 22px;border:3px solid var(--beige);border-radius:14px;font-weight:900;font-size:20px;background:var(--azul);color:var(--beige);box-shadow:5px 5px 0 var(--ink);letter-spacing:.02em;white-space:nowrap;text-decoration:none;font-family:var(--f-body)}
.ui-btn:hover{background:#12516f}
.ui-btn:active{transform:translate(3px,3px);box-shadow:2px 2px 0 var(--ink)}
.ui-btn.sal{background:var(--salmon);color:var(--ink);border-color:var(--ink)}
.ui-btn.cielo{background:var(--cielo);color:var(--ink);border-color:var(--ink)}
.ui-btn.beige{background:var(--beige);color:var(--ink);border-color:var(--ink)}
.ui-btn[disabled],.ui-btn[aria-disabled="true"]{opacity:.45;pointer-events:none}
.ui-btn .ar{font-size:28px;line-height:1}

/* ---------- Profesor ---------- */
#ui{height:100%;height:100dvh;display:grid;grid-template-rows:auto minmax(0,1fr) auto}
#viewport{position:relative;overflow:hidden;height:min(40vh,calc((100vw - 32px) * 9 / 16 + 24px));min-height:150px;margin:0}
#notes{overflow:auto;padding:18px 20px 28px;-webkit-overflow-scrolling:touch}
#notes .in{max-width:980px;margin:0 auto;display:grid;gap:16px}
#notes .head{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px}
#notes .back{font-size:15px;font-weight:700;color:var(--cielo);text-decoration:none;margin-right:auto}
#notes .pos{font-weight:900;font-size:18px;letter-spacing:.04em;font-variant-numeric:tabular-nums}
#notes .chips{display:flex;flex-wrap:wrap;gap:8px}
#notes .chips span{border:2px solid var(--beige);border-radius:10px;padding:3px 10px;font-size:14px;font-weight:900;text-transform:uppercase;letter-spacing:.06em;font-variant-numeric:tabular-nums}
#notes .chips .blk{background:var(--cielo);color:var(--ink);border-color:var(--ink)}
#notes .chips .blk[data-blk="Concebir"]{background:var(--salmon)} #notes .chips .blk[data-blk="Crear"]{background:var(--beige)}
#n-body{font-size:clamp(20px,2.3vw,27px);line-height:1.5;display:grid;gap:14px}
#n-body p{margin:0;padding:14px 18px;border-left:6px solid var(--cielo);background:rgba(255,255,255,.05);border-radius:0 14px 14px 0}
#n-body p:first-child{border-left-color:var(--salmon)}
#n-body b{color:#fff}
#n-empty{font-size:20px;opacity:.7}
#n-next{font-size:16px;opacity:.8;border-top:2px dashed var(--ui-line);padding-top:12px}
#n-next b{text-transform:uppercase;letter-spacing:.08em;font-size:13px;margin-right:8px;opacity:.85}
#n-video{display:grid;gap:14px;padding:18px;border:3px solid var(--beige);border-radius:18px;background:var(--ui-deep);box-shadow:6px 6px 0 var(--ink)}
#n-video .row{display:flex;flex-wrap:wrap;gap:12px}
#n-video .st{font-size:16px;opacity:.85}
#n-video .st b{color:var(--cielo)}

#bar{display:flex;align-items:center;gap:14px;padding:12px 16px;padding-bottom:calc(12px + env(safe-area-inset-bottom,0px));border-top:3px solid var(--ui-line);background:var(--ui-bar)}
#bar .side{flex:1;display:flex;align-items:center;gap:10px;min-width:0}
#bar .side.r{justify-content:flex-end}
#bar .mid{display:flex;align-items:center;gap:12px}
#b-prev,#b-next{min-width:150px;font-size:22px}
#b-count{min-width:120px;font-size:24px;font-variant-numeric:tabular-nums;background:var(--beige);color:var(--ink);border-color:var(--ink)}
#crono{display:flex;align-items:center;gap:10px}
#c-disp{font-family:var(--f-impact);font-size:38px;line-height:1;letter-spacing:.02em;font-variant-numeric:tabular-nums;min-width:4.2ch}
#c-disp small{font-family:var(--f-body);font-size:14px;font-weight:700;opacity:.7;margin-left:4px}
#crono.over #c-disp{color:var(--salmon)}
#c-btn{min-width:60px;padding:10px 14px}
#b-pant.on{background:var(--cielo);color:var(--ink);border-color:var(--ink)}
#b-pant .dot{width:12px;height:12px;border-radius:50%;background:var(--salmon);border:2px solid var(--ink)}
#b-pant.on .dot{background:#2f9e5e}
@media (max-width:820px){
  #bar{gap:8px;padding:10px}
  #b-prev,#b-next{min-width:0;padding:10px 16px}
  #b-prev .tx,#b-next .tx,#b-pant .tx{display:none}
  #b-count{min-width:92px;font-size:20px}
  #c-disp{font-size:30px} #c-disp small{display:none}
}
@media (max-width:520px){
  #bar{flex-wrap:wrap}
  #bar .mid{order:-1;width:100%;justify-content:space-between}
  #b-prev,#b-next{flex:1}
}

/* Láminas (saltar) */
#grid{position:fixed;inset:0;background:var(--ui-bg);overflow:auto;padding:18px 18px 120px;display:none;z-index:40}
#grid.open{display:block}
#grid .top{display:flex;align-items:center;gap:12px;margin:0 auto 16px;max-width:1400px}
#grid .top h2{font-family:var(--f-body);font-weight:900;font-size:22px;margin:0;margin-right:auto}
#grid .cells{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:18px;max-width:1400px;margin:0 auto}
#grid .cell{border:3px solid var(--beige);border-radius:12px;overflow:hidden;background:var(--azul);cursor:pointer;box-shadow:5px 5px 0 var(--ink);text-align:left;padding:0}
#grid .cell.cur{outline:5px solid var(--salmon)}
#grid .thumb-box{aspect-ratio:16/9;overflow:hidden;position:relative}
#grid .thumb{width:1920px;height:1080px;transform-origin:0 0;position:relative;pointer-events:none}
#grid .thumb .slide{display:block}
#grid .lbl{display:flex;justify-content:space-between;gap:8px;padding:8px 10px;font-size:14px;font-weight:900;font-variant-numeric:tabular-nums}
#grid .lbl .b{text-transform:uppercase;letter-spacing:.06em;opacity:.85}

/* Escenario */
#stage{transform-origin:0 0}
body.profe #stage{border-width:4px;box-shadow:8px 8px 0 var(--ink)}

/* Modales */
.ui-modal{position:fixed;inset:0;background:rgba(8,42,60,.85);display:none;place-items:center;z-index:60;padding:16px}
.ui-modal.open{display:grid}
.ui-modal .box{width:min(640px,100%);max-height:calc(100dvh - 32px);overflow:auto;background:var(--azul);border:4px solid var(--beige);border-radius:22px;box-shadow:10px 10px 0 var(--ink);padding:22px;display:grid;gap:18px}
.ui-modal h2{font-family:var(--f-title);font-weight:800;font-size:30px;margin:0;line-height:1.05}
.ui-modal h3{font-family:var(--f-body);font-weight:900;font-size:18px;margin:0 0 6px}
.ui-modal p{margin:0;font-size:16px;line-height:1.45}
.ui-modal .opt{border:2px dashed var(--ui-line);border-radius:16px;padding:14px;display:grid;gap:10px}
.ui-modal .row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.ui-modal input.code{font:900 34px/1 var(--f-body);letter-spacing:.3em;text-transform:uppercase;width:7.2ch;padding:10px 12px;border:3px solid var(--ink);border-radius:14px;background:var(--beige);color:var(--ink);text-align:center}
.ui-modal .msg{font-weight:700;min-height:1.4em}
.ui-modal .msg.ok{color:#9fe0b6} .ui-modal .msg.err{color:var(--salmon)}
.ui-modal .x{justify-self:end}

/* Video en pantalla completa */
#vp-stage{position:fixed;inset:0;background:#000;display:none;place-items:center;z-index:50}
#vp-stage.open{display:grid}
#vp-frame{width:100%;height:100%}
#vp-frame iframe,#vp-frame video{width:100%;height:100%;border:0;display:block;background:#000}
#vp-close{position:absolute;top:14px;right:14px;z-index:2;opacity:.85}
body.pantalla #vp-close{display:none}
#vp-remote{position:fixed;inset:0;display:none;place-content:center;justify-items:center;gap:16px;text-align:center;background:var(--ui-deep);z-index:50;padding:20px}
#vp-remote.open{display:grid}
#vp-remote b{font-family:var(--f-title);font-size:40px}

/* ---------- Pantalla del salón ---------- */
body.pantalla #notes,body.pantalla #bar{display:none!important}
body.pantalla #ui{grid-template-rows:1fr}
body.pantalla #viewport{height:100vh;height:100dvh;margin:0}
body.pantalla #stage{border:0;box-shadow:none;border-radius:0}
body.pantalla.idle{cursor:none}
#p-code{position:fixed;inset:0;display:none;place-content:center;justify-items:center;gap:22px;text-align:center;background:rgba(8,42,60,.94);z-index:45;padding:24px}
#p-code.open{display:grid}
#p-code .lbl{font-size:clamp(18px,2.4vw,30px);font-weight:700;max-width:30ch;line-height:1.35}
#p-code .code{font-family:var(--f-impact);font-size:clamp(90px,16vw,240px);line-height:1;letter-spacing:.12em;padding:10px 30px 10px 50px;background:var(--beige);color:var(--ink);border:8px solid var(--ink);border-radius:30px;box-shadow:14px 14px 0 var(--salmon)}
#p-code .st{font-size:clamp(15px,1.6vw,20px);opacity:.8}
#p-code .row{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
#p-mini{position:fixed;right:12px;bottom:12px;z-index:44;font:900 14px/1 var(--f-body);letter-spacing:.14em;background:rgba(8,42,60,.75);color:var(--beige);border:2px solid var(--ui-line);border-radius:10px;padding:8px 10px;display:none}
body.pantalla #p-mini.show{display:block}