/* ============================================================
   CircuitLab — curso, ejemplos, ejercicios, retos y modo profesor
   ============================================================ */
.drawer{
  position:fixed;left:0;top:calc(var(--topbar-h) + var(--toolbar2-h));bottom:0;width:min(480px,96vw);z-index:70;
  background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;
  box-shadow:14px 0 34px rgba(0,0,0,.35);animation:drin .22s ease;
}
.drawer.right{left:auto;right:0;border-right:0;border-left:1px solid var(--line);box-shadow:-14px 0 34px rgba(0,0,0,.35)}
.drawer.wide{width:min(760px,98vw)}
@keyframes drin{from{transform:translateX(-26px);opacity:0}to{transform:none;opacity:1}}
.dr-head{display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 15px;border-bottom:1px solid var(--line);flex:0 0 auto}
.dr-head h2{font-size:15px}
.dr-body{flex:1 1 auto;overflow-y:auto;padding:14px 15px 26px}

/* ---------------- Progreso / puntaje ---------------- */
.score-bar{display:flex;align-items:center;gap:10px;background:var(--bg2);border:1px solid var(--line);
  border-radius:12px;padding:10px 13px;margin-bottom:14px}
.score-bar .sb-xp{font-family:var(--mono);font-size:19px;color:var(--acc);font-weight:700}
.score-bar .sb-lbl{font-size:11px;color:var(--text-mute);line-height:1.3}
.score-bar .sb-prog{flex:1 1 auto;height:8px;background:var(--panel2);border-radius:20px;overflow:hidden}
.score-bar .sb-prog i{display:block;height:100%;background:linear-gradient(90deg,var(--acc),var(--acc2));border-radius:20px;transition:width .4s}

/* ---------------- Tarjetas de nivel ---------------- */
.lvl-list{display:flex;flex-direction:column;gap:9px}
.lvl{
  display:flex;gap:12px;align-items:flex-start;padding:12px 13px;background:var(--bg2);
  border:1px solid var(--line);border-radius:13px;text-align:left;width:100%;transition:.16s;
}
.lvl:hover{border-color:var(--acc);transform:translateX(3px)}
.lvl .lv-num{
  flex:0 0 auto;width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(160deg,var(--acc2),#4f46e5);color:#fff;font-weight:700;font-size:15px;
}
.lvl.done .lv-num{background:linear-gradient(160deg,#34d399,#059669)}
.lvl.locked{opacity:.55}
.lvl.locked .lv-num{background:var(--panel2);color:var(--text-mute)}
.lvl .lv-txt{flex:1 1 auto;min-width:0}
.lvl .lv-txt b{display:block;font-size:13.5px;margin-bottom:2px}
.lvl .lv-txt small{display:block;font-size:11.5px;color:var(--text-mute);line-height:1.5}
.lvl .lv-meta{display:flex;gap:8px;margin-top:6px;font-size:10.5px;color:var(--text-dim);flex-wrap:wrap}
.lvl .lv-meta span{background:var(--panel2);border-radius:20px;padding:2px 8px}
.stars{color:#fbbf24;letter-spacing:1px;font-size:11px}

/* ---------------- Contenido de una lección ---------------- */
.lesson h3{font-size:16px;margin-bottom:4px}
.lesson .lead{color:var(--text-dim);font-size:13px;line-height:1.65;margin-bottom:14px}
.lesson h4{font-size:13px;margin:16px 0 6px;color:var(--acc)}
.lesson p{font-size:13px;line-height:1.7;color:var(--text-dim);margin:0 0 10px}
.lesson ul,.lesson ol{font-size:13px;line-height:1.7;color:var(--text-dim);padding-left:20px;margin:0 0 10px}
.lesson li{margin-bottom:4px}
.lesson code{background:var(--bg2);padding:1.5px 6px;border-radius:5px;font-family:var(--mono);font-size:12px;color:var(--acc)}
.lesson .fig{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:12px;margin:12px 0}
.lesson .fig svg{width:100%;height:auto;display:block;overflow:visible}
.lesson .fig figcaption{font-size:11.5px;color:var(--text-mute);margin-top:8px;text-align:center;line-height:1.5}
.callout{
  display:flex;gap:10px;background:rgba(34,211,238,.09);border-left:3px solid var(--acc);
  border-radius:10px;padding:11px 13px;margin:12px 0;font-size:12.5px;line-height:1.65;color:var(--text-dim);
}
.callout.warn{background:rgba(251,191,36,.09);border-left-color:var(--warn)}
.callout.danger{background:rgba(248,113,113,.09);border-left-color:var(--err)}
.callout.ok{background:rgba(52,211,153,.09);border-left-color:var(--ok)}
.callout b{color:var(--text)}
.lesson-nav{display:flex;gap:8px;justify-content:space-between;margin-top:20px;padding-top:14px;border-top:1px solid var(--line);flex-wrap:wrap}

/* ---------------- Preguntas ---------------- */
.quiz{background:var(--bg2);border:1px solid var(--line);border-radius:13px;padding:14px;margin:14px 0}
.quiz .q-num{font-size:10.5px;color:var(--text-mute);text-transform:uppercase;letter-spacing:.7px}
.quiz .q-txt{font-size:13.5px;margin:5px 0 11px;line-height:1.55;color:var(--text)}
.opt{
  display:flex;gap:9px;align-items:flex-start;width:100%;text-align:left;padding:9px 11px;
  background:var(--panel);border:1px solid var(--line);border-radius:10px;margin-bottom:6px;
  font-size:12.5px;line-height:1.5;color:var(--text-dim);transition:.14s;
}
.opt:hover{border-color:var(--acc);color:var(--text)}
.opt .o-key{flex:0 0 auto;width:20px;height:20px;border-radius:6px;background:var(--bg2);
  display:grid;place-items:center;font-size:11px;font-weight:700;color:var(--text-mute)}
.opt.right{border-color:var(--ok);background:rgba(52,211,153,.13);color:var(--text)}
.opt.right .o-key{background:var(--ok);color:#04241a}
.opt.wrong{border-color:var(--err);background:rgba(248,113,113,.12)}
.opt.wrong .o-key{background:var(--err);color:#2a0505}
.opt[disabled]{pointer-events:none}
.q-feed{font-size:12.5px;line-height:1.6;margin-top:9px;padding:9px 11px;border-radius:9px;display:none}
.q-feed.show{display:block}
.q-feed.ok{background:rgba(52,211,153,.12);color:#a7f3d0}
.q-feed.no{background:rgba(248,113,113,.12);color:#fecaca}

/* ---------------- Actividad práctica / retos ---------------- */
.task{background:linear-gradient(135deg,rgba(129,140,248,.14),rgba(34,211,238,.09));
  border:1px solid rgba(129,140,248,.35);border-radius:13px;padding:14px;margin:14px 0}
.task h5{font-size:12.5px;color:#c7d2fe;margin-bottom:6px;text-transform:uppercase;letter-spacing:.6px}
.task p{margin:0 0 8px;font-size:13px;line-height:1.65;color:var(--text-dim)}
.task .req{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0}
.task .req span{font-size:11px;background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:3px 9px;color:var(--text-dim)}
.task .req span.ok{border-color:var(--ok);color:#6ee7b7}
.check-list{list-style:none;padding:0;margin:10px 0 0}
.check-list li{display:flex;gap:8px;align-items:flex-start;font-size:12.5px;line-height:1.55;
  padding:6px 0;border-bottom:1px dashed var(--line);color:var(--text-dim)}
.check-list li:last-child{border-bottom:0}
.check-list li .ci{flex:0 0 auto}
.check-list li.ok{color:#a7f3d0}
.check-list li.no{color:#fca5a5}

/* ---------------- Galería de ejemplos / ejercicios ---------------- */
.gal-filters{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}
.gal-filters button{font-size:11.5px;padding:5px 11px;border-radius:20px;background:var(--bg2);
  border:1px solid var(--line);color:var(--text-dim)}
.gal-filters button.active{background:var(--acc);color:#04222a;border-color:transparent;font-weight:600}
.gal{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:11px}
.gcard{background:var(--bg2);border:1px solid var(--line);border-radius:13px;overflow:hidden;
  display:flex;flex-direction:column;transition:.16s;text-align:left}
.gcard:hover{border-color:var(--acc);transform:translateY(-3px);box-shadow:0 10px 22px rgba(0,0,0,.28)}
.gcard .gc-thumb{height:96px;background:linear-gradient(135deg,#16223a,#0f1a2e);display:grid;place-items:center;font-size:34px}
body.light .gcard .gc-thumb{background:linear-gradient(135deg,#eef3fb,#dfe8f6)}
.gcard .gc-body{padding:10px 11px;flex:1 1 auto;display:flex;flex-direction:column;gap:4px}
.gcard .gc-body b{font-size:12.5px;line-height:1.3}
.gcard .gc-body small{font-size:11px;color:var(--text-mute);line-height:1.5;flex:1 1 auto}
.gcard .gc-foot{display:flex;align-items:center;gap:6px;margin-top:6px}
.gcard .lvl-badge{font-size:10px;padding:2px 7px;border-radius:20px;background:var(--panel2);color:var(--text-dim)}
.gcard .lvl-badge.b1{color:#6ee7b7}.gcard .lvl-badge.b2{color:#93c5fd}
.gcard .lvl-badge.b3{color:#fcd34d}.gcard .lvl-badge.b4{color:#fca5a5}.gcard .lvl-badge.b5{color:#d8b4fe}
.gcard.done{border-color:rgba(52,211,153,.5)}
.gcard.done .gc-thumb::after{content:"✔";position:absolute;margin:-70px 0 0 70px;font-size:16px;color:#34d399}

/* ---------------- Detalle de ejemplo / ejercicio ---------------- */
.detail h3{font-size:16px;margin-bottom:8px}
.detail .obj{font-size:13px;line-height:1.7;color:var(--text-dim);margin-bottom:12px}
.detail .comp-list{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}
.detail .comp-list span{font-size:11.5px;background:var(--bg2);border:1px solid var(--line);
  border-radius:20px;padding:4px 10px;color:var(--text-dim)}
.detail .actions{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}
.diagram{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:12px;margin-bottom:12px}
.diagram svg{width:100%;height:auto;display:block;overflow:visible}
.code-sample{background:#0a1120;border:1px solid var(--line);border-radius:10px;padding:11px 13px;
  font-family:var(--mono);font-size:11.5px;line-height:1.55;color:#a5f3fc;white-space:pre;overflow-x:auto;margin:10px 0}
body.light .code-sample{background:#f4f7fd;color:#0f5f6e}

/* ---------------- Modo profesor ---------------- */
.tp-tabs{display:flex;gap:3px;margin-bottom:14px;background:var(--bg2);border-radius:10px;padding:4px}
.tp-tabs button{flex:1;padding:8px;font-size:11.5px;border-radius:8px;color:var(--text-mute)}
.tp-tabs button.active{background:var(--panel2);color:var(--acc);font-weight:600}
.form-row{margin-bottom:11px}
.form-row label{display:block;font-size:11.5px;color:var(--text-dim);margin-bottom:4px}
.form-row input[type=text],.form-row input[type=number],.form-row textarea,.form-row select{
  width:100%;background:var(--bg2);border:1px solid var(--line);border-radius:9px;
  padding:8px 10px;font-size:12.5px;outline:none;color:var(--text);font-family:inherit;
}
.form-row textarea{min-height:78px;resize:vertical;line-height:1.55}
.form-row input:focus,.form-row textarea:focus,.form-row select:focus{border-color:var(--acc)}
.chk-grid{display:grid;grid-template-columns:1fr 1fr;gap:5px;max-height:200px;overflow-y:auto;
  background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:9px}
.chk-grid label{display:flex;gap:6px;align-items:center;font-size:11.5px;color:var(--text-dim);cursor:pointer}
.chk-grid input{accent-color:var(--acc)}
.tbl{width:100%;border-collapse:collapse;font-size:12px}
.tbl th{text-align:left;font-size:10.5px;text-transform:uppercase;letter-spacing:.6px;color:var(--text-mute);
  padding:7px 8px;border-bottom:1px solid var(--line)}
.tbl td{padding:7px 8px;border-bottom:1px solid var(--line);color:var(--text-dim)}
.tbl tr:hover td{background:var(--bg2)}
.pill{font-size:10.5px;padding:2px 8px;border-radius:20px;background:var(--panel2);color:var(--text-dim)}
.pill.ok{background:rgba(52,211,153,.16);color:#6ee7b7}
.pill.no{background:rgba(248,113,113,.16);color:#fca5a5}

/* ---------------- Listado de proyectos ---------------- */
.proj-list{display:flex;flex-direction:column;gap:7px}
.proj-item{display:flex;align-items:center;gap:11px;padding:10px 12px;background:var(--bg2);
  border:1px solid var(--line);border-radius:11px}
.proj-item .pi-i{font-size:20px}
.proj-item .pi-t{flex:1 1 auto;min-width:0}
.proj-item .pi-t b{display:block;font-size:12.5px}
.proj-item .pi-t small{font-size:10.5px;color:var(--text-mute)}
.proj-item .pi-a{display:flex;gap:4px}
.proj-item .pi-a button{width:28px;height:28px;border-radius:7px;background:var(--panel2);
  color:var(--text-mute);font-size:13px;display:grid;place-items:center}
.proj-item .pi-a button:hover{color:var(--text)}

/* ---------------- Resultado final del reto ---------------- */
.result{text-align:center;padding:10px 0}
.result .r-ico{font-size:52px;margin-bottom:6px}
.result h3{font-size:18px;margin-bottom:6px}
.result p{font-size:13px;color:var(--text-dim);line-height:1.65;margin-bottom:12px}
.result .r-score{font-family:var(--mono);font-size:32px;color:var(--acc);font-weight:700}
.result .r-stats{display:flex;gap:16px;justify-content:center;margin:12px 0;flex-wrap:wrap}
.result .r-stats div{background:var(--bg2);border:1px solid var(--line);border-radius:11px;padding:9px 15px}
.result .r-stats b{display:block;font-size:17px;color:var(--text)}
.result .r-stats small{font-size:10.5px;color:var(--text-mute)}

/* ---------------- Animaciones didácticas ---------------- */
.anim-dot{fill:#fbbf24}
.anim-flow{stroke-dasharray:6 10;animation:flowmove 1s linear infinite}
.blink-hl{animation:blinkhl 1.2s ease-in-out infinite}
@keyframes blinkhl{0%,100%{opacity:.25}50%{opacity:1}}
.legend{display:flex;gap:12px;flex-wrap:wrap;font-size:11px;color:var(--text-mute);margin-top:8px}
.legend i{display:inline-block;width:12px;height:4px;border-radius:2px;margin-right:5px;vertical-align:middle}

/* ============================================================
   Cuenta del estudiante y panel del aula (js/storage/cuenta.js)
   ============================================================ */
.tb-btn.cuenta{max-width:150px}
.tb-btn.cuenta i{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
/* En pantallas angostas style.css oculta todas las etiquetas de la barra.
   Aqui se recupera la del nombre: en un PC compartido saber quien tiene la
   sesion abierta importa mas que ahorrar 60 px. */
.tb-btn.cuenta.conectado i{display:inline!important;max-width:96px}
.tb-btn.cuenta.conectado{background:color-mix(in srgb,var(--ok) 18%,transparent);
  border-color:color-mix(in srgb,var(--ok) 45%,transparent)}

.cu-lbl{display:block;margin:12px 0 0;font-size:12px;color:var(--text-mute)}
.cu-lbl input,.cu-lbl textarea{display:block;width:100%;margin-top:5px;padding:9px 11px;
  font:inherit;font-size:14px;color:var(--text);background:var(--bg);
  border:1px solid var(--line);border-radius:var(--r)}
.cu-lbl input:focus,.cu-lbl textarea:focus{outline:2px solid var(--acc);outline-offset:1px}
.cu-lbl textarea{resize:vertical;min-height:64px}

.cu-msg{margin-top:12px;padding:9px 11px;border-radius:var(--r);font-size:13px}
.cu-msg.error{background:color-mix(in srgb,var(--err) 14%,transparent);
  color:var(--err);border:1px solid color-mix(in srgb,var(--err) 35%,transparent)}
.cu-msg.cargando{background:color-mix(in srgb,var(--acc) 12%,transparent);color:var(--text-mute)}

.cu-hola{font-size:16px;margin-bottom:4px}
.cu-hola small{color:var(--text-mute)}
.cu-pie{margin-top:14px;font-size:12px;color:var(--text-mute)}

.cu-ficha{display:flex;align-items:center;gap:12px;padding:12px;margin-bottom:14px;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r)}
.cu-avatar{font-size:30px;line-height:1}
.cu-ficha b{display:block;font-size:15px}
.cu-ficha small{color:var(--text-mute)}
.cu-acciones{margin-top:4px}

.pi-com{display:block;margin-top:3px;color:var(--text-mute);font-style:italic}

/* ---------- Identificación por PC asignado y envío al docente (v1.26) ---------- */
.tb-btn.cuenta.por-pc{max-width:210px}
.tb-btn.cuenta.por-pc i{max-width:150px}
.tb-btn.enviar-doc{border:1px solid color-mix(in srgb,var(--acc) 45%,transparent);
  background:color-mix(in srgb,var(--acc) 14%,transparent);color:var(--text)}
.tb-btn.enviar-doc i{display:inline!important}
@media (max-width:900px){.tb-btn.enviar-doc i{display:none!important}}

.cu-pc b{display:block;font-size:15px}
.cu-pc small{display:block;margin-bottom:6px}
.cu-datos{display:flex;flex-wrap:wrap;gap:6px 14px;margin-top:4px;font-size:12.5px;color:var(--text-mute)}

.cu-presentes{display:grid;gap:8px;margin-top:10px}
.cu-presentes label{display:flex;align-items:center;gap:8px;padding:9px 11px;cursor:pointer;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r)}
.cu-presentes small{margin-left:auto;color:var(--text-mute)}

.cu-resumen{display:grid;gap:6px;margin-top:14px;padding:12px;font-size:13px;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r)}
.cu-resumen div{display:flex;gap:10px}
.cu-resumen span{flex:0 0 92px;color:var(--text-mute)}
.cu-resumen b{font-weight:600;min-width:0;overflow-wrap:anywhere}

.cu-estado{display:inline-block;margin-left:6px;padding:1px 8px;border-radius:99px;font-size:11px;
  font-weight:600;vertical-align:middle;border:1px solid transparent}
.cu-estado.pendiente{color:var(--text-mute);border-color:var(--line)}
.cu-estado.enviado{color:var(--warn);border-color:color-mix(in srgb,var(--warn) 45%,transparent)}
.cu-estado.revisado{color:var(--ok);border-color:color-mix(in srgb,var(--ok) 45%,transparent)}
.cu-sel{padding:4px 8px;font:inherit;font-size:12.5px;color:var(--text);background:var(--bg);
  border:1px solid var(--line);border-radius:var(--r)}
.diagram .dg-txt{fill:var(--text)}

/* ---------- Ensamblajes del docente (ensamblajes.js · guardarProyectoComo) ---------- */
.ens-guardar{display:block;width:100%;margin:0 0 10px}
.ec-propio{display:inline-block;padding:0 5px;border-radius:5px;background:rgba(124,58,237,.16);color:#8b5cf6;font-size:9.5px;font-weight:700;letter-spacing:.3px;vertical-align:1px;text-transform:uppercase}
.ens-guardar-fila{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:0 0 10px;font-size:11.5px;color:var(--text-mute)}
.ge-fila{display:flex;gap:10px;align-items:flex-end}
.ge-fila>div{flex:1;min-width:0}
.ge-fila>.ge-emoji{flex:0 0 64px}
.ge-fila>.ge-nivel{flex:0 0 110px}
.ge-emoji input{text-align:center;font-size:16px}
.ge-radios{display:flex;flex-direction:column;gap:4px;font-size:12.5px}
.ge-radios label,.ge-check{display:flex;align-items:center;gap:7px;font-size:12.5px;color:var(--text-dim);margin:0 0 6px;cursor:pointer}
.form-row .ge-radios label{margin:0}
.btn.danger{color:#ef4444}
.proj-item .pi-t small.cu-linea{display:block;margin-top:2px}