/* ============================================================
   Aprende español con Panpan — estilos compartidos de la aplicación
   (páginas servidas con el layout: curso, lección, login, registro)
   ============================================================ */

/* ---- Base y mensajes flash ---- */
*{box-sizing:border-box}
body{margin:0;background:#fbf7ef;color:#23201b;
  font-family:"Segoe UI",system-ui,-apple-system,"Helvetica Neue",sans-serif;line-height:1.6}

.message{max-width:920px;margin:1rem auto;padding:.8rem 1.1rem;border-radius:12px;font-size:.92rem;
  font-weight:600;box-shadow:0 6px 22px -16px rgba(60,40,20,.4)}
.message.success{background:#e2f0e9;color:#1f6f5c;border:1px solid #b9dccd}
.message.error{background:#fbe1da;color:#c2502f;border:1px solid #eebfb2}
.message.warning,.message.info{background:#f6efe0;color:#8a6d1f;border:1px solid #e6d6ad}
.message.hidden{display:none}

/* ============================================================
   Índice del curso (.pan-course)
   ============================================================ */
.pan-course{--ink:#23201b;--paper:#fbf7ef;--card:#fff;--terra:#c2502f;--jade:#1f6f5c;--gold:#c08a2d;
  --line:#e4ddcf;--muted:#857c6c;--soft:#f0ebe0;
  font-family:"Segoe UI",system-ui,-apple-system,sans-serif;color:var(--ink);max-width:920px;margin:0 auto;padding:1rem 1.2rem 3rem}
.pan-course .zh{font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif}
.pan-course a{text-decoration:none;color:inherit}

/* cabecera */
.pc-head{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;margin-bottom:1.2rem}
.pc-head .greet{flex:1 1 240px}
.pc-head h1{font-size:1.5rem;margin:0}
.pc-head .sub{color:var(--muted);font-size:.92rem}
.pc-head .zh-sub{color:var(--jade)}
.pc-pan{width:56px;height:56px;flex:0 0 auto}
.pc-home{display:inline-flex;flex:0 0 auto;line-height:0}

/* breadcrumb de lección */
.pc-breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:.4rem;margin-bottom:1rem;font-size:.9rem}
.pc-breadcrumb a{color:var(--jade);font-weight:700;text-decoration:none}
.pc-breadcrumb a:hover{text-decoration:underline}
.pc-breadcrumb .sep{color:var(--muted)}
.pc-breadcrumb .current{color:var(--ink);font-weight:600}
.pc-breadcrumb .zh{font-size:.8rem;color:var(--muted);font-weight:600}

/* contenido de la lección inyectado en línea */
.pc-lesson-content{margin-top:.4rem}

/* ---- Animación de recompensa (XP + insignias) ---- */
.pc-reward{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;
  background:rgba(35,32,27,.55);backdrop-filter:blur(3px);animation:pc-fade .25s ease both;padding:1rem}
.pc-reward.closing{animation:pc-fade .35s ease both reverse}
.pc-reward-card{background:#fff;border-radius:22px;padding:2rem 1.8rem 1.6rem;max-width:380px;width:100%;text-align:center;
  box-shadow:0 30px 70px -25px rgba(60,40,20,.7);animation:pc-pop .5s cubic-bezier(.2,1.3,.5,1) both;position:relative;overflow:hidden}
.pc-reward-card::before{content:"";position:absolute;inset:-40% -10% auto;height:60%;
  background:radial-gradient(circle at 50% 0,var(--gold-soft,#f0d9a7),transparent 70%);opacity:.7}
.pc-reward-emoji{font-size:3rem;line-height:1;animation:pc-bounce 1.2s ease infinite}
.pc-reward-card h2{font-size:1.25rem;margin:.4rem 0 .2rem;position:relative}
.pc-reward-card h2 .zh{display:block;font-size:.85rem;font-weight:700;color:var(--jade)}
.pc-reward-xp{display:inline-block;margin:.6rem 0;font-size:1.6rem;font-weight:800;color:var(--gold);
  animation:pc-pop .6s .15s cubic-bezier(.2,1.3,.5,1) both}
.pc-reward-badges{margin-top:.6rem;border-top:1px dashed var(--line);padding-top:.9rem}
.pc-reward-badges-title{font-size:.85rem;font-weight:800;color:var(--terra);margin-bottom:.6rem}
.pc-reward-badges-title .zh{color:var(--muted);font-weight:700}
.pc-reward-badge-list{display:flex;flex-wrap:wrap;gap:.7rem;justify-content:center}
.pc-reward-badge{display:flex;flex-direction:column;align-items:center;gap:.2rem;width:96px;
  animation:pc-pop .6s .3s cubic-bezier(.2,1.3,.5,1) both}
.pc-reward-badge .ico{font-size:2rem}
.pc-reward-badge .lbl{font-size:.7rem;font-weight:700;line-height:1.15}
.pc-reward-badge .lbl .zh{display:block;color:var(--jade);font-weight:600}
.pc-reward-close{margin-top:1.2rem;border:0;cursor:pointer;background:var(--terra);color:#fff;font-family:inherit;
  font-weight:800;padding:.6rem 1.4rem;border-radius:99px;font-size:.95rem}
.pc-reward-close .zh{font-weight:700;opacity:.9}
@keyframes pc-fade{from{opacity:0}to{opacity:1}}
@keyframes pc-pop{from{opacity:0;transform:scale(.6)}to{opacity:1;transform:scale(1)}}
@keyframes pc-bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@media(prefers-reduced-motion:reduce){
  .pc-reward,.pc-reward-card,.pc-reward-emoji,.pc-reward-xp,.pc-reward-badge{animation:none}
}
.pc-logout{align-self:flex-start;font-size:.82rem;font-weight:700;color:var(--muted);border:1.5px solid var(--line);
  border-radius:99px;padding:.35rem .8rem}
.pc-logout:hover{border-color:var(--terra);color:var(--terra)}
.pc-buy{align-self:flex-start;font-size:.82rem;font-weight:800;color:#fff;background:var(--gold);border:1.5px solid var(--gold);
  border-radius:99px;padding:.4rem .9rem;white-space:nowrap}
.pc-buy:hover{background:#a9781f;border-color:#a9781f}
.pc-admin{align-self:flex-start;font-size:.82rem;font-weight:800;color:var(--ink);background:#fff;border:1.5px solid var(--ink);
  border-radius:99px;padding:.35rem .8rem;white-space:nowrap}
.pc-admin:hover{background:var(--ink);color:#fff}

/* barra de progreso global */
.pc-progress{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:1rem 1.2rem;margin-bottom:1.6rem;
  box-shadow:0 6px 22px -16px rgba(60,40,20,.4)}
.pc-progress .row{display:flex;justify-content:space-between;font-size:.9rem;margin-bottom:.5rem}
.pc-progress .bar{height:12px;background:var(--soft);border-radius:99px;overflow:hidden}
.pc-progress .bar span{display:block;height:100%;background:linear-gradient(90deg,var(--jade),var(--terra));border-radius:99px}
.pc-progress .now{margin-top:.6rem;font-size:.9rem;color:var(--muted)}
.pc-progress .now b{color:var(--terra)}
.pc-continue{display:inline-block;text-align:center;margin-top:1rem;background:var(--terra);color:#fff;font-weight:800;
  padding:.6rem 1.3rem;border-radius:99px;font-size:.95rem;transition:transform .15s,box-shadow .2s;
  box-shadow:0 6px 18px -8px rgba(194,80,47,.6)}
.pc-continue:hover{transform:translateY(-2px);box-shadow:0 10px 24px -10px rgba(194,80,47,.7)}
.pc-continue .zh{display:block;font-size:.78rem;font-weight:700;opacity:.9;margin-top:.1rem}

/* gamificación: XP e insignias */
.pc-gami{margin-top:1.1rem;padding-top:1rem;border-top:1px dashed var(--line)}
.pc-xp{display:inline-flex;align-items:center;gap:.4rem;font-size:1rem;margin-bottom:.7rem}
.pc-xp .star{font-size:1.15rem}
.pc-xp b{color:var(--gold);font-size:1.2rem}
.pc-xp .zh{font-size:.8rem;color:var(--muted)}
.pc-gami-note{margin:.2rem 0 .9rem;font-size:.82rem;color:#5c5547;line-height:1.5}
.pc-gami-note .zh{display:block;margin-top:.25rem;color:var(--jade);font-size:.78rem}
.pc-badges{display:flex;flex-wrap:wrap;gap:.6rem}
.pc-badge-item{display:flex;flex-direction:column;align-items:center;gap:.2rem;width:76px;text-align:center;
  padding:.5rem .3rem;border-radius:12px;border:1px solid var(--line);background:var(--soft)}
.pc-badge-item .ico{font-size:1.5rem;line-height:1}
.pc-badge-item .lbl{font-size:.64rem;font-weight:700;line-height:1.15}
.pc-badge-item.earned{background:#fff7e6;border-color:var(--gold-soft, #f0d9a7)}
.pc-badge-item.earned .lbl{color:var(--gold)}
.pc-badge-item.locked{opacity:.55;filter:grayscale(1)}
.pc-badge-item.locked .lbl{color:var(--muted)}

/* bloques */
.pc-block{background:var(--card);border:1px solid var(--line);border-radius:18px;margin-bottom:1.1rem;overflow:hidden;
  box-shadow:0 6px 22px -18px rgba(60,40,20,.4)}
.pc-block.locked{opacity:.6}
.pc-block-head{display:flex;align-items:center;gap:.8rem;padding:.9rem 1.1rem;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,#fff,#fdf8ee)}
.pc-block-head .bnum{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-weight:800;color:#fff;background:var(--terra);flex:0 0 auto}
.pc-block.locked .bnum{background:var(--muted)}
.pc-block-head .bt{flex:1}
.pc-block-head .bt .es{font-weight:800}
.pc-block-head .bt .zh{font-size:.82rem;color:var(--jade)}
.pc-badge{font-size:.68rem;font-weight:800;padding:.2rem .55rem;border-radius:99px;white-space:nowrap}
.pc-badge.cefr{background:var(--jade);color:#fff}
.pc-badge.st-completed{background:#e2f0e9;color:var(--jade)}
.pc-badge.st-active{background:#fbe6dd;color:var(--terra)}
.pc-badge.st-locked{background:var(--soft);color:var(--muted)}

/* acordeón de bloques (details/summary) */
.pc-block > summary.pc-block-head{cursor:pointer;list-style:none;user-select:none}
.pc-block > summary.pc-block-head::-webkit-details-marker{display:none}
.pc-block:not([open]) > summary.pc-block-head{border-bottom:0}
.pc-block > summary.pc-block-head:hover{background:linear-gradient(180deg,#fff,#faf1e2)}
.pc-block > summary.pc-block-head:focus-visible{outline:2px solid var(--terra);outline-offset:-2px}
/* pista de "desplegable": flecha en botón circular */
.pc-toggle{display:inline-grid;place-items:center;flex:0 0 auto;width:32px;height:32px;
  border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--jade)}
.pc-toggle .chev{display:block;width:18px;height:18px;background:currentColor;
  -webkit-mask:url(../img/chevron-down.svg) center/contain no-repeat;
  mask:url(../img/chevron-down.svg) center/contain no-repeat;
  transition:transform .2s ease}
.pc-block[open] .pc-toggle .chev{transform:rotate(180deg)}
.pc-block > summary.pc-block-head:hover .pc-toggle{border-color:var(--terra);color:var(--terra)}

/* lecciones */
.pc-lessons{list-style:none;margin:0;padding:.4rem}
.pc-lesson{display:flex;align-items:center;gap:.75rem;padding:.6rem .7rem;border-radius:12px}
.pc-lesson + .pc-lesson{border-top:1px solid var(--line)}
.pc-lesson .ic{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;flex:0 0 auto;font-size:.9rem;font-weight:800}
.pc-lesson.completed .ic{background:var(--jade);color:#fff}
.pc-lesson.current .ic{background:var(--terra);color:#fff;box-shadow:0 0 0 4px #fbe6dd}
.pc-lesson.locked .ic{background:var(--soft);color:var(--muted)}
.pc-lesson .info{flex:1;min-width:0}
.pc-lesson .info .t{font-weight:600;font-size:.96rem}
.pc-lesson .info .zh{font-size:.8rem;color:var(--jade)}
.pc-lesson .info .meta{font-size:.74rem;color:var(--muted)}
.pc-lesson.locked .info{color:var(--muted)}
.pc-lesson.locked .info .zh{color:#a99}
.pc-lesson .act{flex:0 0 auto}
.pc-lesson .btn{display:inline-block;padding:.4rem .85rem;border-radius:99px;font-weight:700;font-size:.82rem}
.pc-lesson .btn.cont{background:var(--terra);color:#fff}
.pc-lesson .btn.rev{background:#fff;border:1.5px solid var(--jade);color:var(--jade)}
.pc-lesson .lockico{color:var(--muted)}
.pc-lesson.current{background:#fffaf4}
.pc-free{font-size:.66rem;font-weight:800;color:var(--gold);border:1px solid var(--gold);border-radius:99px;padding:.05rem .4rem;margin-left:.4rem}

/* enlace de ayuda en la cabecera del curso (mismo formato que Admin/Salir) */
.pc-help-link{align-self:flex-start;font-size:.82rem;font-weight:800;color:var(--jade);background:#fff;
  border:1.5px solid var(--jade);border-radius:99px;padding:.35rem .8rem;white-space:nowrap}
.pc-help-link:hover{background:var(--jade);color:#fff}

/* ============================================================
   Centro de ayuda (.pc-help-*)
   ============================================================ */
.pc-help-intro{margin:1.2rem 0 .6rem}
.pc-help-intro h2{margin:0 0 .2rem;font-size:1.3rem}
.pc-help-intro p{margin:0;color:#5c5547;font-size:.95rem}
.pc-help-form{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:1.1rem 1.2rem;margin:.8rem 0 1.4rem;
  box-shadow:0 6px 22px -18px rgba(60,40,20,.4)}
.pc-help-form label{display:block;font-weight:700;font-size:.82rem;margin:.5rem 0 .25rem}
.hf-row{display:flex;gap:.9rem;flex-wrap:wrap}
.hf-field{display:flex;flex-direction:column}
.hf-field.grow{flex:1;min-width:220px}
.hf-input{font-family:inherit;font-size:.95rem;padding:.55rem .7rem;border:1px solid var(--line);border-radius:10px;background:#fff;width:100%}
.hf-input:focus{outline:2px solid var(--jade);outline-offset:-1px}
textarea.hf-input{resize:vertical}
.hf-actions{margin-top:.9rem}
.hf-btn{cursor:pointer;font-family:inherit;font-weight:700;border:0;background:var(--terra);color:#fff;
  padding:.65rem 1.3rem;border-radius:99px;font-size:.95rem}
.pc-help-list h3{font-size:1.05rem;margin:.4rem 0 .7rem}
.pc-help-empty{color:var(--muted)}
.pc-qcard{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:.9rem 1rem;margin-bottom:.9rem}
.pc-qcard.open{border-left:4px solid var(--terra)}
.pc-qcard.closed{border-left:4px solid var(--jade)}
.qc-head{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;font-size:.74rem}
.qc-cat{font-weight:700;color:var(--jade)}
.qc-status{font-weight:800;padding:.1rem .5rem;border-radius:99px}
.qc-status.st-open{background:#fbe6dd;color:var(--terra)}
.qc-status.st-closed{background:#e2f0e9;color:var(--jade)}
.qc-date{color:var(--muted);margin-left:auto}
.qc-subject{font-weight:700;margin:.45rem 0 .2rem}
.qc-body{white-space:pre-wrap;font-size:.94rem;color:#3f3a30}
.qc-answer{margin-top:.7rem;background:var(--soft);border-radius:10px;padding:.7rem .85rem}
.qc-answer-label{font-size:.72rem;font-weight:800;text-transform:uppercase;letter-spacing:.04em;color:var(--jade);margin-bottom:.25rem}
.qc-answer-body{white-space:pre-wrap;font-size:.94rem;color:#3f3a30}
.qc-pending{margin-top:.55rem;font-size:.8rem;color:var(--muted);font-style:italic}

/* ============================================================
   Vista de lección (.pan-lesson)
   ============================================================ */
.pan-lesson{--ink:#23201b;--terra:#c2502f;--jade:#1f6f5c;--gold:#c08a2d;--line:#e4ddcf;--muted:#857c6c;--soft:#f0ebe0;
  font-family:"Segoe UI",system-ui,sans-serif;color:var(--ink);max-width:760px;margin:0 auto;padding:1.2rem}
.pan-lesson .zh{font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;color:var(--jade)}
.pan-lesson a{color:var(--jade)}
.pl-back{font-size:.9rem;display:inline-block;margin-bottom:1rem}
.pl-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:1.6rem;box-shadow:0 6px 22px -16px rgba(60,40,20,.4)}
.pl-eyebrow{font-size:.76rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--terra)}
.pl-card h1{margin:.3rem 0 .2rem;font-size:1.7rem}
.pl-zh{font-size:1.1rem}
.pl-meta{color:var(--muted);font-size:.9rem;margin:.8rem 0 1.2rem}
.pl-note{background:var(--soft);border-radius:12px;padding:1rem;font-size:.92rem;color:#5c5547}
.pl-actions{margin-top:1.4rem;display:flex;gap:.7rem;flex-wrap:wrap;align-items:center}
.pl-actions button{cursor:pointer;font-family:inherit;font-weight:700;border:0;background:var(--terra);color:#fff;
  padding:.7rem 1.3rem;border-radius:99px;font-size:.95rem}
.pl-actions .done{color:var(--jade);font-weight:700}

/* ============================================================
   Login / Registro (.pan-auth)
   ============================================================ */
.pan-auth{--ink:#23201b;--paper:#fbf7ef;--terra:#c2502f;--jade:#1f6f5c;--gold:#c08a2d;--line:#e4ddcf;--muted:#857c6c;--soft:#f0ebe0;
  font-family:"Segoe UI",system-ui,sans-serif;color:var(--ink);max-width:420px;margin:2.2rem auto;padding:0 1.2rem}
.pan-auth .zh{font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;color:var(--jade)}
.pan-auth a{color:var(--jade)}
.pa-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:1.8rem;box-shadow:0 12px 40px -22px rgba(60,40,20,.5)}
.pa-head{text-align:center;margin-bottom:1.3rem}
.pa-head svg{width:60px;height:60px}
.pa-head h1{font-size:1.4rem;margin:.4rem 0 .1rem}
.pa-head .zh{font-size:.9rem}
.pan-auth label{display:block;font-weight:700;font-size:.85rem;margin:.9rem 0 .3rem}
.pan-auth input{width:100%;padding:.7rem .9rem;border:1.5px solid var(--line);border-radius:12px;font-size:1rem;font-family:inherit}
.pan-auth input:focus{outline:none;border-color:var(--jade)}
.pa-btn{width:100%;margin-top:1.3rem;border:0;cursor:pointer;background:var(--terra);color:#fff;font-family:inherit;
  font-weight:800;padding:.8rem;border-radius:99px;font-size:1rem}
.pa-foot{text-align:center;margin-top:1.1rem;font-size:.9rem;color:var(--muted)}
.pan-auth .error-message{color:var(--terra);font-size:.82rem;margin-top:.25rem}