:root{
    --bg:#0f1419; --card:#1a2129; --card2:#212a35; --border:#2d3844;
    --text:#e8edf2; --muted:#8899a6; --accent:#2dd882; --accent2:#1fa968;
    --warn:#f0a832; --danger:#e5534b; --info:#58a6ff;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  body{background:var(--bg);color:var(--text);font-family:-apple-system,'Segoe UI',Roboto,sans-serif;font-size:15px;line-height:1.5}
  #app{max-width:860px;margin:0 auto;padding:16px 12px 84px}
  header{display:flex;align-items:baseline;gap:10px;padding:8px 4px 16px}
  header h1{font-size:22px;color:var(--accent)}
  header span{color:var(--muted);font-size:13px}

  /* ---------- Navegación inferior de 4 secciones (D1, v0.6) ---------- */
  nav.bottomnav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:860px;z-index:50;
    display:flex;gap:2px;background:var(--card);border-top:1px solid var(--border);
    padding:4px 6px calc(4px + env(safe-area-inset-bottom))}
  nav.bottomnav button{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
    min-height:48px;background:none;border:1px solid transparent;color:var(--muted);font-size:11px;padding:6px 2px;border-radius:10px;cursor:pointer}
  nav.bottomnav button .navicon{font-size:19px;line-height:1}
  nav.bottomnav button.active{color:var(--accent);background:var(--card2)}

  /* Sub-navegación interna (Progreso, Ajustes): pastillas horizontales, no fija */
  nav.subnav{display:flex;gap:6px;margin-bottom:14px;overflow-x:auto}
  nav.subnav button{background:var(--card2);border:1px solid var(--border);color:var(--muted);padding:8px 14px;
    border-radius:20px;font-size:13px;cursor:pointer;white-space:nowrap;min-height:36px}
  nav.subnav button.active{color:var(--accent);border-color:var(--accent)}

  /* Barra de acción fija de Hoy (D2): sobre la navegación inferior */
  .action-bar{position:fixed;bottom:60px;left:50%;transform:translateX(-50%);width:100%;max-width:860px;z-index:45;
    display:flex;gap:10px;padding:10px 12px;background:var(--card);border-top:1px solid var(--border)}
  .action-bar .btn{margin:0}

  /* Tira semanal lun-dom de Hoy (D2) */
  .weekstrip{display:flex;justify-content:space-between;gap:4px}
  .daypip{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:6px 2px;border-radius:8px;color:var(--muted)}
  .daypip .dow{font-size:11px}
  .daypip .pip{width:22px;height:22px;border-radius:50%;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:12px}
  .daypip.today{color:var(--text)}
  .daypip.today .pip{border-color:var(--accent)}
  .daypip.done .pip{background:var(--accent2);border-color:var(--accent2);color:#fff}
  .weeksummary{display:flex;justify-content:space-between;align-items:center;margin-top:10px;font-size:13px;color:var(--muted);flex-wrap:wrap;gap:6px}
  .card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px;margin-bottom:12px}
  .card h2{font-size:16px;margin-bottom:10px;color:var(--accent)}
  .card h3{font-size:14px;margin:12px 0 6px;color:var(--info)}
  .muted{color:var(--muted);font-size:13px}
  label{display:block;font-size:13px;color:var(--muted);margin:10px 0 4px}
  input[type=text],input[type=number],select{background:var(--card2);border:1px solid var(--border);color:var(--text);border-radius:8px;padding:8px 10px;font-size:14px;width:100%;max-width:320px}
  input[type=number]{max-width:90px}
  .btn{background:var(--accent2);color:#fff;border:none;border-radius:8px;padding:10px 16px;font-size:14px;cursor:pointer;margin-top:12px}
  .btn:hover{background:var(--accent)}
  .btn.secondary{background:var(--card2);border:1px solid var(--border);color:var(--text)}
  .btn.danger{background:var(--danger)}
  .btn.small{padding:5px 10px;font-size:13px;margin-top:0}
  .chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
  .chip{display:flex;align-items:center;gap:6px;background:var(--card2);border:1px solid var(--border);border-radius:20px;padding:6px 12px;font-size:13px;cursor:pointer;user-select:none}
  .chip.on{border-color:var(--accent);color:var(--accent)}
  .exrow{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid var(--border);gap:8px;flex-wrap:wrap}
  .exrow:last-child{border-bottom:none}
  .exrow .name{font-weight:600}
  .exrow .dose{color:var(--muted);font-size:13px}
  .tag{font-size:11px;padding:2px 8px;border-radius:10px;background:var(--card2);border:1px solid var(--border);color:var(--muted);margin-left:6px}
  .tag.skill{color:var(--warn);border-color:var(--warn)}
  .tag.prev{color:var(--info);border-color:var(--info)}
  .setline{display:flex;gap:8px;align-items:center;margin:6px 0;flex-wrap:wrap}
  .setline span{font-size:13px;color:var(--muted);width:52px}
  .alert{border-left:3px solid var(--warn);background:var(--card2);padding:10px 12px;border-radius:0 8px 8px 0;margin:8px 0;font-size:13px}
  .alert.red{border-color:var(--danger)}
  .alert.green{border-color:var(--accent)}
  .node{display:flex;gap:10px;align-items:center;padding:8px 10px;border-radius:8px;margin:4px 0}
  .node.done{color:var(--muted)}
  .node.current{background:var(--card2);border:1px solid var(--accent)}
  .node .dot{width:10px;height:10px;border-radius:50%;background:var(--border);flex-shrink:0}
  .node.done .dot{background:var(--accent2)}
  .node.current .dot{background:var(--accent)}
  .bar{height:6px;background:var(--card2);border-radius:3px;overflow:hidden;margin-top:4px}
  .bar>div{height:100%;background:var(--accent2)}
  .bar.work>div{background:var(--info)}
  .grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
  @media(max-width:600px){.grid2{grid-template-columns:1fr}}
  .logitem{padding:10px 0;border-bottom:1px solid var(--border);font-size:14px}
  .logitem:last-child{border-bottom:none}
  .rule{font-size:12px;color:var(--warn);font-family:monospace}
  .painrow{display:flex;align-items:center;gap:10px;margin:6px 0}
  .painrow span{width:90px;font-size:13px;color:var(--muted)}
  .painrow input[type=range]{flex:1;max-width:220px}
  .painval{width:24px;text-align:center;font-weight:600}
  .gamebar{display:flex;align-items:center;gap:14px;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:10px 14px;margin-bottom:14px;flex-wrap:wrap}
  .gamebar .lvl{font-size:18px;font-weight:700;color:var(--accent)}
  .gamebar .xpbar{flex:1;min-width:120px}
  .gamebar .streak{font-size:15px;font-weight:600}
  .gamebar .rank{font-size:13px;color:var(--warn);border:1px solid var(--warn);border-radius:10px;padding:2px 10px}
  .badges{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;margin-top:10px}
  .badge{background:var(--card2);border:1px solid var(--border);border-radius:10px;padding:10px;text-align:center;font-size:12px}
  .badge.locked{opacity:.35;filter:grayscale(1)}
  .badge .ic{font-size:26px}
  .badge .nm{font-weight:600;margin:4px 0 2px;font-size:13px}
  table.std{width:100%;border-collapse:collapse;font-size:13px;margin-top:8px}
  table.std th,table.std td{border-bottom:1px solid var(--border);padding:6px 8px;text-align:center}
  table.std th{color:var(--muted);font-weight:600}
  table.std td:first-child,table.std th:first-child{text-align:left}
  .rankhit{color:var(--accent);font-weight:700}
  textarea{background:var(--card2);border:1px solid var(--border);color:var(--text);border-radius:8px;padding:8px;width:100%;font-size:13px;font-family:inherit}

  /* ---------- Sesión en vivo (D4) ---------- */
  .focus-head{padding-bottom:12px}
  .focus-top{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}
  .focus-xp{font-size:14px;font-weight:700;color:var(--accent);white-space:nowrap}
  .live-globalprogress{margin-top:10px}
  .live-globalprogress .bar{margin-top:0}
  .focus-actions{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:14px;flex-wrap:wrap}
  .linklike{background:none;border:none;color:var(--muted);font-size:13px;text-decoration:underline;cursor:pointer;padding:12px 8px;min-height:44px}
  .linklike:active{color:var(--danger)}
  .live-progress{color:var(--muted);font-size:13px;margin-bottom:4px}
  .live-exname{font-size:22px;font-weight:700;color:var(--accent);margin-bottom:2px}
  .live-dose{color:var(--muted);font-size:14px;margin-bottom:14px}
  .live-next{color:var(--muted);font-size:13px;margin-top:16px;border-top:1px solid var(--border);padding-top:10px}
  .stepper{display:flex;align-items:center;justify-content:center;gap:20px;margin:18px 0}
  .stepper button{width:56px;height:56px;min-width:44px;min-height:44px;border-radius:50%;font-size:26px;background:var(--card2);border:1px solid var(--border);color:var(--text);cursor:pointer}
  .stepper button:active{background:var(--accent2);color:#fff}
  .stepper .val{font-size:38px;font-weight:700;min-width:80px;text-align:center;font-variant-numeric:tabular-nums}
  .rir-picker{display:flex;gap:8px;justify-content:center;margin:10px 0 18px;flex-wrap:wrap}
  .rir-picker button{width:44px;height:44px;border-radius:8px;background:var(--card2);border:1px solid var(--border);color:var(--text);font-size:15px;cursor:pointer}
  .rir-picker button.on{border-color:var(--accent);color:var(--accent)}
  .bigtimer{font-size:52px;font-weight:800;text-align:center;margin:18px 0;font-variant-numeric:tabular-nums}
  .bigtimer.prep{color:var(--warn)}
  .bigtimer.hold{color:var(--accent)}
  .bigtimer.hold.gold{color:#ffd23f;text-shadow:0 0 14px rgba(255,210,63,.45)}
  .bigtimer.rest{color:var(--info)}
  .livebtn{display:block;width:100%;min-height:44px;padding:16px;font-size:17px;border-radius:12px;margin-top:12px;cursor:pointer;border:none}
  .livebtn.primary{background:var(--accent2);color:#fff}
  .livebtn.primary:hover{background:var(--accent)}
  .livebtn.secondary{background:var(--card2);color:var(--text);border:1px solid var(--border)}
  .quality-btns{display:flex;flex-direction:column;gap:10px;margin-top:14px}
  .quality-btns button{min-height:44px;padding:14px;font-size:16px;border-radius:12px;border:1px solid var(--border);background:var(--card2);color:var(--text);cursor:pointer;text-align:left}
  .quality-btns button.limpia{border-color:var(--accent)}
  .quality-btns button.irregular{border-color:var(--warn)}
  .quality-btns button.fallida{border-color:var(--danger)}

  /* ---------- Caras de feedback (D5, v0.5) ---------- */
  .face-picker{display:flex;justify-content:space-between;gap:6px;margin:8px 0 4px}
  .face-btn{flex:1;min-height:64px;min-width:44px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;background:var(--card2);border:1px solid var(--border);border-radius:10px;cursor:pointer;padding:8px 2px}
  .face-btn.on{border-color:var(--accent);background:rgba(45,216,130,.12)}
  .face-emoji{font-size:26px;line-height:1}
  .face-label{font-size:10px;color:var(--muted)}
  .face-btn.on .face-label{color:var(--accent)}

  /* ---------- Instrucciones (howto, D5) ---------- */
  .exrow-head{display:flex;align-items:center;gap:2px;flex-wrap:wrap}
  .info-btn{width:44px;height:44px;min-width:44px;min-height:44px;display:inline-flex;align-items:center;justify-content:center;background:none;border:none;color:var(--info);font-size:17px;cursor:pointer;border-radius:50%;flex-shrink:0}
  .info-btn:active{background:var(--card2)}
  .howto{background:var(--card2);border:1px solid var(--border);border-radius:8px;padding:10px 12px;margin:2px 0 8px;font-size:13px;line-height:1.5;color:var(--text)}
  /* Objetivo táctil ≥44px en los controles nuevos de la sesión en vivo (D3/D4) */
  .bigtap{min-height:44px;min-width:44px;padding:11px 16px}

  /* ---------- Mapa de calor muscular (D4, v0.5) ---------- */
  .heat-zone{cursor:pointer;transition:opacity .15s}
  .heat-zone:active{opacity:.75}
  .heat-legend{display:flex;align-items:center;gap:6px;margin-top:12px;flex-wrap:wrap}
  .heat-legend .swatch{width:18px;height:14px;border-radius:3px;flex-shrink:0}
  .heat-legend span.muted{font-size:11px}

  /* ---------- Categorías de skills (D1, v0.5): Push · Pull · Legs · Core ---------- */
  .cat-label{font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;margin:14px 2px 6px}
  .cat-label:first-child{margin-top:0}
  .cat-heading{font-size:15px;font-weight:700;color:var(--info);text-transform:uppercase;letter-spacing:.03em;margin:18px 4px 8px}
  .cat-heading:first-child{margin-top:0}

  /* ---------- Metadatos de sesión + enfoque muscular (D3/D4, v0.6) ---------- */
  .sessionmeta{margin:10px 0 14px;padding:10px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
  .metaicons{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted)}
  .metaitem{overflow-wrap:break-word}
  .minimap{display:flex;gap:6px;margin-top:10px;justify-content:center}
  .minimap>div{flex:1;max-width:70px}
  .minimap svg{width:100%;height:auto}

  /* ---------- Calentamiento/enfriamiento estructurados (D6, v0.6) ---------- */
  .circuit-block{margin:12px 0}
  .circuit-list{margin-top:6px}
  .circuit-item{font-size:13px;color:var(--text);padding:6px 0;border-bottom:1px solid var(--border)}
  .circuit-item:last-child{border-bottom:none}