/* biblioteca.css — extraído de index.html (líneas 689-757). Orden preservado: NO reordenar los <link>. */
  /* ===== Biblioteca: sub-pestañas ===== */
  .lib-tabs{display:flex;gap:8px;margin-top:18px;background:var(--card-2);padding:5px;border-radius:14px}
  .lib-tab{flex:1;border:0;background:none;font:inherit;font-weight:700;font-size:14px;color:var(--muted);padding:10px;border-radius:10px;cursor:pointer;transition:.18s}
  .lib-tab.on{background:var(--accent);color:#14180c}
  .bloque-card{border:1px solid var(--line);border-radius:16px;padding:15px 16px;margin-bottom:11px;background:var(--card)}
  .bloque-card .bc-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
  .bloque-card .bc-name{font-family:'DM Sans';font-weight:700;font-size:15.5px}
  .bloque-card .bc-meta{font-size:12px;color:var(--muted);margin-top:2px}
  .bloque-card .bc-actions{display:flex;gap:8px;margin-top:12px}
  .bloque-ex-line{display:flex;align-items:center;gap:10px;padding:9px 0;border-bottom:1px solid var(--line)}
  .bloque-ex-line:last-child{border-bottom:0}
  .bloque-ex-line .bel-gi{width:30px;height:30px;border-radius:9px;flex:0 0 auto;display:grid;place-items:center;font-size:10px;font-weight:800;color:#14180c}
  .bloque-ex-line b{flex:1;font-size:13.5px;font-weight:600}
  .bloque-ex-line .bel-sr{font-size:12px;color:var(--muted);white-space:nowrap}
  .bloque-ex-line .bel-del{width:28px;height:28px;border-radius:8px;border:1px solid var(--line);background:var(--bg);color:var(--muted-2);font-size:14px;cursor:pointer;display:grid;place-items:center;flex:0 0 auto}
  /* Historial de entrenamientos (alumna) */
  .hist-day{border:1px solid var(--line);border-radius:14px;margin-bottom:9px;background:var(--card);overflow:hidden}
  .hist-day.open{border-color:#3c4a24}
  .hist-head{width:100%;display:flex;align-items:center;gap:12px;background:none;border:0;cursor:pointer;padding:12px 14px;text-align:left;font:inherit;color:var(--cream)}
  .hist-head .hh-date{min-width:62px;flex:0 0 auto;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--accent-soft);border:1px solid #3c4a24;border-radius:11px;padding:6px 4px;line-height:1}
  .hist-head .hh-date .hd-d{font-family:'DM Sans';font-weight:800;font-size:18px;color:#3f5a06}
  .hist-head .hh-date .hd-m{font-size:9.5px;font-weight:800;letter-spacing:.4px;text-transform:uppercase;color:#3f5a06;margin-top:2px}
  .hist-head .hh-info{flex:1;min-width:0}
  .hist-head .hh-info b{font-size:14.5px;font-weight:700;display:block;font-family:'DM Sans'}
  .hist-head .hh-info small{font-size:11.5px;color:var(--muted);display:block;margin-top:3px}
  .hist-head .hh-arrow{flex:0 0 auto;color:var(--muted-2);font-size:13px;transition:transform .25s ease}
  .hist-day.open .hh-arrow{transform:rotate(180deg)}
  .hist-body{display:none;padding:2px 14px 13px;border-top:1px solid var(--line)}
  .hist-day.open .hist-body{display:block;animation:rise .3s ease both}
  .hist-ex{padding:11px 0;border-bottom:1px solid var(--line)}
  .hist-ex:last-child{border-bottom:0}
  .hist-ex .he-name{font-family:'DM Sans';font-weight:700;font-size:13.5px;display:flex;align-items:center;gap:8px}
  .hist-ex .he-name .he-cnt{font-size:11px;font-weight:700;color:var(--muted);background:var(--card-2);border:1px solid var(--line);border-radius:999px;padding:2px 8px}
  .hist-set{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);margin-top:6px}
  .hist-set .hs-n{min-width:54px;color:var(--muted-2);font-size:11px}
  .hist-set .hs-v{color:var(--cream);font-weight:600}
  .hist-set .hs-ok{margin-left:auto;font-size:11px}
  .hist-note{font-size:11.5px;color:var(--muted);margin-top:8px;padding:8px 10px;background:var(--card-2);border:1px solid var(--line);border-radius:10px;line-height:1.45}
  .hist-reply{font-size:11.5px;color:#3f5a06;margin-top:6px;padding:8px 10px;background:var(--accent-soft);border:1px solid #3c4a24;border-radius:10px;line-height:1.45}
  /* Biserie / superset */
  .ex.in-superset{border-left:3px solid var(--accent)}
  .sup-chip{display:inline-flex;align-items:center;gap:5px;font-size:10.5px;font-weight:800;letter-spacing:.3px;text-transform:uppercase;color:#3f5a06;background:var(--accent-soft);border:1px solid #3c4a24;border-radius:999px;padding:3px 10px;margin-bottom:9px}
  .sup-hint{font-size:11.5px;color:var(--muted);margin:-2px 0 9px;line-height:1.45}
  .sup-toggle{width:100%;margin-top:9px;display:flex;flex-direction:column;align-items:flex-start;gap:2px;padding:10px 13px;border-radius:12px;border:1px dashed var(--line);background:var(--bg);color:var(--muted-2);cursor:pointer;font:inherit;text-align:left;transition:all .15s}
  .sup-toggle span{font-size:12.5px;font-weight:700}
  .sup-toggle small{font-size:10.5px;color:var(--muted-2)}
  .sup-toggle.on{border-style:solid;border-color:#3c4a24;background:var(--accent-soft);color:#3f5a06}
  .sup-toggle.on small{color:#3f5a06;opacity:.85}
  .hist-vol{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:700;color:#3f5a06;background:var(--accent-soft);border:1px solid #3c4a24;border-radius:999px;padding:3px 9px;margin-top:8px}

  /* ===== Selector de día (alumna) ===== */
  .day-picker{display:flex;gap:7px;margin-top:14px;overflow-x:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch}
  .day-picker::-webkit-scrollbar{display:none}
  .day-picker button{flex:0 0 auto;border:1px solid var(--line);background:var(--card);color:var(--muted);font:inherit;font-weight:700;font-size:13px;padding:9px 15px;border-radius:11px;cursor:pointer;transition:.15s;white-space:nowrap}
  .day-picker button.on{background:var(--accent);color:#14180c;border-color:var(--accent)}
  .day-picker button .dp-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-left:6px;vertical-align:middle}
  .day-picker button.on .dp-dot{background:#14180c}

  /* ===== Banda de contraindicación ===== */
  .contra-band{display:flex;align-items:flex-start;gap:12px;background:#fdeaea;border:1.5px solid #f0b8b8;border-radius:14px;padding:13px 15px;margin-top:14px;cursor:pointer;transition:.15s}
  .contra-band:active{transform:scale(.99)}
  .contra-band.empty{background:var(--card-2);border:1px dashed var(--line)}
  .contra-band .cb-ico{font-size:20px;flex:0 0 auto;line-height:1.2}
  .contra-band .cb-txt{flex:1;min-width:0}
  .contra-band .cb-txt b{font-family:'DM Sans';font-weight:700;font-size:13.5px;color:#b3261e;display:block}
  .contra-band.empty .cb-txt b{color:var(--muted)}
  .contra-band .cb-txt p{font-size:13px;color:#7a1d17;margin-top:3px;line-height:1.45}
  .contra-band.empty .cb-txt p{color:var(--muted-2)}
  .contra-band .cb-edit{font-size:11px;font-weight:800;color:#b3261e;text-transform:uppercase;letter-spacing:.5px;flex:0 0 auto;align-self:center}