RESPONSIVE — MOBILE FIRST
══════════════════════════════════════ */
@media(max-width:900px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.mobile-open{transform:none;box-shadow:4px 0 40px rgba(0,0,0,.8)}
  .main-content{margin-left:0}
  .top-bar{left:0;padding:0 16px}
  .page{padding:64px 14px 24px}
  .two-col,.three-col,.form-grid{grid-template-columns:1fr;width:100%}
  .form-full{grid-column:unset}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .stat-card{padding:12px 12px}
  .stat-num{font-size:26px!important;letter-spacing:0}
  .stat-icon{font-size:16px;margin-bottom:6px}
  .stat-label{font-size:10px;letter-spacing:.5px}
  .page-header{margin-bottom:18px}
  .ph-left .page-title{font-size:32px}
  .ph-right{width:100%}
  .ph-right .btn{flex:1;justify-content:center}

  /* Tablas → cards en mobile */
  .table-wrap{background:transparent;border:none;border-radius:0;overflow:hidden;width:100%}
  .table-toolbar{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:10px;padding:12px 14px}
  table thead{display:none}
  table tbody tr{
    display:flex;flex-direction:column;
    background:var(--surface);border:1px solid var(--border);
    border-radius:var(--radius);margin-bottom:10px;padding:14px 16px;
    position:relative
  }
  table tbody tr:hover td{background:transparent}
  table tbody td{
    display:flex;align-items:center;justify-content:space-between;
    padding:5px 0;border:none;font-size:13px;min-width:0;gap:8px
  }
  table tbody td:before{
    content:attr(data-label);
    font-size:10px;text-transform:uppercase;letter-spacing:1.5px;
    color:var(--muted);font-weight:600;flex-shrink:0;white-space:nowrap
  }
  table tbody td:not([data-label]):before{display:none}
  table tbody td:first-child{font-size:14px;border-bottom:1px solid var(--border);padding-bottom:10px;margin-bottom:4px}
  table tbody td:last-child{margin-top:4px;border-top:1px solid var(--border);padding-top:8px;justify-content:flex-end}
  table tbody td > *{min-width:0;max-width:100%}
  table tbody td .flex-gap, table tbody td > div{justify-content:flex-end;width:100%;flex-wrap:wrap}

  /* Modals fullscreen en mobile */
  .modal-overlay{padding:0;align-items:flex-end}
  .modal{
    max-width:100%;width:100%;max-height:92vh;
    border-radius:var(--radius-lg) var(--radius-lg) 0 0;
    border-bottom:none
  }
  .modal-lg,.modal-xl{max-width:100%}
  .modal-header{
    position:sticky;top:0;
    border-radius:var(--radius-lg) var(--radius-lg) 0 0;
  }
  /* Drag handle visual */
  .modal-header::before{
    content:'';display:block;width:40px;height:4px;
    background:var(--border2);border-radius:4px;
    margin:0 auto 12px;
  }

  /* Sidebar overlay backdrop */
  .sidebar-backdrop{
    display:none;position:fixed;inset:0;
    background:rgba(0,0,0,.6);z-index:199;backdrop-filter:blur(2px)
  }
  .sidebar.mobile-open~.sidebar-backdrop{display:block}

  /* Bottom nav mobile */
  .mobile-bottom-nav{
    display:flex;position:fixed;bottom:0;left:0;right:0;
    background:var(--surface);border-top:1px solid var(--border);
    z-index:180;padding:6px 0 max(6px,env(safe-area-inset-bottom));
  }
  .mobile-bottom-nav .mbn-item{
    flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;
    padding:6px 4px;cursor:pointer;color:var(--muted2);font-size:9px;
    letter-spacing:.5px;text-transform:uppercase;transition:color var(--transition)
  }
  .mobile-bottom-nav .mbn-item.active{color:var(--accent)}
  .mobile-bottom-nav .mbn-item .mbn-icon{font-size:20px}

  /* Ajuste para bottom nav */
  .main-content{padding-bottom:70px}

  /* Cards más compactas */
  .card-body{padding:14px}
  .card-header{padding:14px 16px}

  /* Search input full width */
  .search-input{width:100%!important}
  .table-toolbar{flex-direction:column;gap:8px}

  /* Attendance list */
  #attendanceList .flex-gap{flex-wrap:wrap}

  /* Login card mobile */
  .login-card{padding:36px 24px;border-radius:16px}
  .login-logo{font-size:40px}

  /* Notif panel full */
  .notif-panel{width:100%;right:-100%}
  .notif-panel.open{right:0}

  /* Top bar ajuste */
  .top-bar{top:0;height:52px;background:var(--surface);
    border-bottom:1px solid var(--border);padding:0 14px 0 58px;
    pointer-events:all;display:flex;align-items:center}
  .top-bar-actions{margin-top:0}

  /* Welcome banner */
  .welcome-banner{padding:14px;gap:10px;flex-wrap:wrap;max-width:100%;overflow:hidden}
  .welcome-av{width:44px;height:44px;font-size:18px;flex-shrink:0}
  .welcome-banner > div{min-width:0;flex:1}
}

@media(max-width:480px){
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .ex-grid{grid-template-columns:1fr}
  .achievement-popup{padding:30px 24px;width:calc(100vw - 32px)}
}

/* ── Fixes globales mobile para badges y overflow ── */
@media(max-width:900px){
  /* Prevenir overflow horizontal en toda la app */
  .page, .card, .modal, .table-wrap, .two-col, .three-col{
    max-width:100%;overflow-x:hidden
  }
  /* Badges no se cortan */
  .badge{white-space:nowrap;display:inline-flex;align-items:center}

  /* Stat cards no se cortan */
  .stat-card{overflow:hidden;min-width:0}
  .stat-num{font-size:clamp(22px,6vw,40px);line-height:1;word-break:break-all}
  .stat-label{font-size:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .stats-grid{grid-template-columns:repeat(2,1fr)!important}

  /* Page header en mobile */
  .page-header{flex-direction:column;align-items:flex-start;gap:10px}
  .ph-right{display:flex;flex-wrap:wrap;gap:8px;width:100%}
  .ph-right .btn,.ph-right .search-input{flex:1;min-width:120px}

  /* Pagos: stat cards en columna */
  #pagoStats{display:grid;grid-template-columns:repeat(2,1fr)!important;gap:8px;width:100%}
  #pagoStats .stat-card:last-child{grid-column:span 2}

  /* Asistencia: botones no se cortan */
  #attListInner .btn{white-space:nowrap;font-size:11px;padding:5px 8px}
  #attListInner > div{flex-wrap:wrap;gap:6px}
  #attListInner > div > div:first-child{flex:1;min-width:0}

  /* Nutricion: grid de comidas en 1 col */
  #nutComidas{grid-template-columns:1fr!important;width:100%}
  #nutricionContainer > div{max-width:100%;overflow-x:hidden}

  /* Nutricion: objetivos en 2 col */
  #nutKcal,#nutProt,#nutCarb,#nutGras{font-size:14px}

  /* Modal tabs */
  .modal-tabs{overflow-x:auto;white-space:nowrap;-webkit-overflow-scrolling:touch}
  .modal-tab{padding:8px 12px;font-size:12px}

  /* Toolbar flex wrap */
  .table-toolbar{flex-wrap:wrap}
  .table-toolbar select,.table-toolbar .search-input{min-width:0;flex:1}
}

.mobile-toggle{
  display:none;position:fixed;top:8px;left:8px;z-index:250;
  width:38px;height:38px;background:var(--surface);border:1px solid var(--border);
  border-radius:8px;align-items:center;justify-content:center;cursor:pointer;font-size:18px
}
@media(max-width:900px){.mobile-toggle{display:flex}}
.mobile-bottom-nav{display:none}