/* ===========================================================================
   Portal de academias — tema claro.
   Hoja de estilos propia (no comparte nada con el panel admin oscuro).
   El color de acento (--acc) puede sobrescribirse por academia en <body>.
   =========================================================================== */

:root{
  --bg:#f6f8fb;
  --surface:#ffffff;
  --surface-soft:#fbfcfe;
  --border:#e6eaf1;
  --border-strong:#d7dce5;
  --text:#0f172a;
  --muted:#64748b;
  --faint:#94a3b8;

  --acc:#2962ff;
  --acc-soft:#eaf1ff;
  --acc-ink:#1e51d6;

  --ok:#157347;   --ok-soft:#e7f6ee;
  --warn:#b45309; --warn-soft:#fdf2e3;
  --danger:#dc2626; --danger-soft:#fdecec;

  --radius:14px;
  --radius-sm:9px;
  --shadow:0 1px 2px rgba(15,23,42,.05);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:14px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}

/* ---- Acceso (login / cambio de contraseña) ------------------------------- */
.ac-auth{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.ac-auth__card{
  width:100%;max-width:380px;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:30px 28px;
}
.ac-auth__brand{display:flex;align-items:center;gap:11px;margin-bottom:22px}
.ac-auth__logo{
  width:40px;height:40px;border-radius:11px;background:var(--acc);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;
}
.ac-auth__brand b{font-size:15px;font-weight:700}
.ac-auth__brand span{display:block;font-size:12px;color:var(--muted)}
.ac-auth h1{font-size:18px;font-weight:700;margin:0 0 4px}
.ac-auth__sub{font-size:13px;color:var(--muted);margin:0 0 20px}

/* ---- Formularios --------------------------------------------------------- */
.ac-field{margin-bottom:14px}
.ac-field label{display:block;font-size:12.5px;font-weight:600;color:#334155;margin-bottom:6px}
.ac-input{
  width:100%;height:40px;padding:0 12px;font-size:14px;color:var(--text);
  background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--radius-sm);
  outline:none;transition:border-color .12s,box-shadow .12s;
}
.ac-input:focus{border-color:var(--acc);box-shadow:0 0 0 3px var(--acc-soft)}
textarea.ac-input{height:auto;padding:10px 12px;resize:vertical;min-height:84px}

/* ---- Botones ------------------------------------------------------------- */
.ac-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  height:40px;padding:0 16px;font-size:13.5px;font-weight:600;cursor:pointer;
  border:1px solid var(--border-strong);border-radius:var(--radius-sm);
  background:var(--surface);color:#334155;transition:background .12s,border-color .12s,transform .05s;
}
.ac-btn:hover{background:#f3f5f9}
.ac-btn:active{transform:scale(.99)}
.ac-btn:disabled{opacity:.55;cursor:not-allowed}
.ac-btn--primary{background:var(--acc);border-color:var(--acc);color:#fff}
.ac-btn--primary:hover{background:var(--acc-ink);border-color:var(--acc-ink)}
.ac-btn--danger{background:var(--surface);border-color:#f0c9c9;color:var(--danger)}
.ac-btn--danger:hover{background:var(--danger-soft)}
.ac-btn--block{width:100%}
.ac-btn--sm{height:32px;padding:0 12px;font-size:12.5px}

.ac-formmsg{font-size:13px;border-radius:var(--radius-sm);padding:9px 12px;margin-bottom:14px}
.ac-formmsg--err{background:var(--danger-soft);color:var(--danger)}
.ac-formmsg[hidden]{display:none}

/* ---- Toolbar / filtros --------------------------------------------------- */
.ac-toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:14px}
select.ac-input{cursor:pointer;background:var(--surface)}
.ac-input--auto{width:auto;min-width:140px}
.ac-input--grow{flex:1;min-width:180px}

/* ---- Shell --------------------------------------------------------------- */
.ac-shell{display:flex;min-height:100vh}
.ac-side{
  width:230px;flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);
  display:flex;flex-direction:column;padding:16px 12px;
}
.ac-brand{display:flex;align-items:center;gap:10px;padding:6px 8px 16px;border-bottom:1px solid var(--border);margin-bottom:12px}
.ac-brand__logo{
  width:36px;height:36px;border-radius:10px;background:var(--acc);color:#fff;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;
}
.ac-brand__name{font-size:13.5px;font-weight:700;line-height:1.15}
.ac-brand__tag{font-size:11.5px;color:var(--muted)}
.ac-brand__logo--img{background:#fff;padding:0;overflow:hidden}
.ac-brand__logo img{width:100%;height:100%;object-fit:cover;border-radius:10px;display:block}

/* Logo en Mi cuenta */
.ac-logobox{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.ac-logo-preview{width:64px;height:64px;border-radius:12px;border:1px solid var(--border);background:#f1f4f9;flex-shrink:0;display:flex;align-items:center;justify-content:center;color:var(--faint);font-weight:700;font-size:18px;overflow:hidden}
.ac-logo-preview img{width:100%;height:100%;object-fit:cover;display:block}

.ac-nav{display:flex;flex-direction:column;gap:2px;flex:1}
.ac-nav__item{
  display:flex;align-items:center;gap:11px;padding:9px 11px;border-radius:10px;
  font-size:13.5px;color:#475569;font-weight:500;
}
.ac-nav__item:hover{background:#f3f5f9}
.ac-nav__item.is-active{background:var(--acc-soft);color:var(--acc-ink);font-weight:600}
.ac-nav__item svg{width:18px;height:18px;flex-shrink:0}

.ac-side__foot{border-top:1px solid var(--border);padding-top:10px;margin-top:8px}
.ac-logout{
  display:flex;align-items:center;gap:11px;padding:9px 11px;border-radius:10px;
  font-size:13.5px;color:var(--muted);font-weight:500;
}
.ac-logout:hover{background:var(--danger-soft);color:var(--danger)}
.ac-logout svg{width:18px;height:18px}

/* ---- Main / topbar ------------------------------------------------------- */
.ac-main{flex:1;min-width:0;display:flex;flex-direction:column}
.ac-top{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 24px;background:var(--surface);border-bottom:1px solid var(--border);
}
.ac-top__title{font-size:17px;font-weight:700}
.ac-top__user{display:flex;align-items:center;gap:9px;font-size:13px;color:#475569}
.ac-avatar{
  width:28px;height:28px;border-radius:50%;background:#e2e8f0;color:#475569;
  display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;
}
.ac-burger{display:none;background:none;border:none;cursor:pointer;color:#475569;padding:4px}
.ac-burger svg{width:24px;height:24px}

.ac-content{padding:22px 24px;max-width:1100px}

/* ---- Tarjetas y KPIs ----------------------------------------------------- */
.ac-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;margin-bottom:16px}
.ac-card__title{font-size:14px;font-weight:700;margin:0 0 12px}

.ac-kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:16px}
.ac-kpi{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px}
.ac-kpi__l{font-size:12px;color:var(--muted);margin:0 0 6px}
.ac-kpi__n{font-size:24px;font-weight:700;line-height:1}
.ac-kpi__n--acc{color:var(--acc)}

/* ---- Pills --------------------------------------------------------------- */
.ac-pill{display:inline-block;font-size:11.5px;font-weight:600;padding:3px 10px;border-radius:999px}
.ac-pill--ok{background:var(--ok-soft);color:var(--ok)}
.ac-pill--info{background:var(--acc-soft);color:var(--acc-ink)}
.ac-pill--warn{background:var(--warn-soft);color:var(--warn)}
.ac-pill--off{background:#eef1f6;color:var(--faint)}

/* ---- Tablas -------------------------------------------------------------- */
.ac-table{width:100%;border-collapse:collapse}
.ac-table th{font-size:11.5px;color:var(--faint);font-weight:600;text-align:left;padding:0 10px 10px}
.ac-table td{font-size:13px;padding:11px 10px;border-top:1px solid #eef1f6;vertical-align:middle}
.ac-table tr:first-child td{border-top:none}
@media (max-width:620px){
  .ac-table--stack thead{display:none}
  .ac-table--stack tr{display:block;border:1px solid var(--border);border-radius:10px;margin-bottom:10px;padding:4px 12px}
  .ac-table--stack td{display:flex;justify-content:space-between;gap:14px;border-top:none;padding:8px 0;text-align:right}
  .ac-table--stack td+td{border-top:1px solid #f1f4f8}
  .ac-table--stack td::before{content:attr(data-label);color:var(--faint);font-weight:600;font-size:11.5px;text-align:left}
  .ac-table--stack td[data-label=""]::before{content:""}
}

/* ---- Acuerdo (solo lectura) --------------------------------------------- */
.ac-deal{display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--surface-soft)}
.ac-deal__t{font-size:13px;font-weight:700;margin-bottom:3px}
.ac-deal__d{font-size:12px;color:var(--muted)}

/* ---- Formularios de configuración ---------------------------------------- */
.ac-titlerow{display:flex;align-items:center;gap:7px;margin-bottom:14px}
.ac-titlerow .ac-card__title{margin:0}
.ac-info{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border:none;background:none;color:var(--faint);cursor:pointer;padding:0}
.ac-info:hover{color:var(--acc)}
.ac-info svg{width:17px;height:17px}
.ac-grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:640px){.ac-grid2{grid-template-columns:1fr}}
.ac-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:4px}
.ac-color{display:flex;align-items:center;gap:10px}
.ac-color input[type=color]{width:46px;height:40px;padding:2px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);cursor:pointer}
.ac-kv{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-top:1px solid #eef1f6;font-size:13.5px}
.ac-kv:first-child{border-top:none}
.ac-kv__k{color:var(--muted)}
.ac-kv__v{font-weight:600;text-align:right}

/* Lista de selección (checkboxes) */
.ac-check{display:flex;align-items:center;gap:10px;padding:9px 2px;border-top:1px solid #eef1f6;font-size:13.5px;cursor:pointer}
.ac-check:first-child{border-top:none}
.ac-check input{width:17px;height:17px;cursor:pointer;flex-shrink:0}

/* ---- Maestro / detalle de alumnos --------------------------------------- */
.ac-back{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);cursor:pointer;margin-bottom:12px}
.ac-back:hover{color:var(--acc)}
.ac-detail-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.ac-detail-head__name{font-size:18px;font-weight:700}

/* Pestañas del detalle */
.ac-tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:16px;flex-wrap:wrap}
.ac-tab{padding:9px 14px;font-size:13.5px;font-weight:600;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}
.ac-tab:hover{color:var(--text)}
.ac-tab.is-active{color:var(--acc-ink);border-bottom-color:var(--acc)}

/* Selector de rango temporal de los gráficos */
.ac-rangos{display:inline-flex;gap:4px;background:#eef1f6;border-radius:9px;padding:3px;flex-wrap:wrap}
.ac-rango{border:none;background:none;padding:6px 12px;font-size:12.5px;font-weight:600;color:var(--muted);cursor:pointer;border-radius:7px}
.ac-rango:hover{color:var(--text)}
.ac-rango.is-active{background:var(--surface);color:var(--acc-ink);box-shadow:0 1px 2px rgba(15,23,42,.08)}

/* Notificaciones: barra de lectura, selector de icono, chips de selección */
.ac-progress{height:7px;background:#eef1f6;border-radius:999px;overflow:hidden}
.ac-progress__bar{height:100%;background:var(--ok);border-radius:999px;transition:width .3s}
.ac-iconos{display:flex;gap:6px;flex-wrap:wrap}
.ac-icono{width:38px;height:38px;border:1px solid var(--border-strong);border-radius:9px;background:var(--surface);font-size:18px;line-height:1;cursor:pointer}
.ac-icono.is-active{border-color:var(--acc);background:var(--acc-soft)}
.ac-chip{display:inline-flex;align-items:center;gap:4px;background:var(--acc-soft);color:var(--acc-ink);border-radius:999px;padding:4px 6px 4px 11px;font-size:12.5px;margin:0 6px 6px 0}
.ac-chip button{border:none;background:none;color:inherit;cursor:pointer;font-size:16px;line-height:1;padding:0 4px}

/* Caja de código */
.ac-codebox{display:flex;align-items:center;gap:12px;flex-wrap:wrap;background:var(--surface-soft);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 14px}
.ac-code{font-size:22px;font-weight:800;letter-spacing:3px;color:var(--text)}
.ac-codebox__actions{display:flex;gap:8px;flex-wrap:wrap;margin-left:auto}

/* ---- Estados ------------------------------------------------------------- */
.ac-empty{padding:26px;text-align:center;color:var(--muted);font-size:13px}
.ac-muted{color:var(--muted)}
.ac-skeleton{color:var(--faint);font-size:13px;padding:6px 0}

/* ---- Toast --------------------------------------------------------------- */
.ac-toasts{position:fixed;right:18px;bottom:18px;display:flex;flex-direction:column;gap:8px;z-index:60}
.ac-toast{
  min-width:220px;max-width:360px;background:var(--surface);border:1px solid var(--border);
  border-left:3px solid var(--acc);border-radius:10px;box-shadow:0 6px 22px rgba(15,23,42,.12);
  padding:11px 14px;font-size:13px;
}
.ac-toast--ok{border-left-color:var(--ok)}
.ac-toast--err{border-left-color:var(--danger)}

/* ---- Modal de confirmación ---------------------------------------------- */
.ac-modal-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.42);display:flex;align-items:center;justify-content:center;z-index:70;padding:20px}
.ac-modal{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 14px 44px rgba(15,23,42,.22);width:100%;max-width:410px;padding:20px 22px}
.ac-modal__title{font-size:15px;font-weight:700;margin-bottom:8px}
.ac-modal__body{font-size:13.5px;color:#334155;line-height:1.55;margin-bottom:18px}
.ac-modal__foot{display:flex;justify-content:flex-end;gap:8px}

/* Picker con búsqueda */
.ac-modal--picker{max-width:460px}
.ac-picker-list{max-height:340px;overflow-y:auto;display:flex;flex-direction:column;gap:5px;margin:10px 0 6px}
.ac-picker-item{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;text-align:left;padding:10px 12px;border:1px solid var(--border);border-radius:9px;background:var(--surface);cursor:pointer;font-size:13.5px;color:var(--text)}
.ac-picker-item:hover{background:var(--acc-soft);border-color:var(--acc)}
.ac-picker-item__sub{color:var(--muted);font-size:12px;white-space:nowrap}

/* ---- Responsive ---------------------------------------------------------- */
.ac-backdrop{display:none;position:fixed;inset:0;background:rgba(15,23,42,.4);z-index:40}
@media (max-width:860px){
  .ac-side{position:fixed;inset:0 auto 0 0;z-index:50;transform:translateX(-100%);transition:transform .2s;box-shadow:0 0 30px rgba(15,23,42,.18)}
  .ac-side.is-open{transform:none}
  .ac-backdrop.is-open{display:block}
  .ac-burger{display:inline-flex}
  .ac-kpis{grid-template-columns:repeat(2,1fr)}
  .ac-content{padding:18px 16px}
  .ac-top{padding:12px 16px}
}
@media (max-width:460px){
  .ac-kpis{grid-template-columns:1fr}
}