:root{
  /*
    Paleta por defecto (oscura). En producción se sobreescribe en:
    assets/css/theme-igmacademy.css
  */
  --bg:#0b1220;
  --bg-grad-start:#071022;
  --bg-grad-end:#050a14;

  --card:#0f1a30;
  --card-rgb:15,26,48;
  --card-bg: rgba(15,26,48,0.90);
  --topbar-bg: rgba(15,26,48,0.85);

  --text:#e7eefc;
  --text-rgb:231,238,252;
  --muted:#aab6d3;

  --accent:#27c1b6;
  --accent-rgb:39,193,182;

  --danger:#ff5b6a;
  --danger-rgb:255,91,106;

  --border:#223257;
  --input-bg:#0b1429;

  --shadow: 0 20px 50px rgba(0,0,0,0.25);
}

*{box-sizing:border-box}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  background: linear-gradient(180deg, var(--bg-grad-start), var(--bg-grad-end));
  color:var(--text);
}
a{color:var(--accent); text-decoration:none}
a:hover{text-decoration:underline}

.container{max-width:1100px; margin:0 auto; padding:16px}
.topbar{
  background: var(--topbar-bg);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--border);
  position: sticky;
  top:0;
}
.brand{font-weight:800; letter-spacing:0.3px}
.nav{display:flex; gap:14px; align-items:center}
.nav a{color:var(--text)}
.nav a.danger{color:var(--danger)}

/* ------------------------------------------------------------
   Navegación agrupada (Propuesta A)
   - Details dropdown en escritorio
   - Acordeón en móvil
   ------------------------------------------------------------ */

.nav-dd{position:relative}
.nav-dd summary{list-style:none;cursor:pointer;color:var(--text);display:inline-flex;align-items:center;gap:6px;padding:6px 8px;border-radius:10px}
.nav-dd summary::-webkit-details-marker{display:none}
.nav-dd summary:hover{text-decoration:none;background:rgba(var(--text-rgb),.06)}
.nav-dd[open] summary{background:rgba(var(--text-rgb),.08)}
.nav-dd-caret{opacity:.8}

.nav-dd-menu{position:absolute;top:calc(100% + 8px);left:0;min-width:220px;z-index:50;
  background:var(--card-bg);border:1px solid var(--border);border-radius:14px;padding:8px;box-shadow:var(--shadow);
  display:flex;flex-direction:column;gap:6px}
.nav-dd-menu a{display:block;padding:10px 12px;border-radius:12px;color:var(--text);border:1px solid transparent}
.nav-dd-menu a:hover{background:rgba(var(--text-rgb),.06);border-color:rgba(var(--text-rgb),.12);text-decoration:none}

/* Helpers para renderizar tablas en escritorio y tarjetas en móvil */
.igm-mobile-only{display:none !important}
.igm-desktop-only{display:block !important}
@media (max-width:900px){
  .igm-mobile-only{display:block !important}
  .igm-desktop-only{display:none !important}

  .nav-dd{width:100%}
  .nav-dd-menu{position:static;min-width:0;background:transparent;border:none;box-shadow:none;padding:6px 0 0 10px}
  .nav-dd summary{
    display:flex;width:100%;justify-content:space-between;
    padding:10px 12px;border-radius:12px;
    background:rgba(var(--text-rgb),.04);border:1px solid var(--border)
  }
  .nav-dd-menu a{
    background:rgba(var(--text-rgb),.04);border:1px solid var(--border);
    padding:10px 12px
  }
}

/* Tarjetas (listas) en móvil */
.list-cards{display:flex;flex-direction:column;gap:12px;margin-top:14px}
.list-card{background:var(--card-bg);border:1px solid var(--border);border-radius:14px;padding:14px}
.list-card__top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.list-card__title{font-weight:800;line-height:1.15}
.list-card__meta{color:var(--muted);font-size:.92rem;margin-top:4px}
.list-card__grid{display:grid;grid-template-columns:1fr 1fr;gap:10px 12px;margin-top:12px}
.list-card__field{min-width:0}
.list-card__label{display:block;color:var(--muted);font-size:.78rem;margin-bottom:2px}
.list-card__value{font-weight:650;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.list-card__actions{margin-top:12px;display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}

/* Quita el margen superior de botones cuando están en barras de acciones */
.action-buttons .btn, .list-card__actions .btn{margin-top:0}


/* Topbar responsive (móvil): menú en hamburguesa */
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;padding:10px;
  border-radius:12px;border:1px solid var(--border);
  background:rgba(var(--text-rgb),.06);color:var(--text);
  cursor:pointer
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;margin:3px 0;opacity:.9}
.nav-toggle:focus{outline:2px solid rgba(var(--accent-rgb),.45);outline-offset:2px}

@media (max-width: 900px){
  .nav-toggle{display:inline-flex}
  .nav.nav-links{display:none;width:100%;flex-direction:column;align-items:stretch;gap:6px;padding-top:8px}
  .nav.nav-links.open{display:flex}
  .nav.nav-links a{
    display:block;padding:10px 12px;border-radius:12px;
    background:rgba(var(--text-rgb),.04);border:1px solid var(--border)
  }
  .nav.nav-links a:hover{text-decoration:none;background:rgba(var(--text-rgb),.08)}
}
.row{display:flex; align-items:center}
.space{justify-content:space-between}
.gap{gap:12px}
.wrap{flex-wrap:wrap}
.mt{margin-top:14px}

.card{
  background: var(--card-bg);
  border:1px solid var(--border);
  border-radius:14px;
  padding:18px;
  box-shadow: var(--shadow);
}
.card.narrow{max-width:520px; margin:24px auto}
h1{margin:0 0 14px 0}
h2{margin:12px 0}

label{display:block; margin-top:12px; margin-bottom:6px; color:var(--muted)}
/* Labels dentro de toolbars/rows (checkboxes y filtros) */
label.row{display:flex; align-items:center; gap:8px; margin:0; color:var(--muted)}
.row > label{margin:0}
input:not([type="checkbox"]):not([type="radio"]),select,textarea{
  width:100%;
  padding:10px 12px;
  border-radius:10px;
  border:1px solid var(--border);
  background: var(--input-bg);
  color:var(--text);
}
input[type="checkbox"], input[type="radio"]{
  width:auto;
  padding:0;
  margin:0;
  accent-color: rgb(var(--accent-rgb));
}
textarea{resize:vertical}

.btn{
  margin-top:14px;
  display:inline-block;
  padding:10px 14px;
  border-radius:10px;
  border:1px solid rgba(var(--accent-rgb),0.35);
  background: rgba(var(--accent-rgb),0.18);
  color:var(--text);
  cursor:pointer;

  transition: background .15s ease, border-color .15s ease, color .15s ease, transform .05s ease;
}
/* En toolbars (display:flex) los botones no deben bajar con margin-top */
.row .btn{margin-top:0}
.row .btn.icon-only{margin-top:0}
.btn:hover{
  background: rgb(var(--cta-rgb));
  border-color: rgb(var(--cta-rgb));
  color: rgb(var(--accent-rgb));
  filter:none;
}
.btn:active{transform:translateY(1px)}
.btn.secondary{
  border:1px solid var(--border);
  background: rgba(var(--text-rgb),0.06);
}

.btn.cta{
  border:1px solid rgba(var(--cta-rgb),0.55);
  background: rgba(var(--cta-rgb),0.35);
}
.btn.cta:hover{
  background: rgb(var(--cta-rgb));
  border-color: rgb(var(--cta-rgb));
  color: rgb(var(--accent-rgb));
  filter:brightness(0.98);
}
.small{font-size:12px}
.muted{color:var(--muted)}
.hint{color:var(--muted); font-size:12px; margin-top:6px}

.grid2{display:grid; grid-template-columns: 1fr 1fr; gap:12px}
@media (max-width: 760px){.grid2{grid-template-columns:1fr}}

.alert{
  padding:10px 12px;
  border-radius:10px;
  margin:10px 0;
  border:1px solid var(--border);
}
.alert-danger{border-color: rgba(var(--danger-rgb),0.45); background: rgba(var(--danger-rgb),0.12)}
.alert-ok{border-color: rgba(var(--accent-rgb),0.45); background: rgba(var(--accent-rgb),0.12)}
.alert-warning{border-color: rgba(var(--cta-rgb),0.55); background: rgba(var(--cta-rgb),0.22)}

.table{margin-top:12px; border:1px solid var(--border); border-radius:12px; overflow:hidden}

/* Tablas HTML (usadas en Pagos, etc.) */
table.table{width:100%; border-collapse:separate; border-spacing:0}
table.table th, table.table td{padding:12px 12px; border-bottom:1px solid var(--border); vertical-align:middle}
table.table thead th{background: rgba(var(--text-rgb),0.05); font-weight:700; text-align:left}
table.table tbody tr:last-child td{border-bottom:none}
table.table .right, table.table th.right, table.table td.right{text-align:right}

@media (max-width: 760px){
  table.table th, table.table td{padding:10px 10px; font-size:13px}
  /* Pagos: acciones siempre visibles (columna sticky) */
  table.table.table-payments th:last-child,
  table.table.table-payments td:last-child{
    position: sticky;
    right: 0;
    background: var(--card-bg);
    box-shadow: -10px 0 14px rgba(0,0,0,0.08);
  }
  table.table.table-payments thead th:last-child{ z-index: 3; }
  table.table.table-payments tbody td:last-child{ z-index: 2; }

  /* Pagos: exportar (mes/anulados/excel) en móvil permite wrap */
  .payments-export-form{ flex-wrap:wrap; width:100%; }
  .payments-export-form select{ min-width:140px; flex:1; }
  .payments-export-form label.row{ margin:0; }

  /* Pagos: filtros en móvil evitan estirarse raro */
  .payments-filters-row label.row{ flex:0 0 auto; }
}
.tr{display:grid; grid-template-columns: 2fr 1fr 3fr; gap:10px; padding:10px 12px; border-bottom:1px solid var(--border)}
.tr:last-child{border-bottom:none}
.tr.head{background: rgba(var(--text-rgb),0.05); font-weight:700}
.pill{
  display:flex; align-items:center; gap:8px;
  border:1px solid var(--border);
  padding:8px 10px;
  border-radius:999px;
  background: rgba(var(--text-rgb),0.04);
}

/* Variantes de pill (estado) */
.pill.paid{
  background: rgba(31, 77, 46, .12);
  border-color: rgba(31, 77, 46, .22);
  color: #1f4d2e;
}
.pill.pending{
  background: rgba(var(--text-rgb),0.04);
  border-color: rgba(var(--text-rgb),0.10);
  color: var(--muted);
}
.pill.canceled{
  background: rgba(var(--danger-rgb),0.10);
  border-color: rgba(var(--danger-rgb),0.30);
  color: var(--danger);
}
.footer{border-top:1px solid var(--border); margin-top:24px; background: rgba(var(--card-rgb),0.55)}

/* === Tabla alumnos grupo (clases) === */
.cgs-table { width:100%; border-collapse:separate; border-spacing:0; }
.cgs-table th, .cgs-table td { vertical-align:middle; }
.cgs-table thead th { text-align:left; }
.cgs-col-student { width:auto; }
.cgs-col-range { width:220px; white-space:nowrap; }
.cgs-col-actions { width:280px; }

.cgs-actions { display:flex; gap:10px; align-items:center; justify-content:flex-end; flex-wrap:nowrap; }
.cgs-actions input[type="date"] { width:155px; }

.btn.icon {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:8px 12px;
  line-height:1;
  white-space:nowrap;
}

.btn.icon .ico { font-size:14px; line-height:1; }

/* Variante "peligro" suave para Quitar */
.btn.danger {
  border:1px solid rgba(var(--danger-rgb),.35);
  background: rgba(var(--danger-rgb),.08);
}

.btn.danger:hover { background: rgba(var(--danger-rgb),.14); }

/* === CGS: listado alumnos (grid 3 columnas) === */
.cgs-list { width:100%; border:1px solid rgba(var(--text-rgb),.08); border-radius:12px; overflow:hidden; }
.cgs-head, .cgs-row {
  display:grid;
  grid-template-columns: 1fr 220px 340px;
  gap:16px;
  align-items:center;
}
.cgs-head {
  padding:12px 14px;
  background: rgba(var(--text-rgb),.03);
  font-weight:600;
}
.cgs-row {
  padding:14px;
  border-top:1px solid rgba(var(--text-rgb),.08);
}
.cgs-student { min-width:0; }
.cgs-student .email { display:block; opacity:.85; font-size:.95em; margin-top:2px; }
.cgs-range { white-space:nowrap; opacity:.95; }
.cgs-actions { display:flex; gap:10px; align-items:center; justify-content:flex-end; flex-wrap:nowrap; }
.cgs-actions input[type="date"] { width:155px; }

/* ------------------------------------------------------------
   Icon-only buttons (acciones en listados)
   ------------------------------------------------------------ */

.action-buttons{ display:flex; gap:6px; justify-content:flex-end; align-items:center; }

.btn.icon-only{
  padding:7px 9px;
  min-width:36px;
  height:34px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:0;
}

.btn.icon-only svg{
  width:16px;
  height:16px;
  stroke-width:2;
}

/* Evita que el hover global convierta estos botones en CTA amarillo */
.btn.icon-only:hover{
  background: rgba(var(--text-rgb), .10);
  border-color: rgba(var(--text-rgb), .18);
  color: rgb(var(--text-rgb));
  box-shadow: none;
}

.btn.secondary.icon-only:hover{
  background: rgba(var(--accent-rgb), .10);
  border-color: rgba(var(--accent-rgb), .18);
  color: rgb(var(--text-rgb));
}

.btn.danger.icon-only:hover{
  background: rgba(var(--danger-rgb), .14);
  border-color: rgba(var(--danger-rgb), .35);
  color: rgb(var(--text-rgb));
}

/* Texto solo para lectores de pantalla */
.sr-only{
  position:absolute !important;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;
  border:0;
}

/* =========================
   Sesiones: color por estado
   - scheduled: normal
   - completed: un poco más oscuro
   - suspended/cancelled: tono suave diferente
   ========================= */

.sess-row.status-completed,
.sess-detail.status-completed{
  background: rgba(var(--text-rgb), .04);
}

.sess-row.status-suspended,
.sess-detail.status-suspended{
  background: rgba(var(--danger-rgb), .08);
}

/* Cuando las sesiones se muestran en tabla (por si hay otras vistas) */
.table tbody tr.status-completed > td{
  background: rgba(var(--text-rgb), .04);
}
.table tbody tr.status-suspended > td{
  background: rgba(var(--danger-rgb), .08);
}

/* Mantener legible el hover */
.sess-row.status-completed:hover{
  background: rgba(var(--text-rgb), .06);
}
.sess-row.status-suspended:hover{
  background: rgba(var(--danger-rgb), .10);
}