/* ==========================================================================
   Capa de sesión del laboratorio · acceso, presencia y entregas
   Se apoya en las variables de app.css. No redefine ningún estilo del portal.
   ========================================================================== */

/* Oculta el portal hasta saber si hay sesión. El script de arranque quita
   esta clase pase lo que pase, así que nunca deja la página en blanco. */
html.nsca-boot body > .topbar,
html.nsca-boot body > .sidebar,
html.nsca-boot body > main,
html.nsca-boot body > .totop { visibility: hidden; }

/* ----------------------------------------------------------------- acceso */
.nsca-gate{
  position: fixed; inset: 0; z-index: 200;
  display: grid; place-items: center; padding: 20px;
  background: var(--bg-sunk);
  overflow: auto;
}
.nsca-gate[hidden]{ display: none; }

.nsca-card{
  width: 100%; max-width: 420px;
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 30px 26px;
  box-shadow: 0 18px 50px rgba(20,22,43,.14);
}
.nsca-card img{ height: 28px; width: auto; margin-bottom: 22px; }
.nsca-card .lightonly{ display: block; }
.nsca-card .darkonly{ display: none; }
@media (prefers-color-scheme: dark){
  .nsca-card .lightonly{ display: none; }
  /* !important porque el atributo style en línea del marcado la oculta */
  .nsca-card .darkonly{ display: block !important; }
}
.nsca-card .kick{
  margin: 0 0 4px; font-size: 12px; letter-spacing: .08em; text-transform: uppercase;
  color: var(--tx-3);
}
.nsca-card h1{ margin: 0 0 8px; font-size: 21px; line-height: 1.3; color: var(--tx); }
.nsca-card .sub{ margin: 0 0 22px; font-size: 14px; line-height: 1.55; color: var(--tx-2); }

.nsca-field{ margin-bottom: 14px; }
.nsca-field label{
  display: block; font-size: 13px; font-weight: 600; margin-bottom: 5px; color: var(--tx);
}
.nsca-field input{
  width: 100%; min-height: 44px; padding: 10px 12px;
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  background: var(--bg); color: var(--tx); font: inherit;
}
.nsca-field input:focus-visible{ outline: 2px solid var(--accent); outline-offset: 1px; }
.nsca-code input{
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 24px; letter-spacing: .32em; text-align: center; min-height: 56px;
}

.nsca-primary{
  width: 100%; min-height: 46px; margin-top: 8px;
  border: 1px solid var(--brand); border-radius: var(--radius);
  background: var(--brand); color: #fff; font: inherit; font-weight: 600;
  cursor: pointer;
}
.nsca-primary:hover{ filter: brightness(1.12); }
.nsca-primary[disabled]{ opacity: .55; cursor: progress; }
.nsca-link{
  background: none; border: none; padding: 8px 0; margin-top: 10px;
  color: var(--accent); font: inherit; font-size: 13px; cursor: pointer; text-decoration: underline;
}
.nsca-msg{ margin: 12px 0 0; font-size: 13px; line-height: 1.5; min-height: 1em; }
.nsca-msg.err{ color: var(--dang); }
.nsca-msg.ok{ color: var(--accent); }
.nsca-fine{ margin: 20px 0 0; font-size: 12px; line-height: 1.55; color: var(--tx-3); }

/* -------------------------------------------------------------- identidad */
.nsca-who{
  border-top: 1px solid var(--line); margin-top: 14px; padding-top: 14px;
  font-size: 13px; color: var(--tx-2);
}
.nsca-who b{ display: block; color: var(--tx); font-size: 14px; }
.nsca-who span{ word-break: break-all; }
.nsca-who .row{ display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.nsca-who .row .btn{ flex: 1; justify-content: center; font-size: 13px; }

/* --------------------------------------------------------------- presencia */
.nsca-live{
  border-top: 1px solid var(--line); margin-top: 14px; padding-top: 14px;
}
.nsca-live > .hd{
  display: flex; align-items: center; gap: 8px; margin: 0 0 10px;
  font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--tx-3);
}
.nsca-live > .hd .n{ margin-left: auto; font-variant-numeric: tabular-nums; }
.nsca-people{ list-style: none; margin: 0; padding: 0; max-height: 240px; overflow: auto; }
.nsca-people li{
  display: flex; align-items: center; gap: 8px; padding: 5px 0; font-size: 13px;
}
.nsca-people .dot{
  flex: none; width: 8px; height: 8px; border-radius: 50%; background: var(--line-strong);
}
.nsca-people .dot.on{ background: var(--nx-green); box-shadow: 0 0 0 3px rgba(6,218,97,.2); }
.nsca-people .nm{
  flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  color: var(--tx-2);
}
.nsca-people li.me .nm{ color: var(--tx); font-weight: 600; }
.nsca-people .pc{ flex: none; font-variant-numeric: tabular-nums; color: var(--tx-3); font-size: 12px; }
.nsca-live .empty{ margin: 0; font-size: 13px; color: var(--tx-3); }

/* --------------------------------------------------------------- entregas */
.nsca-drop{
  border: 1px solid var(--line); border-radius: 12px; background: var(--bg-sunk);
  padding: 18px 20px; margin: 8px 0 28px;
}
.nsca-drop > h3{ margin: 0 0 4px !important; font-size: 17px; }
.nsca-drop > .lead{ margin: 0 0 4px; font-size: 14px; color: var(--tx-2); line-height: 1.6; }
.nsca-drop > .tally{
  margin: 12px 0 0; font-size: 13px; color: var(--tx-2);
  border-top: 1px solid var(--line); padding-top: 12px;
}
.nsca-drop > .tally b{ color: var(--tx); }

.nsca-slot{
  background: var(--bg-raise); border: 1px solid var(--line);
  border-radius: var(--radius); margin-top: 12px; overflow: hidden;
}
.nsca-slot > summary{
  cursor: pointer; padding: 12px 14px; min-height: 44px;
  display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 15px;
  list-style: none;
}
.nsca-slot > summary::-webkit-details-marker{ display: none; }
.nsca-slot > summary::before{ content: "▸"; color: var(--tx-3); font-size: 12px; }
.nsca-slot[open] > summary::before{ content: "▾"; }
.nsca-slot > summary .cnt{
  margin-left: auto; font-weight: 500; font-size: 12px; color: var(--tx-3);
  font-variant-numeric: tabular-nums; white-space: nowrap;
}
.nsca-slot > summary .cnt.has{ color: var(--accent); }
.nsca-slot .body{ padding: 0 14px 14px; }
.nsca-slot .hint{ margin: 0 0 10px; font-size: 13px; color: var(--tx-3); line-height: 1.55; }
.nsca-slot textarea{
  width: 100%; min-height: 84px; resize: vertical; padding: 10px 12px;
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  background: var(--bg); color: var(--tx); font: inherit; font-size: 14px; line-height: 1.55;
}
.nsca-slot textarea:focus-visible{ outline: 2px solid var(--accent); outline-offset: 1px; }
.nsca-slot .tools{ display: flex; align-items: center; gap: 10px; margin-top: 10px; flex-wrap: wrap; }
.nsca-slot .state{ font-size: 12px; color: var(--tx-3); }
.nsca-slot input[type=file]{ display: none; }

.nsca-files{ list-style: none; margin: 12px 0 0; padding: 0; }
.nsca-files li{
  display: flex; align-items: center; gap: 10px;
  padding: 8px 0; border-top: 1px solid var(--line); font-size: 14px;
}
.nsca-files a{ color: var(--accent); font-weight: 600; word-break: break-all; }
.nsca-files .sz{ margin-left: auto; font-size: 12px; color: var(--tx-3); white-space: nowrap; }
.nsca-files .del{
  flex: none; border: 1px solid var(--line); border-radius: 6px; background: var(--bg);
  color: var(--tx-2); cursor: pointer; font: inherit; font-size: 12px;
  min-width: 44px; min-height: 32px;
}
.nsca-files .del:hover{ border-color: var(--dang); color: var(--dang); }

@media print{ .nsca-gate, .nsca-live, .nsca-who, .nsca-drop{ display: none !important; } }