:root {
  --fondo: #f4f6f8; --superficie: #fff; --borde: #d9dfe5; --texto: #1c2a36; --suave: #5b6b79;
  --marca: #0f5c63; --marca-osc: #0a4349; --marca-clara: #e3f1f2; --marca-txt: #0f5c63; --sobre-marca: #fff;
  --ok: #1b7a46; --aviso: #a56300; --error: #b3261e;
  --radio: 8px; --lateral: 244px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fondo: #12181e; --superficie: #1b242c; --borde: #2e3b46; --texto: #e6ecf1; --suave: #93a3b1;
    --marca: #3fb0ba; --marca-osc: #2c8f98; --marca-clara: #16363a; --marca-txt: #3fb0ba; --sobre-marca: #111;
    --ok: #4cc27f; --aviso: #e0a23a; --error: #f2877f;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--fondo); color: var(--texto); }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 0; }
p { margin: 0 0 12px; }
.suave { color: var(--suave); }
.cargando { padding: 48px; text-align: center; color: var(--suave); }

/* Estructura */
.app { display: grid; grid-template-columns: var(--lateral) 1fr; min-height: 100vh; }
.lateral { background: var(--superficie); border-right: 1px solid var(--borde); padding: 16px 12px; display: flex; flex-direction: column; gap: 4px; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.marca { padding: 4px 8px 16px; }
.marca strong { display: block; font-size: 16px; color: var(--marca-txt); letter-spacing: .02em; }
.marca span { font-size: 12px; color: var(--suave); }
.nav a, .nav .pronto { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 8px 10px; border-radius: 6px; color: var(--texto); text-decoration: none; }
.nav a:hover { background: var(--marca-clara); }
.nav a[aria-current="page"] { background: var(--marca-clara); color: var(--marca-txt); font-weight: 600; }
.nav .pronto { color: var(--suave); cursor: default; }
.nav h3 { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--suave); margin: 16px 10px 4px; font-weight: 600; }
.etq { font-size: 11px; border: 1px solid var(--borde); border-radius: 10px; padding: 0 7px; color: var(--suave); }
.principal { min-width: 0; display: flex; flex-direction: column; }
.barra { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 24px; background: var(--superficie); border-bottom: 1px solid var(--borde); }
.barra .quien { text-align: right; font-size: 13px; line-height: 1.3; }
.barra .quien b { display: block; font-size: 14px; }
.contenido { padding: 24px; max-width: 1100px; width: 100%; }
.menu-mov { display: none; }

/* Componentes */
.tarjeta { background: var(--superficie); border: 1px solid var(--borde); border-radius: var(--radio); padding: 16px; }
.cabecera { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.rejilla { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.modulo { display: block; text-decoration: none; color: inherit; }
.modulo.activo:hover { border-color: var(--marca); }
.modulo.off { opacity: .6; }
.modulo b { display: block; margin-bottom: 4px; }
.btn { background: var(--marca); color: var(--sobre-marca); border: 1px solid var(--marca); padding: 8px 14px; border-radius: 6px; font: inherit; cursor: pointer; }
.btn:hover { background: var(--marca-osc); }
.btn:disabled { opacity: .6; cursor: default; }
.btn.sec { background: transparent; color: var(--texto); border-color: var(--borde); }
.btn.sec:hover { background: var(--marca-clara); }
.btn.peq { padding: 3px 10px; font-size: 13px; }
.icono { background: none; border: 0; font-size: 22px; line-height: 1; cursor: pointer; color: var(--suave); }
.tabla-caja { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--borde); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--suave); font-weight: 600; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
.estado { font-size: 12px; padding: 1px 8px; border-radius: 10px; border: 1px solid; white-space: nowrap; }
.estado.on { color: var(--ok); border-color: var(--ok); }
.estado.off { color: var(--suave); border-color: var(--borde); }
.vacio { padding: 32px; text-align: center; color: var(--suave); }
details pre { margin: 6px 0 0; font-size: 12px; white-space: pre-wrap; background: var(--fondo); padding: 8px; border-radius: 6px; }

/* Formularios */
label { display: block; font-size: 13px; font-weight: 600; margin: 12px 0 4px; }
input, select { width: 100%; padding: 8px 10px; border: 1px solid var(--borde); border-radius: 6px; font: inherit; background: var(--superficie); color: var(--texto); }
input:focus, select:focus, .btn:focus-visible, a:focus-visible { outline: 2px solid var(--marca); outline-offset: 1px; }
input[type=checkbox] { width: auto; margin-right: 8px; }
.check { display: flex; align-items: center; font-weight: 400; margin-top: 16px; }
.ayuda { font-size: 12px; color: var(--suave); margin-top: 4px; }
.acciones { display: flex; justify-content: flex-end; gap: 8px; margin-top: 20px; }
.fila { display: flex; gap: 8px; }
.fila > input { flex: 1; }
.error-form { color: var(--error); font-size: 13px; margin-top: 12px; min-height: 18px; }

/* Ingreso */
.centro { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.ingreso { width: 100%; max-width: 380px; }
.ingreso h1 { color: var(--marca-txt); }
.aviso { padding: 10px 12px; border-radius: 6px; background: var(--marca-clara); font-size: 14px; margin-bottom: 12px; }
.aviso.error { color: var(--error); border: 1px solid var(--error); background: transparent; }
.enlace { background: none; border: 0; color: var(--marca-txt); cursor: pointer; font: inherit; padding: 0; text-decoration: underline; }
.pasos { padding-left: 20px; } .pasos li { margin-bottom: 6px; }
code { background: var(--fondo); padding: 1px 5px; border-radius: 4px; font-size: 13px; }

/* Modal y avisos */
.modal-fondo { position: fixed; inset: 0; background: rgba(0,0,0,.45); display: grid; place-items: center; padding: 16px; z-index: 50; }
.modal { background: var(--superficie); border-radius: var(--radio); width: 100%; max-width: 460px; max-height: 92vh; overflow-y: auto; }
.modal header { display: flex; justify-content: space-between; align-items: center; padding: 14px 16px; border-bottom: 1px solid var(--borde); }
.modal-cuerpo { padding: 4px 16px 16px; }
#toasts { position: fixed; right: 16px; bottom: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 60; }
.toast { background: var(--superficie); border: 1px solid var(--borde); border-left: 4px solid var(--ok); padding: 10px 14px; border-radius: 6px; box-shadow: 0 2px 8px rgba(0,0,0,.15); max-width: 340px; }
.toast.error { border-left-color: var(--error); }

@media (max-width: 800px) {
  .app { grid-template-columns: 1fr; }
  .lateral { position: fixed; z-index: 40; width: var(--lateral); transform: translateX(-100%); transition: transform .2s; }
  .lateral.abierto { transform: none; box-shadow: 0 0 0 100vmax rgba(0,0,0,.4); }
  .menu-mov { display: inline-block; }
  .barra { padding: 10px 16px; } .contenido { padding: 16px; }
}

/* Apariencia */
.logo { display: block; max-width: 100%; max-height: 56px; object-fit: contain; margin-bottom: 8px; }
.ingreso .logo { max-height: 84px; margin: 0 auto 12px; }
.dos { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.vista-logo { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 12px 0; }
.vista-logo .fondo-claro, .vista-logo .fondo-osc { display: grid; place-items: center; min-height: 96px; padding: 12px; border-radius: 6px; border: 1px solid var(--borde); }
.vista-logo .fondo-claro { background: #fff; } .vista-logo .fondo-osc { background: #1b242c; }
.vista-logo img { max-width: 100%; max-height: 72px; object-fit: contain; }
.vista-logo .vacio { grid-column: 1 / -1; }
.muestras { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.muestra { width: 36px; height: 36px; border-radius: 50%; border: 2px solid var(--superficie); box-shadow: 0 0 0 1px var(--borde); cursor: pointer; padding: 0; }
.muestra[aria-pressed="true"] { box-shadow: 0 0 0 2px var(--texto); }
.muestra-ui { margin-top: 16px; display: flex; gap: 8px; align-items: center; }
.menu-mov[hidden], [hidden] { display: none !important; }