:root{--azul:#213E8F;--profundo:#14275F;--vivo:#2563EB;--papel:#F5F7FC;--tinta:#1B2447;--rojo:#C0392B}
*{box-sizing:border-box;margin:0}
body{font-family:'Plus Jakarta Sans',system-ui,sans-serif;color:#fff;line-height:1.5;min-height:100vh;position:relative;
  background:linear-gradient(180deg,var(--profundo) 0,var(--azul) 60%,#2D5FC9 100%)}
a,button,input{font:inherit}
:focus-visible{outline:3px solid #fff;outline-offset:3px}

/* Foto superior que se funde en el degradado */
.fondo{position:absolute;inset:0 0 auto 0;height:460px;background:center/cover no-repeat;
  -webkit-mask-image:linear-gradient(#000 35%,transparent);mask-image:linear-gradient(#000 35%,transparent)}
.fondo::after{content:'';position:absolute;inset:0;background:rgba(20,39,95,.55)}

.acceso{position:relative;min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:clamp(1.5rem,5vw,3rem) 1.25rem 2rem}
.identidad{display:flex;flex-direction:column;align-items:center;gap:.35rem;text-align:center}
.logo{width:96px;height:96px;border-radius:50%;background:#fff;padding:4px;object-fit:cover;box-shadow:0 10px 30px rgba(0,0,0,.28)}
.identidad strong{font-size:1.15rem;font-weight:800;letter-spacing:-.01em;margin-top:.4rem}
.identidad span{font-size:.75rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#9DB8FF}

.contenedor{width:100%;max-width:46rem;margin-top:clamp(2rem,6vw,3.5rem);text-align:center}
.atras{display:inline-flex;align-items:center;gap:.3rem;color:#fff;text-decoration:none;font-weight:600}
.atras svg{width:20px;height:20px}
.atras:hover{text-decoration:underline}
h1{font-size:clamp(1.9rem,4.5vw,2.8rem);font-weight:800;letter-spacing:-.03em;line-height:1.1;margin:.7rem 0 2rem}

/* Dos opciones separadas por una línea */
.opciones{display:grid;grid-template-columns:1fr 1fr}
.opcion{display:flex;flex-direction:column;align-items:center;text-align:center;gap:.6rem;padding:0 2rem;color:#fff;text-decoration:none}
.opcion+.opcion{border-left:1px solid rgba(255,255,255,.35)}
.opcion svg{width:44px;height:44px}
.opcion h2{font-size:1.7rem;font-weight:800;letter-spacing:-.02em;line-height:1.1}
.opcion p{color:#DCE6FF;max-width:30ch}
.ir{align-self:center;margin-top:.7rem;background:var(--vivo);color:#fff;font-weight:700;padding:.75rem 1.25rem;border-radius:14px;transition:background .15s}
.opcion:hover .ir{background:#1D4ED8}

/* Formulario administrativo */
.tarjeta{margin:0 auto;max-width:26rem;padding:clamp(1.25rem,4vw,2rem);border:1px solid rgba(255,255,255,.28);border-radius:20px;background:rgba(255,255,255,.08);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.nota{color:#DCE6FF;margin-bottom:1rem}
form{display:flex;flex-direction:column;gap:.5rem}
label{font-weight:700;margin-top:.4rem;text-align:left}
input[type=text],input[type=password]{width:100%;padding:.8rem 1rem;border-radius:12px;border:2px solid transparent;background:#fff;color:var(--tinta)}
input:focus{border-color:#9DB8FF}
.error{background:#fff;color:#7A1B12;border-left:4px solid var(--rojo);border-radius:6px;padding:.65rem .8rem;font-weight:600}
.btn{margin-top:.9rem;border:0;border-radius:14px;padding:.85rem 1.4rem;background:var(--vivo);color:#fff;font-weight:700;cursor:pointer;transition:background .15s}
.btn:hover{background:#1D4ED8}
footer{margin-top:auto;padding-top:3rem;color:#C9D6FF;font-size:.9rem}

/* Panel */
body.panel{background:var(--papel);color:var(--tinta)}
.barra{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin:1rem auto 0;width:min(70rem,calc(100% - 2rem));padding:.9rem 1.4rem;background:#35428A;color:#fff;border-radius:20px}
.marca{font-weight:800;font-size:1.1rem;letter-spacing:-.01em}
.barra form{flex-direction:row;align-items:center;gap:1rem}
.btn-texto{background:none;border:1.5px solid rgba(255,255,255,.55);color:#fff;padding:.45rem 1rem;border-radius:12px;font-weight:600;cursor:pointer}
.btn-texto:hover{background:rgba(255,255,255,.12)}
.contenido{padding:clamp(2rem,6vw,4rem) 1.25rem;max-width:60rem;margin:0 auto}
.contenido h1{color:var(--azul);margin:0 0 2rem}
.sistemas{display:grid;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));gap:1.25rem}
.sistema{width:100%;height:100%;text-align:left;display:flex;flex-direction:column;gap:.4rem;padding:1.6rem;background:#fff;border:2px solid #D5DDF2;border-radius:18px;color:var(--tinta);cursor:pointer;transition:border-color .15s,box-shadow .15s}
.sistema strong{font-size:1.5rem;font-weight:800;letter-spacing:-.02em;color:var(--azul)}
.sistema:hover{border-color:var(--vivo);box-shadow:0 10px 28px rgba(33,62,143,.15)}

@media(max-width:700px){
  .opciones{grid-template-columns:1fr;gap:2rem}
  .opcion{padding:0}
  .opcion+.opcion{border-left:0;border-top:1px solid rgba(255,255,255,.35);padding-top:2rem}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}