:root {

    --color-fondo:             #0b0b1e;
    --color-panel:             #11112a;
    --color-tarjeta:           #181838;
    --color-borde:             #21215a;

    --color-acento:            #7c3aed;
    --color-acento-secundario: #a855f7;
    --color-neon:              #00ffd5;
    --color-neon-rosa:         #ff00aa;

    --color-dorado:            #ffd700;
    --color-texto:             #e2e8f0;

    --color-texto-secundario:  #8888aa;
    --color-exito:             #22c55e;
    --color-peligro:           #ef4444;
    --fuente-pixel:'Courier New', monospace;

}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', sans-serif;
    background: var(--color-fondo);
    color: var(--color-texto);
    min-height: 100vh;
    display: flex;
}

.contenedor-autenticacion {
    display: flex;
    width: 100%;
}

.lado-izquierdo {
    width: 45%;
    background: linear-gradient(160deg, #0f0f2a 0%, #1a0e3a 60%, #0f1a2a 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 40px;
    border-right: 2px solid var(--color-borde);
    position: relative;
    overflow: hidden;
}

.lado-izquierdo::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(0, 255, 213, 0.07) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(124, 58, 237, .1) 0%, transparent 50%);
    pointer-events: none;
}

.marca {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    position: relative;
    z-index: 1;
}

.contenedor-logo {
    position: relative;
}

.anillo-animado {
    position: absolute;
    inset: -8px;
    border-radius: 12px;
    border: 2px dashed var(--color-neon);
    animation: girar 12s linear infinite;
    opacity: 0.5;
}

@keyframes girar {
    to {
        transform: rotate(360deg);
    }
}

.logo-pixel {
    width: 72px;
    height: 72px;
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(8, 1fr);
    border-radius: 8px;
    overflow: hidden;
    border: 2px solid var(--color-neon);
    box-shadow: 0 0 20px var(--color-neon);
}

.nombre-marca {
    font-size: 44px;
    font-weight: 900;
    color: var(--color-neon);
    line-height: 1;
    font-family: var(--fuente-pixel);
    letter-spacing: 4px;
    text-transform: uppercase;
    text-align: center;
}

.subtitulo-marca {
    font-size: 15px;
    color: var(--color-acento-secundario);
    letter-spacing: 6px;
}

.eslogan {
    font-size: 14px;
    color: var(--color-texto-secundario);
    text-align: center;
    max-width: 250px;
    line-height: 1.7;
    font-style: italic;
    margin-top: 4px;
}

.decoracion-pixeles {
    display: flex;
    gap: 6px;
    margin-top: 8px;
}

.decoracion-pixeles span {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    display: inline-block;
    animation: pulsar 2s ease-in-out infinite;
}

.decoracion-pixeles span:nth-child(2) {
    animation-delay: .3s;
}

.decoracion-pixeles span:nth-child(3) {
    animation-delay: .6s;
}

.decoracion-pixeles span:nth-child(4) {
    animation-delay: .9s;
}

.decoracion-pixeles span:nth-child(5) {
    animation-delay: 1.2s;
}


@keyframes pulsar {
    0%, 100% {
        transform: scale(1); opacity: 1;
    }
    50%      {
        transform: scale(1.3); opacity: .7;
    }
}

.lado-derecho {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 50px;
    background: var(--color-panel);
}

.contenedor-formulario {
    width: 100%;
    max-width: 450px;
}

.titulo-formulario {
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 6px;
}

.titulo-formulario span {
    color: var(--color-acento-secundario);
}

.subtitulo-formulario {
    color: var(--color-texto-secundario);
    font-size: 14px;
    margin-bottom: 26px;
}

.grupo-campo {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
}

.grupo-campo label {
    font-size: 11px;
    color: var(--color-texto-secundario);
    letter-spacing: 1px;
    text-transform: uppercase;
    font-weight: 600;
}

.contenedor-icono {
    position: relative;
}

.contenedor-icono i {
    position: absolute;
    left: 13px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-texto-secundario);
    font-size: 13px;
}
.contenedor-icono input {
    width: 100%;
    padding: 11px 14px 11px 38px;
    background: #0d0d24;
    border: 1.5px solid var(--color-borde);
    border-radius: 8px;
    color: var(--color-texto);
    font-size: 14px;
    outline: none;
}

.contenedor-icono input:focus {
    border-color: var(--color-acento-secundario);
    box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.15);
}

.contenedor-icono input:hover {
    border-color: var(--color-acento-secundario);
    box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.15);
}

.boton {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 22px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
    border: none;
    transition: all .2s;
    text-decoration: none;
}

.boton-primario {
    background: linear-gradient(135deg, var(--color-acento), var(--color-acento-secundario));
    color: #fff;
}

.boton-primario:hover {
    transform: translateY(-2px);
    box-shadow: 0 2px 10px rgba(124, 58, 237, .5);
}

.boton-primario:disabled {
    opacity: .55;
    cursor: not-allowed;
    transform: none;
}

.boton-secundario {
    background: transparent;
    color: var(--color-neon);
    border: 2px solid var(--color-neon);
}

.boton-secundario:hover {
    background: var(--color-neon);
    color: #000;
}

.acciones-formulario {
    display: flex;
    gap: 12px;
    margin: top;
}

.acciones-formulario .boton {
    flex: 1;
}

.separador {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 15px 0;
}

.separador span {
    font-size: 11px;
    color: var(--color-texto-secundario);
    white-space: nowrap;
}

.separador::before,
.separador::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-borde);
}

.footer-formulario{
    margin-top:18px;
    text-align:center;
    font-size:12px;
    color:var(--color-texto-secundario);
}

.footer-formulario a{
    color:var(--color-acento-secundario);
    text-decoration:none;
    font-weight:700;
}

.Alerta {
    color: red;
    font-size: medium;
    margin-bottom: 10px;
    justify-content: center;
    font-weight: bold;
    text-align: center;
    animation: slideDown 0.3s ease-out;
}