/* Variables CSS */
:root {
    --color-primario: #E50914;
    --color-primario-oscuro: #B20710;
    --color-primario-claro: #FF1A1A;
    --color-fondo: #0A0A0A;
    --color-fondo-claro: #111111;
    --color-tarjeta: #1A1A1A;
    --color-tarjeta-claro: #222222;
    --color-borde: #2A2A2A;
    --color-borde-claro: #3A3A3A;
    --color-texto: #FFFFFF;
    --color-texto-claro: #F0F0F0;
    --color-texto-medio: #AAAAAA;
    --color-texto-oscuro: #666666;
    --color-exito: #00C853;
    --color-error: #E50914;
    --color-info: #2196F3;
    --color-advertencia: #FF9800;
    --sombra-suave: 0 4px 20px rgba(0, 0, 0, 0.15);
    --sombra-media: 0 10px 30px rgba(0, 0, 0, 0.25);
    --sombra-fuerte: 0 20px 50px rgba(0, 0, 0, 0.35);
    --radio-borde: 16px;
    --radio-borde-pequeno: 12px;
    --transicion-rapida: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transicion-media: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transicion-lenta: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset y Estilos Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Manrope', 'Inter', sans-serif;
    background: linear-gradient(135deg, #0A0A0A 0%, #050505 100%);
    color: var(--color-texto);
    line-height: 1.6;
    min-height: 100vh;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Contenedor Principal */
.contenedor-login {
    display: flex;
    min-height: 100vh;
}

/* Panel Izquierdo */
.panel-izquierdo {
    flex: 1;
    background: linear-gradient(135deg, #0F0F0F 0%, #1A1A1A 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px;
    position: relative;
    overflow: hidden;
}

.panel-izquierdo::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(229, 9, 20, 0.1) 0%, transparent 50%);
}

.contenido-panel {
    max-width: 600px;
    width: 100%;
    z-index: 1;
}

.logo-contenedor {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto 40px;
}

.logo-sistema {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 0 30px rgba(229, 9, 20, 0.4));
    position: relative;
    z-index: 2;
}

.efecto-luminoso {
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    background: radial-gradient(circle at center, rgba(229, 9, 20, 0.2) 0%, transparent 70%);
    border-radius: 50%;
    animation: resplandor 3s ease-in-out infinite alternate;
}

@keyframes resplandor {
    from { opacity: 0.5; }
    to { opacity: 0.8; }
}

.info-sistema .titulo-sistema {
    font-size: 48px;
    font-weight: 800;
    background: linear-gradient(135deg, #FFFFFF 0%, #E50914 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-align: center;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.subtitulo-sistema {
    font-size: 18px;
    color: var(--color-texto-medio);
    text-align: center;
    margin-bottom: 40px;
    font-weight: 400;
}

.linea-separadora {
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-primario), transparent);
    margin: 30px 0;
}

.caracteristicas {
    margin: 40px 0;
}

.caracteristica {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radio-borde);
    margin-bottom: 15px;
    border: 1px solid transparent;
    transition: var(--transicion-media);
}

.caracteristica:hover {
    border-color: rgba(229, 9, 20, 0.2);
    background: rgba(255, 255, 255, 0.05);
    transform: translateX(10px);
}

.caracteristica i {
    font-size: 24px;
    color: var(--color-primario);
    width: 50px;
    height: 50px;
    background: rgba(229, 9, 20, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.caracteristica h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-texto-claro);
    margin-bottom: 5px;
}

.caracteristica p {
    font-size: 14px;
    color: var(--color-texto-medio);
}

.estado-sistema {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radio-borde);
    border: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: 40px;
}

.indicador-estado {
    display: flex;
    align-items: center;
    gap: 12px;
}

.punto-estado {
    width: 10px;
    height: 10px;
    background: var(--color-exito);
    border-radius: 50%;
    position: relative;
    animation: latido 2s infinite;
}

@keyframes latido {
    0% { box-shadow: 0 0 0 0 rgba(0, 200, 83, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(0, 200, 83, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 200, 83, 0); }
}

.indicador-estado span {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-texto-medio);
}

.version {
    font-size: 14px;
    color: var(--color-primario);
    font-weight: 700;
    background: rgba(229, 9, 20, 0.1);
    padding: 6px 15px;
    border-radius: 20px;
}

/* Panel Derecho */
.panel-derecho {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    background: linear-gradient(135deg, #080808 0%, #0D0D0D 100%);
    position: relative;
}

.panel-derecho::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="none"/><path d="M0,0 L100,0 L100,100" stroke="rgba(229,9,20,0.03)" stroke-width="1"/></svg>');
}

.contenedor-formulario {
    max-width: 500px;
    width: 100%;
    background: rgba(20, 20, 20, 0.8);
    backdrop-filter: blur(20px);
    border-radius: var(--radio-borde);
    padding: 50px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--sombra-fuerte);
    position: relative;
    z-index: 1;
}

.contenedor-formulario::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primario), var(--color-primario-oscuro));
    border-radius: var(--radio-borde) var(--radio-borde) 0 0;
}

/* Encabezado del Formulario */
.encabezado-formulario {
    text-align: center;
    margin-bottom: 40px;
}

.icono-seguridad {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--color-primario), var(--color-primario-oscuro));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 30px;
    color: white;
    box-shadow: 0 10px 30px rgba(229, 9, 20, 0.3);
}

.titulo-formulario {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-texto-claro);
    margin-bottom: 10px;
}

.subtitulo-formulario {
    font-size: 16px;
    color: var(--color-texto-medio);
    font-weight: 400;
}

/* Formulario */
.formulario-login {
    margin-bottom: 30px;
}

.grupo-entrada {
    margin-bottom: 25px;
}

.etiqueta-entrada {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-texto-medio);
    margin-bottom: 10px;
}

.etiqueta-entrada i {
    font-size: 16px;
    color: var(--color-primario);
}

.contenedor-input {
    position: relative;
}

.entrada-texto {
    width: 100%;
    padding: 18px 20px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--color-borde);
    border-radius: var(--radio-borde-pequeno);
    color: var(--color-texto-claro);
    font-size: 16px;
    font-family: 'Manrope', sans-serif;
    transition: var(--transicion-rapida);
}

.entrada-texto:focus {
    outline: none;
    border-color: var(--color-primario);
    background: rgba(0, 0, 0, 0.6);
}

.entrada-texto::placeholder {
    color: var(--color-texto-oscuro);
}

.indicador-entrada {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primario), transparent);
    transform: scaleX(0);
    transition: transform 0.3s ease;
    transform-origin: left;
}

.entrada-texto:focus + .indicador-entrada {
    transform: scaleX(1);
}

.boton-ver-contrasena {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--color-texto-medio);
    cursor: pointer;
    font-size: 18px;
    padding: 5px;
    transition: var(--transicion-rapida);
}

.boton-ver-contrasena:hover {
    color: var(--color-texto-claro);
}

/* Opciones de Login */
.opciones-login {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 25px 0 30px;
}

.recordarme {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--color-texto-medio);
    cursor: pointer;
}

.checkbox-recordar {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid var(--color-borde-claro);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transicion-rapida);
}

.checkbox-recordar:checked + .checkmark {
    background: var(--color-primario);
    border-color: var(--color-primario);
}

.checkbox-recordar:checked + .checkmark::after {
    content: '✓';
    color: white;
    font-size: 12px;
    font-weight: bold;
}

.enlace-olvido {
    font-size: 14px;
    color: var(--color-primario);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transicion-rapida);
}

.enlace-olvido:hover {
    color: var(--color-primario-claro);
    text-decoration: underline;
}

/* Botón de Login */
.boton-login {
    width: 100%;
    padding: 20px;
    background: linear-gradient(135deg, var(--color-primario), var(--color-primario-oscuro));
    border: none;
    border-radius: var(--radio-borde-pequeno);
    color: white;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transicion-media);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    box-shadow: 0 8px 25px rgba(229, 9, 20, 0.3);
}

.boton-login:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--color-primario-oscuro), #8B0000);
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(229, 9, 20, 0.4);
}

.boton-login:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.boton-login i {
    font-size: 18px;
    transition: transform 0.3s ease;
}

.boton-login:hover i {
    transform: translateX(5px);
}

/* Separador */
.separador {
    display: flex;
    align-items: center;
    margin: 30px 0;
    color: var(--color-texto-oscuro);
    font-size: 14px;
}

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

.separador span {
    padding: 0 15px;
}

/* Opciones Alternativas */
.opciones-alternativas {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 20px;
}

.boton-alternativo {
    padding: 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-borde);
    border-radius: var(--radio-borde-pequeno);
    color: var(--color-texto-medio);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transicion-media);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.boton-alternativo:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-borde-claro);
    color: var(--color-texto-claro);
}

.boton-alternativo i {
    font-size: 16px;
}

/* Pie del Formulario */
.pie-formulario {
    margin-top: 40px;
    padding-top: 25px;
    border-top: 1px solid var(--color-borde);
}

.info-seguridad {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 12px;
    color: var(--color-texto-oscuro);
    margin-bottom: 20px;
}

.info-seguridad i {
    color: var(--color-exito);
    font-size: 14px;
}

.enlaces-pie {
    display: flex;
    justify-content: center;
    gap: 30px;
}

.enlace-pie {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--color-texto-medio);
    text-decoration: none;
    transition: var(--transicion-rapida);
}

.enlace-pie:hover {
    color: var(--color-texto-claro);
}

.enlace-pie i {
    font-size: 14px;
}

/* Notificación de Carga */
.notificacion-carga {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.contenido-notificacion {
    background: rgba(30, 30, 30, 0.95);
    padding: 40px 50px;
    border-radius: var(--radio-borde);
    border: 1px solid var(--color-borde);
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: var(--sombra-fuerte);
}

.contenido-notificacion i {
    font-size: 32px;
    color: var(--color-primario);
}

.contenido-notificacion.exito i {
    color: var(--color-exito);
}

.contenido-notificacion span {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-texto-claro);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .contenedor-login {
        flex-direction: column;
    }
    
    .panel-izquierdo,
    .panel-derecho {
        padding: 40px;
    }
    
    .contenedor-formulario {
        max-width: 600px;
    }
}

@media (max-width: 768px) {
    .panel-izquierdo,
    .panel-derecho {
        padding: 30px;
    }
    
    .contenedor-formulario {
        padding: 40px 30px;
    }
    
    .info-sistema .titulo-sistema {
        font-size: 36px;
    }
    
    .opciones-alternativas {
        grid-template-columns: 1fr;
    }
    
    .enlaces-pie {
        flex-direction: column;
        gap: 15px;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .panel-izquierdo,
    .panel-derecho {
        padding: 20px;
    }
    
    .contenedor-formulario {
        padding: 30px 20px;
    }
    
    .info-sistema .titulo-sistema {
        font-size: 28px;
    }
    
    .caracteristica {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .estado-sistema {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .opciones-login {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
}