<style>
    /* Variables CSS personalizadas */
    :root {
        --glass-bg-dark: rgba(255, 255, 255, 0.1); /* Fondo del "vidrio" oscuro */
        --glass-border-dark: rgba(255, 255, 255, 0.2); /* Borde del "vidrio" oscuro */
        --text-color-dark: #f8f9fa; /* Texto claro para modo oscuro */
        --input-bg-dark: rgba(255, 255, 255, 0.05); /* Fondo input oscuro */
        --input-border-dark: rgba(255, 255, 255, 0.3); /* Borde input oscuro */
        --input-placeholder-dark: rgba(255, 255, 255, 0.6); /* Placeholder input oscuro */
        --link-color-dark: #b3d9ff; /* Color de enlaces en oscuro */

        --glass-bg-light: rgba(255, 255, 255, 0.7); /* Fondo del "vidrio" claro */
        --glass-border-light: rgba(0, 0, 0, 0.1); /* Borde del "vidrio" claro */
        --text-color-light: #212529; /* Texto oscuro para modo claro */
        --input-bg-light: rgba(255, 255, 255, 0.9); /* Fondo input claro */
        --input-border-light: rgba(0, 0, 0, 0.2); /* Borde input claro */
        --input-placeholder-light: rgba(0, 0, 0, 0.5); /* Placeholder input claro */
        --link-color-light: #0056b3; /* Color de enlaces en claro */
    }

    /* Fondo del body (similar al de la imagen) */

    body {
        background-image: url('/static/imagenes/fondo.jpg');
        background-size: cover;
        background-position: center;
        display: flex;
        justify-content: center;
        align-items: center;
        min-height: 100vh;
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; /* Fuente más limpia */
        transition: all 0.3s ease;
    }

    body::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-image: url('/static/imagenes/fondo.jpg');
        background-size: cover;
        background-position: center;
        filter: grayscale(100%) brightness(0.2) contrast(0.5) blur(15px);
        opacity: 0.7; /* Cerca del 1 para que sea una silueta sólida, pero no completamente opaca */
        z-index: -1; /* Manda el fondo detrás del contenido */
        transition: all 0.3s ease;
    }

    /* Estilos para el contenedor principal de login (Glassmorphism) */
    .login-container {
        margin: auto; /* Centrado horizontal si es un elemento de bloque con ancho definido */
        backdrop-filter: blur(10px); /* Efecto de desenfoque */
        border-radius: 15px;
        padding: 40px;
        width: 100%;
        max-width: 400px;
        text-align: center;
        position: relative; /* Para posicionar el toggle */
        transition: background-color 0.3s, border-color 0.3s;
    }

    /* Colores para modo oscuro */
    [data-bs-theme="dark"] .login-container {
        background-color: var(--glass-bg-dark);
        border: 1px solid var(--glass-border-dark);
        color: var(--text-color-dark);
        box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37); /* Sombra para el efecto 3D */
    }
    [data-bs-theme="dark"] .form-control {
        background-color: var(--input-bg-dark);
        border: 1px solid var(--input-border-dark);
        color: var(--text-color-dark);
    }
    [data-bs-theme="dark"] .form-control::placeholder {
        color: var(--input-placeholder-dark);
    }
    [data-bs-theme="dark"] .form-control:focus {
        background-color: var(--input-bg-dark);
        border-color: #007bff; /* Azul de enfoque */
        box-shadow: 0 0 0 0.25rem rgba(0, 123, 255, 0.25);
        color: var(--text-color-dark);
    }
    [data-bs-theme="dark"] .form-check-label, [data-bs-theme="dark"] .login-link {
        color: var(--link-color-dark);
    }

    /* Colores para modo claro */
    [data-bs-theme="light"] .login-container {
        background-color: var(--glass-bg-light);
        border: 1px solid var(--glass-border-light);
        color: var(--text-color-light);
        box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
    }
    [data-bs-theme="light"] .form-control {
        background-color: var(--input-bg-light);
        border: 1px solid var(--input-border-light);
        color: var(--text-color-light);
    }
    [data-bs-theme="light"] .form-control::placeholder {
        color: var(--input-placeholder-light);
    }
    [data-bs-theme="light"] .form-control:focus {
        background-color: var(--input-bg-light);
        border-color: #007bff; /* Azul de enfoque */
        box-shadow: 0 0 0 0.25rem rgba(0, 123, 255, 0.25);
        color: var(--text-color-light);
    }
    [data-bs-theme="light"] .form-check-label, [data-bs-theme="light"] .login-link {
        color: var(--link-color-light);
    }

    /* Estilos del encabezado */
    .login-container h2 {
        font-size: 2.2rem;
        margin-bottom: 30px;
        color: inherit; /* Hereda el color del texto del tema */
    }

    /* Estilos para los inputs */
    .form-control {
        border-radius: 5px;
        padding: 12px 15px;
        margin-bottom: 20px;
        font-size: 1rem;
    }

    /* Toggle de tema */
    #theme-toggle {
        position: absolute;
        top: 20px;
        right: 20px;
        background: none;
        border: none;
        font-size: 1.3rem;
        color: var(--text-color-dark); /* Color por defecto */
        cursor: pointer;
        transition: color 0.3s ease;
    }
    [data-bs-theme="light"] #theme-toggle {
        color: var(--text-color-light);
    }
    #theme-toggle:hover {
        color: var(--color-primary); /* Efecto hover azul */
    }

    /* Estilos del encabezado */
    .header-content {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 30px;
        width: 100%;
    }
    .header-content h2 {
        font-size: 24px;
        margin: 0;
        color: inherit;
    }

    .header-content img {
        width: 102px;
        height: 102px;
        border-radius: 8px;
    }
</style>
