body {
        margin: 0;
        font-family: 'Poppins', sans-serif;
        display: flex;
        flex-wrap: wrap;
        min-height: 100vh;
        background-color: #f1f3f5;
    }

    .left-section,
    .right-section {
        width: 50%;
        padding: 40px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

    .left-section {
        background-color: #f8f9fa;
    }

    .login-container {
        background: white;
        padding: 30px;
        border-radius: 20px;
        box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
        width: 100%;
        max-width: 400px;
    }

    .login-container input {
        background-color: #ffffff;
    }

    .btn-login {
        background-color: #007bff;
        border: none;
    }

    .btn-login:hover {
        background-color: #0056b3;
    }

    .right-section {
        background-image: url('../img/login_prueba.jpg');
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        position: relative;
    }

    .right-section::before {
        content: "";
        position: absolute;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(2px);
        z-index: 1;
    }

    .right-section .content {
        z-index: 2;
        text-align: left;
        width: 100%;
        padding: 20px;
        color: white;
    }

    .carousel-item {
        background: rgba(0, 0, 0, 0.6);
        border-radius: 20px;
        padding: 30px;
        color: white;
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    }

    .carousel-item h5 {
        font-size: 1.5rem;
        font-weight: 600;
    }

    .carousel-item p {
        font-size: 1rem;
        line-height: 1.5;
    }

    .carousel-inner .bi {
        font-size: 2rem;
        color: #00bfff;
        margin-bottom: 15px;
    }

    .img-gallery {
        display: flex;
        justify-content: center;
        gap: 20px;
        margin-top: 20px;
        flex-wrap: wrap;
    }

    .img-gallery img {
        height: 130px;
        border-radius: 10px;
        object-fit: cover;
        box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
    }

    .btn-nav {
        width: 40px;
        height: 40px;
        background: white;
        border-radius: 50%;
        border: none;
        display: flex;
        justify-content: center;
        align-items: center;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        z-index: 3;
        transition: all 0.3s ease;
    }

    .btn-nav:hover {
        background: #007bff;
        color: white;
    }

    .btn-nav.prev {
        left: 20px;
    }

    .btn-nav.next {
        right: 20px;
    }

    .custom-indicators {
        z-index: 2;
        position: relative;
        display: flex;
        justify-content: center;
        gap: 10px;
        margin-top: 20px;
    }

    .custom-indicators .bar {
        width: 50px;
        height: 4px;
        background-color: #ffffff50;
        border-radius: 10px;
        transition: all 0.3s ease;
    }

    .custom-indicators .bar.active {
        background-color: #00bfff;
        width: 60px;
    }

    @media (max-width: 768px) {

        .left-section,
        .right-section {
            width: 100%;
            padding: 20px;
        }

        .right-section {
            min-height: 300px;
        }

        .login-container {
            box-shadow: none;
        }

        .img-gallery {
            flex-direction: column;
            align-items: center;
        }

        .carousel-item {
            text-align: center;
        }
    }

    .alert {
        animation: fadeInDown 0.5s ease-in-out;
    }

    @keyframes fadeInDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }

        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* Asegura que el aviso esté por encima y reciba clics */
    .first-time-hint {
        position: relative;
        z-index: 10;
        /* evita solapes raros */
    }

    /* Mejora la zona clickeable del botón */
    .first-time-hint .btn-close {
        cursor: pointer;
        width: 0.9rem;
        /* un pelín más grande */
        height: 0.9rem;
        opacity: .85;
        pointer-events: auto;
        /* por si algún estilo global lo anuló */
    }

    .first-time-hint .btn-close:hover {
        opacity: 111;
    }