body {
    font-family: 'Poppins', sans-serif;
    /* Gradiente que simula montañas y río */
    background: linear-gradient(
        to bottom,
        #8ec5fc 0%,
        #a1c4fd 40%,
        #4a6c8f 50%,
        #3f5f78 60%,
        #596164 70%,
        #6a7075 100%
    );
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    position: relative;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background-color: rgba(0, 0, 0, 0.1);
    z-index: 0;
}

.login-container {
    max-width: 450px;
    width: 100%;
    padding: 20px;
    position: relative;
    z-index: 1;
}

.logo-container {
    text-align: center;
    margin-bottom: 30px;
}

.logo-container img {
    max-width: 200px;
    height: auto;
    filter: drop-shadow(0px 0px 10px rgba(255, 255, 255, 0.5));
}

.login-card {
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #333;
}

.form-control {
    border-radius: 8px;
    padding: 12px;
    border: 1px solid #ced4da;
}

.form-control:focus {
    border-color: #0d6efd;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.btn-primary {
    border-radius: 8px;
    padding: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s;
}

.btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0a58ca;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(13, 110, 253, 0.4);
}

.form-label {
    font-weight: 500;
    color: #495057;
}

.form-check-label {
    color: #6c757d;
}