/* ===== CONTENEDOR PRINCIPAL ===== */
.login-container {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px;
    background-image: url('/NASE-UVA.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

    .login-container::before {
        content: "";
        position: absolute;
        inset: 0;
        background-color: rgba(0, 0, 0, 0.6);
        z-index: 1;
    }

/* ===== CAJA DEL FORMULARIO ===== */
.login-box {
    position: relative;
    z-index: 2;
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
    max-height: 90vh;
    overflow-y: auto;
    text-align: center;
}

    /* ===== TITULO ===== */
    .login-box h2 {
        margin-bottom: 20px;
        color: #333;
        font-size: 24px;
        font-weight: bold;
    }

/* ===== CAMPOS ===== */
.form-group {
    margin-bottom: 20px;
    text-align: left;
}

label {
    font-size: 14px;
    color: #333;
    font-weight: bold;
    display: block;
    margin-bottom: 8px;
}

/* NUEVAS CLASES PERSONALIZADAS */
.login-input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    background-color: #f9f9f9;
    color: #333;
    box-sizing: border-box;
    transition: border 0.3s ease;
}

    .login-input:focus {
        border-color: #0072ff;
        outline: none;
    }

/* ===== BOTON ===== */
.login-btn {
    width: 100%;
    padding: 12px;
    background-color: #0072ff;
    color: #fff;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

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

/* ===== ERRORES ===== */
.login-input.is-invalid {
    border-color: #dc3545;
    background-color: #f8d7da;
}

.validation-message {
    color: #dc3545;
    font-size: 12px;
    margin-top: 5px;
    text-align: center;
}

/* ===== IMAGEN ===== */
.login-image {
    text-align: center;
    margin-bottom: 20px;
}

.login-img {
    width: 50%;
    max-width: 160px;
    height: auto;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .login-box {
        max-width: 380px;
        padding: 30px;
    }
}

@media (max-width: 480px) {
    .login-box {
        max-width: 320px;
        padding: 25px;
    }

        .login-box h2 {
            font-size: 20px;
        }

    .login-img {
        width: 60%;
    }

    .login-input {
        font-size: 15px;
    }

    .login-btn {
        padding: 11px;
        font-size: 15px;
    }
}

/* Reduce aún más en móviles pequeños */
@media (max-width: 360px) {
    .login-box {
        padding: 18px;
        max-width: 300px;
    }

        .login-box h2 {
            font-size: 18px;
        }

    .login-btn {
        font-size: 14px;
        padding: 10px;
    }

    .login-input {
        font-size: 14px;
    }
}